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The present invention relates to an acylsulfonamides compound and composition thereof.
FIELD OF THE INVENTION
The present invention is generally directed to antiviral compounds, and more specifically directed to compounds which inhibit the functioning of the NS3 protease encoded by Hepatitis C virus (HCV), compositions comprising such compounds and methods for inhibiting the functioning of the NS3 protease.
BACKGROUND OF THE INVENTION
HCV is a major human pathogen, infecting an estimated 170 million persons worldwide - roughly five times the number infected by human immunodeficiency virus type 1. A substantial fraction of these HCV infected individuals develop serious progressive liver disease, including cirrhosis and hepatocellular carcinoma. (Lauer, G. M.; Walker, B. D. N. Engl. J. Med. (2001), 345, 41-52).
Presently, the most effective HCV therapy employs a combination of alpha-interferon and ribavirin, leading to sustained efficacy in 40% of patients. (Poynard, T. et al. Lancet (1998), 352, 1426-1432). Recent clinical results demonstrate that pegylated alpha-interferon is superior to unmodified alpha-interferon as monotherapy (Zeuzem, S. et al. TV. Engl. J. Med. (2000), 343, 1666-1672). However, even with experimental therapeutic regimens involving combinations of pegylated alpha-interferon and ribavirin, a substantial fraction of patients do not have a sustained reduction in viral load. Thus, there is a clear and long-felt need to develop effective therapeutics for treatment of HCV infection.
HCV is a positive-stranded RNA virus. Based on a comparison of the deduced amino acid sequence and the extensive similarity in the 5' untranslated region, HCV has been classified as a separate genus in the Flaviviridae family. All members of the Flaviviridae family have enveloped virions that contain a positive
stranded RNA genome encoding all known virus-specific proteins via translation of a single, uninterrupted, open reading frame.
Considerable heterogeneity is found within the nucleotide and encoded amino acid sequence throughout the HCV genome. At least six major genotypes have been characterized, and more than 50 subtypes have been described. The major genotypes of HCV differ in their distribution worldwide, and the clinical significance of the genetic heterogeneity of HCV remains elusive despite numerous studies of the possible effect of genotypes on pathogenesis and therapy.
The single strand HCV RNA genome is approximately 9500 nucleotides in length and has a single open reading frame (ORF) encoding a single large polyprotein of about 3000 amino acids. In infected cells, this polyprotein is cleaved at multiple sites by cellular and viral proteases to produce the structural and non- structural (NS) proteins. In the case of HCV, the generation of mature non-structural proteins (NS2, NS3, NS4A, NS4B, NS5A, and NS5B) is effected by two viral proteases. The first one, as yet poorly characterized, cleaves at the NS2-NS3 junction; the second one is a serine protease contained within the N-terminal region of NS3 (henceforth referred to as NS3 protease) and mediates all the subsequent cleavages downstream of NS3, both in cis, at the NS3-NS4A cleavage site, and in trans, for the remaining NS4A- NS4B, NS4B-NS5A, NS5A-NS5B sites. The NS4A protein appears to serve multiple functions, acting as a cofactor for the NS3 protease and possibly assisting in the membrane localization of NS3 and other viral replicase components. The complex formation of the NS3 protein with NS4A seems necessary to the processing events, enhancing the proteolytic efficiency at all of the sites. The NS3 protein also exhibits nucleoside triphosphatase and RNA helicase activities. NS5B is a RNA-dependent RNA polymerase that is involved in the replication of HCV.
Among the compounds that have demonstrated efficacy in inhibiting HCV replication, as selective HCV serine protease inhibitors, are the peptide compounds disclosed in U.S. Patent No. 6,323,180.
SUMMARY OF THE INVENTION
The present invention provides a compound of formula I, including pharmaceutically acceptable salts, solvates or prodrugs thereof,
(Figure Remove) wherein:
(a) R| is Cj.g alkyl, €3.7 cycloalkyl, or €4.10 alkylcycloalkyl;
(b) m is 1 or 2;
(c) n is 1 or 2;
(d) R2 is H Ci-6 alkyl, €2-6 alkenyl or €3.7 cycloalkyl, each optionally
substituted with halogen;
(e) RS is C|.g alkyl optionally substituted with halo, cyano, amino, Cj.6
dialkylamino, Ce-io aryl, €7.14 alkylaryl, Ci_6 alkoxy, carboxy,
hydroxy, aryloxy, C7.|4alkylaryloxy, C2.6 alkylester, Cg-is
alkylarylester; C3.i2 alkenyl, C3.7 cycloalkyl, orC4.io alkylcycloalkyl,
wherein the cycloalkyl or alkylcycloalkyl are optionally substituted
with hydroxy, Q-e alkyl, C2-6 alkenyl or Cue alkoxy; or RS together
with the carbon atom to which it is attached forms a €3.7 cycloalkyl
group optionally substituted with €2-6 alkenyl;
(f) Y is H, phenyl substituted with nitro, pyridyl substituted with nitro, or
Ci-6 alkyl optionally substituted with cyano, OH or C3.7 cycloalkyl;
provided that if R4 or R5 is H then Yis H;
(g) B is H, C,.6 alkyl, R4-(C=O)-, ^0(0=0)-, R4-N(R5)-C(=O)-,
R4-N(R5)-C(=S)-, R4SO2-, or R4-N(R5)-SO2-;
(h) R4 is (i) CMO alkyl optionally substituted with phenyl, carboxyl, C\.$ alkanoyl, 1-3 halogen, hydroxy, -OC(O)C].6alkyl, C\.Q alkoxy, amino optionally substituted with Ci^ alkyl, arnido, or (lower alkyl) amido; (ii) C3.7cycloalkyl, Cs-v cycloalkoxy, or C4.ioalkylcycloalklyl, each optionally substituted with hydroxy, carboxyl, (C\.& alkoxy)carbonyl, amino optionally substituted with C\.& alkyl, amido, or (lower alkyl) amido; (iii) Ce-jo aryl or C/.ie arylalkyl, each optionally substituted with Ci.6 alkyl, halogen, nitro, hydroxy, amido, (lower alkyl) amido, or amino optionally substituted with C|_6 alkyl; (iv) Het; (v) bicyclo(l.l.l)pentane; or (vi) -C(O)OC]_6 alkyl, C2-ealkenyl or Ca-e alkynyl; (i) RS is H; Ci-e alkyl optionally substituted with 1-3 halogens; or d-6
alkoxy provided R4 is CMO alkyl; (j) X is O, S, SO, SO2, OCH2, CH2O or NH; (k) R' is Het; or C6-io aryl or C-j.\4, alkylaryl, optionally substituted with Ra;
and
(1) Rais C14 alkyl, C3.7cycloalkyl, d-e alkoxy, C3.7cycloalkoxy, halo-Cj-6 alkyl, CF.3, mono-or di- halo-Ci-e alkoxy, cyano, halo, thioalkyl, hydroxy, alkanoyl, NC>2, SH,, amino, Ci.6 alkylamino, di (d-e) alkylamino, di (Cj-e) alkylamide, carboxyl, (Ci-6) carboxyester, alkylsulfone, Ci-ealkylsulfonamide, di (Ci-6) alkyl(alkoxy)amine, 10 aryl, Cy.u alkylaryl, or a 5-7 membered monocyclic heterocycle;
with the proviso that X- R' is not
(Figure Remove)
or a pharmaceutically acceptable salt, solvate or prodrug thereof.
The present invention also provides compositions comprising the compounds or pharmaceutically acceptable salts, solvates or prodrugs thereof and a pharmaceutically acceptable carrier. In particular, the present invention provides pharmaceutical compositions useful for inhibiting HCV NS3 comprising a therapeutically effective amount of a compound of the present invention, or a pharmaceutically acceptable salt, solvate or prodrug thereof, and a pharmaceutically acceptable carrier.
The present invention further provides methods for treating patients infected with HCV, comprising administering to the patient a therapeutically effective amount of a compound of the present invention, or a pharmaceutically acceptable salt, solvate or prodrug thereof. Additionally, the present invention provides methods of inhibiting HCV NS3 protease by administering to a patient an effective amount of a compound of the present invention.
By virute of the present invention, it is now possible to provide improved drugs comprising the compounds of the invention which can be effective in the treatment of patients infected with HCV. Specifically, the present invention provides peptide compounds that can inhibit the functioning of the NS3 protease, e.g., in combination with the NS4A protease.
DETAILED DESCRIPTION OF THE INVENTION
Stereochemical definitions and conventions used herein generally follow McGraw-Hill Dictionary of Chemical Terms, S. P. Parker, Ed., McGraw-Hill Book Company, New York (1984) and Stereochemistry of Organic Compounds, Eliel, E. and Wilen, S., John Wiley & Sons, Inc., New York (1994). Many organic compounds exist in optically active forms, i.e., they have the ability to rotate the plane of plane-polarized light. In describing an optically active compound, the prefixes D and L or R and S are used to denote the absolute configuration of the molecule about its chiral center(s). The prefixes d and 1 or (+) and (-) are employed to designate the sign of rotation of plane-polarized light by the compound, with (-) or
1 meaning that the compound is levorotatory and (+) or d, meaning the compound, is dextrorotatory. For a given chemical structure, these compounds, called stereoisomers, are identical except that they are mirror images of one another. A specific stereoisomer of a mirror image pair may also be referred to as an enantiomer, and a mixture of such isomers is often called an enantiomeric mixture.
The nomenclature used to describe organic radicals, e.g., hydrocarbons and substituted hydrocarbons, generally follows standard nomenclature known in the art, unless otherwise specifically defined. Combinations of groups, e.g., alkylalkoxyamine, include all possible stable configurations, unless otherwise specifically stated. Certain radicals and combinations are defined below for purposes of illustration.
The terms "racemic mixture" and "racemate" refer to an equimolar mixture of two enantiomeric species, devoid of optical activity.
The term "chiral" refers to molecules which have the property of non-superimposability of the mirror image partner, while the term "achiral" refers to molecules which are superimposable on their mirror image partner.
The term "stereoisomers" refers to compounds which have identical chemical composition, but differ with regard to the arrangement of the atoms or groups in space.
The term "diastereomer" refers to a stereoisomer which is not an enantiomer, e.g., a stereoisomer with two or more centers of chirality and whose molecules are not mirror images of one another. Diastereomers have different physical properties, e.g. melting points, boiling points, spectral properties, and reactivities. Mixtures of diastereomers may separate under high resolution analytical procedures such as electrophoresis and chromatography.
The term "enantiomers" refers to two stereoisomers of a compound which are non-superimposable mirror images of one another.
The term "pharmaceutical]y acceptable salt" is intended to include nontoxic salts synthesized from a compound which contains a basic or acidic moiety by conventional chemical methods. Generally, such salts can be prepared by reacting the free acid or base forms of these compounds with a stoichiometric amount of the appropriate base or acid in water or in an organic solvent, or in a mixture of the two; generally, nonaqueous media like ether, ethyl acetate, ethanol, isopropanol, or acetonitrile are preferred. Lists of suitable salts are found in Remington's Pharmaceutical Sciences, 18th ed., Mack Publishing Company, Easton, PA, 1990, p. 1445. The compounds of the present invention are useful in the form of the free base or acid or in the form of a pharmaceutically acceptable salt thereof. All forms are within the scope of the invention.
The term "therapeutically effective amount" means the total amount of each active component that is sufficient to show a meaningful patient benefit, e.g., a sustained reduction in viral load. When applied to an individual active ingredient, administered alone, the term refers to that ingredient alone. When applied to a combination, the term refers to combined amounts of the active ingredients that result in the therapeutic effect, whether administered in combination, serially or simultaneously.
The term "compounds of the invention", and equivalent expressions, are meant to embrace compounds of Formula I, and pharmaceutically acceptable salts, and solvates, e.g. hydrates. Similarly, reference to intermediates, is meant to embrace their salts, and solvates, where the context so permits. References to the compound of the invention also include the preferred compounds of Formula II and III.
The term "derivative" means a chemically modified compound wherein the modification is considered routine by the ordinary skilled chemist, such as an ester or
an amide of an acid, protecting groups, such as a benzyl group for an alcohol or thiol, and tert-butoxycarbonyl group for an amine.
The term "solvate" means a physical association of a compound of this invention with one or more solvent molecules, whether organic or inorganic. This physical association includes hydrogen bonding. In certain instances the solvate will be capable of isolation, for example when one or more solvent molecules are incorporated in the crystal lattice of the crystalline solid. "Solvate" encompasses both solution-phase and isolable solvates. Exemplary solvates include hydrates, ethanolates, methanolates, and the like.
The term "prodrug" as used herein means derivatives of the compounds of the invention which have chemically or metabolically cleavable groups and become, by solvolysis or under physiological conditions, the compounds of the invention which are pharmaceutically active in vivo. A prodrug of a compound may be formed in a conventional manner with a functional group of the compounds such as with an amino, hydroxy or carboxy group when present. The prodrug derivative form often offers advanfapfts of sojnhjlitv. tissue r.ornpatjhjjjtv, or delayed release in a mammalian organism (see, Bundgard, H., Design of Prodrugs, pp. 7-9, 21-24, Elsevier, Amsterdam 1985). Prodrugs include acid derivatives well known to practitioners of the art, such as, for example, esters prepared by reaction of the parent acidic compound with a suitable alcohol, or amides prepared by reaction of the parent acid compound with a suitable amine.
The term "patient" includes both human and other mammals.
The term "pharmaceutical composition" means a composition comprising a compound of the invention in combination with at least one additional pharmaceutical carrier, i.e., adjuvant, excipient or vehicle, such as diluents, preserving agents, fillers, flow regulating agents, disintegrating agents, wetting agents, emulsifying agents, suspending agents, sweetening agents, flavoring agents, perfuming agents, antibacterial agents, antifungal agents, lubricating agents and
dispensing agents, depending on the nature of the mode of administration and dosage forms. Ingredients listed in Remington's Pharmaceutical Sciences, 18thed., Mack Publishing Company, Easton, PA (1999) for example, may be used.
The phrase "pharmaceutically acceptable" is employed herein to refer to those compounds, materials, compositions, and/or dosage forms which are, within the scope of sound medical judgment, suitable for use in contact with the tissues of patients without excessive toxicity, irritation, allergic response, or other problem or complication commensurate with a reasonable risk/benefit ratio.
The term "treating" refers to: (i) preventing a disease, disorder or condition from occurring in a patient which may be predisposed to the disease, disorder and/or condition but has not yet been diagnosed as having it; (ii) inhibiting the disease, disorder or condition, i.e., arresting its development; and (iii) relieving the disease, disorder or condition, i.e., causing regression of the disease, disorder and/or condition. The term "substituted" as used herein includes substitution at from one to the maximum number of possible binding sites on the core, e.p., organic radical, to which the subsitutent is bonded, e.g., mono-, di-, tri- or tetra- substituted, unless otherwise specifically stated.
The term "halo" as used herein means a halogen substituent selected from bromo, chloro, fluoro or iodo. The term "haloalkyl" means an alkyl group that in substituted with one or more halo substituents.
The term "alkyl" as used herein means acyclic, straight or branched chain alkyl substituents and includes, for example, methyl, ethyl, propyl, butyl, tert-butyl, hexyl, l-methylethyl, l-methylpropyl, 2-methypropyl, 1,1-dimethylethyl. Thus, C\.6 alkyl refers to an alkyl group having from one to six carbon atoms. The term "lower alkyl" means an alkyl group having from one to six, preferably from one to four carbon atoms. The term "alkylester" means an alkyl group additionally containing on ester group. Generally, a stated carbon number range, e.g., €2-6 alkylester, includes all of the carbon atoms in the radical.
The term "alkenyl" as used herein means an alky] radical containing at least one double bond, e.g., ethenyl (vinyl) and alkyl.
The term "alkoxy" as used herein means an alkyl group with the indicated number of carbon atoms attached to an oxygen atom. Alkoxy includes, for example, methoxy, ethoxy, propoxy, 1-methylethoxy, butoxy and 1,1-dimethylethoxy. The latter radical is referred to in the art as tert-butoxy. The term "alkoxycarbonyl" means an alkoxy group additionally containing a carbonyl group.
The term "cycloalkyl" as used herein means a cycloalkyl substituent containing the indicated number of carbon atoms and includes, for example, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl and spiro cyclic groups such as spirocyclopropyl as spirocyclobutyl. The term "cycloalkoxy" as used herein means a cycloalkyl group linked to an oxygen atom, such as, for example, cyclobutyloxy or cyclopropyloxy. The term "alkylcycloalkyl" means a cycloalkyl group linked to an alkyl group. The stated carbon number range includes the total number of carbons in the radical, unless otherwise specfically stated. This a C4-in alkylcycloalkyl may contain from 1-7 carbon atoms in the alkyl group and from 3-9 carbon atoms in the ring, e.g., cyclopropylmethyl or cyclohexylethyl.
The term "aryl" as used herein means an aromatic moiety containing the indicated number of carbon atoms, such as, but not limited to phenyl, indanyl or naphthyl. For example, C^-io aryl refers to an aromatic moiety having from six to ten carbon atoms which may be in the form of a monocyclic or bicyclic structure. The term "haloaryl" as used herein refers to an aryl mono, di or tri substituted with one or more halogen atoms. The terms "alkylaryl", "arylalkyl" and "aralalkyl" mean an aryl group substituted with one or more alkyl groups. Thus, a €7-14 alkylaryl group many have from 1-8 carbon atoms in the alkyl group for a monocyclic aromatic and from 1-4 carbon atoms in the alkyl group for a fused aromatic. The aryl radicals include those substituted with typical substituents known to those skilled in the art, e.g., halogen, hydroxy, carboxy, carbonyl, nitro, sulfo, amino, cyano, dialkylamino
haloalkyl, CF3) haloalkoxy, thioalkyl, alkanoyl, SH, alkylamino, alkylamide, dialkylamide, carboxyester, alkylsulfone, alkylsulfonamide and alkyl(alkoxy)amine. Examples of alkylaryl groups include benzyl, butylphenyl and 1-naphthylmethyl. The terms "alkylaryloxy" and "alkylarylester" mean alkylaryl groups containing an oxygen atom and ester group, respectively.
The term "carboxyalkyl" as used herein means a carboxyl group (COOH) linked through an alkyl group as defined above and includes, for example, butyric acid.
The term "alkanoyl" as used herein means straight or branched l-oxoalkyl radicals containing the indicated number of carbon atoms and includes, for example, formyl, acetyl, 1-oxopropyl (propionyl), 2-methyl-l-oxopropyl, 1-oxohexyl and the like.
The term "amino aralkyl" as used herein means an amino group substituted with an aralkyl group, such as the following amino aralkyl
The term "alkylamide" as used herein means an amide mono-substituted with an alkyl, such as
(Figure Remove)
The term "carboxyalkyl" as used herein means a carboxyl group (COOH) linked through a alkyl group as defined above and includes, for example, butyric acid.
The term "heterocycle" , also referred to as "Het", as used herein means 7-12 membered bicyclic heterocycles and 5-7 membered monocyclic heterocycles.
Preferred bicyclic heterocycles are 7-12 membered fused bicyclic ring systems (both rings share an adjacent pair of atoms) containing from one to four heteroatoms selected from nitrogen, oxygen and sulfur, wherein both rings of the
i
heterocycle are fully unsaturated. The nitrogen and sulfur heteroatoms atoms may be optionally oxidized. The bicyclic heterocycle may contain the heteroatoms in one or both rings. The bicyclic heterocycle may also contain substituents on any of the ring carbon atoms, e.g., one to three substituents. Examples of suitable substituents include Ci^alkyl, C3.7 cycloalkyl, Ci^alkoxy, Cs^cycloalkoxy, halo-Q-e aJkyl, CF3, mono-or di- halo-Ci-ealkoxy, cyano, halo, thioalkyl, hydroxy, alkanoyl, NCh, SH, , amino, Ci^alkylamino, di (Ci-6) alkylamino, di (Ci-6) alkylamide, carboxyl, (Cj-e) carboxyester, Cj-ealkylsulfone, C].g alkylsulfonamide, Ci^alkylsulfoxide, di (Ci-e) alkyl(alkoxy)amine, Ce-ioaryl, Cv.ualkylaryl, and a 5-7 membered monocyclic heterocycle. When two substituents are attached to vicinal carbon atoms of the bicyclic heterocycle, they can join to form a ring, e.g., a five, six or seven membered ring system containing up to two he-tPfoatoms selecting from oxygen and nitrogen. The bicyclic heterocycle may be attached to its pendant group, e.g. X in Formula I, at any atom in the ring and preferably carbon.
Examples of bicyclic heterocycles include, but are not limited to, the following ring systems:(Figure Remove)Preferred monocyclic heterocycles are 5-7membered saturated, partially saturated or fully unsaturated ring system (this latter subset herein referred to as
unsaturated heteroaromatic) containing in the ring from one to four heteroatoms selected from nitrogen, oxygen and sulfur, wherein the sulfur and nitrogen heteroatoms may be optionally oxidized. The monocyclic heterocycle may also contain substituents on any of the ring atoms, e.g., one to three substituents. Examples of suitable substituents include Ci_6alkyl, C3_7cycloalkyl, d^alkoxy, €3.7 cycloalkoxy, halo-Cre alkyl, CF^, mono-or di- halo-Ci^alkoxy, cyano.halo, thioalkyl, hydroxy, alkanoyl, NO2, SH, , amino, d.6 alkylamino, di (Ci-6) alkylamino, di (Ci-6) alkylamide, carboxyl, (Ci-6) carboxyester, Ci.6 alkylsulfone, Ci-ealkylsulfoxide, C|.6alkylsulfonamide, di (C]-6) alkyl(alkoxy)amine, €5-10 aryl, Cv-Halkylaryl and 5-7 membered monocyclic heterocycle. The monocyclic heterocycle may be attached to its pendant group, e.g. X in Formula I, at any atom in the ring
Examples of monocyclic heterocycles include, but are not limited to, the following:
(Figure Remove)Those skilled in the art will recognize that the heterocycles used in the compounds of the present invention should be stable. Generally, stable compounds are those which can be synthesized, isolated and formulated using techniques known the those skilled in the art without degradation of the compound.
Where used in naming compounds of the present invention, the designations "PI', PI, P2, P3 and P4", as used herein, map the relative positions of the amino acid residues of a protease inhibitor binding relative to the binding of the natural peptide cleavage substrate. Cleavage occurs in the natural substrate between PI and PI'
where the nonprime positions designate amino acids starting from the C-terminus end of the peptide natural cleavage site extending towards the N-terminus; whereas, the prime positions emanate from the N-terminus end of the cleavage site designation and extend towards the C-terminus. For example, PI' refers to the first position away from the right hand end of the C-terminus of the cleavage site (ie. N-terminus first position); whereas PI starts the numbering from the left hand side of the C-terminus cleavage site, P2: second position from the C-terminus, etc.)(seeBerger A. & Schechter I., Transactions of the Royal Society London series (1970), B257. 249-264].
Thus in the compounds of formula I, the "PI' to P4" portions of the molecule are indicated below:
As used herein the term "1-aminocyclopropyl-carboxylic acid" (Acca) refers to a compound of formula:
(Figure Remove)As used herein the term "rert-butylglycine" refers to a compound of the
formula:
(Figure Remove)The term "residue" with reference to an amino acid or amino acid derivative means a radical derived from the corresponding a-amino acid by eliminating the hydroxyl of the carboxy group and one hydrogen of the a-amino acid group. For instance, the terms Gin, Ala, Gly, He, Arg, Asp, Phe, Ser, Leu, Cys, Asn, Sar and Tyr represent the "residues" of L-glutamine, L-alanine, glycine, L-isoleucine, L-arginine, L-aspartic acid, L-phenylalanine, £-serine, L-leucine, L-cysteine, L-asparagine, sarcosine and L-tyrosine, respectively.
The term "side chain" with reference to an amino acid or amino acid residue means a group attached to the oc-carbon atom of the a-amino acid. For example, the R-group side chain for glycine is hydrogen, for alanine it is methyl, for valine it is isopropyl. For the specific R-groups or side chains of the a-amino acids reference is made to A.L. Lehninger's text on Biochemistry (see chapter 4).
The compounds of the present invention have the structure of Formula I:
(Figure Remove)
wherein:
(a) Rj is Ci-8 alkyl, C3_7 cycloalkyl, or C4-io alkylcycloalkyl;
(b) m is 1 or 2;
(c) n is 1 or 2;
(d) R2 is H CM; alkyl, €2-6 alkenyl or C3.7 cycloalkyl, each optionally
substituted with halogen;
(e) R3 is Ci.g alkyl optionally substituted with halo, cyano, amino, CI-G
dialkylamino, Ce-io aryl, C?-u alkylaryl, d-e alkoxy, carboxy,
hydroxy, aryloxy, Cv.ualkylaryloxy, €2-6 alkylester, Cg-is
alkylarylester; €3.12 alkenyl, €3.7 cycloalkyl, or 04.10 alkylcycloalkyl,
wherein the cycloalkyl or alkylcycloalkyl are optionally substituted
with hydroxy, C|.6 alky], €2-6 alkenyl or C\.t alkoxy; or R3 together
with the carbon atom to which it is attached forms a C3.7 cycloalkyl
group optionally substituted with C2-6 alkenyl;
(f) Y is H, phenyl substituted with nitro, pyridyl substituted with nitro, or
Ci.6 alkyl optionally substituted with cyano, OH or C3.7 cycloalkyl;
provided that if R4 or RS is H then Yis H;
(g) B is H, Cs-c alkyl, R^OO)-, R4O(C=OH P-4-N(R5)-C(=O)-,
R4-N(R5)-C(=S)-, R4S02-, or R4-N(R5)-SO2s
(h) R4 is (i) CMO alkyl optionally substituted with phenyl, carboxyl, Q-6 alkanoyl, 1-3 halogen, hydroxy, -OC(O)Ci.6alkyl, C|.e alkoxy, amino optionally substituted with Q.6 alkyl, amido, or (lower alkyl) amido; (ii) €3.7 cycloalkyl, C3.7 cycloalkoxy, or €4.10 alkylcycloalklyl, each optionally substituted with hydroxy, carboxyl, (Ci.6alkoxy)carbonyl, amino optionally substituted with Chalky!, amido, or (loweralkyl) amido; (iii) Ce-io aryl or C?.^ arylalkyl, each optionally substituted with C|-ealkyl, halogen, nitro, hydroxy, amido, (lower alkyl) amido, or amino optionally substituted with Ci_6 alkyl; (iv) Het; (v) bicyclo(l.l.l)pentane; or (vi) -C(O)OCi-6alkyl, Ca-ealkenyl or C2-e alkynyl;
(i) R5 is H; Cw alkyl optionally substituted with 1-3 halogens; or Ci-e alkoxy provided R4 is CMO alkyl;
(j) X is O, S, SO, SO2, OCH2, CH2O or NH;
(k) R' is Het; or Ce-io aryl or CV-H alkylaryl, optionally substituted with Ra; and
(1) Rais Ci.6alkyl, C3.7cycloalkyl, C|.6 alkoxy, C3-7cycloalkoxy, halo-Ci-6 alkyl, CF3, mono-or di- halo-Ci-e alkoxy, cyano, halo, thioalkyl, hydroxy, alkanoyl, NO2, SH,, amino, Ci-ealkylamino, di (Ci-6) alkylarnino, di (Cre) alkylamide, carboxyl, (Cj-e) carboxyester, Ci-6 alkylsulfone, Ci.6alkylsulfonamide, di (Ci-6) alkyl(alkoxy)amine, Ce-10 aryl, CV.M alkylaryl, or a 5-7 membered monocyclic heterocycle;
with the proviso that X- R' is not
(Figure Remove)
or a pharmaceutically acceptable salt, solvate or prodrug thereof.
Preferably, R2 is C2-e alkenyl; R3 is Q-g alkyl optionally substituted with Ci-e alkoxy, or C3.7 cycloalkyl; Y is H; B is R4-(C=O>, R4O(C=O)-, or R4-N(R5)-C(=O)-; R4 is Ci-io alkyl optionally substituted with 1-3 halogen or C\.(, alkoxy; or €3.7 cycloalkyl or C^ioalkylcycloalklyl; RS is H; X is O or NH; and R' is Het.
The substituents from each grouping may be selected individually and combined in any combination which provides a stable compound in accordance with the present invention. Also, more than one substituent from each group may be substituted on the core group provided there are sufficient available binding sites. For example, each of the following Ra substituents, C\.(, alkoxy, Ce aryl and a 5-7 membered monocyclic heterocycle, may be substituted on a bicyclic heterocycle R'.
In a preferred aspect, the compounds of the present invention have the structure of Formula II:
(Figure Remove)wherein:
(a) RI is Cs.7 cycloalkyl;
(b) R2 is C14 alkyl, €2-6 alkenyl or €3.7 cycloalkyl;
(c) R3 is Ci-s alkyl optionally substituted with Ce aryl, Cj.6 alkoxy,
carboxy, hydroxy, aryloxy, Cy.ualkylaryloxy, C2-6 alkylester, Cg.is
alkylarylester; €3.12 alkenyl, €3.7 cycloalkyl, or C^o alkylcycloalkyl;
(d) YisH;
(e) B is H, C,.6 alkyl, R4-(C=O)-, R4O(C=O)-, R4-N(R5)-C(=O)-,
R,-NirRcVrr=SV P.,SO,-.orR.-NCRcVSO,-;
(f) R4 is (i) CMC alkyl optionally substituted with phenyl, carboxyi, C]_6
alkanoyl, 1-3 halogen, hydroxy, Cj.e alkoxy; (ii) €3.7 cycloalkyl, €3.7
cycloalkoxy, or C^ioalkylcycloalklyl; or (iii) Cg-io aryl or €7.16
arylalkyl; each optionally substituted with Ci-6 alkyl or halogen;
(g) R5 is H or C|.e alkyl optionally substituted with 1-3 halogens;
(h) XisOorNH;
(i) R' is Het; or C^io aryl optionally substituted with Ra; and
(j) Rais C|.6alkyl, C3.7 cycloalkyl, Ci-e alkoxy, halo-Ci-6 alkyl, halo,
amino, Cearyl, or a 5-7 membered monocyclic heterocycle; with the proviso that Xa- R' is not
or a pharmaceutically acceptable salt, solvate or prodrug thereof.
In one preferred aspect of the invention, R' is a bicyclic heterocycle. Preferably, the bicyclic heterocycle contains 1 or 2 nitrogen atoms and optionally a sulfur atom or an oxygen atom in the ring. Preferably, the heterocycle is substituted with at least one of C|.6 alkyl, Ci_6 alkoxy, halo, Ce aryl, and a 5-7 membered monocyclic heterocycle. More preferably, R' is a bicyclic heterocycle containing 1 nitrogen atom and substituted with methoxy and at least one of a Ce aryl and a 5-7 membered monocyclic heterocycle.
In another preferred aspect of the invention, R' is a monocyclic heterocycle. Preferably, the heterocycle contains 1 or 2 nitrogen atoms and optionally a sulfur atom or an oxygen atom in the ring. Preferably, the heterocycle is substituted with at least one of C14 alkyl, Ci-6 alkoxy, halo, C6-io aryl, C7.|4 alkylaryl, or a 5-7 membered monocyclic heterocycle. More preferably, R' is a monoyclic heterocycle containing 1 or 2 nitrogen atoms and substituted with methoxy and at least one of a Cg aryl and a 5-7 membered monocyclic heterocycle.
In a more preferred aspect of the invention, the compounds have the structure of Formula III
(Figure Remove)wherein: (a) (b) (c) (d) (e) (f)
RI is €3.7 cycloalkyl;
RZ is C2-6 alkenyl;
R3 is Ci-8 alkyl;
Y is H;
B is R40(C=0)-, or R4-N(R5)-C(=0)-;
R4 is CLIO aikyl;
(h) R' is a bicyclic heterocycle optionally substituted with Ra; and (i) Ra is Ci-6 alkyl, Ci.6 alkoxy, halo, Ce aryl, or a 5-7 membered monocyclic heterocycle; with the proviso that O- R' is not
or a pharmaceutically acceptable salt, solvate or prodrug thereof.
Preferably, RI is cyclopropyl or cyclobutyl, R2 is vinyl, R3 is t-butyl, R4 is t-butyl and R' is quinoline or isoquinoline optionally substituted with Ra. Preferably, Ra includes at least one of d.6 alkoxy, C6 aryl and a 5-7 membered monocyclic
heterocycle. In a preferred aspect of the invention, R] is cyclopropyl, R2 is vinyl, R3 is t-butyl, R4 is t-butyl, and R' is isoquinoline substituted with Ci.galkoxy and at least one of Ce aryl or a 5-7 membered monocyclic heterocycle.
The compounds of the present invention, by virtue of their basic moiety, can form salts by the addition of a pharmaceutically acceptable acid. The acid addition salts are formed from a compound of Formula I and a pharmaceutically acceptable inorganic acid, including but not limited to hydrochloric, hydrobromic, hydroiodic, sulfuric, phosphoric, or organic acid such as p-toluenesulfonic, methanesulfonic, acetic, benzoic, citric, malonic, fumaric, maleic, oxalic, succinic, sulfamic, or tartaric. Thus, examples of such pharmaceutically acceptable salts include chloride, bromide, iodide, sulfate, phosphate, methanesulfonate, citrate, acetate, malonate, fumarate, sulfamate, and tartrate.
Salts of an amine group may also comprise quaternary ammonium salts in which the amino nitrogen carries a suitable organic group such as an alkyl, alkenyl, alkynyl or aralkyl moiety.
Compounds of the present invention, which are substituted with an acidic group, may exist as salts formed through base addition. Such base addition salts include those derived from inorganic bases which include, for example, alkali metal salts (e.g. sodium and potassium), alkaline earth metal salts (e.g. calcium and magnesium), aluminum salts and ammonium salts. In addition, suitable base addition salts include salts of physiologically acceptable organic bases such as trimethylamine, triethylamine, morpholine, pyridine, pipendine, picoline, dicyclohexylamine, N,N'-dibenzylethylenediamine, 2-hydroxyethylamine, bis-(2-hydroxyethyl)amine, tri-(2-hydroxyethyl)amine, procaine, dibenzylpiperidine, N-benzyl-p-phenethylamine, dehydroabietylamine, N,N'-bishydroabietylamine, glucamine, N-methylglucamine, collidine, quinine, quinoline, ethylenediamine, ornithine, choline, N,N'-benzylphenethylamine, chloroprocaine, diethanolamine, diethylamine, piperazine, tris(hydroxymethyl)aminomethane and tetramethyl ammonium hydroxide and basic amino acids such as lysine, arginine and
N-methylglutamine. These salts may be prepared by methods known to those skilled in the art.
Certain compounds of the present invention, and their salts, may also exist in the form of solvates with water, for example hydrates, or with organic solvents such as methanol, ethanol or acetonitrile to form, respectively, a methanolate, ethanolate or acetonitrilate. The present invention includes each solvate and mixtures thereof.
In addition, compounds of the present invention, or a salt or solvate thereof, may exhibit polymorphism. The present invention also encompasses any such polymorphic form.
The compounds of the present invention also contain two or more chiral centers. For example, the compounds may include PI cyclopropyl element of formula
wherein C\ and €2 each represent an asymmetric carbon atom at positions 1 and 2 of the cyclopropyl ring. Not withstanding other possible asymmetric centers at other segments of the compounds, the presence of these two asymmetric centers means that the compounds can exist as racemic mixtures of diastereomers, such as the diastereomers wherein R2 is configured either syn to the amide or syn to the carbonyl as shown below.
The present invention includes both enantiomers and mixtures of enantiomers such as racemic mixtures.
The enantiomers may be resolved by methods known to those skilled in the art, for example, by formation of diastereoisomeric salts which may be separated by crystallization, gas-liquid or liquid chromatography, selective reaction of one enantiomer with an enantiomer-specific reagent. It will be appreciated that where the desired enantiomer is converted into another chemical entity by a separation technique, then an additional step is required to form the desired enantiomeric form. Alternatively, specific enantiomers may be synthesized by asymmetric synthesis using optically active reagents, substrates, catalysts or solvents, or by converting one enantiomer into the other by asymmetric transformation.
The compounds of the present invention may be in the form of a prodrug. Simple aliphatic or aromatic esters derived from, when present, acidic groups pendent on the compounds of this invention are preferred prodrugs. In some cases it
is desirable to prepare double ester type prodrugs such as (acyloxy) alkyl esters or (alkoxycarbonyl)oxy)alkyl esters.
Certain compounds of the present invention may also exist in different stable conformational forms which may be separable. Torsional asymmetry due to restricted rotation about an asymmetric single bond, for example because of steric hindrance or ring strain, may permit separation of different conformers. The present invention includes each conformational isomer of these compounds and mixtures thereof.
Certain compounds of the present invention may exist in zwitterionic form and the present invention includes each zwitterionic form of these compounds and mixtures thereof.
The starting materials useful to synthesize the compounds of the present invention are known to those skilled in the art and can be readily manufactured or are commercially available.
The compounds of the present invention can be manufactured by methods known to those skilled in the art, see e.p., US Patent No. 6,323,180 and US Patent Appl. 20020111313 Al. The following methods set forth below are provided for illustrative purposes and are not intended to limit the scope of the claimed invention. It will be recognized that it may be preferred or necessary to prepare such a compound in which a functional group is protected using a conventional protecting group then to remove the protecting group to provide a compound of the present invention. The details concerning the use of protecting groups in accordance with the present invention are known to those skilled in the art.
The compounds of the present invention may, for example, be synthesized according to a general process as illustrated in Scheme I (wherein CPG is a carboxyl protecting group and APG is an amino protecting group):
Briefly, the PI, P2, and P3 can be linked by well known peptide coupling techniques. The PI, P2, and P3 groups may be linked together in any order as long as the final compound corresponds to peptides of the invention. For example, P3 can be linked to P2-P1; or PI linked to P3-P2.
Generally, peptides are elongated by deprotecting the a-amino group of the N-terminal residue and coupling the unprotected carboxyl group of the next suitably N-protected amino acid through a peptide linkage using the methods described. This deprotection and coupling procedure is repeated until the desired sequence is obtained. This coupling can be performed with the constituent amino acids in stepwise fashion, as depicted in Scheme I.
Coupling between two amino acids, an amino acid and a peptide, or two peptide fragments can be carried out using standard coupling procedures such as the azide method, mixed carbonic-carboxylic acid anhydride (isobutyl chloroformate) method, carbodiimide (dicyclohexylcarbodiimide, diisopropylcarbodiimide, or water-soluble carbodiimide) method, active ester (p-nitrophenyl ester, N-hydroxysuccinic imido ester) method, Woodward reagent K-method,
carbonyldiimidazole method, phosphorus reagents or oxidation-reduction methods. Some of these methods (especially the carbodiimide method) can be enhanced by adding 1-hydroxybenzotriazole or 4-DMAP. These coupling reactions can be performed in either solution (liquid phase) or solid phase.
More explicitly, the coupling step involves the dehydrative coupling of a free carboxyl of one reactant with the free amino group of the other reactant in the present of a coupling agent to form a linking amide bond. Descriptions of such coupling agents are found in general textbooks on peptide chemistry, for example, M. Bodanszky, "Peptide Chemistry", 2nd rev ed., Springer-Verlag, Berlin, Germany, (1993). Examples of suitable coupling agents are N,N'-dicyclohexylcarbodiimide, 1-hydroxybenzotriazole in the presence of N,N'-dicyclohexylcarbodiimide or N-ethyl-N'-[(3-dimethylamino)propyl]carbodiimide. A practical and useful coupling agent is the commercially available
(benzotriazol-l-yloxy)tris-(dimethylamino)phpsphoniumhexafluorophosphate, either by itself or in the present of 1-hydroxybenzotriazole or 4-DMAP. Another practical and useful coupling agent is commercially available 2-(lH-benzotriazol-l-yl)-N, N
coupling agent is commercially available
O-(7-azabenzotrizol-1 -yl)-N,N,N' ,N'-tetramethyIuronium hexafluorophosphate. The coupling reaction is conducted in an inert solvent, e.g. dichloromethane, acetonitrile or dimethylformamide. An excess of a tertiary amine, e.g. diisopropylethylamine, N-methylmorpholine, N-methylpyrrolidine or 4-DMAP is added to maintain the reaction mixture at a pH of about 8. The reaction temperature usually ranges between 0 °C and 50 °C and the reaction time usually ranges between 15 min and 24 h.
The functional groups of the constituent amino acids generally must be protected during the coupling reactions to avoid formation of undesired bonds. Protecting groups that can be used are listed, for example, in Greene, "Protective Groups in Organic Chemistry", John Wiley & Sons, New York (1981) and "The
Peptides: Analysis, Synthesis, Biology", Vol. 3, Academic Press, New York (1981), the disclosures of which are hereby incorporated by reference.
The cc-amino group of each ammo acid to be coupled to the growing peptide chain must be protected (APG). Any protecting group known in the art can be used. Examples of such groups include: 1) acyl groups such as formyl, trifluoroacetyl, phthalyl, and p-toluenesulfonyl; 2) aromatic carbamate groups such as benzyloxycarbonyl (Cbz or Z) and substituted bensyloxycarbonyls, and 9-fluorenylmethyloxycarbonyl (Fmoc); 3) aliphatic carbamate groups such as tert-butyloxycarbonyl (Boc), ethoxycarbonyl, diisopropylmethoxycarbonyl, and allyloxycarbonyl; 4) cyclic alkyl carbamate groups such as cyclopentyloxycarbonyl and adamantyloxycarbonyl; 5) alkyl groups such as triphenylmethyl and benzyl; 6)trialkylsilyl such as trimethylsilyl; and 7) thiol containing groups such as phenylthiocarbonyl and dithiasuccinoyl.
The preferred a-amino protecting group is either Boc or Fmoc. Many amino acid derivatives suitably protected for peptide synthesis are commercially available. The a-amino protecting group of the newly added amino acid residue is cleaved prior to the coupling of the next amino acid. When the Boc group is used, the methods of choice are trifluoroacetic acid, neat or in dichloromethane, or HC1 in dioxane or in ethyl acetate. The resulting ammonium salt is then neutralized either prior to the coupling or in situ with basic solutions such as aqueous buffers, or tertiary amines in dichloromethane or acetonitrile or dimethylformamide. When the Fmoc group is used, the reagents of choice are piperidine or substituted piperidine in dimethylformamide, but any secondary amine can be used. The deprotection is carried out at a temperature between 0°C and room temperature (rt or RT) usually 20-22°C.
Any of the amino acids having side chain functionalities must be protected during the preparation of the peptide using any of the above-described groups. Those skilled in the art will appreciate that the selection and use of appropriate protecting groups for these side chain functionalities depend upon the amino acid and presence of other protecting groups in the peptide. The selection of such protecting groups is
important in that the group must not be removed during the deprotection and coupling of the a-amino group.
For example, when Boc is used as the a-amino protecting group, the following side chain protecting group are suitable: p-toluenesulfonyl (tosyl) moieties can be used to protect the amino side chain of ami no acids such as Lys and Arg; acetamidomethyl, benzyl (Bn), or re/t-butylsulfonyl moieties can be used to protect the sulfide containing side chain of cysteine; bencyl (Bn) ethers can be used to protect the hydroxy containing side chains of serine, threonine or hydroxyproline; and benzyl esters can be used to protect the carboxy containing side chains of aspartic acid and glutamic acid.
When Fmoc is chosen for the a-amine protection, usually tert-butyl based protecting groups are acceptable. For instance, Boc can be used for lysine and arginine, tert-butyl ether for serine, threonine and hydroxyproline, and ter/-butyl ester for aspartic acid and glutamic acid. Triphenylmethyl (Trityl) moiety can be used to protect the sulfide containing side chain of cysteine.
Once the elongation of the peptide is completed all of the protecting groups are removed. When a liquid phase synthesis is used, the protecting groups are removed in whatever manner is dictated by the choice of protecting groups. These procedures are well known to those skilled in the art.
Further, the following guidance may be followed in the preparation of compounds of the present invention. For example, to form a compound where R4-C(0)-, R4-S(O)2,, a protected P3 or the whole peptide or a peptide segment is coupled to an appropriate acyl chloride or sulfonyl chloride respectively, that is either commercially available or for which the synthesis is well known in the art. In preparing a compound where R4O-C(O)-, a protected P3 or the whole peptide or a peptide segment is coupled to an appropriate chloroformate that is either commercially available or for which the synthesis is well known in the art. For Boc-derivatives (Boc)2O is used.
Cyclopentanol is treated with phosgene to furnish the corresponding chloroformate.
The chloroformate is treated with the desired NHrtripeptide in the presence of a base such as triethylamine to afford the cyclopentylcarbamate.
In preparing a compound where R4-N(R5)-C(O)-, or R4-NH-C(S)-, a protected P3 or the whole peptide or a peptide segment is treated with phosgene followed by amine as described in SynLett. Feb 1995; (2); 142-144 or is reacted with the commercially available isocyanate and a suitable base such as triethylamine.
In preparing a compound where R4-N(Rs)-S(O2), a protected P3 or the whole peptide or a peptide segment is treated with either a freshly prepared or commercially available sulfamyl chloride followed by amine as described in patent Ger. Offen.(1998), 84 pp. DE 19802350 or WO 98/32748.
The cc-carboxyl group of the C-terminal residue is usually protected as an ester (CPG) that can be cleaved to give the carboxylic acid. Protecting groups that can be used include: 1) alkyl esters such as methyl, trimethylsilylethyl and t-butyl, 2) aralkyl esters such as benzyl and substituted benzyl, or 3) esters that can be cleaved by mild base treatment or mild reductive means such as trichloroethyl and phenacyl esters.
The resulting a-carboxylic acid (resulting from cleavage by mild acid, mild base treatment or mild reductive means) is coupled with a R|SC>2NH2 [prepared by treatment of R]SO2C1 in ammonia saturated tetrahydrofuran solution] in the presence of peptide coupling agent such as GDI or ED AC in the presence of a base such as 4-dimethylaminopyridine (4-DMAP) and/or l,8-diazabicyclo[5.4.0]undec-7-ene (DBU) to incorporate the PI' moiety, effectively assembling the tripeptide P1'-P1-P2-P3-APG. Typically, in this process, 1-5 equivalents of PI' coupling agents are used.
Furthermore, if the P3 protecting group APG is removed and replaced with a B moiety by the methods described above, and the resulting a-carboxylic acid resulting from cleavage (resulting from cleavage by mild acid, mild base treatment or mild reductive means) is coupled with a RiSC^NHa [prepared by treatment of RiSO?Cl in ammonia saturated tetrahydrofuran solution or alternative methods described herein] in the presence of peptide coupling agent such as GDI or ED AC in the presence of a base such as 4-dimethylaminopyridine (4-DMAP) and/or l,8-diazabicyclo[5.4.0]undec-7-ene (DBU) to incorporate the PI' moiety, the trmentidP1- P1'-P1-P?-P3-R is nrenared. Typically, in this process. 1-S equivalents of PI' coupling agents are used.
Compounds of the present invention can be prepared by many methods including those described in the examples, below, and as described in U.S. Patent No. 6,323,180 and U.S. Patent Application No. 10/001,850 filed on November 20,2001. The teachings of U.S. Patent No. 6,323,180 and U.S. Patent Application No. 10/001,850 are incorporated herein, in their entirety, by reference.
Scheme II further shows the general process wherein compounds of Formula I are constructed by the coupling of tripeptide carboxylic acid intermediate (1) with a Pr sulfonamide. (It should be noted that the groups Re, R?, Rg, RO.RIO. RI i as shown below represent substituents of the heterocyclic system.) Said coupling reaction requires treatment of carboxylic acid (1) with a coupling reagent such as carbonyl diimidazole in a solvent such as THF, which can be heated to reflux, followed by the
addition of the formed derivative of (1), to the Plx sulfonamide, in a solvent such as THF or methylene chloride in the presence of a base such as DBU. Scheme II
(Figure Remove)An alternative process for the construction of compounds of Formula I is shown in Scheme in. Therein the PF sulfonamide element is coupled to the PI element using the process employed in Scheme 1. The resulting P1-P1V moiety can then be deprotected at it's arnino terminus. In this general example a Boc protecting group is employed but one skilled in the art would recognize that a number of suitable amino protecting groups could be employed in this process. Said Boc protecting group can be removed using acid such as trifluoroacetic acid in a solvent such as dichloroethane to provide the deprotected amine as the TFA salt. Said TFA amine salt can be directly employed in the subsequent coupling reaction or as an alternative the TFA amine salt can be first converted to the HC1 amine salt, and this HC1 amine salt is used in said coupling reaction as shown in Scheme HI. The coupling of said HC1 amine salt (3) with the carboxyl terminus a P4-P3-P2 intermediate can be achieved using coupling reagents, such as HATU, in solvents such as dichloromethane to provide compounds of Formula I (4).
An alternative process for the construction of compounds of Formula I is shown in Scheme IV. Herein the hydrochloride salt of the Pl-Pr terminal amine (1) is coupled to the free carboxyl group of the P2 element using coupling agents such as PyBOP, in the presence of a base such as diisopropyl amine, and in a solvent such as methylene chloride. The resulting P2-P1-PT intermediate can be converted to compounds of Formula I in a two step process wherein the first step is deprotection
chloride. The resulting trifluoroacetic acid salt can be coupled with the carboxyl terminus of the P4-P3 element using standard coupling agents such as PyBop in the presence of base such as diisopropyl amine, and using solvents such methylene chloride to provide compounds of Formula I (4).
The P4-P3-P2 intermediate utilized in the above schemes can be constructed as previously described with a further description of this process shown in general Scheme V. Therein the free carboxyl terminus of the P4-P3 intermediate (1), can be coupled to the amino terminus of the P2 element to provide the P4-P3-P2 dipeptide (2). The carboxyl terminus of the P4-P3-P2 intermediate can be deprotected by saponification of the ester group to provide P4-P3-P2 as the free carboxylic acid (3). Intermediates like (3) can be converted to compounds of Formula I using the methods described herein. Scheme V
Compounds of Formula 1 can also be converted into other compounds of Formula I as described herein. An example of such a process is shown in Scheme VI wherein a compound of Formula I (1) which bears a Boc group at the P4 position is converted in a compound of Formula I (3) wherein said compound bears a urea group at the P4 position. The conversion of (1) to (3) can be carried out in a two step process the first of which is the conversion of (1) to amine (2) by treatment of (1) with an acid such as TFA in a solvent such as methylene chloride. The resulting amine TFA salt can be treated with an isocyanate in the presence of one equivalent of base to provide a compound of Formula I (3) wherein the P3 moiety is capped with a urea. As previously noted one skilled in the art will recognize that intermediate (2) can be used as starting materials for the preparation of compounds of Formula I wherein the P3 group is capped with an amide or a sulfonamide, or thiourea, or a sulfamide. The construction of said compounds of Formula I can be achieved using standard conditions for the formation of said P4 functionalities from amines. Scheme VI
In the construction of compounds of Formula I, the PT terminus is incorporated into the molecules using one of the general processes outlined above and described in more detail below. In some examples the PI" elements, that is the cycloalkyl- or
alkyl sulfonamides are commercially available or can be prepared from the corresponding alkyl- or cycloalkyl-sulfonyl chloride by treating said sulfonyl chloride with ammonia. Alternatively, these sulfonamides can be synthesized using the general process outline in Scheme VII. Therein commercially available 3-chloro-propylsulfonyl chloride (1) is converted to a suitable protected sulfonamide as for example by treatment with tert-butyl amine. The sulfonamide obtained (2) is then converted to the corresponding cycloalkylsulfonamide by treatment with two equivalents of a base such as butyl lithium in a solvent such as THF at low temperature. The resulting cycloalkylsulfonamide can be deprotected by treatment with an acid to provide the desired unprotected cycloalkylsulfoamide. Scheme VII
The PI elements utilized in generating compounds of Formula I are in some cases commercially available, but are otherwise synthesized using the methods described herein and subsequently incorporated into compounds of Formula I using the methods described herein. The substituted PI cyclopropylamino acids can be synthesized following the general process outline in Scheme VIII.
Treatment of commercially available or easily synthesized imine (1) with 1,4-dihalobutene (2) in presence of a base produces, provides the resulting imine (3). Acid hydrolysis of 3 then provides 4, which has an ally! substituent syn to the carboxyl group as a major product. The amine moiety of 4 can protected using a Boc group to provide the fully protected amino acid 5. This intermediate is a racemate which can be resolved by an enzymatic process wherein the ester moiety of 5 is cleaved by a protease to provide the corresponding carboxylic acid. Without being bound to any particular theory, it is believed that this reaction is selective in that one of the enantiomers undergoes the reaction at a much greater rate than its mirror image
providing for a kinetic resolution of the intermediate racemate. In the examples cited herein, the more preferred stereoisomer for integration into compounds of Formula I is 5a which houses the (1R, 2S) stereochemistry. In the presence of the enzyme, this enantiomer does not undergo ester cleavage and thereby this enantiomer 5a is recovered from the reaction mixture. However, the less preferred enantiomer ,5b with houses the (IS, 2R) stereochemistry undergoes ester cleavage, i.e., hydrolysis, to provide the free acid 6. Upon completion of this reaction, the ester 5a can be separated from the acid product 6 by routine methods such as, for example, aqueous extraction methods or chromotography.
Procedures for making P2 intermediates and compounds of Formula I are shown in the Schemes below. It should be noted that in many cases reactions are depicted for only one position of an intermediate. However, it is to be understood that such reactions could be used to impart modifications to other positions within this
intermediate. Moreover, said intermediates, reaction conditions and methods given in the specific examples are broadly applicable to compounds with other substitution patterns. The general Schemes outlined below are followed with examples herein. Both general and specific examples are non-limiting, as for example the isoquinoline nucleus is shown as part of the general scheme, Scheme IX, however, this pathway represents a viable process for the construction of alternate heterocycle substituents as replacements for the isoquinoline element, such as quinolines, or pyridines.
Scheme EX shows the coupling of an N-protected C4-hydroxyproline moiety with a heterocycle to form intermediate (4) and the subsequent modification of said intermediate (4) to a compound of Formula I by the process of peptide elongation as described herein. It should be noted that in the first step, that is the coupling of the C4-hydroxy proline group with the heteroaryl element, a base is employed. One skilled in the art would recognized that this coupling can be done using bases such as potassium tert-butoxide, or sodium hydride, in solvent such as DMF or DMSO or THF. This coupling to the isoquinoline ring system occurs at the Cl position (numbering for isoquinoline ring system shown in intermediate 2 of Scheme IX) and is directed by the chloro group which is displaced in this process. It should be noted that the alternative leaving groups can be utilized at this position such as a fluoro as shown in the Scheme. Said fluoro intermediates (3) are available from the corresponding chloro compound using literature procedures described herein. It should also be noted that the position of the leaving group (chloro or fluoro) in a given ring system can vary as shown in Scheme X, wherein the leaving group (fluoro
in this example) is in the C6 position of the isoquinoline ring system of intermediate
(2).
It should be further noted that the position of the ring heteroatom(s) in intermediates like (2) of Scheme IX and Scheme X is also variable, as defined by the term heterocycle described herein. In Scheme X intermediate (2) can be coupled to a C4 hydroxy proline derivative to provide the P2 element (3). This C6-substituted isoquinoline derivative can be converted to compounds of Formula I using the methods described herein.
An alternative to the method described above for the coupling of the C4-hydroxyproline to aromatics and heteroaromatics, is provided in the Mitsunobu reaction as depicted in
(Figure Remove)
step 1 of Scheme XI. In this general reaction Scheme a C4-hydroxy proline derivative is coupled to a quinazoline ring system. This reaction makes use of reagents such as triphenylphosphine and DEAD (diethylazodicarboxylate) in aprotic solvents such as THF or dioxane and can be used for the formation of aryl and heteroaryl ethers. Note that in the course of this coupling reaction the stereochemistry of the C4 chiral center in the C4-hydroxyproIine derivative is
inverted and thereby it is necessary to use the C4-hydroxyproline derivative housing the (S) stereochemistry at the C4 position as starting material, (as shown in Scheme XI). It should be noted that numerous modifications and improvements of the Mitsunobu reaction have been described in the literature, the teachings of which are incorporated herein.
In a subset of examples herein, isoquinolines are incorporated into the final compounds and specifically into the P2 region of said compounds. One skilled in the art would recognize that a number of general methods are available for the synthesis of isoquinolines. Moreoever, said isoquinolines generated by these methods can be readily incorporated into final compounds of Formula I using the processes described herein. One general methodology for the synthesis of isoquinolines is shown in Scheme XII, wherein cinnamic acid derivatives, shown in general form as structure (2) are
Scheme XII
Reference: N. Briet at al, Tetrahedron, 2002,5761
converted to 1-chloroisoquinolines in a four step process. Said chloroisoquinolines can be subsequently used in coupling reactions to C4-hydroxyproline derivatives as described herein. The conversion of cinnamic acids to chloroquinolines begins with the treatment of cinnamic acid with an alkylcholorformate in the presence of a base. The resulting anhydride is then treated with sodium azide which results in the formation of an acylazide (3) as shown in the Scheme. Alternate methods are available for the formation of acylazides from carboxylic acids as for example said carboxylic acid can be treated with diphenylphosphorylazide (DPPA) in an aprotic
in the presence of a base. In the next step of the reaction sequence the acylazide (3) is coverted to the corresponding isoquinolone (4) as shown in the Scheme. In the event the acylazide is heated to a temperature of approximately 190 degress celcius in a high boiling solvent such a diphenylmethane. This reaction is general and provides moderate to good yields of substituted isoquinolone from the corresponding cinnamic acid derivatives. It should noted that said cinnamic acid derivatives are available commercially or can be obtained from the corresponding benzaldehyde (1) derivative by direct condensation with malonic acid or derivatives thereof and also by employing a Wittig reaction. The intermediate isoquinolones (4) of Scheme XII can be converted to the corresponding 1-chloroisoquinoline by treatment with phosphorous oxychloride. This reaction is general and can be applied to any of the isoquinolones, quinolones or additional heterocycles as shown herein to covert a hydroxy substituent to the corresponding chloro compound when said hydroxy is in conjugation with a nitrogen atom in said heterocylic ring systems.
An alternative method for the synthesis of the isoquinoline ring system is the Pomeranz-Fritsh procedure. This general method is outlined in Scheme XIII. The process begins with the conversion of a benzaldehyde derivative (1) to a functionalized imine (2). Said imine is then converted to the isoquinoline ring system by treatment with acid at elevated Scheme XIII
temperature. This isoquinoline synthesis of Scheme XTTT is general, and it should be noted that this process is particularly useful in procuring isoquinoline intermediates
that are substituted at the C8 position (note: in intermediate (3) of Scheme XIII the C8 position of the isoquinoline ring is substituted with substutuent Rj i). The intermediate isoquinolines (3) can be converted to the corresponding 1-chloroquinolines (5) in a two step process as shown. The first step in this sequence is the formation of the isoquinoline N-oxide(4) by treatment of isoquinoline (3) with meta-chloroperbenzoic acid in an aprotic solvent such as dichloromethane. Intermediate (4) can be converted to the corresponding 1-chloroquinoline by treatment with phosphorous oxychloroide in refluxing chloroform. Note this two step process is general and can be employed to procure chloroisoquinolines and chloroquinolines from the corresponding isoquinolines and quinolines respectively.
Another method for the synthesis of the isoquinoline ring system is shown in Scheme XIV. In this process an ortho-alkylbenzamide derivative (1) is treated with a strong Scheme XIV
(Figure Removed)
base such as tert-butyl lithium in a solvent such as THF at low temperature. To this reaction mixture is then added a nitrile derivative, which undergoes an addition reaction with the anion derived from deprotonation of (1), resulting in the formation of (2). This reaction is general and can be used for the formation of substituted isoquinolines. Intermediate (2) of Scheme XIV can be converted to the corresponding 1-chloroquinoline by the methods described herein.
An additional method for the synthesis of isoquinolines is shown in Scheme XV. The deprotonation of intermediate (1) using tert-butyl lithium is described above. In the present method however, said intermediate anion is trapped by an ester, resulting in the formation of intermediate (2) as shown below. In a subsequent reaction ketone (2) is condensed with ammoniumn acetate at elevated temperature providing for the formation of quinolone (3). This reaction is general and can be applied for the construction of substituted isoquinolones which can then be converted to the corresponding 1-chloroisoquinolines as described herein.
(Figure Removed)
Yet an additional method for the construction of isoquinolines is found in Scheme XVI. In the first step of this process an ortho-alkylarylimine derivatives such as (1) is subjected to deprotonation conditions (sec-butyl lithium, THF) and the resulting anion is quenched by
(Figure Removed)
L. Flippin. J. Muchowski, JOC, 1993, 2531-2632
the addition of an activated carboxylic acid derivative such as a Weinreb amide. The
condensation with ammonium acetate at elevated temperatures. This method is general and can be used for the synthesis of substituted isoquinolines. Said isoquinolines can be converted to the. corresponding 1-chloroquinoline by the methods described herein.
The heterocycles described herein, and which are incorporated into the compounds of Formula I can be further functionalized. It is obvious to one skilled in the art that additional functionalization of said heterocycles can be done either before or after incorporation of these functionalities into compounds of Formula I. The following Schemes illustrate this point. For example Scheme XVII shows the conversion of a 1-chloro-
6-fluoro-isoquinoline to the corresponding l-chloro-6-alkoxy-isoquinoline species, by treatment of (1) of (eq.l) with a sodium or potassium alkoxide species in the alcohol solvent from which the alkoxide is derived at room temperature. In some cases it may be necessary to heat the reaction to drive it to completion. Said chloroquinoline can be incorporated into a compound of Formula I using the art described herein. Modifications of a P2 heterocyclic element can also be done after it's incorporation into compounds of Formula I as shown in (eq.2) of Scheme VXII. Specifically compounds such as (1) in (eq. 2) which contain a leaving group in the pthalazine nucleus can be displaced by a nucleophile such as an alkoxide in solvents such as the corresponding alcohol from which the alkoxide is derived. These reaction scan be conducted at room temperature but in some cases it may be necessary to heat the reaction to drive it to completion.
Scheme XVIII provides a general example for the modification of heterocycles as defined herein by employing palladium mediated coupling reactions. Said couplings can be employed to functionalize a heterocycle at each position of the ring system providing said ring is suitably activated or functionalized, as for example .with a chloride as shown in the Scheme. This sequence begins with 1-chloroisoquinoline (1) which upon treatment with metachloroperbenzoic acid can be con verted to the corresponding N-oxide (2). Said intermediate (2) can be converted to the corresponding 1,3-dichloroisoquinoline (3) by treatment with phosphorous
oxychloride in refluxing chloroform. Intermediate (3) can be coupled with N-Boc-4-hydroxyproline by the methods described herein to provide intermediate (5) as shown in the Scheme. Intermediate (5) can undergo a Suzuki coupling with an aryl boronic acid, in the presence of a palladium reagent and base, and in a solvent such as THF or toluene or DMF to provide the C3-arylisoquinoline intermediate (6). Heteroarylboronic acids can also be employed in this Pd mediated coupling process to provide C3-heteroarylisoquinolines. Intermediate (6) can be converted into final compounds of Formula I by the methods described herein. Scheme XVIII
Palladium mediated couplings of heteroaryl systems with aryl or heteroaryl elements can also be employed at a later synthetic stage in the construction of compounds of Formula I as shown in Scheme IXX. Therein tripeptide acylsulfonamide intermediate (1) is coupled to a l-chloro-3-bromoisoquinoline (2) using the previously described process of alkoxide displacement of an heteroarylhalo moiety to provide intermediate (3). The coupling of (1) and (2) is most efficient in the presence of a catalyst such as lanthanum chloride as described herein. The isoquinoline ring system of intermediate (3) can be further functionalized by employing either Suzuki couplings (Process 1: subjecting (3) to heteroaryl or aryl boronic acids in the presence of a palladium catalyst such as palladium tetra(triphenylphosphine) and a base such as cesium carbonate in solvents such as DMF) or Stille couplings (Process 2: subjecting (3) to heteraryl or aryl tin dervatives in the presence of palladium catalyst such as palladium tetra(triphenylphosphine in solvents such as toluene).
Palladium reactions can also be employed to couple C4-amino proline elements with functionalized heterocycles. Scheme XX shows intermediate (1) coupling with a functionalized isoquinoline in the presence of a palladium catalyst and a base in a solvent such as toluene. Intermediates like (3) can be converted to compounds of Formula I using the methods described herein. Scheme XX
The construction of functionalized isoquinoline ring systems is also ossible employing [4+2] cycloaddition reactions. For example (Scheme XXI) the use of vinyl isocyantes (1) in cycloaddition reactions with benzyne precusors (2) provides functionalized isoquinolones (3). Said isoquinolines can be incorporated into compounds of Formula I using the methods described herein.
The present invention also provides compositions comprising a compound of the present invention, or a pharmaceutically acceptable salt, solvate or prodrug thereof, and a pharmaceutically acceptable carrier. Pharmaceutical compositions of the present invention comprise a therapeutically effective amount of a compound of the invention, or a pharmaceutically acceptable salt, solvate or prodrug thereof, and a pharmaceutically acceptable carrier, with a pharmaceutically acceptable carrier, e.g., excipient, or vehicle diluent.
The active ingredient, i.e., compound, in such compositions typically comprises from 0.1 weight percent to 99.9 percent by weight of the composition, and
The pharmaceutical compositions of this invention may be administered orally, parenterally or via an implanted reservoir. Oral administration or administration by injection are preferred. In some cases, the pH of the formulation may be adjusted with pharmaceutically acceptable acids, bases or buffers to enhance the stability of the formulated compound or its delivery form. The term parenteral as used herein includes subcutaneous, intracutaneous, intravenous, intramuscular, intra- articular, intrasynovial, intrastemal, intrathecal, and intralesional injection or infusion techniques.
The pharmaceutical compositions may be in the form of a sterile injectable preparation, for example, as a sterile injectable aqueous or oleaginous suspension. This suspension may be formulated according to techniques known in the art using
suitable dispersing or wetting agents and suspending agents. The details concerning the preparation of such compounds are known to those skilled in the art.
When orally administered, the pharmaceutical compositions of this invention may be administered in any orally acceptable dosage form including, but not limited to, capsules, tablets, and aqueous suspensions and solutions. In the case of tablets for oral use, carriers which are commonly used include lactose and corn starch. Lubricating agents, such as magnesium stearate, are also typically added. For oral administration in a capsule form, useful diluents include lactose and dried corn starch. When aqueous suspensions are administered orally, the active ingredient is combined with emulsifying and suspending agents. If desired, certain sweetening and/or flavoring and/or coloring agents may be added.
Other suitable carriers for the above noted compositions can be found in standard pharmaceutical texts, e.g. in "Remington's Pharmaceutical Sciences", 19 th ed., Mack Publishing Company, Easton, Penn., 1995. Further details concerning the design and preparation of suitable delivery forms of the pharmaceutical compositions of the invention are known to those skilled in the art.
Dosage levels of between about 0.01 and about 1000 milligram per kilogram ("mg/kg") body weight per day, preferably between about 0.5 and about 250 mg/kg body weight per day of the compounds of the invention are typical in a monotherapy for the prevention and treatment of HCV mediated disease. Typically, the pharmaceutical compositions of this invention will be administered from about 1 to about 5 times per day or alternatively, as a continuous infusion. Such administration can be used as a chronic or acute therapy. The amount of active ingredient that may be combined with the carrier materials to produce a single dosage form will vary depending upon the host treated and the particular mode of administration.
As the skilled artisan will appreciate, lower or higher doses than those recited above may be required. Specific dosage and treatment regimens for any particular patient will depend upon a variety of factors, including the activity of the specific
compound employed, the age, body weight, general health status, sex, diet, time of administration, rate of excretion, drug combination, the severity and course of the infection, the patient's disposition to the infection and the judgment of the treating physician. Generally, treatment is initiated with small dosages substantially less than the optimum dose of the peptide. Thereafter, the dosage is increased by small increments until the optimum effect under the circumstances is reached. In general, the compound is most desirably administered at a concentration level that will generally afford antivirally effective results without causing any harmful or deleterious side effects.
When the compositions of this invention comprise a combination of a compound of the invention and one or more additional therapeutic or prophylactic agent, both the compound and the additional agent are usually present at dosage levels of between about 10 to 100%, and more preferably between about 10 and 80% of the dosage normally administered in a monotherapy regimen.
When these compounds or their pharmaceutically acceptable salts, solvates or orodrugs are formulated together with a pharmaceutically acceptable carrier, the resulting composition may be administered in vivo to mammals, such as man, to inhibit HCV NS3 protease or to treat or prevent HCV virus infection. Such treatment may also-be achieved using the compounds of this invention in combination with agents which include, but are not limited to: immunomodulatory agents, such as interferons; other antiviral agents such as ribavirin, amantadine; other inhibitors of HCV NS3 protease; inhibitors of other targets in the HCV life cycle such as helicase, polymerase, metalloprotease, or internal ribosome entry site; or combinations thereof. The additional agents may be combined with the compounds of this invention to create a single dosage form. Alternatively these additional agents may be separately administered to a mammal as part of a multiple dosage form.
Accordingly, another aspect of this invention provides methods of inhibiting H[VC NS3 protease activity in patients by administering a compound of the present
invention or a pharmaceutically acceptable salt or solvate thereof, wherein the substituents are as defined above.
In a preferred embodiment, these methods are useful in decreasing HCV NS3 protease activity in the patient. If the pharmaceutical composition comprises only a compound of this invention as the active component, such methods may additionally comprise the step of administering to said patient an agent selected from an immunomodulatory agent, an antiviral agent, aHCV protease inhibitor, or an inhibitor of other targets in the HCV life cycle such as, for example, helicase, polymerase, or metalloprotease. Such additional agent may be administered to the patient prior to, concurrently with, or following the administration of the compounds of this invention.
In an alternate preferred aspect, these methods are useful for inhibiting viral replication in a patient. Such methods can be useful in treating or preventing HCV disease.
The compounds of the invention may also be used as laboratory reagents. Compounds may be instrumental in providing research tools for designing of viral replication assays, validation of animal assay systems and structural biology studies to further enhance knowledge of the HCV disease mechanisms.
The compounds of this invention may also be used to treat or prevent viral contamination of materials and therefore reduce the risk of viral infection of laboratory or medical personnel or patients who come in contact with such materials, e.g., blood, tissue, surgical instruments and garments, laboratory instruments and garments, and blood collection or transfusion apparatuses and materials.
EXAMPLES
The specific examples that follow illustrate the syntheses of the compounds of the instant invention, and are not to be construed as limiting the invention in sphere or scope. The methods may be adapted to variations in order to produce compounds embraced by this invention but not specifically disclosed. Further, variations of the methods to produce the same compounds in somewhat different manner will also be evident to one skilled in the art.
Solution percentages express a weight to volume relationship, and solution ratios express a volume to volume relationship, unless stated otherwise. Nuclear magnetic resonance (NMR) spectra were recorded either on a Bruker 300,400 or 500 MHz spectrometer; the chemical shifts (6) are reported in parts per million. Flash chromatography was carried out on silica gel (SiC^) according to Still's flash chromatography technique (W.C. Still et al., J. Org. Chem., (1978), 43, 2923).
All Liquid Chromatography (LC) data were recorded on a Shimadzu
Spectrometry (MS) data were determined with a Micromass Platform for LC in electrospray mode (ES+).
Unless otherwise noted, in the following examples each compound was analyzed by LC/MS, using one of seven methodologies, having the following conditions. Columns: (Method A) - YMC ODS S7 CIS 3.0x50 mm
(Method B) - YMC ODS-A S7 CIS 3.0x50 mm
(Method C) - YMC.S7 CIS 3.0x50 mm
(Method D) - YMC Xterra ODS S7 3.0x50 mm
(Method E) - YMC Xterra ODS S7 3.0x50 mm
(Method F) - YMC ODS-A S7 CIS 3.0x50 mm
(Method G) - YMC CIS S5 4.6x50 mm] Gradient: 100% Solvent A/0% Solvent B to
0% Solvent A/100% Solvent B
Gradient time: 2 min. (A, B, D, F, G); 8 min. (C, E)
Hold time: 1 min. (A, B, D, F, G); 2 min. (C, E)
Flow rate: 5 mL/min
Detector Wavelength: 220 nm
Solvent A: 10% MeOH / 90% H20 / 0.1% TFA
Solvent B: 10% H2O / 90% MeOH / 0.1% TFA.
The abbreviations used in the present application, including particularly in the illustrative examples which follow, are well-known to those skilled in the art. Some of the abbreviations used are as follows:
rt
Boc
DMSO
EtOAc
t-BuOK
Et2O
TBME
THF
GDI
DBU
TFA
NMM
HATU
HBTU
HOBT PyBrop
DMF MeOH
room temperature
tert-butyloxycarbonyl
dimethylsulfoxide
ethyl acetate
potassium t-butoxide
diethyl ether
tert-butylmethyl ether
tetrahydrofuran
carbonyldiimidazole
l,8-diazabicyclo[5.4.0]undec-7-ene
trifluoroacetic acid
N-methylmorpholine
O-7-azabenzotriazol-1 -yl
0-{ lH-benzotriazol-l-yl)-N,N,N' ,N'-
tetramethyluroniumhexafluorophosphate
N-hydroxybenzotriazole
bromo-bis-pyrrolidine-phosphonium
hexafluorophosphate
dimethylformamide
methanol
EDTA ethylenediaminetetraacetic acid
HRMS high resolution mass spectrometry
DMAP 4-dimethylaminopyridine
DIPEA diisopropylethylamine
DCM dichloromethane
DCE dichloroethane
The compounds and chemical intermediates of the present invention, described in the following examples, were prepared according to the following methods. It should be noted that the following exemplification section is presented in sections. The sections are titled Section A through K. Example numbers and compound numbers are not contiguous throughout the entire Examples portion of the application and hence, each section indicates a "break" in the numbering. The numbering within each section is generally contiguous. Section L describes the biological activity of the compounds. Section M describes a subset of additional compounds that could be made using the methods described herein.
Section A:
Preparation of Intermediates: Preparation of PI Intermediates:
The PI intermediates described in this section can be used to prepare compounds of Formula I by the methods described herein.
I PI elements:
1. Preparation of racemic (l/f,2S)/(15,2/?)-l-amino-2-vinyIcyclopropane carboxylic acid ethyl ester
C1H3N xC02Et
Glycine ethyl ester hydrochloride (303.8 g, 2.16 mole) was suspended in butylmethyl ether (1.6 L). Benzaldehyde (231 g, 2.16 mole) and anhydrous sodium sulfate (154.6 g, 1.09 mole) were added and the mixture cooled to 0 °C using an ice-water bath. Triethylamine (455 mL, 3.26 mole) was added dropwise over 30 min and the mixture stirred for 48 h at it. The reaction was then quenched by addition of ice-cold water (1 L) and the organic layer was separated. The aqueous phase was extracted with te/t-butylmethyl ether (0.5 L) and the combined organic phases washed with a mixture of saturated aqueous NaHCOs (1 L) and brine (1 L). The solution was dried over MgSC>4, concentrated in vacuo to afford 392.4 g of the N-benzyl imine product as a thick yellow oil that was used directly in the next step. 'H NMR (CDC13,300 MHz) 8 1.32 (t, .7=7.1 Hz, 3H), 4.24 (q, 7=7.1 Hz, 2H), 4.41 (d, 7=1.1 Hz, 2H), 7.39-7.47 (m, 3H), 7.78-7.81 (m, 2H), 8.31 (s, 1H).
To a suspension of lithium te/t-butoxide (84.06 g, 1.05 mol) in dry toluene (1,2 L), was added dropwise a mixture of the A/-benzyl imine of glycine ethyl ester (100.4 g, 0.526 mol) and rran^-l,4-dibromo-2-butene (107.0 g, 0.500 mol) in dry
toluene (0.6 L) over 60 min. After completion of the addition, the deep red mixture was quenched by addition of water (1 L) and fe/t-butylmethyl ether (TBME, 1 L). The aqueous phase was separated and extracted a second time with TBME (1 L). The organic phases were combined, 1 N HC1 (1 L) was added and the mixture stirred at room temperature for 2 h. The organic phase was separated and extracted with water (0.8 L). The aqueous phases were then combined, saturated with salt (700 g), TBME (1 L) was added and the mixture cooled to 0 °C. The stirred mixture was then basified to pH 14 by the dropwise addition of 10 N NaOH, the organic layer separated, and the aqueous phase extracted with TBME (2 x 500 mL). The combined organic extracts were dried (MgSO4) and concentrated to a volume of 1L. To this solution of free amine, was added BOC2O or di-fe/t-butyldicarbonate (131.0 g, 0.6 mol) and the mixture stirred 4 days at it. Additional di-tert-butyldicarbonate (50 g, 0.23 mol) was added to the reaction, the mixture refluxed for 3 h, and was then allowed cool to room temperature overnight. The reaction mixture was dried over MgSCU and concentrated in vacuo to afford 80 g of crude material. This residue was purified by flash chromatography (2.5 Kg of SiO2, eluted with 1% to 2% MeOH/CH2Cl2) to afford 57 g (53%) of racemic A^-Boc-(l/?,25)/(15,2/?)-l-amino-2-vinylcyclopropane carboxylic acid ethyl ester as a yellow oil which solidified while sitting in the refrigerator: 'HNMR (CDC13, 300 MHz) 5 1.26 (t, 7=7.1 Hz, 3H), 1.46 (s, 9H), 1.43-1.49 (m, 1H), 1.76-1.82 (br m, 1H), 2.14 (q, 7=8.6 Hz, 1H), 4.18 (q, 7=7.2 Hz, 2H), 5.12 (dd 7=10.3,1.7 Hz, 1H), 5.25 (br s, 1H), 5.29 (dd, 7=17.6,1.7 Hz, 1H), 5.77 (ddd, 7=17.6,10.3, 8.9 Hz, 1H); MS m/z 254.16 (M-l)
Step 3 Preparation of Racemic (lR,2S)/( 15,27?) l-amino-2-vinylcyclopropane carboxylic acid ethyl ester hydrochloride
A^-Boc-(l/?,25)/(l,S)2/?)-l-amino-2-vinylcyclopropane carboxylic acid ethyl ester (9.39 g, 36.8 mmo!) was dissolved in 4 N HCl/dioxane (90 ml, 360 mmol) and
was stirred for 2 h at it. The reaction mixture was concentrated to supply (l^,25)/(l,S,2/?)-l-amino-2-vinylcyclopropane carboxylic acid ethyl ester hydrochloride in quanitative yield (7 g, 100%). *H NMR (methanol-d4) 51.32 (t, .7=7.1, 3H), 1.72 (dd, 7=10.2,6.6 Hz, IH), 1.81 (dd, 7=8.3, 6.6 Hz, IH), 2.38 (q, 7=8.3 Hz, IH), 4.26-4.34 (m, 2H), 5.24 (dd, 10.3,1.3 Hz, IH) 5.40 (d, 7=17.2, IH), 5.69-5.81 (m, IH).Alternate route for the preparationof Racemic N-Boc-l-minvinylcyclopropane carboxylic acid ethyl ester hydrochloride
To a solution of potassium tert-butoxide (11.55 g, 102.9 mmol) in THF (450 mL) at -78 °C was added the commercially available AUV-dibenzyl imine of glycine ethyl ester (25.0 g, 93.53 mmol) in THF (112 mL). The reaction mixture was warmed to 0 °C, stirred for 40 min, and was then cooled back to -78 °C. To this solution was added rrans-l,4-dibromo-2-butene (20.0 g, 93.50 mmol), the mixture stirred for 1 h at 0°C and was cooled back to -78°C. Potassium terr-butoxide (11.55
g, 102.9 mmol) was added, the mixture immediately warmed to 0°C, and was stirred one more hour before concentrating in vacuo. The crude product was taken up in Et20 (530 mL), IN aq. HC1 solution (106 mL, 106 mmol) added and the resulting biphasic mixture stirred for 3.5 h at rt. The layers were separated and the aqueous layer was washed with EtjO (2x) and basified with a saturated aq. NaHCO3 solution. The desired amine was extracted with Et2O (3x) and the combined organic extract was washed with brine, dried (MgSC>4), and concentrated in vacuo to obtain the free amine. This material was treated with a 4N HC1 solution in dioxane (100 mL, 400 mmol) and concentrated to afford (l#,2S)/(lS,2#)-l-amino-2-vinylcyclopropane carboxylic acid ethyl ester hydrochloride as a brown semisolid (5.3 g, 34% yield) identical to the material obtained from procedure A, except for the presence of a small unidentified aromatic impurity (8%).
Resolution of W-Boc-(l/?,2S)/(lS,2tf)-l-amino-2-vinyIcycIopropane carboxylic acid ethyl ester
Resolution A
To an aqueous solution of sodium phosphate buffer (0.1 M, 4.25 liter ("L"), pH 8) housed in a 12 Liter jacked reactor, maintained at 39°C, and stirred at 300 rpm was added 511 grams of Acalase 2.4L (about 425 mL) (Novozymes North America Inc.). When the temperature of the mixture reached 39°C, the pH was adjusted to 8.0 by the addition of a 50% NaOH in water. A solution of the racemic W-Boc-
carboxylic acid ethyl ester (85g) in 850 mL of DMSO was then added over a period of 40 min. The reaction temperature was then maintained at 40°C for 24.5h during which time the pH of the mixture was adjusted to 8.0 at the 1.5h and 19.5h time points using 50% NaOH in water. After 24.5h, the enantio-excess of the ester was determined to be 97.2%, and the reaction was cooled to room temperature (26°C) and stirred overnight (I6h) after which the enantio-excess of the ester was determined to be 100%. The pH of the reaction mixture was then adjusted to 8.5 with 50% NaOH and the resulting mixture was extracted with MTBE (2x2 L). The combined MTBE extract was then washed with 5% NaHCOs (3 x 100 mL), water (3 x 100 mL), and evaporated in vacua to give the enantiomerically pure 7vVBoc-(lft,2S)/-l-amino-2-vinylcyclopropane carboxylic acid ethyl ester as light yellow solid (42.55 g; purity: 97% @ 210 nm, containing no acid; 100% enantiomeric excess ("ee")-
The aqueous layer from the extraction process was then acidified to pH 2 with 50% H2SO4 and extracted with MTBE (2x2 L). The MTBE extract was washed with water (3 x 100 mL) and evaporated to give the acid as light yellow solid (42.74 g; purity: 99% @ 210 nm, containing no ester).
To 0.5 mL 100 mM Heps«Na buffer (pH 8.5) in a well of a 24 well plate (capacity: 10 ml/well), 0.1 mL of Savinase 16.0L (protease from Bacillus clausii) (Novozymes North America Inc.) and a solution of the racemic N-Boc-(l/?,2S)/(lS,2#)-l-amino-2-vinylcyclopropane carboxylic acid ethyl ester (10 mg) in
0.1 mL of DMSO were added. The plate was sealed and incubated at 250 rpm at 40°C. After 18h, enantio-excess of the ester was determined to be 44.3% as following: 0.1 mL of the reaction mixture was removed and mixed well with 1 mL ethanol; after centrifugation, 10 microliter ("M>1") of the supernatant was analyzed with the chiral HPLC. To the remaining reaction mixture, 0.1 mL of DMSO was added, and the plate was incubated for additional 3 days at 250 rpm at 40°C, after which four mL of ethanol was added to the well. After centrifugation, 10 u.1 of the supernatant was analyzed with the chiral HPLC and enantio-excess of the ester was determined to be 100%.
Resolution C
To 0.5 ml 100 mM Heps*Na buffer (pH 8.5) in a well of a 24 well plate (capacity: 10 mL/well), 0.1 ml of Esperase 8.0L, (protease from Bacillus halodurans) (Novozymes North America Inc.) and a solution of the racemic Af-Boc-(l/?,2S)/(lS,2/?)-l-amino-2-vinylcyclopropane carboxylic acid ethyl ester (10 mg) in 0.1 mL of DMSO were added. The plate was sealed and incubated at 250 rpm at 40°C. After 18 hour, enantio-excess of the ester was determined to be 39.6% as following: 0.1 mL of the reaction mixture was removed and mixed well with 1 mL ethanol; after cenrifugation, 10 u,l of the supernatant was analyzed with the chiral HPLC. To the remaining reaction mixture, 0.1 mL of DMSO was added, and the plate was incubated for additional 3 days at 250 rpm at 40°C, after which four mL of ethanol was added to the well. After centrifugation, 10 u,l of the supernatant was analyzed with the chiral HPLC and enantio-excess of the ester was determined to be 100%.
Samples analysis was carried out in the following manner:
1) Sample preparation: About 0.5 ml of the reaction mixture was mixed well with 10 volume of EtOH. After centrifugation, 10 ul of the supernatant was injected onto HPLC column.
2) Conversion determination:
Column: YMC ODS A, 4.6 x 50 mm, S-5 jam
Solvent: A, 1 mM HC1 in water; B, MeCN
Gradient: 30% B for 1 min; 30% to 45% B over 0.5 min; 45% B for 1.5 min; 45% to
30% B over 0.5 min.
Flow rate: 2 ml/min
UV Detection: 210 nm
Retention time: acid, 1.2 min; ester, 2.8 min.
3) Enantio-excess determination for the ester:
Column: CfflRACEL OD-RH, 4.6 x 150 mm, S-5 u,m
Mobile phase: MeCN/50 mM HC1O4 in water (67/33)
Flow rate: 0.75 ml/min.
UV Detection: 210 nm.
Retention time:
(IS, 2R) isomer as acid: 5.2 min;
P.^aem3.te: 18.5 min and 20.0 min'
(1R, 2S) isomer as ester: 18.5 min.
2. Preparation of #-Boc-(l/?,2S)-l-amino-2-cyclopropyIcyclopropane carboxylic acid ethyl ester
A solution of//-Boc-(l/?,25)-l-amino-2-vinylcyclopropane carboxylic acid (255 mg, 1.0 mmol) in ether (10 mL) was treated with palladium acetate (5 mg, 0.022 mmol). The orange/red solution was placed under an atmosphere of N2. An excess of diazomethane in ether was added dropwise over the course of 1 h. The resulting solution was stirred at rt for 18 h. The excess diazomethane was removed using a
stream of nitrogen. The resulting solution was concentrated by rotary evaporation to give the crude product. Flash chromatography (10% EtOAc/hexane) provided 210 mg (78%) of /V-Boc-(l/?,25)-l-amino-2-cyclopropylcyclopropane carboxylic acid ethyl ester as a colorless oil. LC-MS (retention time: 2.13, similar to method A except: gradient time 3 min, Xterra MS CIS S7 3.0 x 50mm column), MS m/e 270
3. 1-tert-butoxycarbonylamino-cyclopropane-carboxylic acid is commercially
available
4. Preparation of 1-aminocyclobutanecarboxylic acid methyl
esterhydrochloride
1-aminocyclobutanecarboxylic acid (100 mg, 0.869 mmol)(Tocris) was dissolved in 10 mL of MeOH, HC1 gas was bubbled in for 2h. The reaction mixture was stirred for 18 h, and then concentrated in vacuo to give 144 mg of a yellow oil. Trituration with 10 mL of ether provided 100 mg of the titled product as a white solid. 'H NMR (CDC13) 5 2.10-2.25 (m, 1H), 2.28-2.42 (rn, 1H), 2.64-2.82 (m, 4H), 3.87 (s, 3H), 9.21 (br s, 3H).
5. Preparation of racemic (1R,2R)/(1S,2S) l-Amino-2-ethylcyclopropanecarboxylic acid tert-butyl ester, shown below.
Step 1: Preparation of 2-Ethylcyclopropane-l,l-dicarboxylic acid di-re/t-butyl ester, shown below.
To a suspension of benzyltriethylammonium chloride (21.0 g, 92.2 mmol) in a 50% aqueous NaOH solution (92.4 g in 185 mL H2O) was added 1,2-dibromobutane (3O.O g, 138.9 mmol) and di-tert-butylmalonate (20.0 g, 92.5 mmol). The reaction mixture was vigorously stirred 18 h at it, a mixture of ice and water was then added. The crude product was extracted with CH2Cl2 (3x) and sequentially washed with water (3x), brine and the organic extracts combined. The organic layer was dried (MgSO4), filtered and concentrated in vacuo. The resulting residue was flash chromatographed (100 g SiO2, 3% Et2O in hexane) to afford the titled product (18.3 g, 67.8 mmol, 73% yield) which was used directly in the next reaction.
Step 2: Preparation of racemic 2-Ethylcyclopropane-l,l-dicarboxylic acid tert-butyl ester, shown below.
The product of Step 1 (18.3 g, 67.8 mmol) was added to a suspension of potassium tert-butoxide (33.55 g, 299.0 mmol) in dry ether (500 mL) at 0 °C, followed by H20 (1.35 mL, 75.0 mmol) and was vigorously stirred overnight at it. The reaction mixture was poured in a mixture of ice and water and washed with ether (3x). The aqueous layer was acidified with a 10% aq. citric acid solution at 0°C and extracted with EtOAc (3x). The combined organic layers were washed with water (2x), brine, dried (MgS04) and concentrated in vacuo to afford the titled product as a pale yellow oil (10 g, 46.8 mmol, 69% yield).
Step 3: Preparation of (1R,2R)I(1S,2S) 2-Ethyl-l-(2-
trimethylsilanylethoxycarbonylamino)cyclopropane-carboxylic acid tert-butyl ester, shown below.
o a suspension, of the product of Step 2 (10 g, 46.8 mmol) and 3 g of freshly activated 4A molecular sieves in dry benzene (160 mL), was added EtsN (7.50 mL, 53.8 mmol) andDPPA (11 mL, 10.21 mmol). The reaction mixture was refluxed for 3.5 h, 2-trimethylsilyl-ethanol (13.5 mL, 94.2 mmol) was then added, and the reaction mixture was refluxed ovemite. The reaction mixture was filtered, diluted with EtaO, washed with a 10% aqueous citric acid solution, water, saturated aqueous NaHCO3, water (2x), brine (2X), dried (MgSO4) and concentrated in vacuo. The residue was suspended with lOg of Aldrich polyisocyanate scavenger resin in 120 mL of CHaCb, stirred at rt ovemite and filtered to afford the titled product (8 g, 24.3 mmol; 52%) as a pale yellow oil: ]H NMR (CDC13) 6 0.03 (s, 9H), 0.97 (m, 5H), 1.20 (bm, 1H), 1.45 (s, 9H), 1.40-1.70 (m, 4H), 4.16 (m, 2H), 5.30 (bs, 1H). Step 4: Preparation of racemic (1R,2R)/(1S,2S) l-Amino-2-ethylcyclopropanecarboxylic acid tert-butyl ester, shown below.
To the product of Step 3 (3 g, 9 mmol) was added a 1.0 M TBAF solution in THF (9.3 mL, 9.3 mmol) and the mixture heated to reflux for 1.5 h, cooled to rt and then diluted with 500 ml of EtOAc. The solution was successively washed with water (2x100 mL), brine (2x100 mL), dried (MgSO4), concentrated in vacuo to provide the title intermediate
II Plv elements:
The PI" elements prepared below can be used to preapre compounds of Formula I by using the methods described herein.
1. Preparation of cyclopropylsulfonamide:
Step 1: Preparation of N-tert-Butyl-(3-chloro)propylsulfonamide
tert-Butylamine (3.0 mol, 315.3 mL) was dissolved in THF (2.5 L). The solution was cooled to - 20°C. 3-Chloropropanesulfonyl chloride (1.5 mol, 182.4 mL) was added slowly. The reaction mixture was allowed to warm to rt and stirred for 24 h. The mixture was filtered, and the filtrate was concentrated in vacuo. The residue was dissolved in CH2C12 (2.0 L). The resulting solution was washed with 1 N HC1 (1.0 L), water (1.0 L), brine (1.0 L) and dried over Na2SC>4. It was filtered and concentrated in vacuo to give a slightly yellow solid, which was crystallized from hexane to afford
th.o rn-nHiwt ac ?> u/hitp cnliH C\\(\ ft o QQ
'H NMR (CDC13) 5 1.38 (s, 9H), 2.30-2.27 (m, 2H), 3.22 (t, J = 7.35 Hz, 2H), 3.68
(t,7=6.2Hz,2H),4.35(b, 1H).
Step 2: preparation of Cyclopropanesulfonic acid text-butyl amide
To a solution of N-tert-butyl-(3-ch]oro)propylsulfonamide (2.14 g, 10.0 mmol) in THF (100 mL) was added n-BuLi (2.5 M in hexane, 8.0 mL, 20.0 mmol) at-78°C. The reation mixture was allowed to warm up to room temperature over period of 1 h. The volatiles were removed in vacuo. The residue was partitioned between EtOAC and water (200 mL, 200 mL). The separated organic phase was washed with brine, dried over Na2SC>4, filtered and concentrated in vacuo. The residue was recrystallized from hexane to yield the desired product as a white solid (1.0 g, 56%). JHNMR (CDCh 5 0.98-1.00 (m, 2H), 1.18-1.19 (m, :r 1.39 (s, 9H), 2.48-2.51 (m, 1H). 4.19 (b. H).
Step 3: preparation of cyclopropyisulfonamide
A solution of cyclopropanesulfonic acid tert-butyl amide (110.0 g, 0.62 mol) in TFA (500 mL) was stirred at room temperature for 16 h. The volatile was removed in vacuo. The residue was recrystallized from EtOAC/hexane (60 mL/240 mL) to yield the desired product as a white solid (68.5 g, 91%).
'H NMR (DMSO-de) 8 0.84-0.88 (m, 2H), 0.95-0.98 (m, 2H), 2.41-2.58 (m, 1H), 6.56 (b, 2H).
2. Alternate procedure for the preparation of cyclop ropy 1 sulfonamide
To a solution of 100 mL of THF cooled to 0 °C was bubbled in gaseous ammonia until saturation was reached. To this solution was added a solution of 5 g (28.45 mmol) of cyclopropylsulfonyl chloride (purchased from Array Biopharma) in 50 mL of THF, the solution warmed to rt overnite and stirred one additional day. The mixture was concentrated until 1-2 mL of solvent remained, applied onto 30 g plug of SiO2 (eluted with 30% to 60% EtOAc/Hexanes) to afford 3.45g (100%) of cyclopropyl sulfonamide as a white solid. JH NMR (Methanol-d4) 8 0.94-1.07 (m, 4H), 2.52-2.60 (m, 1H); 13C NMR (methanol-cU) 8 5.92, 33.01.
3. Preparation of cyclobutyl sulfonamide
To a solution of 5.0 g (37.0 mmol) of cyclobutyl bromide in 30 mL of anhydrous diethyl ether (Et2O) cooled to -78 °C was added 44 mL (74.8 mmol) of 1.7M lert-butyl lithium in pentanes and the solution slowly warmed to -35 °C over 1.5 h. This mixture was cannulated slowly into a solution of 5.0 g (37.0 mmol) freshly distilled sulfuryl chloride in 100 mL of hexanes cooled to -40 °C, warmed to 0 °C over 1 h and carefully concentrated in vacuo. This mixture was redissolved in EtaO, washed
once with some ice-cold water, dried (MgSO4) and concentrated carefully. This mixture was redissolved in 20 mL of THF, added dropwise to 500 mL of saturated NH3 in THF and was allowed to stir overnite. The mixture was concentrated in vacuo to a crude yellow solid and was recrystallized from the minimum amount of CH2C12 in hexanes with 1-2 drops of MeOH to afford 1.90 g (38%) of cyclobutylsulfonamide as a white solid. !H NMR (CDC13) 6 1.95-2.06 (m, 2H), 2.30-2.54 (m, 4H), 3.86 (p, J=B Hz, 1H), 4.75 (brs, 2H); I3C NMR (CDC13) 5 16.43,23.93, 56.29. HRMS m/z (M-H)' calcd for C4H8NSO2: 134.0276, found 134.0282.
4 Preparation of cyclopentyl sulfonamide
A solution of 18.5 mL (37.0 mmol) of 2M cyclopentyl-magnesium chloride in ether was added dropwise to a solution of 3.0 mL (37.0 mmol) freshly distilled sulfuryl chloride (obtained from Aldrich) in 100 mL of hexanes cooled to -78 °C. The mixture was warmed to 0 °C over 1 h and was then carefully concentrated in vacuo.
water (200 mL), dried (MgSO4) and concentrated carefully. This mixture was redissolved in 35 mL of THF, added dropwise to 500 mL of saturated NH3 in THF and was allowed to stir ovemite. The mixture was concentrated in vacuo to a crude yellow solid, the residue filtered through 50g of silica gel using 70% EtOAc-hexanes as the eluent and the solution was then concentrated. The residue was recrystallized from the minimum amount of CH2Cl2 in hexanes with 1-2 drops of MeOH to afford 2.49 g (41%) of cyclopentylsulfonamide as a white solid. 'HNMR (CDC13) 5 1.58-1.72 (m,2H), 1.74-1.88 (m, 2H), 1.94-2.14 (m, 4H), 3.48-3.59 (m, !H),4.80(bs, 2H); I3C NMR (CDC13) 8 25.90, 28.33,63.54; MS m/e 148 (M-H)5. Preparation of cyclohexyl sulfonamide
A solution of 18.5 mL (37.0 mmol) of 2M cyclohexylmagnesium chloride (TCI Americas) in ether was added dropwise to a solution of 3.0 mL (37.0 mmol) freshly distilled sulfuryl chloride in 100 mL of hexanes cooled to -78 °C. The mixture was warmed to 0 °C over 1 h and was then carefully concentrated in vacuo. This mixture was redissolved in Et2O (200 mL), washed once with some ice-cold water (200 mL), dried (MgSC>4) and concentrated carefullyThis mixture was redissolved in 35 mL of THF, added dropwise to 500 mL of saturated NH3 in THF and was allowed to stir ovemite. The mixture was concentrated in vacuo to a crude yellow solid, the residue filtered through 50g of silica gel using 70% EtOAc-hexanes as the eluent and was concentrated. The residue was recrystallized from the minimum amount of Cl^Cb in hexanes with 1-2 drops of MeOH to afford 1.66 g (30%) of cyclohexyl-sulfonamide as a white solid: 'H NMR (CDC13) 5 1.11-1.37 (m, 3H), 1.43-1.56 (m, 2H), 1.67-1.76 (m, 1H), 1.86-1.96 (m, 2H), 2.18-2.28 (m, 2H), 2.91 (tt, .7=12, 3.5 Hz, 1H), 4JO (bs, 2H); 13CH NMR (CDC13) 8 25.04, 25.04, 26.56, 62.74; MS m/e 162 (M-1V.
6. Preparation of neopentylsulfonamide
Following the procedure for the prep of cyclohexyl sulfonamide, 49 mL (37 mmol) of 0.75M neopentylmagnesium chloride (Alfa) in ether was converted to 1.52g (27%) of neopentylsulfonamide as a white solid. 1H NMR (CDC13) 51.17 (s, 9H), 3.12 (s, 2H), 4.74 (brs, 2H); 13C NMR (CDC13) 6 29.46,31.51, 67.38; MS m/e 150 (M-iy.
7. Preparation of cyclobutylcarbinyl-sulfonamide
A solution of 12.3 g (83 mmol) of cyclobutylcarbinyl bromide (Aldrich) and 13.7g (91 mmol) of sodium iodide in 150 mL of acetone was refluxed overnite and then cooled to it. The inorganic solids were filtered off and the acetone and
cyclopropylcarbinyl iodide (8.41g, 46%) distilled off at ambient and 150 torr at 80 °C, respectively.
A solution of 4.0 g (21.98 mmol) of cyclobutyl carbinyl iodide in 30 mL of anhydrous diethyl ether (Et2O) cooled to -78 °C was cannulated into a solution of 17 mL (21.98 mmol) of 1.3M sec-butyl lithium in cyclohexanes and the solution was stirred for 5 min. To this mixture was cannulated a solution of 3.0 g (21.98 mmol) of freshly distilled sulfuryl chloride in 1 10 mL of hexanes cooled to -78 °C, the mixture warmed to it over 1 h and was then carefully concentrated in vacuo. This mixture was redissolved in Et2O, washed once with some ice-cold water, dried (MgS04) and concentrated carefully. This mixture was redissolved in 30 mL of THF, added dropwise to 500 mL of saturated NHs in THF and was allowed to stir overnite. The mixture was concentrated in vacuo to a crude yellow solid and was recrystallized from the minimum amount of CKbCfe in hexanes with 1-2 drops of MeOH to afford 1.39 g (42%) of cyclobutyl carbinylsulfonamide as a white solid. 'H NMR (CDC13) 5 1.81-2.03 (m, 4H), 2.14-2.28 (m, 2H), 2.81-2.92 (m, 1H), 3.22 (d, 7=7 Hz, 2H), 4.74 (brs, 2H); I3C NMR (CDC13) 6 19.10, 28.21, 30.64, 60.93; MS m/e 148 (M-l)\ time: 1 .73, method B), 818 (M++H)
8: Preparation of cyclopropylcarbinyl-sulfonamide
Using the procedure employed for the preparation of cyclobutylcarbinyl-sulfonamide, cyclopropylcarbinyl sulfonamide was prepared from cyclopropylcarbinyl bromide (Aldrich) (see also JACS 1981, p.442-445). JH NMR (CDC13) 8 0.39-0.44 (m, 2H), 0.67-0.76 (m,2H), 1.13-1.27 (m, 1H),3.03 (d, 7=7.3 Hz, 2H), 4.74 (brs, 2H); 13C NMR (CDC13) 5 4.33, 5.61, 59.93; MS m/e 134 (M-l).
Ill Heterocycles to be used as starting material in the construction of P2 elements for subsequent incorporation into compounds of Formula I.
soquinoline (1) and substituted analogues thereof, can be incorporated into P2 elements using the two methods outline above and described in detail herein. Said P2 elements (3) can then be converted into compounds of Formula I using procedures analogous to those described herein for similar isoquinoline analogues.
Isoxazole and oxazole heterocycle (1) and analogues thereof can be prepared using know chemistry and incorporated into compounds of Formula I using the chemistry described herein for similar isoxazolepyridine intermediates as shown in section B.
Section B:
In Section B the following conditions were used for LC/MS analysis.
Columns: Method A: YMC ODS-A C18 S7 (4.6 x 33 mm) Method B: YMC Xterra ODS S7 (3.0 x 50mm) Method C: Xterra ms CIS (4.6 x 33mm) Method D: YMC ODS-A CIS S3 (4.6 x 33 mm)
Gradient: 100% solvent A/ 0% solvent B to 0% solvent A/100% solvent B
Gradient time: 3 min.
Hold Time: 1 min.
Flow Rate: 5 mL/min.
Detector Wavelength: 220 nm.
Solvents: Solvent A: 10% MeOH/ 90% water/ 0.1% TFA. Solvent B: 90% MeOH/
10% water/0.1% TFA.
The following conditions were used for prep-HPLC separation.
Columns: Phenomenex-Luna 30X100 mm, S5
Gradient: 60% solvent A/40% solvent B to 0% solvent A/ 100% solvent B
Gradient time: 15 min.
Stop Time: 20 min.
Flow Rate: 30 mL/min.
Detector Wavelength: 220 nm.
Solvents: Solvent A: 10% MeOH/ 90% water/ 0.1% TFA. Solvent B: 90% MeOH/
10% water/0.1% TFA.
Step 1:
A mixture of 3,5-dimethyl-4-nitro-isoxazole (1.42 g, 10.0 mmol), phenylacetaldehyde (1.32 g, 11.0 mmol) in piperidine (1 rnL) and ethanol (10 mL) was heated to reflux for 16 h. After cooling down to the ambient temperature, the product precipitated out was collected by filtration. The cake was washed with cold ethanol thoroughly to afford 1.20 g (53%) of the desired product as a white solid. 'H NMR (CDC13) 8 2.87 (s, 3H), 7.46-7.50 (m, 3H), 7.56 (d, 7=8.5 Hz, 1H), 7.7-7.80 (m,2H);
LC-MS (retention time: 1.19 min, method B), MS m/z 221 (M*+H). Step 2:
A solution of 3-methyl-5-phenyl-isoxazolo[4,5-b]pyridine 4-oxide (1.00 g, 4.40 mmol) and POC13 (2.71 g, 17.7 mmol) in chloroform (10 mL) was heated to reflux for 1 h. After cooling down to the ambient temperature, the final solution was diluted with chloroform (50 mL) and washed with NaHCOs (aq.) (two 50 mL portions) and brine, dried over MgSC>4, filtered, evaporated. The residue was purified by flash chromatography (4:1 hexane-EtOAc) to afford 790 mg (73%) of the desired product as a white solid.
'H NMR (CDC13) 5 2.72 (s, 3H), 7.46-7.54 (m, 3H), 7.91 (s, IH), 8.00-8.03 (m, 2H); LC-MS (retention time: 1.76 min, method B), MS m/z 245,247 (IvT+H).
Scheme 2
To a mixture of 4-hydroxy-pyrrolidine-2-carboxylic acid methyl ester (H-Hyp-OMe HC1) (1.81 g, 10.0 mrnol), HATU (5.70 g, 15.0 mmol), and N-BOC-t-butyl-L-glycine (2.42 g, 10.5 mmol) in CH2C12 (100 mL) was added DIPEA (3.47 g, 31.0 mmol) at 0°C. After stirring at the ambient temperature for 12 h, the formed solution was diluted with CH^Cla (100 mL), washed with iced 5% citric acid (aq). The organic layer was washed with 5% citric acid, 1M NaOH, brine respectively, dried over MgS04, and filtered. The filtrate was evaporated in vacuo to provide 3.55 g (99%) of the desired product as an off-white foam. This product was used for the next reaction as crude without further purification.
'H NMR (CD3OD) 5 1.04 (s, 9H), 1.43 (s, 9H), 1.99-2.03 (m, IH), 2.20-2.30 (m, IH), 3.69 (s, 3H), 3.70-3.79 (m, 2H), 4.28 (b, IH), 4.46 (b, IH), 4.74-4.80 (m, IH); LC-MS (retention time: 1.28 min, method B), MS m/z 359 (M^+H).
Step 4:
A mixture of the product of Step 3 (3.55 g, 9.9 mmol) in THF ( 50 mL), MeOH ( 50 mL) and LiOH monohydrate ( 0.83 g, 19.9 mmol in 50 mL H20) was stirred at the ambient temperature over night. After removal of the volatiles in vacuo, the residue was dissolved in 0.1 M NaOH (100 mL). This aqueous solution was washed with ether (50 mL), acidified by 1M HC1 to pH4. Extracted with EtOAc (100 mL). The organic layer was washed with 5% citric acid and brine, dried over MgSC>4, evaporated to dryness to give 3.20g (95%) of the desired product as a white foam. This product was used as crude without further purification.
'H NMR (CD3OD) 6 1.02 (s, 9H), 1.43 (s, 9H), 2.01-2.09 (m, 1H), 2.25-2.32 (m, 1H), 3.70-3.85 (m, 2H), 4.26-4.30 (m, 1H), 4.46-4.51 (m, 2H), 6.37-6.41 (m, 1H); LC-MS (retention time: 1.14 min, method B), MS m/z 345
Step 5:
To a solution of the product of Step 4 (1.01 g, 2.93 mmol) in DMSO (30 mL) was added potassium te/t-butoxide (1.02 g, 9.08 mmol). The formed solution was stirred at the ambient temperature for 1 h before addition of 7-chloro-3-methyl-5-phenyl-isoxazolo[4,5-b]pyridine (0.75 g, 3.08 mmol). The final solution was stirred for 12 h. Then was quenched with iced water, acidified with 1M HC1 to pH 4, extracted with EtOAc (two 200 mL portions). The organic layers were washed with brine, dried over MgSC>4, filtered, evaporated. The residue was purified by prep-HPLC (60%B— 100%B, 15 min gradient) to afford 305 mg (19%) of the desired product as a pale yellow solid.
'H NMR (CD3OD) 8 1.02 (s, 9H), 1.17 (s, 9H), 2.37-2.47 (m, 1H), 2.64 (s, 3H), 2.85-2.93 (m, 1H), 4.00-4.08 (m, 1H), 4.14 (b, 1H), 4.49-4.55 (m, 1H), 4.62-4.71 (m, 1H), 5.70 (m, 1H), 7.45-7.53 (m, 3H), 7.56 (s, 1H), 8.03-8.06 (m, 2H); LC-MS (retention time: 1.89 min, method B), MS m/z 553
Step 6b:
To a solution of l(R)-tert-butoxycarbony]amino-2(S)-vinyl-cyclopropanecarboxylic acid ethyl ester, the product of Step 6a (3.28 g, 13.2 mmol) in THF (7 mL) and methanol (7 mL) was added a suspension of LiOH (1.27 g, 53.0 mmol) in water (14 mL). The mixture was stirred overnight at room temperature and quenched with IN NaOH (15 mL) and water (20 mL). The resulting mixture was washed with EtOAc (20 mL), and the organic phase was extracted with 20 mL 0.5N NaOH. The combined aqueous phases were acidified with IN HCI until pH 4 and extracted with EtOAc (3 x 40mL). The combined organic extracts were washed with brine and dried (MgSO4) to yield the title compound as a white solid (2.62 g, 87%).
'HNMR: (DMSO-de) 8 1.22-1.26 (m, 1H), 1.37 (s, 9H), 1.50-1.52 (m, 1H), 2.05 (q, J=9 Hz, 1H), 5.04 (d, J=10 Hz, 1H), 5.22 (d, J=17 Hz, 1H), 5.64-5.71 (m, 1H), 7.18, 7.53 (s, NH (rotamers), 12.4 (br s, 1H)); LC-MS (retention time: 1.67 min, method B), MS m/z 228 (M^+H).
Step 7:
A solution of the product of Step 6 (2.62 g, 11.5 mmol) and GDI (2.43 g, 15.0 mmol) in THF (40 mL) was heated at reflux for 50 min under nitrogen. The solution was cooled to room temperature and transferred by cannula to a solution of cyclopropylsulfonamide (1.82 g, 15.0 mmol) in THF (10 mL). To the resulting solution was added DBU (2.40 mL, 16.1 mmol) and stirring was continued for 20 h. The mixture was quenched with IN HC1 to pH 1 and THF was evaporated in vacuo. The suspension was extracted with EtOAc (2 x 50 mL) and the combined organic extracts dried (Na2SO4). Purification by recystallization from hexanes-EtOAc (1:1) afforded the title compound (2.4 g) as a white solid. The mother liquor was purified by a Biotage 40S column (eluted 9% acetone in DCM) to give a second batch of the title compound (1.1 g). Both batches were combined (total yield 92%).
'HNMR: (DMSO-de) 8 0.96-1.10 (m,4H), 1.22 (dd, J=5.5,9.5 Hz, 1H), 1.39 (s, 9H), 1.70 (t, J=5.5 Hz, 1H), 2.19-2.24 (m, 1H), 2.90 (m, 1H), 5.08 (d, J=10 Hz, 1H), 5.23 (d, J=17 Hz, 1H), 5.45 (m, 1H), 6.85, 7.22 (s, NH (rotamers) ; LC-MS (retention time: 1.70 min, method B), MS m/z 331 (M++H).
Step 8:
A solution of the product of Step 7 (3.5 g, 10.6 mmol) in DCM (35 mL) and TFA (32 mL) was stirred at room temperature for 1.5 h. The volatiles were removed in vacuo and the residue suspended in IN HC1 in diethyl ether (20 mL) and concentrated in vacuo. This procedure was repeated once. The resulting mixture was triturated from pentane and filtered to give the title compound as a hygroscopic, off-white solid (2.60 g, 92%).
'H NMR: (DMSO-de) 6 1.01-1.15 (m, 4H), 1.69-1.73 (m, IH), 1.99-2.02 (m, IH), 2.38 (q, J=9 Hz, IH), 2.92-2.97 (m, IH), 5.20 (d, J=ll Hz, IH), 5.33 (d, J=17 Hz, IH), 5.52-5.59 (m, IH), 9.17 (br s, 3H); LC-MS (retention time: 0.24 min, method B), MS m/z 231 (MVH).
Step 9:
To an iced mixture of the product of Step 5 (70 mg, 0.13 mmol), (lfl,2S)-cyclopropanesulfonic acid(l-amino-2-vinyl-cyclopropanecarbonyl)amide hydrochloride, the product of Step 8 (37 mg, 0.14 mmol) and HATU (72 mg, 0.19 mmol) in DCM (2 mL) was added diisopropylethylamine (50 mg, 0.39 mmol). The formed solution was allowed to warm up to the ambient temperature for 12 h and evaporated in vacua. The residue was purified by prep-HPLC (60%B—100%B, 15 min gradient) to afford 52 mg (54%) of Compound 1 as a grayish solid.
'HNMR (CD3OD) S 0.96-1.09 (m, 12H), 1.16-1.25 (m, 10H), 1.44-1.48 (m, IH), 1.87-1.91 (m, IH), 2.20-2.40 (m, 2H), 2.63-2.65 (m, 4H), 2.89-2.98 (m, IH), 4.08-4.20 (m, 2H), 4.44-4.65 (m, 2H), 5.13 (d, 7=11.7 Hz, IH), 5.32 (d, 7=15 Hz, IH), 5.72-5.85 (br 2HY 6.62 (d J=15.0 Hz; IH), 7.46-7.53 (m., 3HY 7.58 (s. 1HY 8.04-8.07 (m, 2H); LC-MS (retention time: 1.92 min, method B), MS m/z 765 (M++H).
Step 1:
A mixture of 2-amino-6-methyIpyridine (1.08 g, 10.0 mmol), ethyl benzoyl acetate (2.30 g, 12.0 mmol) and polyphosphoric acid (6.00 g, 61.2 mmol) was heated to 1 10°C for 5 h. After cooling to the ambient temperature, the mixture was poured into iced water (20 mL) and neutralized to pH 7 with 10 M NaOH. Extracted with CHClj. The organic layer was washed with brine, dried over MgSO4, filtered, evaporated. The residue was purified by flash chromatography (1:1 hexane-EtOAc) to afford 510 mg (22%) of the desired product as a pale yellow solid.
'H NMR (CDC13) 6 3.08 (s, 3H), 6.64 (d, 7=7.0 Hz, 1H), 6.71 (s, 1H), 7.42-7.52 (m,
5H), 8.04-8.06 (m, 2H);
LC-MS (retention time: 1.21 min, method B), MS m/z 237 (M*+H).
Step 2:
A solution of 6-methyl-2-phenyl-pyrido[l,2a]pyrimidin-4-one (489 mg, 2.07 mmol) in melted diphenyl ether (5 mL) was heated to gentle reflux for 5 h. After cooling to the ambient temperature, the formed suspension was diluted with diethyl ether (10 mL), filtered. The cake was washed with diethyl ether thoroughly to afford 450 mg (92%) of the desired product as a brownish solid. LC-MS (retention time: 1.25 min, method B), MS m/z 237
Step 3:
A suspension of 7-methyl-2-phenyl-lH-[l,8]naphthyridin-4-one (450 mg, 1.91 mmol) in POC13 (10 mL) was heated to gentle reflux for 3 h. Evaporated in
vacua. The residue was was poured into iced water (20 mL) and neutralized to pH 10 with 10 M NaOH. Extracted with CHCls. The organic layer was washed with brine, dried over MgS04, filtered, evaporated. The residue was purified by flash chromatography (2:1 hexane-EtOAc) to afford 450 mg (92%) of the desired product as a pink solid.
'H NMR (CD3OD) 8 2.80 (s, 3H), 7.54-7.56 (m, 3H), 7.61 (d, .7=8.4 Hz, 1H), 8.25-
8.30 (m, 3H), 8.58 (d, 7=8.4 Hz, 1H);
LC-MS (retention time: 1.39 min, method B), MS m/z 255, 257
This product was prepared by the same procedure as described in Example 1, Step 5, except using 4-chloro-7-methyl-2-phenyl-[l,8]naphthyridine from Example 2, Step 3 instead.
LC-MS (retention time: 1.55 min, method B), MS m/z 563
Step 5:
Compound 2 was prepared by the same procedure as described in Example 1, Step 9, except using the product of Example 2, Step 4 instead.
'HNMR (CD3OD) 5 1.01-1.10 (m, 12H), 1.21-1.26 (m, 10H), 1.40-1.45 (m, IH), 1.86-1.91 (m, IH), 2.20-2.29 (m, IH), 2.39-2.49 (m, IH), 2.72-2.81 (m, IH), 2.92-2.95 (m, 4H), 4.10-4.16 (m, 2H), 4.55-4.65 (m, 2H), 5.14 (d, 7=12.0 Hz, IH), 5.30 (d, 7=15.0 Hz, IH), 5.67-5.82 (m, 2H), 7.60-7.80 (m, 3H), 7.78 (d, 7=8.6 Hz, IH), 7.87 (s, IH), 8.26-8.29 (m, 2H), 8.95 (d, 7=8.4 Hz, IH); LC-MS (retention time: 1.62 min, method B), MS m/z775 (JvT+H).
(Figure Removed)
Step 1:
To a solution of 4-methoxyphenethyl alcohol (1.52 g, 10.0 mmol) in (50 mL) at 0°C was added Dess-Martin reagent (4.45 g, 10.5 mmol) in one portion. The formed mixture was allowed to warm to the ambient temperature for 1 h. Washed with sat. Na2S20s (aq) and 1M NaOH, brine respectively. Dried over MgSC>4, evaporated in vacuo to give 1.50 g (100%) of the desired aldehyde as a viscous oil. This product was used as crude without any further purification.
Step 2:
A solution of 3,5-diniethyl-4-nitro-isoxazole (142 mg, 1.0 mmol), 4-methoxy-phenylacetaldehyde from Example 3, Step 1 (180 mg, 1.1 mmol) in piperidine (0.1 mL) and ethanol (2 mL) was heated to reflux for 12 h. After cooling down to the ambient temperature, the product precipitated out was collected by filtration. The cake was washed with cold ethanol thoroughly to afford 130 mg (51%) of the desired product as a grayish solid.
'H NMR (CDC13) 8 2.88 (s, 3H), 3.87 (s, 3H), 7.02 (d, 7=8.5 Hz, 2H), 7.50 (d, .7=9.0 Hz, 1H), 7.57 (d, .7=9.0 Hz, 1H), 7.81 (d, 7=8.5 Hz, 2H); LC-MS (retention time: 1.24 min, method B), MS m/z 257 (M++H).
This product was prepared by the same procedure as described in Example 1, Step 2, except using the product of Example 3, Step 2 instead.
'H NMR (fT>ri3) 8 2.70 (ss WY 3.87 (s; 3H), 7.00-7.03 (m; 2H); 7.84 (s, 1H)5 7.96-7.98 (m, 2H); LC-MS (retention time: 1.96 min, method B), MS m/z 275,277 (M++H).
Step 4:
(Figure Removed)
This product was prepared by the same procedure as described in Example 1, Step 5, except using the product of Example 3, Step 3 instead.
'H NMR (CD3OD) 5 1.02 (s, 9H), 1.18 (s, 9H), 2.39-2.43 (m, IH), 2.63 (s, 3H), 2.75-
2.80 (m, IH), 3.87 (s, 3H), 4.00-4.08 (m, IH), 4.17 (b, IH), 4.49-4.55 (m, IH), 4.62-
4.71 (m, IH), 5.68 (b, IH), 7.05 (d, 7=8.5 Hz, 2H), 7.49 (s, IH), 8.00 (d, 7=8.5 Hz,
2H);
LC-MS (retention time: 1.89 min, method B), MS m/z 583 (1VF+H).
Step 5:
Compound 3 was prepared by the same procedure as described in Example 1, Step 9, except using the product of Example 3, Step 4 instead. 'H NMR (CD3OD) 6 1.01-1.09 (m, 12H), 1.17-1.26 (m, 10H), 1.44-1.47 (m, IH), 1.87-1.91 (m, IH), 2.20-2.40 (m, 2H), 2.63-2.65 (m, 4H), 2.89-2.98 (m, IH), 3.87 (s, 3H), 4.08-4.20 (m, 2H), 4.44-4.65 (m, 2H), 5.13 (d, 7=11.7 Hz, IH), 5.32 (d, 7=15.0 Hz, IH), 5.72-5.85 (m, 2H), 7.05 (d, 7=8.5 Hz, 2H), 7.06 (s, IH), 8.01 (d, 7=8.5 Hz, 2H); LC-MS (retention time: 1.96 min, method B), MS m/z 795 (M"+H).
Example 4: Preparation of Compound 4.
Compound 4
(Figure Removed)
This product was prepared by the same procedure as described in Example 3, Step
1&2, except using 4-fluorophenethyl alcohol instead.
LC-MS (retention time: 1.18 min, method B), MS m/z 245 (M++H).
Step 2:
This product was prepared by the same procedure as described in Example 1, Step 2, except using the product of Example 4, Step 1 instead.
'H NMR (CDC13) 6 2.71 (s, 3H), 7.17-7.20 (m, 2H), 7.86 (s, 1H), 8.00-8.02 (m, 2H); LC-MS (retention time: 1.71 min, method B), MS nt/z 263,265 (1VT+H).
Step 3:
This product was prepared by the same procedure as described in Example 1, Step 5,
except using the product of Example 4, Step 2 instead.
LC-MS (retention time: 1.91 min, method B), MS ra/z 571 (M^+H).
Step 4:
Compound 4 was prepared by the same procedure as described in Example 1, Step 9,
except using the product of Example 4, Step 3 instead.
'HNMR (CD3OD) 8 1.01-1.09 (m, 12H), 1.17-1.26 (m, 10H), 1.44-1.47 (m, 1H),
1.87-1.91 (m, 1H), 2.20-2.40 (m, 2H), 2.63-2.65 (m, 4H), 2.89-2.98 (m, 1H), 4.08-
4.20 (m, 2H), 4.44-4.65 (m, 2H), 5.13 (d, 7=11.7 Hz, 1H), 5.32 (d, 7=15.0 Hz, 1H),
5.72-5.85 (m, 2H), 7.20-7.26 (m, 2H), 7.60 (s, 1H), 8.09-8.14 (m, 2H), 9.26 (b, 1H);
LC-MS (retention time: 1.91 min, method B), MS m/z 783 (M*+H).
This: product was prepared by the same procedure as described in Example 3, Step
1&2, except using 3-methoxy-phenethyl alcohol instead.
LC-MS (retention time: 1.03 min, method B), MS m/z 257 (M*+H).
Step 2:
This product was prepared by the same procedure as described in Example 1, Step 2,
except using the product of Example 5, Step 1 instead.
'H NMR (CDC13) 5 2.72 (s, 3H), 3.90 (s, 3H), 7.00-7.02 (m, 1H), 7.41 (t, 7=8.0 Hz,
1H), 7.55 (d, J=7.5 Hz, 1H), 7.59 (d, 7=2.0 Hz, 1H), 7.89 (s, 1H);
LC-MS (retention time: 1.89 min, method B), MS m/z 275,277 (M*+H).
Step 3:
This product was prepared by the same procedure as described in Example 1, Step 5,
except using the product of Example 5, Step 2 instead.
'H NMR (CD3OD) 6 1.02 (s, 9 H), 1.18 (s, 9H), 2.37-2.47 (m, IH), 2.64 (s, 3H),
2.85-2.93 (m, IH), 3.88 (s, 3H), 4.00-4.08 (m, IH), 4.14 (b, IH), 4.49-4.55 (m, IH),
4.62-4.71 (m, IH), 5.71 (b, IH), 7.02-7.04 (m, IH), 7.40 (t, 7=8.0 Hz, IH), 7.58-7.62
(m,3H);
LC-MS (retention time: 1.90 min, method B), MS m/z 583
Step 4:
v^umpuunu J was prcpaicu uy uic sajjjc piuceuuie as ucscnucu in example i, Step 9, except using the product of Example 5, Step 3 instead. 'HNMR (CD3OD) 6 1.01-1.09 (m, 12H), 1.17-1.29 (m, 10H), 1.44-1.47 (m, IH), 1.87-1.91 (m, IH), 2.20-2.40 (m, 2H), 2.63-2.65 (m, 4H), 2.89-2.98 (m, IH), 3.89 (s, 3H), 4.08-4.20 (m, 2H), 4.44-4.65 (m, 2H), 5.13 (d, 7=11.7 Hz, IH), 5.32 (d, 7=15.0 Hz, IH), 5.72-5.85 (m, 2H), 7.02-7.05 (m, IH), 7.41 (t, 7=8.0 Hz, IH), 7.55-7.61 (m, 3H); LC-MS (retention time: 1.96 min, method B), MS m/z 795 (M++H).
Example 6: Preparation of Compound 6.
This product was prepared by the same procedure as described in Example 3, Step 1&2, except using 2-methoxy-phenethyl alcohol instead. LC-MS (retention time: 1.10 min, method B), MS m/z 257 (M++H).
Step 2:
This product was prepared by the same procedure as described in Example 1, Step 2,
except using the product of Example 6, Step 1 instead.
'H NMR (CDC13) 8 2.721 (s, 3H), 3.88 (s, 3H), 7.03 (d, 7=8.0 Hz, IH), 7.11 (t, 7=7.5
Hz, IH), 7.41-7.44 (m, IH), 7.79-7.81 (m, IH), 8.04 (s, IH);
LC-MS (retention time: 1.92 min, method B), MS m/z 275,277 (M++H).
Step 3:
This product was prepared by the same procedure as described in Example 1, Step 5,
except using the product of Example 6, Step 2 instead.
]H NMR (CD3OD) 8 1.02 (s, 9 H), 1.20 (s, 9H), 2.37-2.47 (m, IH), 2.63 (s, 3H),
2.85-2.93 (m, IH), 3.89 (s, 3H), 4.00-4.08 (m, IH), 4.14 (b, IH), 4.49-4.55 (m, IH),
4.62-4.71 (m, IH), 5.56 (b, IH), 7.09 (t, 7=7.5 Hz, IH), 7.15 (d, 7=8.5 Hz, IH), 7.41-
7.44 (m, IH), 7.52 (s, IH), 7.67 (d, J=8.0 Hz, IH);
LC-MS (retention time: 1.76 min, method B), MS m/z 583 (M*~+H).
Step 9, except using the product of Example 6, Step 3 instead.
'HNMR (CD3OD) 8 1.01-1.08 (m, 12H), l.n-1.26 (m, 10H), 1.44-1.47 (m, IH),
1.87-1.91 (m, IH), 2.20-2.40 (m, 2H), 2.63-2.65 (m, 4H), 2.89-2.98 (m, IH), 3.88 (s,
3H), 4.08-4.12 (m, IH), 4.19 (b, IH), 4.44-4.65 (m, 2H), 5.13 (d, 7=11.7 Hz, IH),
5.32 (d, 7=15.0 Hz, IH), 5.59 (b, IH), 5.72-5.80 (m, IH), 7.09 (t, 7=7.5 Hz, IH), 7.15
(d, 7=8.5 Hz, IH), 7.41-7.45 (m, IH), 7.66 (s, IH), 7.66-7.67 (m, IH);
LC-MS (retention time: 1.93 min, method B), MS m/z 795 (M*+H).
Example 7: Preparation of Compound 7.
This product was prepared by the same procedure as described in Example 1, Step 5, except using 2-chloro-quinoline instead. LC-MS (retention time: 1.73 min, method B), MS
Step 2:
Compound 7 was prepared by the same procedure as described in Example 1, Step 9, except using the product of Example 7, Step 1 instead. 'HNMR (CD3OD) 5 1.01-1.08 (m, 12H), l.n-1.26 (m, 10H), 1.44-1.47 (m, IH), 1.87-1.91 (m, IH), 2.23-2.30 (m, 2H), 2.52-2.57 (m, IH), 2.89-2.98 (m, IH), 4.10-4.14 (m, IH), 4.09-4.15 (m, 2H), 4.47-4.51 (m, IH), 5.13 (d, 7=10.0 Hz, IH), 5.32 (d, 7=17.0 Hz, IH), 5.73-5.78 (m, IH), 5.92 (b, IH), 6.90-6.92 (m, IH), 7.42 (t, 7=7.5 Hz, IH), 7.64 (t, 7=7.5 Hz, IH), 7.78-7.82 (m, 2H), 8.13 (d, 7=7.5 Hz, IH), 9.18 (d, IH); LC-MS (retention time: 1.75 min, method B), MS m/z
Example 8: Preparation of Compound 8.
Step 6b through 8, without using Step 6a, an enzymatic resolution step.
LC-MS (retention time: 0.24 min, method B), MS m/z 231 (M^+H). mol) and HATU (3.89 g, 10.2 mmol) in CH2C12 (100 mL) was added diisopropylethylamine (4.41 g, 34.2 mmol). The formed solution was allowed to warm up to the ambient temperature for 12 h. Diluted with EtOAc (200 mL), washed with 5% H3PO4 and brine, dried over MgSO4, filtered, evaporated. The residue was purified by flash chromatography (gradient, 2:1—1:1 hexane-acetone) to yield 1.25 g (41%) of the desired product. 'H NMR (DMSO-d6) 81.00-1.08 (m, 4H), 1.34-1.40 (m, 1:2, 10H), 1.62-1.70 (m, IH), 1.76-1.87 (m, IH), 2.02-2.21 (m, 2H), 2.81-2.95 (m, IH), 3.20-3.45 (m, 2H), 4.04-4.09 (m, IH), 4.26 (b, IH), 5.08-5.12 (m, IH), 5.26 (d, J=17.1 Hz, IH), 5.59-5.69 (m, IH), 8.59,8.87 (rotamers, 1:2, IH), 10.48-11.15 (rotamers, 2:1, IH); LC-MS (retention time: 1.25 min, method B), MS m/e 444 (M++H).
Step 3:
This product was prepared by the same procedure as described in Example 1, Step 8, except using the product of Example 8, Step 2 instead. LC-MS (retention time: 1.02 min, method B), MS m/e 344 (MT^+H).
Step 4:.
To an iced mixture of N-BOC-4-trans-hydroxy-L-proline (1.58 g, 6.83 mmol), cyclopropanesulfonic acid (l-amino-2-vinyl-cyclopropanecarbonyl)-amide hydrochloride (Example 8, Step 3) (2.00 g, 7.52 mmol) and HATU (3.89 g, 10.2 mmol) in GfcfoCh (100 mL) was added diisopropylethylamine (4.41 g, 34.2 mmol). The formed solution was allowed to warm up to the ambient temperature for 12 h. Diluted with EtOAc (200 mL), washed with 5% H3P04 and brine, dried over MgS04, filtered, evaporated. The residue was purified by flash chromatography (gradient, 2:1—1:1 hexane-acetone) to yield 1.25 g (41%) of the desired product. 'H NMR (CD3OD) 8 0.99-1.07 (m, 11H), 1.35-1.44 (m, 13H), 1.75-1.87 (m, IH), 2.09-2.22 (m, 2H), 2.88-2.94 (m, IH), 3.74-3.82 (m, 2H), 4.28-4.30 (m, IH), 4.33-4.38 (m, IH), 4.48 (b, IH), 5.11-5.13 (m, IH), 5.30 (d, 7=15.0 Hz, IH), 5.70-5.78 (m, IH), 6.51-6.6l(m, IH); LC-MS (retention time: 1.26 min, method B), MS m/e 557 (M++H).
tep 5:
To a solution of the product of Example 8, Step 4 (56 mg, 0. 1 mmol) in • DMSO (2 mL) was added potassium tert-butoxide (49 mg, 0.44 mmol). The formed solution was stirred at the ambient temperature for 1 h before addition of 4-chloro-7-methyl-2-trifluoromethyl-[l,8]naphthyridine (P. Ferrarini et al, J Heterocydic Chem, 1983, p!053) (30 mg, 0.12 mmol). The final solution was stirred for 12 h. Quenched with iced water, acidified with 1M HC1 to pH 4, extracted with EtOAc (20 mL, X2). The organic layers were washed with brine, dried over MgSC>4, filtered, evaporated. The residue was purified by prep-HPLC to yield 16 mg (21%) of Compound 8 as a pink solid.
1.76-1.85 (m, IH), 2.18-2.40 (m, 2H), 2.76 (s, 3H), 2.86-2.97 (m, IH), 4.004.11 (m, 2H), 4.48-4.58 (m, 2H), 5.09-5.12 (m, IH), 5.28-5.31 (m, IH), 5.59 (b, IH), 5.69-5.78 (m, IH), 6.39-6.48 (m, IH), 7.58-7.64 (m, 2H), 8.08 (s, IH), 8.64-8.68 (m, IH), 8.85-8.91 (m, IH); LC-MS (retention time: 1.89 min, method B), MS m/e 767 (IvT+H).
Example 9: Preparation of Compound 9.
Compound 9
Compound 9 was prepared by the same procedure as described in Example 8, Step 5, except using 7-chloro-5-ethyl-3-methyl-isoxazolo[4,5-b]pyridine (R. Nesi et al, Synth Comm. 1992,22(16), 2349) instead.
'HNMR (CD3OD) 8 1.01-1.09 (m, IIH), 1.21-1.25 (m, IIH), 1.36 (t, J=7.8 Hz, 3H), 1.38-1.47 (m, 2H), 1.80-1.90 (m, 1H), 2.20-2.31 (m, 2H), 2.59 (s, 3H), 2.90-3.00 (m, 3H), 4.01-4.18 (m,2H), 4.41-4.51 (m, 2H), 5.11-5.15 (m, 1H), 5.27-5.32 (m, 1H), 5.58 (b, 1H), 5.70-5.80 (m, 1H), 7.11 (s, 1H), 7.72,7.98 (1:1, 1H), 9.00,9.22 (1:1, 1H); LC-MS (retention time: 1.75 min, method B), MS m/e 717 (M++H).
Compound 10 was prepared by the same procedure as described in Example 8, Step 5, except using 7-chloro-5-phenyl-3-methyl-isoxazolo[4,5-b]pyridine (Example 1, Step 2) instead.
'HNMR (CD3OD) 5 1.00-1.09 (m, 12H), 1.16-1.25 (m, 10H), 1.44-1.48 (m, 1H), 1.79-1.89 (m, 1H), 2.20-2.40 (m, 2H), 2.64-2.66 (m, 4H), 2.89-2.98 (m, 1H),4.08-4.20 (m, 2H), 4.44-4.55 (m, 2H), 5.11-5.16 (m, 1H), 5.27-5.31 (m, 1H), 5.72-5.74 (m, 2H), 7.20-7.35 (m, 1H), 7.46-7.51 (m, 2H), 7.55-7.68 (m, 1H), 8.05-8.06 (m,2H); LC-MS (retention time: 1.97 min, method B), MS m/z 765 (M*+H).
Example 11: Preparation of Compound 11.
(Figure Removed)
Step 1:
To a solution of 3-methoxy cinnamic acid (11.04 g, 62 mmol) and triethylamine (12.52 g, 124 mmol) in acetone (80 mL) was added ethyl chloroformate (approximately 1.5 equivalents) dropwise at 0°C. After stirring at this temperature for 1 h, aqueous NaN3 (6.40 g, 100 mmol in 35 mL H2O) was added dropwise and the reaction mixture was stirred for 16 h at the ambient temperature. Water (100 mL) was added to the mixture and the volatile was removed in vacuo. The resulting slurry was extracted with toluene (3X50 mL) and the combined organic layers were dried over MgSO/i. This dried solution was added dropwise to a heated solution of diphenylmethane (50 mL) and tributylamine (30 mL) at 190°C. The toluene was distilled off as added. After complete addition, the reaction temperature was raised to 210°C for 2 h. After cooling, the precipitated product was collected by filtration,
washed with hexane (2X50 mL), and dried to yield the desired product as a white solid (5.53 g, 51%) (Nicolas Briet at el, Tetrahedron, 2002, 5761-5766). LC-MS (retention time: 0.82 min, method B), MS m/z 176 (M++H).
Step 2:
6-Methoxy-2//-isoquinolin-l-one (5.0 g, 28.4 mmol) in POC13 (10 mL) was heated
to gentle reflux for 3 h the evaporated in vacua (Nicolas Briet at el, Tetrahedron,
2002, 5761-5766). The residue was poured into iced water (20 mL) and neutralized to
pH 10 with 10 M NaOH. Extracted with CHC13. The organic layer was washed with
brine, dried over MgSC>4, filtered, evaporated. The residue was purified by flash
chromatography (1:1 hexane-EtOAc) to afford 4.41 g (80%) of the desired product as
a white solid.
'H NMR (CD3OD) 8 3.98 (s, 3H), 7.34-7.38 (m, 2 H), 7.69 (d, 7=5.5 Hz, 1H), 8.10
(d, .7=6.0 Hz, 1H), 8.23 (d, 7=9.5 Hz, 1H);
LC-MS (retention time: 1.42 min, method B), MS ni/z 194
Compound 11
Step 3:
To a solution of N-BOC-3-(/0-hydroxy-L-proline (892 mg, 3.89 mmol) in DMSO (40 mL) at the ambient temperature was added potassium tert-butoxide (1.34 g, 12.0 mmol) in one portion. The formed suspension was stirred at this temperature for 30 min before being cooled to 10°C. l-chloro-6-methoxy-isoquinoline (example 11, Step 2) (785 mg, 4.05 mmol) was added as solid in one portion and the final mixture was stirred at the ambient temperature for 12 h. Quenched with iced 5% citric acid (aq), extracted with EtOAC (100 mL). The aqueous phase was extracted with EtOAC again. The combined organic layers were washed with 5% citric acid (aq) and brine respectively, dried over MgSO-t, filtered. The filtrate was evaporated in vacuo to dryness to yield 1.49 g (99%) of the desired product as an off-white foam. This material was used in the next step reaction as crude without further purification.
'HNMR (CD3OD) 5 1.42,1.44 (rotamers, 9H), 2.38-2.43 (m, IH), 2.66-2.72 (m, IH), 3.80-3.87 (m, 2H), 3.92 (s, 3H), 4.44-4.52 (m, IH), 5.73 (b, IH), 7.16-7.18 (m, 2H), 7.24-7.25 (m, IH), 7.87-7.88 (m, IH), 8.07 (d, 7=8.5 Hz, IH); LC-MS (retention time: 1.62 min, method B), MS m/z 389 (IVT+H).
Step 4:
To a mixture of the product of Example 11, Step 3 (1.49 g, 3.84 mmol), HATU (2.19 g, 5.76 mmol), and cyclopropanesulfonic acid (l-(R)-amino-2-(S)-vinyl-cyclopropanecarbonyl)-amide HCI salt (Example 1, Step 8) (1.12 g, 4.22 mmol) in CH2C12 (50 mL) was added DIPEA (1.29 g, 11.5 mmol) at 0°C. After stirring at the ambient temperature for 12 h, the formed solution was diluted with CH2C12 (50 mL), washed with iced 5% citric acid (aq). The organic layer was washed with 5% citric acid (aq) and brine respectively, dried over MgSCU, and filtered. The filtrate was evaporated in vacuo to dryness. The residue was recrystallized from rnethanol to yield 1.60 g (70%) of the desired product as a white solid. 'HNMR (CD3OD) 8 1.05-1.08 (m, 2H), 1.16-1.20 (m, IH), 1.24-1.27 (m, IH), 1.42-1.45 (m, 10H), 1.88 (dd, 7=8.09, 5.34 Hz, IH), 2.24-2.30 (m, 2H), 2.53-2.57 (m, IH), 2.94-2.98 (m, IH), 3.80 (d, 7=12.5 Hz, IH), 3.86-3.89 (m, IH), 3.93 (s, 3H), 4.40-4.42 (m, IH), 5.13 (d, 7=10.5 Hz, IH), 5.32 (d, 7=18.0 Hz, IH), 5.72-5.81 (m, 2H), 7.17-7.20 (m, 2 H), 7.26 (d, 7=6.0 Hz, IH), 7.88 (d, 7=6.0 Hz, IH), 8.07 (d, 7=9.0 Hz, IH); LC-MS (retention time: 1.74 min, method B), MS m/z 601 (M^+H).
Step 5:
To an iced solution of the product of Example 11, Step 4 (1.50 g, 2.50 mmol) in CH2C12 (10 mL) was added TFA (10 mL). The formed solution was allowed to warm to the ambient temperature for 2 h. The solvent was removed in vacuo. The residue was triturated with IM HCI in ether. Filtered, washed with ether to yield 1.43 g (99.8%) of the desired product as a hygroscopic white solid. 'HNMR (CD3OD) 5 1.03-1.208 (m, 4H), 1.26-1.31 (m, IH), 1.37-1.40 (m, IH), 1.95-1.97 (m, IH), 2.32-2.37 (m, IH), 2.42-2.48 (m, IH), 2.95-2.99 (m, IH), 3.88 (d, 7=12.5 Hz, 2H), 3.98 (s, 3H), 4.40-4.42 (m, IH), 5.16 (d, 7=10.5 Hz, IH), 5.33 (d,
7=18.0 Hz, IH), 5.62-5.69 (m, IH), 5.97 (b, IH), 7.30-7.34 (m, 2H), 7.47 (d, 7=6.0 Hz, IH), 7.90 (d, 7=6.5 Hz, IH), 8.34 (d, 7=9.0 Hz, IH), 9.14 (b, IH); LC-MS (retention time: 1.12 min, method B), MS m/z 501 (M^+H).
Step 6:
To a mixture of the product of Example 11, Step 5 (1.49 g, 3.84 mmol), HATU (2.19 g, 5.76 mmol), and N-BOC-t-butyl-L-glycine (1.12 g, 4.22 mmol) in CH2C12 (50 mL) was added DIPEA (1.29 g, 11.5 mmol) at 0°C. After stirring at the ambient temperature for 12 h, the formed solution was diluted with CH?Cl2 (50 mL), washed with iced 5% citric acid (aq). The organic layer was washed with 5% citric acid (aq) and brine respectively, dried over MgSC>4, and filtered. The filtrate was evaporated in vacuo to dryness. The residue was purified by prep-HPLC (40%B to 100%B, 15 min gradient time) to yield 1.60 g (70%) of Compound 11 as a white solid.
'HNMR (CD3OD) 8 1.00-1.08 (m, 12H), 1.23-1.25 (m, IH), 1.27 (s, 9H), 1.40-1.45 (m, IH), 1.85-1.88 (m, IH), 2.20-2.30 (m, 2H), 2.55-2.61 (m, IH), 2.91-2.97 (m, IH), 3.92 (s, 3H), 4.02-4.06 (m, IH), 4.21-4.24 (m, IH), 4.40-4.42 (m, IH), 4.49-4.51 (rn, IH), 5.12 (d, 7=10.5 Hz, IH), 5.28 (d, 7r-lS.O Hz, IH), 5.69-5.74 (m, iH), 5.81 (b, IH), 6.60 (d, 7=10.0 Hz, IH), 7.08-7.10 (m, IH), 7.18 (s, IH), 7.25 (d, 7=6.0 Hz, IH ), 7.88 (d, 7=6.0 Hz, IH), 8.09 (d, 7=9.0 Hz, IH); LC-MS (retention time: 1.75 min, method B), MS m/z 714 (M++H); Anal. Calcd for Css^NsOpS-O.S H20: C, 58.16; H, 6.69; N, 9.69, Found: C, 58.01; H, 6.46; N, 9.55.
Step 7:
To a solution of Compound 11 (71 mg, 0.1 mmol) in CH2Cl2 (5 mJL) at-78 °C was
added 1M HCI in ether (0.2 mL, 0.2 mmol). After stirring at this temperature for 10
min, the volatile was removed in vacuo without heating bath. The residue was
triturated with ether, filtered, washed with ether and dried to yield 61 mg (85%) of
the desired HCI salt of Compound 11 as a very fine solid.
'HNMR (CD3OD) 6 1.00-1.08 (m, 12H), 1.19 (s, 9H), 1.23-1.25 (m, 1 H), 1.40-1.45
(m, IH), 1.85-1.91 (m, IH), 2.20-2.26 (m, IH), 2.31-2.42 (m, 1 H), 2.65-2.78 (m,
IH), 2.92-2.97 (m, IH), 4.00 (s, 3H), 4.10-4.16 (m, 2H), 4.51-4.64 (m, 2H), 5.13 (d,
7=10.5 Hz, IH), 5.30 (d, 7=18 Hz, IH), 5.69-5.79 (m, IH), 5.84 (b, IH), 7.28 (d,
7=9.3 Hz, IH), 7.40 (s, IH), 7.55 (d, 7=6.3 Hz, IH), 7.89-7.92 (m, IH), 8.29 (d,
7=9.0 Hz, IH), 9.21 (b, 1 H);
LC-MS (retention time: 1.75 min, method B), MS m/z 714 (IvT+H).
Anal. Calcd for C35H47N5O9S»1.0 HCI: C, 56.02; H, 6.44; N, 9.33; Cl, 4.72: S, 4.27.
Found: C, 55.80; H, 6.42; N, 9.15; Cl, 4.56: S, 4.09.
Step 8:
To a 25 ml 2 neck flask was added a stir bar, septa and N2 gas adapter. Compound 11 (99.7 mg, 0.140 mmol) was weighed out and added to the reaction flask. The reaction flask was purged and placed under a N2 atmosphere. 850 ul of acetone was added to the flask to provide a clear solution. To this solution at room temperature was added 780 ul of a .179 M solution of KOH (aq.) prepared by the dissolution of solid KOH (502.8 mg, 8.97 mmol) in 50 ml of H2O. The solution warmed slightly upon addition of the KOH but remained clear. The clear solution was allowed to stir at RT for 2 hours. The product crystallized out of solution and was isolated by filtration. The cake was washed with cold acetone to afford 42 mg (40% yield) of the desired product as fine white needles: 'H NMR (DMSO) 8 0.68 (m, IH), 0.72 (m, IH), 0.88 (s, IH), 0.92 (s, IH), 1.24 (s, IH), 1.38 (s, IH), 1.50 (b, IH), 1.81 (b, IH), 2.68 (b, 2H), 3.90 (s, 3H), 3.95-4.10 (m, 3H), 4.40 (t, J = lOHz, IH), 4.85 (m, IH), 5.04 (m, IH), 5.71 (b, IH), 6.01 (b, IH), 6.64 (d, J = lOHz, IH), 7.10 (m, IH), 7.30 (m, J = 5Hz, 2H), 7.95 (d, J = 10 Hz, IH), 8.08 (d, J = 15 Hz, IH). Elemental analysis for C35H46KN5O9S«H2O; calc. C, 54.60; H, 6.28; K, 5.08; N, 9.10 actual C, 54.88; H, 6.23; K, 5.05; N, 9.01; MS m/e 714 (MH+);
Compound 12 was prepared by the same procedure as described in Example 11, Step 6, except using N-BOC-L-valine instead.
'H NMR (CD3OD) 5 0.94-0.98 (m, 6H), 1.07-1.09 (m, 3H), 1.21-1.25 (m, 10H), 1.40-1.43 (m, IH), 1.88-1.89 (m, IH), 2.05-2.09 (m, IH), 2.22-2.35 (m, 2H), 2.57-2.61 (m, IH), 2.94-2.97 (m,.lH), 3.92 (s, 3H), 4.03-4.06 (m, 2H), 4.47-4.55 (m, 2H), 5.12 (d, 7=10.5 Hz, IH), 5.32 (d, 7=18.1 Hz, IH), 5.74-5.81 (m, IH), 5.86 (b, IH), 7.10 (d, 7=9.0 Hz, IH), 7.18 (s, IH), 7.25 (d, 7=6.0 Hz, IH ), 7.88 (d, 7=6.0 Hz, IH), 8. 10 (d, 7=9.0 Hz, IH); T.C-MS (retention time: 1 .71 min. method R). MS m/7 700 (MVH).
(Figure Removed)
Compound 13 was prepared by the same procedure as described in Example 11, Step 6, except using N-BOC-L-alloisoleucine instead.
'H NMR (CD3OD) 8 0.89-0.96 (m, 6H), 1.07-1.18 (m, 5H), 1.28 (s, 9H), 1.42-1.45 (m, IH), 1.50-1.54 (m, IH), 1.87-1.89 (m, 2H), 2.23-2.34 (m, 2H), 2.57-2.61 (m,
IH), 2.92-2.95 (m, IH), 3.92 (s, 3H), 4.05-4.07 (m, IH), 4.22-4.24 (m, IH), 4.37-4.40 (m, IH), 4.54-4.56 (m, IH), 5.13 (d, 7=10.5 Hz, IH), 5.32 (d, 7=18.0 Hz, IH), 5.75-5.82 (m, IH), 5.86 (b, IH), 7.12 (d, 7=9.0 Hz, IH), 7.19 (s, IH), 7.24 (d, 7=6.0 Hz, IH), 7.88 (d, 7=6.0 Hz, IH), 8.10 (d, 7=9.0 Hz, IH); LC-MS (retention time: 1.77 min, method B), MS m/z 714 (IvT+H).
(Figure Removed)
A mixture of Compound 11 (150 mg, 0.21 mmol) and Pearlmann's catalyst (Pd(OH)a, 15 mg) in EtOAc (10 mL) was placed on Parr shaker for 20 min under 10 psi H2. Filtered through celite. The filtrate was evaporated in vacuo. The residue was purified by prep-HPLC to provide 67 mg (45%) of Compound 14 as a white solid. 'H NMR (CD3OD) 5 0.96-0.99 (m, 4H), 1.04 (s, 9H), 1.07-1.09 (m, 2H), 1.21-1.24 (m,2H), 1.27 (s, 9H), 1.51-1.65 (m,4H), 2.25-2.27 (m, IH), 2.55-2.61 (m, IH), 2.94-2.98 (m, IH), 3.92 (s, 3H), 4.02-4.06 (m, IH), 4.21-4.24 (m, IH), 4.40-4.42 (m, IH), 4.49-4.51 (m, 1H),5.81 (b, IH), 6.59 (d, 7=10.0 Hz, IH), 7.08-7.10 (m, IH), 7.18 (d,
.7=1.5 Hz, IH), 7.24 (d, 7=6.0 Hz, IH ), 7.88 (d, 7=6.0 Hz, IH), 8.08 (d, 7=9.0 Hz,
IH);
LC-MS (retention time: 1.76 min, method B), MS m/z 716 (M++H).
Compound 15 was isolated form the same reaction of making Compound 14 with a slightly longer retention time as a by-product in 15% yield. 'HNMR (CD3OD) 60.92-l.10 (m, 17H), 1.26-1.36 (m, 13H), 1.64-1.72 (m, IH), 1.90-1.96 (m, IH), 2.30-2.40 (m, IH), 2.63-2.67 (m, IH), 2.96-3.00 (m, IH), 3.92 (s, -W\ 4.m-4.m(m im 424^. !HY 4. 40-4.42 Cm. 1HY 4.49-4.51 fm. im. 5.83 Hx IH), 7.08-7.11 (m, IH), 7.19 (d, J=2.0 Hz, IH), 7.25 (d, 7=6.0 Hz, IH), 7.89 (d, 7=6.0 Hz, IH), 8.10 (d, 7=9.0 Hz, IH), 8.51 (b, IH); LC-MS (retention time: 1.83 min, method B), MS m/z 718 (M++H).
To a solution of Compound 11 (420 mg, 0.59 mmol) in DCM (5 mL) at 0°C was added TFA (5 rnL). After stirring at this temperature for 2 h, the volatile was removed in vacuo. The residue was triturated with 1M HCI in ether( 5 mL), filtered, washed with ether and dried to yield 360 mg (89%) of the desired HCI salt as a very fine solid. LC-MS (retention time: 1.28 min, method B), MS m/z 614 (M++H).
Step 2:
To a suspension of the product of Example 16, Step 1 (39 mg, 0.06 mmol), and DIPEA (20 mg, 0.18 mmol) in DCM (1 mL) at 0°C was added methyl chloroformate (6.8 mg, 0.072 mmol). After stirring at this temperature for 2 h, the volatile was removed in vacuo. The residue was purified by prep-HPLC to give 21 mg (58 %) of Compound 16 as a white crystal.
'HNMR (CD3OD) 5 1.05-1.09 (m, 11H), 1.22-1.25 (m, 2H), 1.41-1.44 (m, 1H), 1.86-1.89 (m, 1H), 2.22-2.32 (m, 2H), 2.59-2.63 (m, 1H), 2.89-2.93 (m, 1H), 3.48 (s, 3H), 3.92 (s, 3H), 4.06-4.10 (m, 1H), 4.31-4.33 (m, 1H), 4.38-4.40 (m, 1H), 4.50-4.52 (m, 1H), 5.12 (d, 7=10.5 Hz, 1H), 5.30 (d, 7=18.0 Hz, 1H), 5.71-5.80 (m, 1H),
5.85 (b, IH), 6.95 (d, 7=10.0 Hz, IH), 7.13-7.16 (m, IH), 7.19 (s, IH), 7.25 (d, 7=6.0
Hz, IH), 7.88 (d, 7=6.0 Hz, IH), 8.09 (d, 7=9.0 Hz, IH);
LC-MS (retention time: 1.54 min, method B), MS m/z 672 (M^+H).
Compound 17 was prepared by the same procedure as described in Example 16, Step 2, except using isopropyl chloroformate instead.
'HNMR (CD3OD) S 1.00-1.09 (m, 15H), 1.13-1.16 (m, 2H), 1.24-1.26 (m, 2H), 1.40-1.45 (m, IH), 1.86-1.89 (m, IH), 2.21-2.31 (m, 2H), 2.55-2.61 (m, IH), 2.91-2 97 Cm. 1HV 3.92 (s. 3HV 4.04-4.08 Cm, IH). 4,30 fb.. 1HY 4.40 Cd,7=10 Hz, IH), 4.49-4.54 (m, 2H), 5.12 (d, 7=10.5 Hz, IH), 5.29 (d, 7=l8.U Hz, IH), 5.71-5.77 (m, IH), 5.84 (b, IH), 6.80 (d, 7=10.0 Hz, IH), 7.11 (d, 7=9.0 Hz, 1 H), 7.19 (s, IH), 7.25 (d, 7=6.0 Hz, IH), 7.88 (d, 7=6.0 Hz, IH), 8.08 (d, 7=9.0 Hz, IH); LC-MS (retention time: 1.74 min, method B), MS m/z 700 (M++H).
Example 18: Preparation of Compound 18.
Compound 18 was prepared by the same procedure as described in Example 16, Step
2, except using neopentyl chloroformate instead.
'H NMR (CD3OD) 5 0.61 (b, IH), 0.84 (s, 8H), 1.05-1.09 (m, 11H), 1.23-1.25 (m,
2H), 1.39-1.44 (m, IH), 1.85-1.88 (m, IH), 2.20-2.30 (m, 2H), 2.56-2.62(m, IH),
2.91-2.97 (m, IH), 3.38 (d, 7=9.0 Hz, IH), 3.55 (d, J=9.0 Hz, IH), 3.92 (s, 3H), 4.02-
4.06 (m, IH), 4.32 (d, J=9.5 Hz, IH), 4.41 (d, 7=9.0 Hz, IH), 4.49-4.51 (m, IH), 5.12
(d, 7=10.5 Hz, IH), 5.28 (d, 7=18.0 Hz, IH), 5.69-5.74 (m, IH), 5.81 (b, IH), 6.90 (d,
7=10.0 Hz, IH), 7.08-7.10 (m, 1 H), 7.19 (s, IH), 7.26 (d, 7=6.0 Hz, IH), 7.88 (d,
7=6.0 Hz, IH), 8.07 (d, 7=9.0 Hz, IH);
LC-MS (retention time: 1.84 min, method B), MS m/z 728 (IVT+H).
Compound 19 was prepared by the same procedure as described in Example 16, Step 2, except using (S)-3-furanochloroformate (J. Campbell, A. Good, WO 20020808) instead.
'H NMR (CD3OD) 6 1.03-1.08 (m, 11H), 1.23-1.26 (m, 2H), 1.38-1.46 (m, IH), 1.64-1.71 (m, IH), 1.85-1.90 (m, 2H), 2.20-2.30 (m, 2H), 2.55-2.61 (m, IH), 2.91-2.97 (m, IH), 3.66-3.72 (m, 4H), 3.93 (s, 3H), 4.05-4.09 (m, IH), 4.27-4.29 (m, IH), 4.40-4.42 (m, IH), 4.55-4.59 (m, IH), 4.75-4.77 (m, IH), 5.12 (d, 7=10.5 Hz, IH), 5.28 (d, 7=18 Hz, IH), 5.73-5.80 (m, IH), 5.85 (b, IH), 7.06 (d, 7=10.0 Hz, IH), 7.13 (d, 7=9.0 Hz, IH), 7.20 (s, IH), 7.25 (d, 7=6.0 Hz, IH), 7.89 (d, 7=6.0 Hz, IH), 8.07 (d, 7=9.0 Hz, IH); LC-MS (retention time: 1.52 min, method B), MS m/z 728 (IVT+H).
(Figure Removed)
This product was prepared by the same procedure as described in Example 11, Step 2,
except using 6-chloro-2H-isoquinolin-l-one ((Nicolas Briet at el, Tetrahedron, 2002,5761 -5766) instead. IT-MS /YetenHrm time.- ! 07 min. method BY MS m/7 180
This product was prepared by the same procedure as described in Example 1, Step 5, except using the product of Example 20, Step 1 instead.
'H NMR (CD3OD) 6 1.04 (s, 9H), 1.20 (s, 9H), 2.36-2.41 (m, 1H), 2.74-2.78 (m, 1H), 4.01-4.04 (m, 1H), 4.19-4.21 (m, 1H), 4.47-4.49 (m, 1H), 4.67-4.70 (m, 1H), 5.84 (b, 1H), 7.28 (d, /=6.0 Hz, 1H), 7.47 (d, .7=6.0 Hz, 1H), 7.84 (s, 1H), 8.00 (d, y=6.0 Hz, 1H), 8.20 (d, J=9.0 Hz, 1H);
LC-MS (retention time: 1.88 min, method B), MS m/z 506 (M++H).
Step 3:
Compound 20 was prepared by the same procedure as described in Example 1, Step 9, except using the product of Example 20, Step 2 instead. 'HNMR (CD3OD) S 0.99-1.11 (m, 12H), 1.20-1.26 (m, 10H), 1.43-1.46 (m, IH), 1.87-1.90 (m, IH), 2.22-2.31 (m, 2H), 2.60-2.64 (m, IH), 2.92-2.97 (m, IH), 4.06-4.08 (m, IH), 4.21-4.23 (m, IH), 4.45-4.47 (m, IH), 4.53-4.56 (m, IH), 5.13 (d, 7=10.5 Hz, IH), 5.29 (d, 7=18.0 Hz, IH), 5.72-5.80 (m, IH), 5.88 (b, IH), 6.58 (d, 7=10.0 Hz, IH), 7.29(d, 7=6.0 Hz, 1 H), 7.47 (d, 7=9.0 Hz, IH), 7.86 (s, IH), 8.01 (d, 7=6.0 Hz, IH), 8.18 (d, 7=9.0 Hz, IH); LC-MS (retention time: 1.94 min, method B), MS m/z 718
Example 21: Preparation of Compound 21.
Step 1:
To a mixture of the product of Example 1, Step 4 (3.00 g, 8.72 mmol), HATU (4.97 g, 13.1 mmol), and product of Example 1, Step 8 (2.55 g, 9.59 mmol) in CH2C12 (100 rnL) was added DIPEA (3.02 g, 27.0 mmol) at 0°C. After stirring at the
ambient temperature for 12 h, the formed solution was diluted with CH2C12 (100 mL), washed with iced 5% citric acid (aq). The organic layer was washed with 5% citric acid (aq) and brine respectively, dried over MgSCU, and filtered. The filtrate was evaporated in vacuo to dryness. The residue was purified by flash column (1:1 hexane:acetone) to yield 3.64 g (75%) of the desired product as a foam.
LC-MS (retention time: 1.41 min, method B), MS m/z 557 dvT+H).
To an iced solution of 6-bromoisoquinoline (4.16 g, 20 mmol) in CHzClz (100 mL) was added mCPBA (9.38 g, 77% pure, 42 mmol) as solid in one portion. After stirring at the ambient temperature for 12 h, diluted with CJ^Cb (100 mL) and washed with 1M NaOH (100 mL, X2) and brine. The organic layer was dried over MgSO*, filtered, evaporated to dryness to yield 3.83 g (86%) of the desired product as a white solid. This material was used as crude without further purification. LC-MS (retention time: 0.77min, method B), MS m/z 224,226(Ivr+H).
Step 3:
A mixture of 6-bromo-isoquinoline 2-oxide (88 mg, 0.2 mmol), pyrazole (68 mg, 1.0 mmol), CuBr (57 mg, 0.4 mmol) and cesium carbonate (130 mg, 0.4 mmol) in DMF (2 mL) was heated to 140°C for 4 h in a sealed tube. After filtration, the
filtrated was purified by prep-HPLC to yield 41 mg (98%) of the desired product as
an off-white solid.
'H NMR (CDC13) 5 6.58-6.59 (m, IH), 7.82 (d, .7=1.0 Hz, IH), 7.89 (d, 7=7.0 Hz,
IH), 8.02 (d, 7=9.0 Hz, IH), 8.11 (d, 7=2.5 Hz, IH), 8.18-8.22 (m, 2H), 8.29 (d,
7=7.0 Hz, IH), 9.07 (b, IH);
LC-MS (retention time: 0.77 min, method B), MS m/z 212 (M*+H).
Step 4:
This product was prepared by the same procedure as described in Example 11, Step 2 as an off- white solid, except using 6-pyrazol-isoquinoline 2-oxide instead. !H NMR (CD3OD) 8 7.82-7.83 (m, 2H), 8.23-8.32 (m, 4H), 8.44-8.49 (m, 2H); LC-MS (retention time: 1.35 min, method B), MS m/z 230, (IvT+H).
Step 5:
To a solution of product of Example 21, Step 1 (45 mg, 0.08 mmol) in DMSO (2 mL) was added potassium tert-butoxide (41 mg, 0.37 mmol). The formed solution was stirred at the ambient temperature for 30 min before addition of l-chloro-6-pyrazol-l-yl-isoquinoline(17 mg, 0.07 mmol). The final solution was stirred for 12 h. Quenched with iced water, acidified with 1M HC1 to pH4, extracted with EtOAc (20 mL, X2). The organic layers were washed with brine, dried over MgSCX filtered, evaporated. The residue was purified by prep-HPLC to yield 10 mg (16%) of Compound 21 as a pink solid.
'H NMR (CD3OD) 61.04-1.10 (m, 12H), 1.23-1.27 (m, 10H), 1.43-1.47 (m, IH), 1.87-1.91 (m, IH), 2.22-2.29 (m, 2H), 2.61-2.68 (m, IH), 2.92-2.98 (m, IH), 4.07-4.11 (m, IH), 4.24 (b, IH), 4.46-4.60 (m, 2H), 5.13 (d, 7=10.5 Hz, IH), 5.29 (d, 7=18 Hz, IH), 5.70-5.83 (m, IH), 5.89 (b, IH), 6.59-6.61 (m, IH), 7.40 (d, 7=10.0 Hz, IH), 7.80 (d, 7=2.5 Hz, IH), 8.01 (d, 7=10.0 Hz, 2H), 8.15 (s, IH), 8.31 (d, 7=15.0 Hz, IH), 8.42 (d, 7=4.5 Hz, IH); LC-MS (retention time: 1.77 min, method B), MS m/z 750
Example 22: Preparation of Compound 22.
This product was prepared by the same procedure as described in Example 11, Step 2
as an off- white solid, except using 6-bromo-isoquinoline 2-oxide instead.
'HNMR (CD3OD) 6 7.73 (d, y=5.5 Hz, IH), 7.85-7.91 (m, IH), 8.22-8.31 (m, 3H);
LC-MS (retention time: 1.53 min, method B), MS m/z 241, 243, 245 (M++H).
Step 2:
Comnonnd 22 was nrenared hv the same nrocedure as described in Fxamnle 21 . Sten
5 as a white solid, except using l-chloro-6-bromo-isoquinoline instead.
'H NMR (CD3OD) 5 0.99-1.09 (m, 12H), 1.22-1.27 (m, 10H), 1.40-1.47 (m, IH),
1.86-1.91 (m, IH), 2.20-2.34 (m, 2H), 2.57-2.66 (m, IH), 2.90-2.97 (m, IH), 4.05-
4.09 (m, IH), 4.21 (b IH), 4.44-4.57 (m, 2H), 5.13 (d, 7=10.5 Hz, IH), 5.29 (d,
7=18.0 Hz, IH), 5.70-5.82 (m, IH), 5.88 (b, IH), 7.29 (d, 7=9.5 Hz, IH), 7.60-7.63
(m, IH), 8.00-8.12 (m, 3H);
LC-MS (retention time: 1.90 min, method B), MS m/z 762, 764 (M*+H).
Example 23: Preparation of Compound 23.
Step 1:
This product was prepared by the same procedure as described in Example 11, Step 3
as a white solid, except using 1-chloro-isoquinoline instead.
'H NMR (CD3OD) 5 1.42,1.44 (rotamers, 9H), 2.39-2.44 (m, IH), 2.68-2.72 (m,
IH), 3.80-3.87 (m, 2H), 4.44-4.52 (m, IH), 5.78 (b, IH), 7.32-7.33 (m, IH), 7.58 (t,
7=7.8 Hz, IH),), 7.71 (t, 7=7.5 Hz, IH), 7.81 (d, 7=8.0 Hz, IH), 7.95 (d, 7=6.0 Hz,
IH), 8.19 (d, 7=8.0 Hz, IH);
LC-MS (retention time: 1.61 min, method B), MS m/z 359 (M++H).
Step 2:
This product was prepared by the same procedure as described in Example 11, Step 4, except using the product of Example 23, Step 1 instead.
'H NMR (DMSO-d6) 6 1.00-1.09 (m, 4H), 1.35-1.38 (m, 10H), 1.69-1.84 (m, IH), 2.11-2.66 (m, 3H), 2.89-2.93 (m, IH), 3.62-3.89 (m, 2H), 4.31 (t, 7=8.1 Hz, IH), 5.12 (d, 7=10.8 Hz, IH), 5.27 (d, 7=16.8 Hz, IH), 5.58-5.70 (m, IH), 5.76 (b, IH), 7.43 (d, 7=5.7 Hz, IH), 7.66 (t, 7=7.4 Hz, IH), 7.79 (t, 7=7.5 Hz, IH), 7.92 (d, 7=8.1 Hz, IH), 8.02 (d, 7=10.0 Hz, IH), 8.13 (d, 7=8.1 Hz, IH), 9.02 (b, IH); LC-MS (retention time: 1.72 min, method B), MS m/z 571 (M^+H).
Step 3:
This product was prepared by the same procedure as described in Example 11, Step 5, except using the product of Example 23, Step 2 instead. LC-MS (retention time: 1.16 min, method B), MS m/z 471 (M*+H).
Step 4:
Compound 23 was prepared by the same procedure as described in Example 11, Step 6 as a white solid, except using the product of Example 23, Step 3 instead. 'H NMR (CD3OD) d 1.00-1.09 (m, 12H), 1.25-1.27 (m, 10H), 1.42-1.46 (m, IH), 1.86-1.90 (m, IH), 2.22-2.34 (m, 2H), 2.60-2.67 (m, IH), 2.92-2.99 (m, IH), 4.06-4.11 (m, IH), 4.26 (b, IH), 4.45-4.57 (m, 2H), 5.12 (d, 7=10.2 Hz, IH), 5.27 (d, 7=16.8 Hz, IH), 5.70-5.82 (m, IH), 5.88 (b, IH), 7.32 (d, 7=6.0 Hz, IH), 7.52 (t, 7=7.4 Hz, IH), 7.70 (t, 7=7.5 Hz, IH), 7.80 (d, 7=8.1 Hz, IH), 7.97 (d, 7=6 Hz, IH), 8.20 (d, 7=8.4 Hz, IH), 9.18 (b, IH); LC-MS (retention time: 1.80 min, method B), MS m/z 684
Example 24: Preparation of Compound 24.
To a solution of N-BOC-3-(tf)-hydroxy-L-proline (6.22 g, 26.9 mmol) in DMF (250 mL) at 0°C was added NaH (60%, 3.23 g, 80.8 mmol) by several portions. The formed suspension was stirred at this temperature for 30 min. 1,3-dichloro-isoquinoline (5.33 g, 26.9 mmol) was added as solid in one portion and the final mixture was stirred at the ambient temperature for 12 h. Quenched with iced 5% citric acid (aq), extracted with EtOAC (300 mL). The aqueous phase was extracted with EtOAC again. The combined organic layers were washed with 5% citric acid (aq) and brine respectively, dried over MgSO4, filtered. The filtrate was evaporated in vacuo to dryness to yield 10.53 g (99.8%) of 4-(6-methoxy-isoquinolin-l-yloxy)-pyrrolidine-l,2-dicarboxylic acid 1-tert-butyl ester as an off-white foam. This material was used in the next step reaction as crude without further purification. 'H NMR (CD3OD) 5 1.43,1.44 (rotamers, 9H), 2.39-2.44 (m, 1H), 2.68-2.72 (m, 1H), 3.80-3.90 (m, 2H), 4.44-4.52 (m, 1H), 5.77 (b, 1H), 7.39 (s, 1H), 7.58 (t, J=7.3 Hz, 1H), 7.71-7.78 (m, 2H), 8.16 (d, J=7.5 Hz, 1H); LC-MS (retention time: 1.80 min, method B), MS m/z 392 (Ivf+H).
Step 2:
This product was prepared by the same procedure as described in Example 11, Step 4, except using the product of Example 24, Step 1 instead. 'H NMR (CD3OD) 8 1.02-1.08 (m, 2H), 1.18-1.26 (m, 2H), 1.44-1.48 (m, 10H), 1.84-1.91 (m, IH), 2.22-2.36 (m, 2H), 2.57-2.60 (m, IH), 2.95-2.99 (m, IH), 3.81-3.93 .(m, 2H), 4.384.41 (m, IH), 5.13 (d, J=10.8 Hz, IH), 5.31 (d, J=16.8 Hz, IH), 5.75-5.82 (m, 2H), 7.41 (s, IH), 7.59 (t, 7=7.4 Hz, IH), 7.74-7.79 (m, 2H), 8.16 (d, 7=8.0 Hz, IH); LC-MS (retention time: 1.82 min, method B), MS m/z 605 (Jv/F+H).
Step 3:
This product was prepared by the same procedure as described in Example 11, Step
5, except using the product of Example 24, Step 2 instead.
(Figure Removed)
LC-MS (retention time: 1.30 min, method B), MS m/z 505 (M++H).
Step 4:
Compound 24 was prepared by the same procedure as described in Example 11, Step 6 as a white solid, except using the product of Example 24, Step 3 instead. 'H NMR (CD3OD) 5 0.99-1.09 (m, 12H), 1.22-1.29 (m, 10H), 1.42-1.46 (m, IH), 1.86-1.90 (m, IH), 2.21-2.34 (m, 2H), 2.62-2.66 (m, IH), 2.92-2.99 (m, IH), 4.06-4.11 (m, IH), 4.26 (b, IH), 4.46-4.56 (m, 2H), 5.13 (d, 7=10.5 Hz, IH), 5.29 (d, 7=17.2 Hz, IH), 5.72-5.79 (m, IH), 5.89 (b, IH), 7.40 (d, 7=6.0 Hz, IH), 7.52 (t, 7=7.4 Hz, IH), 7.72-7.76 (m, 2H), 8.18 (d, 7=8.5 Hz, IH); LC-MS (retention time: 1.95 min, method B), MS m/z 718(M++H).
Example 25, Compound 25.
Stepl:
A mixture of Example 24, Step 1 (39 mg, 0.10 mmol), phenylboronic acid (14.6 mg, 0.12 mmol), sodium tert-butoxide (38 mg, 0.40 mmol) and ((t-Bu)2POH)2PdCl2 (POPd) (5 mg, 0.01 mmol) in THF (2 mL) was heated to reflux for 4 h. After cooling down, the formed mixture was quenched with 5% citric acid (aq) and extracted with EtOAc (20 mL). The organic layer was washed with brine, dried overMgSC>4, filtered, evaporated. The residue was purified by prep-HPLC to yield 36 mg (83%) of the desired product as an off-white foam. 'HNMR (CD3OD) 6 1.43,1.45 (rotamers, 9H), 2.51-2.56 (m, 1H), 2.74-2.82 (m, 1H), 3.88-3.92 (m, 1H), 3.98-4.01 (m, 1H), 4.50-4.57 (m, 1H), 5.95 (b, 1H), 7.36-
7.39 (m, IH), 7.45-7.48 (m, 2H), 7.55 (t, 7=7.3 Hz, IH), 7.70 (t, 7=7.5 Hz, IH), 7.84-
7.89 (m, 2H), 8.14-8.17 (m, 3H), 9.05 (b, IH);
LC-MS (retention time: 1.97 min, method B), MS m/z 435 (M*+H).
Step 2:
This product was prepared by the same procedure as described in Example 11, Step 4, except using the product of Example 25, Step 1 instead. 'H NMR (DMSO-d6) 5 0.98-1.10 (m, 4H), 1.38-1.41 (m, 10H), 1.74-1.81 (m, IH), 2.18-2.34 (m, 2H), 2.47-2.49 (m, IH), 2.95-2.99 (m, IH), 3.74-3.96 (m, 2H),4.34-4.37 (m, IH), 5.12 (d, 7=10.5 Hz, IH), 5.26 (d, 7=17.8 Hz, IH), 5.75-5.82 (m, IH), 5.95 (b, IH), 7.41-7.45 (m, IH), 7.51-7.54 (m, 2H), 7.61-7.64 (m, IH), 7.78-7.82 (m, IH), 7.98 (d, 7=9.0 Hz, IH), 8.06 (s, IH), 8.13-8.14 (m, IH), 8.18-8.20 (m, 2H), 9.05 (b, IH), 10.34 (b, IH); LC-MS (retention time: 1.99 min, method B), MS m/z 647 (M*+H).
Step 3:
This product, was prepared by the same procedure as described in Example 11, Step 5 as a white solid, except usin^ the product of Example 25, Stftp 2 instead. LC-MS (retention time: 1.55 min, method B), MS m/z 547
Step 4:
Compound 25 was prepared by the same procedure as described in Example 11, Step 6 as a white solid, except using the product of Example 25, Step 3 instead. 'HNMR (CD3OD) 8 0.92-1.09 (m, 12H), 1.26-1.30 (m, 10H), 1.43-1.46 (m, IH), 1.87-1.90 (m, IH), 2.21-2.26 (m, IH), 2.36-2.41 (m, IH), 2.70-2.75 (m, IH), 2.93-2.97 (m, IH), 4.18-4.30 (m, 2H), 4.46-4.48 (m, IH), 4.55-4.58 (m, IH), 5.12 (d, 7=10.5 Hz, IH), 5.29 (d, 7=18.0 Hz, IH), 5.72-5.79 (m, IH), 6.10 (b, IH), 7.37-7.40 (m, IH), 7.46-7.49 (m, 3H), 7.70 (t, 7=7.5 Hz, IH), 7.85-7.89 (m, 2H), 8.16-8.20 (m, 3H); LC-MS (retention time: 2.08 min, method B), MS m/z 760 (M*+H).
Example 26: Preparation of Compound 26.
Step 1:
This product was prepared by the same procedure as described in Example 25, Step
1, except using 4-methoxyphenylboronic acid instead.
'HNMR (CD3OD) 8 1.40,1.45 (rotamers, 9H), 2.50-2.55 (m, IH), 2.73-2.81 (m,
IH), 3.81-3.89 (m, 4H), 3.98-4.01 (m, IH), 4.50-4.57 (m, IH), 5.93 (b, IH), 7.02 (d,
7=9.0 Hz, 2H), 7.50 (t, 7=7.3 Hz, IH), 7.67 (t, 7=7.5 Hz, IH), 7.73 (s, IH), 7.83 (d,
J=8.5 Hz, IH), 8.09 (d, J=8.5 Hz, 2H), 8.15 (d, J=8.0 Hz, IH);
LC-MS (retention time: 2.00 min, method B), MS m/z 465 (M++H).
Step 2:
This product was prepared by the same procedure as described in Example 11, Step 4, except using the product of Example 26, Step 1 instead. 'HNMR (CD3OD) 5 1.06-1.09 (m, 2H), 1.17-1.27 (m, 2H), 1.42-1.47 (m, 10H), 1.88-1.90 (m, IH), 2.21-2.26 (m, IH), 2.33-2.39 (m, IH), 2.61-2.65 (m, IH), 2.95-2.99 (m, IH), 3.85 (s, 3H), 3.86-3.90 (m, IH), 3.99-4.00 (m, IH), 4.43-4.45 (m, IH), 5.13 (d, .7=10.8 Hz, IH), 5.31 (d, J=18.0 Hz, IH), 5.77-5.80 (m, IH), 5.99 (b, IH), 7.02 (d, 7=9.0 Hz, 2H), 7.51 (t, 7=7.3 Hz, IH), 7.68 (t, .7=7.5 Hz, IH), 7.76 (s, IH), 7.84 (d, 7=8.5 Hz, IH), 8.09 (d, 7=8.5 Hz, 2H), 8.15 (d, 7=8.0 Hz, IH); LC-MS (retention time: 2.02 min, method B), MS m/z 677 (M*+H).
Step 3:
This product was prepared by the same method as described in Example 11, Step 5 as a white solid, except using the product of Example 26, Step 2 instead. LC-MS (retention time: 1.53 min, method B), MS m/z 577 (M"*+H).
Step 4:
Compound 26 was prepared by the same method as described in Example 11, Step 6, except using the product of Example 26, Step 3 instead. 'HNMR (CD3OD) 60.93-1.09 (m, 12H), 1.26-1.30 (m, 10H), 1.44-1.46 (m, IH), 1.87-1.90 (m, IH), 2.21-2.26 (m, IH), 2.36-2.41 (m, IH), 2.70-2.75 (m, IH), 2.93-2.97 (m, IH), 3.86 (s, 3H), 4.18-4.25 (m, IH), 4.30 (b, IH), 4.46-4.48 (m, IH), 4.55-4.58 (m, IH), 5.12 (d, 7=10.5 Hz, IH), 5.29 (d, 7=18.0 Hz, IH), 5.72-5.79 (m, IH), 6.08 (b, IH), 7.02 (d, 7=9.0 Hz, 2H), 7.44 (t, 7=7.3 Hz, IH), 7.66 (t, 7=7.5 Hz, IH), 7.75 (s, IH), 7.83 (d, 7=8.5 Hz, IH), 8.09 (d, 7=8.5 Hz, 2H), 8.15 (d, 7=8.0 Hz, IH); LC-MS (retention time: 2.03 min, method B), MS m/z 790 (JVT+H).
Example 27: Preparation of Compound 27.
Stepl:
This product was prepared by the same method as described in Example 25, Step 1, except using 4-pyridylboronic acid instead.
'H NMR (CD3OD) 5 1.43,1.46 (rotamers, 9H), 2.53-2.56 (m, IH), 2.80-2.89 (m, IH), 3.90-3.93 (m, IH), 4.00-4.05 (m, IH), 4.50-4.57 (m, IH), 6.00, 6.05(rotamers,
IH), 7.80 (t, 7=7.3 Hz, IH), 7.87 (t, 7=7.5 Hz, IH), 8.08 (d, 7=8.5 Hz, IH), 8.32 (d, 7=8.0 Hz, IH), 8.49 (s, IH), 8.84 (d, 7=6.0 Hz, 2H), 8.84 (d, 7=6.5 Hz, 2H); LC-MS (retention time: 1.39 min, method B), MS m/z 436 (M^+H).
Step 2:
The product was prepared by the same method as described in Example 11, Step 4, except using the product of Example 27, Step 1 instead. 'HNMR (CD3OD) 5 1.06-1.09 (m, 2H), 1.17-1.27 (m, 2H), 1.42-1.46 (m, 10H), 1.88-1.90 (m, IH), 2.21-2.26 (m, IH), 2.33-2.39 (m, IH), 2.61-2.65 (m, IH), 2.95-
7=10.8 Hz, IH), 5.32 (d, 7=18.0 Hz, IH), 5.77-5.80 (m, IH), 6.10 (b, IH), 7.79 (t, 7=7.3 Hz, IH), 7.88 (t, 7=7.5 Hz, IH), 8.08 (d, 7=8.5 Hz, IH), 8.31 (d, .7=8.0 Hz, IH), 8.47 (s, IH), 8.79 (d, 7=7.0 Hz, 2H), 8.86 (d, 7=6.5 Hz, 2H); LC-MS (retention time: 1.49 min, method B), MS m/z 648 (M'+H).
Step 3:
This product was prepared by the same method as described in Example 11, Step 5 as a white solid, except using the product of Example 27, Step 2 instead. LC-MS (retention time: 0.96 min, method B), MS m/z 548 (IvT+H).
Step 4:
Compound 27 was prepared by the same method as described in Example 11, Step 6, except using the product of Example 27, Step 3 instead. 'HNMR (CD3OD) 50.94-1.09 (m, 12H), 1.22-1.26 (m, 10H), 1.44-1.49 (m, IH), 1.88-1.92 (m, IH), 2.22-2.25 (m, IH), 2.41-2.44 (m, IH), 2.70-2.75 (m, IH), 2.93-2.98 (m, IH), 4.18-4.21 (m, IH), 4.25 (b, IH), 4.53-4.62 (m, 2H), 5.12 (d, 7=10.0 Hz, IH), 5.29 (d, 7=20.0 Hz, IH), 5.72-5.77 (m, IH), 6.12 (b, IH), 7.67 (t, 7=7.3 Hz, IH), 7.82 (t, 7=7.5 Hz, IH), 8.02 (d, 7=8.5 Hz, IH), 8.29 (d, 7=8.0 Hz, IH), 8.31 (s, IH), 8.55 (d, 7=7.0 Hz, 2H), 8.76 (d, 7=6.5 Hz, 2H); LC-MS (retention time: 1.49 min, method B), MS m/z 761 (M*+H).
This product was prepared by the same method as described in Example 25, Step 1, except using 4-N,N-dimethylamino-phenylboronic acid instead. LC-MS (retention time: 1.64 min, method B), MS m/z 478 (M++H).
Step 2:
This product was prepared by the same method as described in Example 11, Step 4,
except using the product of Example 28, Step 1 instead.
LC-MS (retention time: 1.70 min, method B), MS m/z 690 (MT+H).
Step 3:
(Figure Removed)
This product was prepared by the same method as described in Example 11, Step 5 as a white solid, except using the product of Example 28, Step 2 instead. LC-MS (retention time: 1.20 min, method B), MS m/z 590 (JVf+H).
Step 4:
Compound 28 was prepared by the same method as described in Example 11, Step 6, except using the product of Example 28, Step 3 instead. 'HNMR (d6-DMSO)60.92-1.10 (m, 13H), 1. 30 (s, 9H), 1.35-1.38 (m, IH), 1.68-1.71 (m, IH), 2.12-3.00 (m, 2H), 2.59-2.62 (m, IH), 2.91-2.95 (m, IH), 2.99 (s, 6H), 3.93-4.10 (m, 2H), 4.32-4.40 (m, 2H), 5.09 (d, 7=11.5 Hz, IH), 5.23 (d, 7=19.0 Hz, IH), 5.54-5.64 (m, IH), 5.92 (b, IH), 6.83 (d, 7=9.0 Hz, 2H), 7.42 (t, 7=7.3 Hz, IH), 7.70 (t, 7=7.5 Hz, IH), 7.81 (s, IH), 7.87 (d, 7=8.5 Hz, IH), 8.04 (d, 7=9.0 Hz, 2H), 8.15 (d, 7=8.0 Hz, IH); LC-MS (retention time: 1.72min, method B), MS m/z 803 (M++H).
Example 29: Preparation of Compound 29.
This product was prepared by the same method as described in Example 25, Step 1,
except using 4-cyano-phenylboronic acid instead.
LC-MS (retention time: 1.87 min, method B), MS m/z 460 (M^+H).
Step2:
This product was prepared by the same method as described in Example 11, Step 4,
except using the product of Example 29, Step 1 instead.
LC-MS (retention time: 1.88 min, method B), MS m/z 672 (M^+H).
Step 3:
This product was prepared by the same method as described in Example 11, Step 5 as a white solid, except using the product of Example 29, Step 2 instead. LC-MS (retention time: 1.41 min, method B), MS m/z 572 (JVT+H).
Step 4:
Compound 29 was prepared by the same method as described in Example 11, Step 6 as a white solid, except using the product of Example 29, Step 3 instead. 'H NMR (CD3OD) 6 0.92-1.09 (m, 12H), 1. 25-1.26 (m, 10H), 1.42-1.46 (m, IH), 1.86-1.89 (m, IH), 2.20-2.22 (m, IH), 2.33-2.34 (m, IH), 2.68-2.71 (m, IH), 2.93-2.95 (m, IH), 4.13-4.28 (m, 2H), 4.49-4.60 (m^ 2H), 5.12 (d, 7=10.5 Hz, IH), 5.28 (d, 7=18.0 Hz, IH), 5.71-5.80 (m, IH), 6.09 (b, IH), 7.56 (t, 7=7.3 Hz, IH), 7.74 (t, 7=7.5 Hz, IH), 7.83 (d, 7=10.5 Hz, 2H), 7.93 (d, 7=7.5 Hz, IH), 8.01 (s, IH), 8.22 (d, 7=7.5 Hz, IH), 8.37 (d, 7=10.5 Hz, 2H); LC-MS (retention time: 1.87 min, method B), MS m/z 785 (M*+H).
Example 30, Preparation of Compound 30.
This product was prepared by the same method as described in Example 25, Step 1,
except using 3-furanoboronic acid instead.
LC-MS (retention time: 1.85 min, method B), MS m/z 425 (MVH).
Step 2:
This product was prepared by the same method as described in Example 11, Step 4,
except using the product of Example 30, Step 1 instead.
LC-MS (retention time: 1.88 min, method B), MS m/z 637 (M++H).
Step 3:
This product was prepared by the same method as described in Example 11, Step 5, except using the product of Example 30, Step 2 instead. LC-MS (retention time: 1.38 min, method B), MS m/z 537
Step 4:
Compound 30 was prepared by the same method as described in Example 11, Step 6 as a white solid, except using the product of Example 30, Step 3 instead. 'HNMR (CD3OD) 80.95-1.09 (m, 12H), 1. 23-1.30 (m, 10H), 1.43-1.46 (m, IH), 1.87-1.90 (m, IH), 2.21-2.23 (m, IH), 2.30-2.34 (m, IH), 2.64-2.70 (m, IH), 2.93-2.96 (m, IH), 4.11-4.29 (m, 2H), 4.41-4.44 (m, 1 H), 4.54-4.56 (m, IH), 5.12 (d, 7=10.5 Hz, IH), 5.29 (d, 7=17.5 Hz, IH), 5.71-5.80 (m, IH), 6.02 (b, IH), 7.00 (s, IH), 7.44 (t, 7=7.2 Hz, IH), 7.52 (s, IH), 7.57 (s, IH), 7.66 (t, 7=7.0 Hz, IH), 7.79 (d, 7=8.0 Hz, IH), 8.14-8.17 (m, 2H); LC-MS (retention time: 1.93 min, method B), MS m/z 750 (M++H).
Step 1:
This product was prepared by the same method as described in making of Example 21, Step 2 as a white solid, except using 3-bromo-isoquinoline (Atkins et al, JOC, 1973, 400) instead.
!H NMR (CDC13) 6 7.60-7.62 (m, 2H), 7.71-7.73 (m, 2H), 8.12 (s, 1H), 8.99 (s, 1H); jreiemion time: u. /a mm, memou D), ivio m/z zzf , zzo ^jvi -t-n;.
Step 2:
This product was prepared by the same method as described in Example 1 1 , Step 2 as white solid, except using 3-bromo-isoquinoline 2-oxide instead. 'HNMR (CDC13) 5 7.66-7.71 (m, 1H), 7.74-7.76 (m, 2H), 7.83 (s, 1H), 8.29 (d, 7=8.5 Hz, 1H); LC-MS (retention time: 1.55 min, method B), MS m/z 242, 244 (M++H).
Step 3:
This product was prepared by the same method as described in Example 11, Step 3 as a foam, except using 3-bromo-l-chloro-isoquinoline instead. 'H NMR (CD3OD) 8 1.43,1.44 (retainers, 9H), 2.41-2.47 (m, 1H), 2.69-2.72 (m, 1H), 3.80-3.84 (m, 1H), 3.88-3.90 (m, 1H), 4.46-4.52 (m, 1H), 5.76 (b, 1H), 7.57-7.61 (m, 2H), 7.73-7.75 (m, 2H), 8.15 (d, 7=8.0 Hz, 1H);
LC-MS (retention time: 1.79 min, method B), MS m/z 437,439 (M++H).
Step 4:
A mixture of 2-tributylstannanyl-pyrazine (44 mg, 0.12 mmol), tetrakis(triphenylphosphine) palladium (0) (12 mg, 0.01 mmol) and the product of Example 31, Step 3 (44 mg, 0.1 mmol) in toluene (1 mL) was heated to reflux for 3 h. After removing the volatiles in vacuo, the residue was purified by prep-HFLC to yield 35 mg (80%) of the desired product as a yellow solid. LC-MS (retention time: 1.77 min, method B), MS m/z 437 (M*"+H).
Step 5:
This product was prepared by the same method as described in Example 11, Step 4,
except using the product of Example 31, Step 4 instead.
LC-MS (retention time: 1.78 min, method B), MS m/z 649 (M*+H).
This product was prepared by the same method as described in Example 11, Step 5 as a white solid, except using the product of Example 31, Step 5 instead. LC-MS (retention time: 1.26 min, method B), MS m/z 549 (M++H).
Step 7:
Compound 31 was prepared by the same method as described in Example 11, Step 6, except using the product of Example 31, Step 6 instead. 'H1SFMR (CD3OD) 60.95-1.10 (m, 12H), 1.24-1.27 (m, 10H), 1.44-1.47 (m, IH), 1.87-1.90 (m, IH), 2.19-2.22 (m, IH), 2.38-2.44 (m, IH), 2.71-2.76 (m, IH), 2.93-2.96 (m, IH), 4.18-4.28 (m, 2H), 4.50-4.61 (m, 2H), 5.12 (d, 7=10.5 Hz, IH), 5.29 (d, 7=17.5 Hz, IH), 5.71-5.80 (m, IH), 6.12 (b, IH), 7.60 (t, 7=7.2 Hz, IH), 7.77 (t, 7=7.0 Hz, IH), 7.97 (d, 7=8.5 Hz, IH), 8.26 (d, 7=8.5 Hz, IH), 8.44 (s, IH), 8.59 (s, IH), 8.70 (s, IH), 9.61 (s, IH); LC-MS (retention time: 1.84 min, method B), MS m/z 762 (M*+H).
Example 32: Preparation of Compound 32.
This product, 2-oxy-isoquinoline-3-carbonitrile, was prepared by the same method as described in Example 21, Step 2 as a white solid, except using 3-cyano-isoquinoline instead.
'H NMR (DMSO-de) 6 7.74 (t, 7=8.0 Hz, IH), 7.84 (t, 7=8.2 Hz, IH), 7.97 (d, 7=8.5 Hz, IH), 8.03 (d, 7=8.5 Hz, IH), 8.85 (s, IH), 9.17 (s, IH);
LC-MS (retention time: 0.48 min, method B), MS m/z 111
This product, l-chloro-isoquinoline-3-carbonitrile was prepared by the same method as described in Example 11, Step 2 as white solid, except using 3-cyano-isoquinoline 2-oxide instead.
'HNMR (CDCi3) 8 7.87-7.91 (m, 2H), 7.92-7.94 (m, IH), 8.09 (s, m), 8.42-8.44
(m, IH);
LC-MS (retention time: 1.22 min, method B), MS m/z 189 (M++H).
Step 3:
This product was prepared by the same method as described in Example 1, Step 5,
except using l-chloro-isoquinoline-3-carbonitrile instead.
'HNMR (CD3OD) 5 1.05 (s, 9H), 1.17 (s, 9H), 2.34-2.40 (m, IH), 2.71-2.78 (m, IH),
4.09-4.1 1 (m, IH), 4.21 (b, IH), 4.48-4.52 (m, IH), 4.68-4.72 (m, IH), 5.89 (b, IH),
7.74 (t, 7=7.5 Hz, IH ), 7.86 (t, 7=7.5 Hz, IH), 7.94-7.97 (m, 2H), 8.31 (d, 7=8.0 Hz,
IH);
LC-MS (retention time: 1.66 min, method B), MS m/z 497 (Mf+H).
Step 4:
Compound 32 was prepared by the same method as described in Example 1, Step 9 as a white solid, except using the product of Example 32, Step 3 instead.
'H NMR (CD3OD) S 1.04-1.09 (m, 12H), 1.20-1.27 (m, 10H), 1.39-1.45 (m, IH),
1.85-1.88 (m, IH), 2.20-2.30 (m, 2H), 2.63-2.71 (m, IH), 2.91-2.97 (m, 1H),4.09-
4.13 (m, IH), 4.23 (d, J=9.3 Hz, IH), 4.49-4.58 (m, 2H), 5.13 (d, /=10.5 Hz, IH),
5.28 (d, 7=18.0 Hz, IH), 5.69-5.81 (m, IH), 5.92 (b, IH), 6.60 (d, 7=10.0 Hz, IH),
7.72 (t, 7=7.5 Hz, IH), 7.86 (t, 7=7.5 Hz, IH), 7.96-7.99 (m, 2H), 8.29 (d, 7=8.0 Hz,
IH);
LC-MS (retention time: 1.75 min, method B), MS m/z 714 (M"+H).
Example 33: Preparation of Compound 33.
This product, 3-methyl-isoquinoline 2-oxide, was prepared by the same method as described in Example 21, Step 2 as a white solid, except using 3-methyl-isoquinoline instead. 'H NMR (CD3OD) 5 2.64 (s, 3H), 7.64-7.72 (m, 2H), 7.88-7.95 (m, 2H), 9.05 (s,
IH);
LC-MS (retention time: 0.61 min, method B), MS m/z 160 (M*+H).
Step 2:
This product, l-chloro-3-methyI-isoquinoline was prepared by the same method as
described in Example 11, Step 2 as white solid, except using 3-methyl-isoquinoline
2-oxide instead.
'H NMR (CDC13) 6 2.65 (s, 3H), 7.25 (s, 1H), 7.61 (t, 7=7.5 Hz, 1H), 7.69 (t, 7=7.5
Hz, 1H), 7.74 (d, 7=8.0 Hz, 1H), 8.27 (d, 7=8.5 Hz, 1H);
LC-MS (retention time: 1.47 min, method B), MS m/z 178 (M++H).
Step 3:
This product was prepared by the same method as described in Example 1, Step 5 as
a white solid, except using l-chloro-3-methyl-isoquinoline instead.
'HNMR (CD3OD) 8 1.05 (s, 9H), 1.23 (s, 9H), 2.51 (s, 3H), 2.34-2.40 (m, 1H), 2.72-
2.78 (m, 1H), 4.05-4.12 (m, 1H), 4.26 (b, 1H), 4.41 (d, 7=10 Hz, 1H), 4.62-4.67 (m,
1H), 5.90 (b, 1H), 7.14 (s, 1H), 7.38 (t, 7=7.5 Hz, 1H), 7.62 ( t, 7=7.5 Hz, 1H), 7.68
(d, 7=8.0 Hz, 1H), 8.14 (d, 7=8.0 Hz, 1H);
LC-MS (retention time: 1.84 min, method B), MS m/z 486
Step 4:
Compound 33 was prepared by the same method as described in Example 1, Step 9 as a white solid, except using the product of Example 33, Step 3 instead. 'HNMR (CD3OD) 8 0.99-1.09 (m, 12H), i.23-1.25 (m, 10H), 1.41-1.45 (m, 1H), 1.86-1.90 (m, 1H), 2.21-2.31 (m, 2H), 2.52 (s, 3H), 2.58-2.61 (m, 1H), 2.91-2.97 (m, 1H), 4.08-4.12 (m, 1H), 4.28 (b, 1H), 4.40 (d, 7=10.0 Hz, 1H), 4.50-4.55 (m, 1H),
5.12 (d, 7=10.0 Hz, 1H), 5.30 (d, 7=18.0 Hz, 1H), 5.71-5.81 (m, 1H), 5.93 (b, 1H),
7.12 (s, 1H), 7.38 (t, 7=7.5 Hz, 1H), 7.62 ( t, 7=7.5 Hz, 1H), 7.68 (d, 7=8.0 Hz, 1H),
8.12 (d, 7=8.0 Hz, 1H), 9.12 (b, 1H);
LC-MS (retention time: 1.85 min, method B), MS m/z 698 (M++H).
Example 34: Preparation of Compound 34.
Step 1:
This product, 3-cyclopropyl-isoquinoline 2-oxide was prepared by the same method as described in Example 21, Step 2 as a white solid, except using 3-cyclopropyl-isoquinoline (L. Eippin, J. Muchowski, J. O. C, 1993, 2631-2632) instead. LC-MS (retention time: 0.95 min, method B), MS m/z 186 (M'+H).
Step 2:
This product, l-chloro-3-cyclopropyl-isoquinoline was prepared by the same method as described in Example 11, Step 2 as white solid, except using 3-cyclopropyl-isoquinoline 2-oxide instead.
'HNMR (CD3OD) 8 1.00-1.04 (m, 4H), 2.H-2.18 (m, IH), 7.55 (s, IH), 7.61 (t, 7=8.0 Hz, IH), 7.72 (t, 7=8.0 Hz, IH), 7.83 (d, 7=13.5 Hz, IH), 8.27 (d, 7=14.5 Hz, IH); LC-MS (retention time: 1.70 min, method B), MS m/z 204 (M"+H).
This product was prepared by the same method as described in Example 1, Step 5 as
a white solid, except using l-chloro-3-cyclopropyl-isoquinoline instead.
'HNMR (CD3OD) 80.93-1.05 (m, 13H), 1.29 (s, 9H), 2.06-2.10 (m, 1H), 2.39-2.44
(m, 1H), 2.70-2.76 (m, 1H), 4.05-4.12 (m, 1H), 4.27 (b, 1H), 4.35 (d, 7=10.0 Hz, 1H),
4.62-4.67 (m, 1H), 5.78 (b, 1H), 7.18 (s, 1H), 7.38 (t, J=1.5 Hz, 1H), 7.61 (t, 7=7.5
Hz, 1H), 7.66 (d, 7=8.0 Hz, 1H), 8.09 (d, 7=8.0 Hz, 1H);
LC-MS (retention time: 1.96 min, method B), MS m/z 512 (IVT+H).
Step 4:
Compound 34 was prepared by the same method as described in Example 1, Step 9
as a white solid, except using the product of Example 34, Step 3 instead.
'HNMR (CD3OD) 8 0.93-1.09 (m, 16H), 1.24-1.30 (m, 10H), 1.42-1.46 (m, 1H),
1.87-1.90 (m, 1H), 2.06-2.11 (m, 1H), 2.21-2.32 (m, 2H), 2.56-2.61 (m, 1H), 2.92-
2.97 (m, 1H), 4.08-4.12 (m, 1H), 4.28 (b, 1H), 4.32 (d, 7=10.0 Hz, 1H), 4.48-4.53 (m,
1H), 5.12 (d, 7=10.5 Hz, 1H), 5.30 (d, 7=17.5 Hz, 1H), 5.72-5.77 (m, 1H), 5.82 (b,
1H), 7.18 (s, 1H), 7.36 (t, 7=7.5 Hz, 1H), 7.60 (t, 7=7.5 Hz, 1H), 7.67 (d, 7=8.0 Hz,
1H), 8.07 (d, 7=8.0 Hz, 1H);
LC-MS (retention time: 2.00 min, method B), MS m/z 724 (M^+H).
Step 1:
A mixture of 3-hydroxy-isoquinoline (725 mg, 5.0 mmol), cesium carbonate (4.89 g, 15.0 mmol), Mel (781 mg, 5.5 mmol) in DMF (50 mL) was stirred at the ambient temperature for 12 h. The mixture was diluted with EtOAc (200 mL), filtered, washed with water (200 mL, X2) and 1M NaOH (aq), brine respectively. The organic layer was dried over MgSCU, filtered, evaporated. The residue was purified bv Pren-HPLC to vield 120 me (15%) of the desired nroduct as a white solid !H NMR (CDC13) 6 4.03 (s, 3H), 6.99 (s, IH), 7.36 (t, 7=8.0 Hz, IH), 7.56 (t, 7=8.2 Hz, IH), 7.68 (d, 7=8.5 Hz, IH), 7.87 (7=8.5 Hz, IH); LC-MS (retention time: 0.54 min, method B), MS m/z 160 (M*+H). -
Step 2:
This product, 3-methoxy-isoquinoline 2-oxide, was prepared by the same method as described in Example 21, Step 2 as a white solid, except using 3-methoxy-isoquinoline instead. LC-MS (retention time: 0.83 min, method B), MS m/z 176 (M*+H).
Step 3:
(Figure Removed)
This product, l-chloro-3-methoxy-isoquinoline was prepared by the same method as described in Example 11, Step 2 as white solid, except using 3-methoxy-isoquinoline 2-oxide instead. LC-MS (retention time: 1.62 min, method B), MS m/z 194
Step 4:
This product was prepared by the same method, as described in Example 1, Step 5 as
a white solid, except using l-chloro-3-methoxy-isoquinoline instead.
'HNMR (CD3OD) 5 1.05 (s, 9H), 1.23 (s, 9H), 2.35-2.43 (m, IH), 2.72-2.79 (m, IH),
3.96 (s, 3H), 4.01-4.11 (m, IH), 4.26 (b, IH), 4.48 (d, 7=10.0 Hz, IH), 4.62-4.67 (m,
IH), 5.83 (b, IH), 6.61 (s, IH), 7.25 (t, 7=7.5 Hz, IH), 7.54 (t, 7=7.5 Hz, 1H),7.63
(d, 7=8.1 Hz, IH), 8.08 (d, 7=8.4 Hz, IH);
LC-MS (retention time: 1.82 min, method B), MS m/z 502 (M^+H).
Step 5:
Compound 35 was prepared by the same method as described in Example 1, Step 9 as a white solid, except using the product of Example 35, Step 4 instead. 'HNMR (CD3OD) 8 1.04-1.08 (m, 12H), 1.24-1.27 (m, 10H), 1.43-1.45 (m, IH), 1.86-1.89 (m, IH), 2.21-2.26 (m, IH), 2.30-2.34 (m, IH), 2.62-2.66 (m, IH), 2.91-
2.97 (m, IH), 3.99 (s, 3H), 4.09-4.12 (m, IH), 4.27-4.28 (m, IH), 4.46 (d, 7=10.0 Hz,
IH), 4.51^.58 (m, IH), 5.12 (d, 7=10.5 Hz, IH), 5.30 (d, 7=18.0 Hz, IH), 5.72-5.76
(m, 1H), 5.88 (b, 1H), 6.62 (s, 1H), 7.26 (t, 7=7.5 Hz, 1H ), 7.55 (t, .7=7.5 Hz, 1H),
7.65 (d, 7=8.0 Hz, 1H), 8.06 (d, 7=8.5 Hz, 1H);
LC-MS (retention time: 1.85 min, method B), MS m/z 714
Example 36: Preparation of Compound 36.
A mixture of 4-methoxy-2-methyl-benzoic acid (5.00 g, 30.1 mmol) and thionyl chloride (20.0 g, 0.17 mol) was heated to reflux for 30 min. Removed the volatile in vacuo. After pumping overnight, the viscous oily acid chloride was used as crude for the next reaction without any purification.
To a solution of 4-methoxy-2-methyl-benzoyl chloride in Cl^Cfe (60 mL) at 0°C was added diethylamine dropwise. The formed mixture was allowed to warm up to the ambient temperature for 2 h with stirring. Removed the volatiles in vacuo. The residue was triturated with EtOAc (100 mL) and filtered. The filtrate was washed
with 1M HO , 1M NaOH and brine, dried over MgSCv Evaporation of the solvent yielded 6.51 g (98%) of the desired product as a viscous oil. LC-MS (retention time: 1.20 min, method B), MS m/z 222 (M++H).
Step 2:
To a solution of N,N-diethyl-4-methoxy-2-methyl-benzamide (221 mg, 1.0 mmol) in THF (2 mL) at -78°C was added n-BuLi (0.84 mL of 2.5 M in hexane, 2.10 mmol) dropwise. The formed orange solution was kept at this temperature for additional 30 min before dropwise addition of benzonitrile (103 mg, l.Ommol). The final solution was allowed to warm up to the ambient temperature over night with stirring. Quenched with iced 5% citric acid. Filtered, washed with water, dried. Trituration with 2:1 hexane-EtOAc (5 mL) yielded 205 mg (82%) of the desired product as a white solid.
'H NMR (de-DMSO) 8 3.89 (s, 3H), 6.84 (s, IH), 7.05-7.07 (m, IH), 7.18 (d, .7=2.5 Hz, IH), 7.44-7.51 (m, 3H), 7.78 (d, 7=7.0 Hz, IH), 8.11 (d, 7=9.0 Hz, IH); LC-MS (retention time: 1.20 min, method B), MS m/z 252 (M++H).
Step 3:
This product, l-chloro-6-methoxy-3-phenyl-isoquinoline, was prepared by the same method as described in Example 11, Step 2 as a white solid, except using 6-methoxy-3-phenyl-2H-isoquinolin-l-one instead.
'H NMR (CDC13) 8 3.97 (s, 3H), 7.12 (d, .7=2.5 Hz, IH), 7.23-7.26 (m, IH), 7.40-7.42 (m, IH), 7.46-7.50 (m, 2H), 7.89 (s, IH), 8.08 (d, 7=7.0 Hz, 2H), 8.21 (d, 7=9.0 Hz, IH); LC-MS (retention time: 1.90 min, method B), MS m/z 270,271 (M^+H).
Step 4:
To a solution of the product of Example 21, Step 1 (320 mg, 0.57 mmol) in DMSO (5 mL) was added potassium tert-butoxide (321 mg, 2.87 mmol). The formed solution was stirred at the ambient temperature for 30 min before addition of 1-chloro-6-methoxy-3-phenyl-isoquinoline (Example 36, Step 3) (155 mg, 0.57 mmol). The final solution was stirred for 12 h. Quenched with iced water, acidified with 1M
HC1 to pH 4, extracted with EtOAc (20 mL, X2). The organic layers were washed
with brine, dried over MgSC>4, filtered, evaporated. The residue was purified by prep-
HPLC (40%B to 100%B, 15 min grdient) to yield 289 mg (64%) of Compound 36 as
a white solid.
'HNMR (CD3OD) 50.95-1.05 (m, 12H), 1.24-1.32 (m, 10H), 1.44-1.46 (m, IH),
1.87-1.90 (m, IH), 2.20-2.26 (m, IH), 2.30-2.36 (m. IH), 2.65-2.71 (m, IH), 2.93-
2.97 (m, IH), 3.94 (s, 3H), 4.12-4.28 (m, 2H), 4.38-4.52 (m, 2H), 5.12 (d, 7=10.0 Hz,
IH), 5.28 (d, 7=17.0 Hz, IH), 5.69-5.74 (m, IH), 6.05 (b, IH), 7.06-7.07 (m, IH),
7.26 (s, IH), 7.37-7.39 (m, IH), 7.44-7.48 (m, 2H), 7.77 (s, IH), 8.07 (d, 7=9.0 Hz,
lH),8.15(d,7=8.5Hz,2H);
LC-MS (retention time: 2.02 min, method B), MS m/z 790 (M*+H).
To a solution of N,N-diethyl-4-methoxy-2-methyl-benzamide (633 mg, 2.9 mmol) in THF (15 mL) at -78°C was added n-BuLi (2.3 mL of 2.5 M in hexane, 5.74 mmol) dropwise. The formed red solution was kept at this temperature for additional 30 min before being cannulated to a solution of thiazole-2-carboxylic acid ethyl ester (A. Medici et al, Tetrahedron Lett. 1983, p2901) (450 mg, 2.9 mmol) in THF (5 mL) at -78°C. The final dark green solution was kept to this temperature for 2 h with stirring. Quenched with sat. NHjCl (aq) and extracted with EtOAc (50 mL). The organic layer was washed with sat. NH/iCl (aq) and brine, dried, purified by flash column chromatography, eluting with 2:1 EtOAc:hexane to provide 405 mg (45%) of the desired product as an off-white viscous oil.
'H NMR (CDC13) 8 1.08 (t, 7=7.0 Hz, 6H), 3.22 (b, 2H), 3.44 (b, 2H), 3.79 (s, 3H), 4.59 (s, 2H), 6.79-6.81 (m, 1H), 6.86 (d, 7=2.5 Hz, 1H), 7.16 (d, 7=8.5 Hz, 1H), 7.66 (d, 7=3.0 Hz, 1H), 8.00 (d, 7=3.0 Hz, 1H); LC-MS (retention time: 1.30 min, method B), MS m/z 333 (M^+H).
Step 2:
A mixture of N,N-diethyl-4-methoxy-2-(2-oxo-2-thiazol-2-yl-ethyl)-benzamide (405 mg, 1.22 mmol) and NILtOAc (3.0 g, 38.9 mmol) was heated to 140°C in a sealed tube for 1 h. The melted solution was poured into iced water, filtered, washed the ca]*e thoroughly with water. The dried brownish solid (240 mg, 76%) was used as crude for the next reaction without further purification. LC-MS (retention time: 1.24 min, method B), MS m/z 259 (M++H).
Step 3:
This product, l-chloro-6-methoxy-3-thiazol-2-yl-isoquinoline, was prepared by the same method as described in Example 11, Step 2 as a white solid, except using 6-methoxy-3-thiazoI-2-yl-2H-isoquinolin-l-one instead.
'H NMR (CDC13) 6 3.97 (s, 3H), 7.16 (d, 7=4.0 Hz, 1H), 7.27-7.31 (m, 1H), 7.46 (d, 7=5.0 Hz, 1H), 7.93 (d, 7=5.5 Hz, 1H), 8.22 (d, 7=15.5 Hz, 1H), 8.39 (s, 1H); LC-MS (retention time: 1.66 min, method B), MS m/z 277 (M'+H).
Step 4:
Compound 37 was prepared by the same method as described in Example 36, Step 4, except using l-chloro-6-methoxy-3-thiazol-2-yl-isoquinoline instead. 'H NMR (CD3OD) 5 0.97-1.09 (m, 12H), 1.24-1.29 (m, 10H), 1.44-1.46 (m, 1H), 1.87-1.90 (m, 1H), 2.20-2.26 (m, 1H), 2.30-2.36 (m. 1H), 2.65-2.71 (m, 1H), 2.93-2.96 (m, 1H), 3.96 (s, 3H), 4.12-4.27 (m, 2H), 4.38-4.52 (m, 2H), 5.12 (d, 7=10.5 Hz, 1H), 5.29 (d, .7=17.5 Hz, 1H), 5.69-5.74 (m, 1H), 5.99 (b, 1H), 7.14 (d, 7=9.0 Hz, 1H), 7.33 (s, 1H), 7.66 (d, 7=3.5 Hz, 1H), 7.93 (d, J=3.0 Hz, 1H), 8.05 (s, 1H), 8.11 (d, 7=9.0 Hz, 1H), 9.14 (b, 1H); LC-MS (retention time: 1.89 min, method B), MS m/z 797 (IVT+H).
A mixture of 3-hydroxy-isoxazole-5-carboxylic acid methyl ester (5.72 g, 0.04 mol), methyl iodide (6.82 g, 0.044 mol) and cesium carbonate ( 39.1 g, 0.12 mol) in DMF (200 mL) was stirred at the ambient temperature over night. Diluted with EtOAc (1L), filtered. The filtrate was washed with water (1L, X2), 1M NaOH and brine respectively, dried over MgSO4, evaporated in vacuo to afford 4.80 g (76%) of the desired product as a white solid. The product obtained here was used as crude without further purification.
'H NMR (CDCI3) 5 3.92 (s, 3H), 4.00 (s, 3H), 6.51 (s, 1H); LC-MS (retention time: 0.69 min, method B), MS m/z 158 (M++H).
This product, N,N-diethyl-4-methoxy-2-[2-(3-methoxy-isoxazol-5-yl)-2-oxo-ethyl]-benzamide, was prepared by the same method as described in Example 37, Step 1, except using 3-methoxy-isoxazole-5-carboxylic acid methyl ester instead. LC-MS (retention time: 1.28 min, method B), MS m/z 347 (M*+H).
Step 3:
This product, 6-methoxy-3-(3-methoxy-isoxazol-5-yl)-2H-isoquinolin-l-one, was prepared by the same method as described in Example 37, Step 2, except using N,N-diethyl-4-methoxy-2-[2-(3-methoxy-isoxazol-5-yl)-2-oxo-ethyl]-benzamide instead. 'H NMR (DMSO-de) 8 3.89 (s, 3H), 3.97 (s, 3H), 7.01 (s, 1H), 7.14-7.16 (m, 2H), 7.43 (s, 1H), 8.13 (d,y=8.5 Hz, 1H); LC-MS (retention time: 1.31 min, method B), MS m/z 273 (M++H).
Step 4:
This product, l-chloro-6-methoxy-3-(3-methoxy-isoxazoI-5-yJ)-isoquinoline, was prepared by the same method as described in Example 11, Step 2 as a white solid, except using 6-methoxy-3-(3-methoxy-isoxazole-5-yl)-2H-isoquinolin-l-one instead. 'H NMR (CDCI3) 5 3.97 (s, 3H), 4.04 (s, 3H), 6.60 (s, IH), 7.17 (d, 7=2.5 Hz, IH), 7.31-7.33 (m, IH), 8.02 (s, IH), 8.23 (d, 7=9.0 Hz, IH); LC-MS (retention time: 1.73 min, method B), MS m/z 291,293 (M++H).
Step 5:
Compound 38 was prepared by the same method as described in Example 36, Step 4, except using l-chloro-6-methoxy-3-(3-methoxy-isoxazole-5-yl)-isoquinoline instead.
'HNMR (CD3OD) S 0.99-1.09 (m, 12H), 1.23-1.28 (m, 10H), 1.44-1.46 (m, IH), 1.87-1.90 (m, IH), 2.20-2.26 (m, IH), 2.30-2.36 (m, IH), 2.65-2.71 (m, IH), 2.93-2.96 (m, IH), 3.95 (s, 3H), 4.02 (s, 3H), 4.13-4.14 (m, IH), 4.24-4.26 (m, IH), 4.41-4.42 (m, IH), 4.52-4.55 (m, IH), 5.12 (d, 7=10.5 Hz, IH), 5.29 (d, 7=17.0 Hz, IH), 5.72-5.79 (m, IH), 5.96 (b, IH), 6.60 (s, IH), 7.15-7.17 (m, IH), 7.32 (s, IH), 7.80 (s, IH), 8.10 (d, 7=9.0 Hz, IH); LC-MS (retention time: 1.95 min: method BY MS mh 811 (
This product, N,N-diethyI-4-methoxy-2-[2-(5-methoxy-oxazol-2-yl)-2-oxo-ethyI]-benzamide, was prepared by the same method as described in Example 37, Step 1, except using 5-methoxy-oxazole-2-carboxylic acid ethyl ester instead. LC-MS (retention time: 1.24 min, method B), MS m/z 347 (M++H).
This product, 6-methoxy-3-(5-methoxy-oxazol-2-yl)-2H-isoquinolin-l-one, was prepared by the same method as described in Example 37, Step 2, except using N,N-diethyl-4-methoxy-2-[2-(5-methoxy-oxazol-2-yl)-2-oxo-ethyl]-benzamide instead. 'H NMR (DMSO-de) 6 3.94 (s, 3H), 4.01 (s, 3H), 6.34 (s, 1H), 6.99 (d, 7=2.0 Hz, 1H), 7.12-7.14 (m, 1H), 7.25 (s, 1H), 8.32 (d, .7=9.0 Hz, 1H); LC-MS (retention time: 1.22 min, method B), MS m/z 274 (M++H).
This product, l-chloro-6-methoxy-3-(5-methoxy-oxazol-2-yl)-isoquinoline, was prepared by the same method as described in Example 11, Step 2 as a white solid, except using 6-methoxy-3-(5-methoxy-oxazole-2-yl)-2H-isoquinolin-l-one instead. 'H NMR (CDC13) 8 3.96 (s, 3H), 4.00 (s, 3H), 6.34 (s, 1H), 7.12 (d, 7=2.5 Hz, 1H), 7.28-7.31 (m, 1H), 8.13 (s, 1H), 8.23 (d,/=9.0Hz, 1H);
144 LC-MS (retention time: 1.58 min, method B), MS m/z 291,293 (M++H).
Step 4:
Compound 39 was prepared by the same method as described in Example 36, Step 4, except using l-chloro-6-methoxy-3-(3-methoxy-isoxazole-5-yl)-isoquinoline instead.
'HNMR (CD3OD)50.99-1.09 (m, 12H), 1.23-1.28 (m, 10H), 1.44-1.46 (m, IH), 1.87-1.90 (m, IH), 2.20-2.26 (m, IH), 2.30-2.36 (m, IH), 2.65-2.71 (m, IH), 2.93-2.96 (m, IH), 3.95 (s, 3H), 4.02 (s, 3H), 4.13-4.14 (m, IH), 4.25 (b, IH), 4.41-4.42 (m, IH), 4.52-4.55 (m, IH), 5.12 (d, 7=10.0 Hz, IH), 5.29 (d, 7=17.0 Hz, IH), 5.72-5.79 (m, IH), 6.07 (b, IH), 6.45 (s, IH), 7.15-7.16 (m, IH), 7.29 (s, IH), 7.85 (s, IH), 8.10 (d, 7=9.0 Hz, IH), 9.11 (b, IH); LC-MS (retention time: 1.75 min, method B), MS m/z 811 (M*~+H).Step 1:
This product, l-chloro-6-methoxy-isoquinoIine 2-oxide was prepared by the same method as described in Example 21, Step 2, except using l-chloro-6-methoxy-isoquinoline (the product of Example 11, Step 2) instead. 'H NMR (CDC13) 5 4.00 (s, 3H), 7.14 (d, .7=2.5 Hz, IH), 7.41-7.43 (m, IH), 7.62 (d, .7=7.0 Hz, IH), 8.15 (d, 7=9.5 Hz, IH), 8.36 (d, 7=7.0 Hz, IH); LC-MS (retention time: 0.85 min, method B), MS m/z 210 (M^+H).
Step 2:
This product, l,3-dichloro-6-methoxy-isoquinoline was prepared by the same method as described in Example 11, Step 2, except using l-chloro-6-methoxy-isoquinoline 2-oxide instead.
'H NMR (CDC13) 5 3.94 (s, 3H), 6.98 (s, IH), 7.25-7.26 (m, IH), 7.52 9s, IH), 8.16 (d, 7=9.5 Hz, IH); LC-MS (retention time: 1.54 min, method B), MS m/z 228,230 (M++H).
Step 3:
This product was prepared by the same method as described in Example 24, Step 1 as a foam, except using l,3-dichloro-6-methoxy-isoquinoline instead. 'H NMR (CD3OD) 8 1.43,1.44 (rotamers, 9H), 2.39-2.44 (m, IH), 2.68-2.72 (m, IH), 3.80-3.90 (m, 2H), 3.91 (s, 3H), 4.79-4.82 (m, IH), 5.71 (b, IH), 7.10-7.14 (m, 2H), 7.26 (s, IH), 7.99-8.01 (m, IH);
LC-MS (retention time: 1.79 min method B), MS m/z 422 (M*+H).
Step 4:
This product was prepared by the same method as described in Example 11, Step 4,
except using the product of Example 40, Step 3 instead.
LC-MS (retention time: 1.83 min, method B), MS m/z 635 (M*+H).
Step 5:
This product was prepared by the same method as described in Example 11, Step 5 as a white solid, except using the product of Example 40, Step 4 instead. LC-MS (retention time: 1.36 min, method B), MS m/z 535 (M++H).
Step 6:
Compound 40 was prepared by the same method as described in Example 11, Step 6 as a white solid, except using the product of Example 40, Step 5 instead. 'HNMR (CD3OD) 8 1.07-1.11 (m, 12H), 1.26-1.30 (m, 10H), 1.46-1.48 (m, IH), 1.87-1.91 (m, IH), 2.21-2.34 (m, 2H), 2.62-2.66 (m, IH), 2.94-2.99 (m, 1H),3.95 (s, 3H), 4.06-4.11 (m, IH), 4.26-4.28 (m, IH), 4.46-4.56 (m, 2H), 5.15 (d, 7=10.0 Hz, IH), 5.29 (d, 7=17.0 Hz, IH), 5.72-5.79 (m, IH), 5.89 (b, IH), 6.63 (d, 7=9.0 Hz, IH), 7.08-7.09 (m, IH), 7.18 (s, IH), 7.34 (s, IH), 8.08 (d, 7=9.5 Hz, IH);
LC-MS (retention time: 1.99 min, method B), MS m/z 748 (M*+H).
Example 41: Preparation of Compound 41.
°
This product was prepared by the same method as described in Example 30, Step 1,
except using the product of Example 40, Step 3 instead.
LC-MS (retention time: 1.85 min, method B), MS m/z 455 (M++H).
Step 2:
This product was prepared by the same method as described in Example 11, Step 4 as a foam, except using the product of Example 41, Step 1 instead. LC-MS (retention time: 1.88 min, method B), MS m/z 667 (M++H).Step .3:
This product was prepared by the same method as described in Example 11, Step 5 as a white solid, except using the product of Example 41, Step 2 instead. LC-MS (retention time: 1.38 min, method B), MS m/z 567
Step 4:
compound 41 was prepared oy tne same metnod as descnoed in txampie 1 1, Step 6 as a white solid, except using the product of Example 41, Step 3 instead. JHNMR (CD3OD) 80.99-1.04 (m, 12H), 1.22-1.31 (m, 10H), 1.43-1.45 (m, IH), 1.87-1.89 (m, IH), 2.22-2.24 (m, IH), 2.30-2.34 (m, IH), 2.65-2.68 (m, IH), 2.93-2.96 (m, IH), 3.92 (s, 3H), 4.11-4.14 (m, IH), 4.28-4.30 (m, IH), 4.38-4.42 (m, 1 H), 4.53-4.55 (m, IH), 5.12 (d, 7=10.0 Hz, IH), 5.29 (d, 7=18.0 Hz, IH), 5.72-5.77 (m, IH), 5.99 (b, IH), 6.61 (d, J=5.0 Hz, IH), 6.98 (s, IH), 6.99-7.02 (m, IH), 7.17 (s, IH), 7.44 (s, IH), 7.57 (d, 7=5.0 Hz, IH), 8.03 (d, 7=10.0 Hz, IH), 8.14 (s, IH); LC-MS (retention time: 1.92 min, method B), MS m/z 780 (M^+H).
Example 42: Preparation of Compound 42.
Prepared following the procedures used in the preparation of Example 1 1 . Compound 11, except that 6-ethoxy cinnamic acid was used in place of 6-methoxy cinnamic acid as starting material for the P2 element.
'H NMR (500 MHz, CD3OD) 6 ppm 0.98-1.09 (m, 15H), 1.24-1.31 (m, 10H), 1.42-1.46 (m, IH), 1.85-1.90 (m, IH), 2.19-2.32 (m, 2H), 2.57-2.63 (m, IH), 2.91-2.97 (m, IH), 4.03-4.09 (m, IH), 4.17 (q, 7=7.0 Hz, 2H), 4.42 (d, 7=11.3 Hz, IH), 4.49-4.54 (m, IH), 5.12 (d, 7=17.4Hz, IH), 5.72-5.78 (m, IH), 5.83 (s, IH), 7.07-7.10 (M, IH), 7.15 (s, IH), 7.22 (d, 7=5.8 Hz, IH), 7.87 (d, 7=5.8 Hz, IH), 8.08 (d, 7=8.8 Hz, IH); MS: (M+H)+ 728.
Step 1:
To a solution of 2-bromo-5-methoxybenzoic acid (i.68g, 7.27mmol) in DMF (50mL) in a medium pressure flask (Chemglass) was added benzamidine (1.25g, S.OOmmol), K2CO3 (6.0g, 43.6mmol), and copper powder (336mg, 1.45mmol). The reaction mixture was heated to 180C° for Ih. Copper and excess K^COs were
and the resulting crude was purified by flash column chromatography (SiC>2,5% MeOH in DCM) to give a light green solid (1.55g, 84% yield): 'H NMR (DMSO-d4 and concentrated to give a viscous oil which was redissolved in minimal amount of EtOAc and
hexanes was added to effect the precipitation of most of the Ph3PO by-product. PhaPO was removed by vacuum filtration and the liquid filtrate was concentrated. The resulting viscous oil was purified by a flash column chromatography(SiO2, 4:1 hex:EtOAc) to give a white solid product (1.76g, 45% yield): 'H NMR (60/40 rotomers, CDC13) 8 1.47 (s, 9H), 2.49-2.55 (m, IH), 2.73-2.83 (m, 1H),3.80 (s, 1.8H), 3.81 (s, 1.2H), 3.96 (s, 3H), 4.03-4.09 (m, IH), 4.54 (t, J = 8.0 Hz,0.6H), 4.66 (t, J = 7.8 Hz), 4.96-5.06 (m, IH), 5.97 (br s, 0.6H), 6.04 (br s, 0.4H), 7.33 (dd, J = 6.1,2.7 Hz, IH), 7.46-7.51 (m, 4H), 7.91 (d, J = 9.2 Hz, IH), 8.49 (t, J=8.5Hz, 2H); 13C NMR (rotomers, CDC13) 5 21.7,22.0, 28.3, 28.4, 35.8, 36.8, 52.3,52.4,52.6, 55.8, 55.9, 57.9, 58.3, 74.5, 74.9, 80.6,101.2, 101.3, 115.7,125.8, 126.0,128.1, 128.5, 129.7,130.2,137.9,147.8,153.8,157.7,158.0,158.0, 164.8, 173.1,173.3; MSm/z (MH+)480.
The product from Example 45, Step 2 (760.0mg, 1.59mmol) was dissolved in 50% TFA in DCM and stirred at rt for 2h. The solvent was concentrated and the resulting brown viscous oil was dried in vacua overnight. The product was used directly for the next reaction.
Step 4:
To a solution of the brown viscous oil product from Example 45, Step 3 (963mg, 1.59 mmol) and DIPEA (1.23g, 9.54mmol) in DCM (1 ImL) were added N-
BOC L-riBuGly (440mg, 1.90mmole), HBTU (902mg, 2.38mmole) and HOBt (364mg, 2.38mmole). After stirring at rt for 14h, the solvent and excess DDPEA was concentrated and the resulting brown viscous oil was purified by flash column (SiC>2, 4:1 hex:EtOAc) to give a white solid (0.922mg, 98% yield for the two steps): *H NMR (CDCl3/MeOD) 6 0.94 (s, 9H), 1.15 (s, 9H), 2.38-2.42 (m, IH). 2.60-2.73 (m, IH), 3.61 (s, 3H), 3.83 (s, 3H), 4.08-4.17 (m, 2H), 4.25 (d, J = 11.5 Hz, IH), 4.69 (t, J = 8.0 Hz, IH), 5.99 (br s, IH), 7.13 (s, IH), 7.38 (s, 5H), 7.80 (d, J = 9.0 Hz, IH), 8.32 (d, J = 5.5 Hz, IH); 13C NMR (CDCl3/MeOD) 8 29.6, 31.4, 31.6,33.04, 38.2, 39.0, 55.8, 56.9,59.2,61.5,62.1,78.3, 83.1,105.0,119.0,129.4, 131.5,131.9,132.6 , 133.8,141.2,151.0,161.4,161.6,168.2, 175.2,175.7; MS m/z (MH*) 593.
Step 5:
To a solution of the product from Example 45, Step 4 (409mg, 0.69mmol) in THF (lOmL) was added IN NaOH (2mL). After stirring at rt for 19h, the reaction was acidified with concentrated HC1 to about pH 5 and extracted with DCM (3 x 50mL). The combined organic layer was dried over MgSC>4 and concentrated to give a yellow solid product (370mg, 92% yield) which was used directly in the next reaction after drying in vacua: 'H NMR (CDC13) 6 1.05 (s, 9H), 1.25 (s, 9H), 2.76-2.83 (m, 2H), 3.94 (s, 3H), 4.23-4.27 (m, 2H), 4.41 (d, J = 11.6 Hz, IH), 4.92 (t, J = 7.6 Hz, IH), 5.20 (d, / = 8.9 Hz, IH), 6.08 (br s, IH), 7.31 (s, IH), 7.46-7.50 (m, 5H), 7.93 (d, J = 9.15 Hz, IH), 8.51 (d, J - 7.3 Hz, 2H); MS m/z (MH+) 579.
To a solution AT-Boc-vinylcyclopropanecarboxylic acid (IR, 25/15,2R 1:1 mixture) (l.Olg, 4.46mmol) in THF (20 mL) and DMSO (2mL) was added GDI (l.OSg, 6.69mmol) and DMAP (817mg, 6.69mmol). After stirring at 70 °C for lh,
LIic icaisiiim JiiJAiuic wa& auuwcu tu i^uui LU n auu was ncaicu wain
isopropylsulfonamide (l.lg, 8.92mmol) and DBU (1.36g, 8.92mmol). The reaction mixture was stirred at it for 16h and it was concentrated and purified by flash column chromatography (SiOa, 5% MeOH in DCM) to give a brown viscous oil (1.4g, 98% yield): 'H NMR (Methanol-d,) 5 1.25 (m, 1H), 1.33 (d, J = 6.7 Hz, 3H), 1.36 (d, / = 6.7 Hz, 3H), 1.45 (s, 9H), 1.84 (dd, J = 7.6, 5.2 Hz, 1H), 2.16 (d, J = 7.6 Hz, 1H), 3.58 (br s, 1H), 5.08 (d, J= 11.6 Hz, 1H), 5.27 (d, J = 15.6 Hz, 1H), 5.58-5.66 (m, 1H); MS m/z (MH*) 332.
Step 7:
The product from Example 45, Step 6 (113mg, 0.34mmol) was treated with a 50% solution of trifluoroacetic acid in DCM (lOmL) and stirred at rt for 1.4h. Solvent and excess trifluoroacetic acid were removed in vacua. The resulting brown viscous oil was dried in vacua (1.3g, 99% yield) and'used without further purification: 'H NMR (DMSO-de) 5 1.24 (d, J = 6.7 Hz, 3H), 1.26 (d, J = 6.7 Hz,
3H), 1-54 (dd, / = 9.6,6.6 Hz, IH), 1.99 (t, J = 6.9 Hz, IH), 2.24 (d, J = 8.5 Hz, IH), 3.58-3.63 (m, IH), 5.18 (d,/= 10.4 Hz, IH), 5.33 (d,/= 17.1 Hz, IH), 5.61-5.69 (m, IH), 8.83 (br s, 3H); 13C NMR (DMSO-de) 5 15.2,15.9,16.5, 29.9, 41.6,52.1, 116.0,118.9,132.0,158.2,167.3; MS m/z (MH*) 233.
Step 8:
To a mixture of the product from Example 45, Step 5(117mg, 0.338mmol) and DIPEA (174mg, 1.35mmol) in DCM (5mL) was added HBTU (128mg, 0.338mmole), HOBt (52mg, 0.338mmole) and the product from Example 45, Step 7 (130mg, 0.225mmol) After stirring at it for 16h, the mixture was concentrated and the resulting brown viscous oil was purified by flash column chromatography (SiC>2, 1:3 hex:EtOAc then 95:5 DCM:MeOH) to give an off white solid product (150mg, 84% yield) The final product, Compound 45, is a mixture of isomers; the variation occuring at the PI vinylcyclopropyl portion of the molecule (17?, 25/15,2R 1:1 mixture): 'H NMR (Methanol-d4) 6 0.92 (br s, 2H), 1.03 (s, 9H), 1.17 (s, 9H), 1.27-1.38 (m, 9H), 1.42-1.46 (m, IH), 1.83 (dd, J = 8 J, 5.3 Hz, 0.4H), 1.90 (dd, J = 7.9, 5.5 Hz, 0.6H), 2.24-2.31 (m, IH), 2.37-2.45 (m, IH), 2.67-2.75 (m, IH), 3.73-3.79 (m, IH), 3.90 (s, 3H), 4.21 (dd, J = 9.3, 6.0 Hz, 2H), 4.48 (d, J =11.3 Hz, IH), 4.61 (q, J = 8.9 Hz, IH), 5.14 (t, J = 9.0 Hz, IH), 5.33 (t, J = 17.9 Hz, IH), 5.70-5.76 (m, IH), 6.06 (d, J = 11.9 Hz, IH), 6.61 (d, J = 8.9 Hz, IH), 7.34 (d, / = 2.8 Hz, IH), 7.49 (br s, 5H), 7.87 (d, J - 8.9 Hz, IH), 8.46 (d, 7 = 4.3 Hz, 2H); 13C NMR (Methanol-oU) 8 15.7,16.1,16.5, 16.8,23.9, 27.1,28.6,35.8,36.0, 36.2,36.3,36.4, 42.6, 42.8, 54.7, 54.8,55.5,56.4, 61.1, 61.2, 80.5, 102.9,117.0,118.8, 118.9,126.8, 129.4,129.6,130.2,131.5,134.4, 139.2,148.8, 158.0,159.3, 159.8, 166.3,171.1, 175.1, 184.3; MS m/z (MH4) 793.
Compound 46 was prepared by following Steps 1 through 5 and Step 8 of Example 45 except that the following modifications were made:
Stepl:
Modifications: 2-bromo-4,5-dimethoxybenzoic acid and cyclopropylcarbamidine hydrochloride were utilized as starting materials. Product:
Data: 'H NMR (DMSO-de) 5 0.97-1.01 (m, 2H), 1.03-1.06 (m, 2H), 1.90-1.94 (m, 1H), 3.84 (s, 3H), 3.87 (s, 3H), 6.93 (s, 1H), 7.37 (s, 3H), 12.28 (s, 1H); I3C NMR (DMSO-dg) 5 9.03, 13.17,55.47,55.73,104.81,107.27, 113.26, 145.16, 147.48, 154.44, 157.21,160.89 ; MS m/z (MH*) 247.
Step 2:
Modifications: The product from Example 46, Step 1 was used as starting material in place of the product from Example 45, Step 1. Product:
(Figure Removed)
Data: *H NMR (CDC13) 6 1.00-1.04 (m, 2H), 1.07-1.11 (m, 2H), 1.43 (s, 5.4H), 1.46 (s, 3.6H), 2.17-2.21 (m, IH), 2.37-2.43 (m, IH), 2.62-2.69 (m, IH), 3.75 (s, 1.8H), 3.78 (s, 1.2H), 3.92 (d, / = 2.8 Hz, IH), 4.00 (s, 3.6H), 4.01 (s, 2.4H), 4.48 (t, J = 8.0 Hz, 0.6H), 4.59 (t, J = 7.6 Hz, 0.4H), 5.7 (br s, 0.6H), 5.74 (br s, 0.4H), 7.18 (s, IH), 7.20 (s, IH); I3C NMR (CDCI3) 6 9.6, 9.7, 18.1, 28.3, 28.4, 35.8, 36.7, 52.2, 52.4, 56.3, 57.8, 58.2, 74.0, 74.5, 80.5, 80.6, 101.0, 101.1, 106.3, 108.6, 148.8, 149.1, 153.8, 155.4, 164.4, 165.9, 172.9, 173.2; LC-MS m/z (MH+) 474.
Steps 3 and 4:
The product from Example 46, Step 2 was used as starting material in place of the product from Example 45, Step 2. Product:
Data: !H NMR (Methanol-dO 5 1.04 (s, 9H), 1.08-1.21 (m, 4H), 1.14 (s, 9H), 2.17-2.21 (m, IH), 2.39-2.41 (m, IH), 2.74-2.77 (m, IH), 3.77 (s, 3H), 3.92 (s, 3H), 3.98 (m, 3H), 4.09 (dd, J = 11.4,3.8 Hz, IH), 4.17 (d, J= 8.9 Hz, IH), 4.42 (d, /= 11.3 Hz, IH), 4.76 (t,/= 8.2 Hz, IH), 5.81 (br s, IH), 6.43 (d, J- 8.6 Hz, IH), 7.14 (d, J = 6.1 Hz, IH), 7.27 (d, J = 5.8 Hz, IH); I3C NMR (Methanol-d^ 8 10.0, 10.3,18.6,
26.9, 28.5, 28.8, 35.8,36.1,38.9, 52.8, 54.9, 56.7, 59.6,60.5,76.6, 80.4,102.7, 106.2, 109.9, 149.8,150.7,157.6, 166.0, 167.3,173.5,173.6; MS m/z (MH*)587.
Step 5:
The product from Example 46, Step 4 was used as starting material in place of the product from Example 45, Step 4. Product:
Data: 'H NMR (Methanol-dU) 5 1.03 (s, 9H), 1.13 (s, 9H), 1.20-1.23 (m, 4H), 2.15-2.19 (m, 1H), 2.40-2.45 (m, 1H), 2.70-2.76 (m, 1H), 3.90 (s, 3H), 3.96 (s, 3H), 4.08
(t, J = 8.1 Hz, IH), 5.77 (br s, IH), 7.09 (s, IH), 7.20 (s, IH); J3C NMR (Methanol-64) 5 10.2,10.5,18.6,26.9,28.5, 28.8,36.0, 36.3, 54.9,56.8,59.7, 60.4, 76.8, 80.4, 102.6,105.9, 109.9,126.9,127.9, 149.3, 150.8,157.65,157.8,166.1,167.3,173.3, 175.1; MS m/z (MH*)573.
Step 8:
The product from Example 46, Step 5 was used as starting material in place of the
product from Example 45, Step 5. The final product, Compound 46, is a mixture of
isomers; the variation occuring at the PI vinylcyclopropyl portion of the molecule
(1/e, 25/15,27? 1:1 mixture).
Product:(1R.2S) and (1S.2R), 1:1 Mixture at P1 Compound 46
Data: 'H NMR (Methanol-cU) 6 1.03 (s, 9H), 1.05-1.09 (m, 4H), 1.16 (s, 4.5H), 1.17 (s, 4.5H), 1.19-1.22 (m, 1H), 1.31 (d, J= 6.7 Hz, 2H), 1.33-1.38 (m, 7H), 1.18-1.89 (m, 1H), 2.15-2.20 (m, 2H), 2.35-2.44 (m, 1H), 3.23 (q, J- 7.4 Hz, 1H), 3.70-3.75 (m, 1H), 3.91 (s, 3H), 3.98 (s, 3H), 4.08-4.13 (m, 2H), 4.16 (dd, J= 8.9,3.1 Hz, 1H), 4.38 (t, J = 13.1 Hz, 1H), 4.58-4.62 (m, 1H), 4.06 (m, 1H), 5.29 (t, / = 15.2 Hz, 1H), 5.83 (br s, 1H), 7.15 (s, 1H), 7.27 (d, J = 4.3 Hz, 1H); MS m/z (MET) 787. Example 47: Preparation of Compound 47
Compound 47 was prepared by following analogous steps used to procure Compound 45 of Example 45 .ortho-bromobenzoic acid used as starting material as was cyclopropanesulfonic acid (lR-amino-2S-vinyl-cyclopropanecarbonyl)-amide hydrochloride salt. Compound 47: MH+=761
Compound 48 was prepared by following Steps 1 through 5 and Step 8 of Example 45 except that the following modifications were made:
Stepl:
Modifications: Acetamidine hydrochloride and 2-bromo-5-methoxybenzoic acid were utilized as starting materials. Product:
Data: 'H NMR (DMSO) 5 2.31 (s, 3H), 3.85 (s, 3H), 7.36 (d, J = 6.2 Hz, IH), 7.37 (s, IH), 7.51 (d, J = 7.8 Hz, IH), 12.15 (s, IH); 13C NMR (DMSO) 6 21.11, 55.41, 105.57, 121.22, 123.59, 128.12, 143.34, 151.68, 157.00, 161.45; LC-MSm/e (MH+) 191.
Step 2:
Modifications: The product from Example 48, Step 1 was used as starting material in place of the product from Example 45, Step 1. Product:
Data: JH NMR (CDC13) 8 1.43 (s, 5.4H), 1.45 (s, 3.6H), 2.38-2.45 (m, IH), 2.62-2.71 (m, IH), 2.66 (s, 1.8H), 2.68 (s, 1.2H), 3.77 (1.8H), 3.79 (s, 1.2H), 3.92 (s, 3H), 3.93-3.98 (m, 2H), 4.49 (t, J = 8.0 Hz, 0.6H), 4.61 (t, J = 7.8 Hz, 0.4H), 5.82 (t, J = 2.1 Hz, 0.6H), 5.89 (t, J = 2.3 Hz, 0.4H), 7.26 (dd, J = 4.7, 3.2 Hz, IH), 7.42 (dd, J = 6.3, 2.8 Hz, IH), 7.75 (d, J = 9.15 Hz, IH); 13C NMR (CDC13) 5 26.1, 28.3, 28.4, 35.8, 36.7, 52.2, 52.2, 52.4, 52.5, 55.755.8, 57.9, 58.2, 74.1, 74.7, 80.6, 101.0, 101.2, 114.9, 125.6, 125.9, 128.6, 147.3, 153.8, 154.5, 157.6, 157.6, 161.2, 164.6, 173.0, 173.3; LC-MSm/e (MH+)418.
Steps 3 and 4:
Modifications: The product from Example 48, Step 2 was used as starting material in place of the product from Example 45, Step 2. Product:
Data: ]HNMR (MeOD) S 1.03 (s, 9H), 1.07 (s, 9H), 2.38-2.42 (m, IH), 2.68 (s, 3H), 2.80 (q, J = 7.8 Hz, IH), 3.76 (s, 3H), 3.89 (s, 3H), 4.07 (dd, J = 11.9, 3.4 Hz, IH), 4.13 (br s, IH), 4.55 (d, J = 12.2 Hz, IH), 4.78 (t, J = 8.7 Hz, IH), 5.93 (s, IH), 7.37 (d, J = 2.75 Hz, IH), 7.48-7.51 (m, 2H), 7.70 (d, J = 5.7 Hz, IH); I3C NMR (MeOD) 8 25.6, 26.9, 28.4, 28.8, 35.9, 52.8, 55.0, 56.4, 59.7, 60.6, 77.2, 80.4, 102.9, 111.6,
Modifications: The product from Example 48, Step 4 was used as starting material in place of the product from Example 45, Step 4. Product:
Data: ]H NMR (MeOD) 8 1.03 (s, 9H), 1.08 (s, 9H), 2.41-2.46 (m, IH), 2.68 (s, 3H), 2.81 (q, J = 8.1 Hz, IH), 3.89 (s, 3H), 4.07 (dd, J = 11.8, 3.2 Hz, IH), 4.18 (d, J = 5.5 Hz, IH), 4.52 (d, J = 11.9 Hz, IH), 4.74 (t, J = 8.7 Hz, IH), 5.93 (br s, IH), 7.37 (d, J
= 2,81 Hz, IH), 7.49 (dd, J = 9.2, 2.4 Hz, IH), 7.71 (d, J = 9.2 Hz, IH); 13C NMR (MeOD) 8 25.7, 26.9, 28.5, 36.1, 55.0, 56.4, 59.7, 60.5, 77.1, 80.4, 103.0, 116.5, 127.0, 128.5, 147.7, 157.8, 159.6, 162.7, 166.4, 173.5, 174.9; LC- MS m/e (MH*) 517.
To a solution of the product from Example 48, Step 5 (45.8 mg, 0.089 mmol), cyclopropanesulfonic acid (lR-amino-2S-vinyl-cyclopropanecarbonyl)-amide hydrochloride salt (21.0 mg, 0.089 mmol) and DffiA (34.5 mg, 0.267 mmol) in DCM (1 mL) was added HATU (44.0 mg, 0.116 mmol). After stirring at it overnight, the reaction mixture was washed with 5% aqueous NaHCO3 (1 mL). The aqueous layer was extracted was 2x2 mL DCM. The organic layer was washed with 5% aqueous citric acid (1 mL), brine, dried over MgSO4, concentrated and purified by reversed prep-HPLC. This purification step resulted in the loss of the N-BOC protecting group at the P3 terr-leucine portion of the molecule: 'H NMR (MeOD) 8 1.07-1.12 (m, 2 H) 1.14 (s, 2 H) 1.14-1.16 (m, 2 H) 1.17 (s, 9 H) 1.20-1.30 (m, 3 H) 1.45 (dd, 7=9.46, 5.49.Hz, 1 H) 1.56 (s, 1 H) 1.92 (dd, J=8.20, 5.60 Hz, 1 H) 2.25-2.31 (m, 1 H) 2.39-2.45 (m, 1 H) 2.73 (m, 1 H) 2.76 (s, 3 H) 2.93-2.97 (m, 1 H) 3.94 (s, 1 H) 3.96 (s, 3 H) 4.07 (s, 1 H) 4.21 (d, 7=3.97 Hz, 0.4 H) 4.23 (d, 7=3.97 Hz, 0.6 H) 4.31 (m, 1 H) 4.73 (dd, 7=10.38,7.02 Hz, 1 H) 5.15 (dd, 7=10.38, 1.52 Hz, 1 H) 5.32 (dd, 7=17.1, 1.52 Hz, 1 H), 5.71-5.78 (m, IH) 6.11 (t, 7=3.51 Hz, 1 H) 7.46 (d, 7=2.75 Hz,
1 H) 7.67 (d, 7=3.06 Hz, 0.4 H) 7.69 (d, 7=3.05 Hz, 0.6 H) 7.82 (s, 0.6 H) 7.84 (s, 0.4 H).
Compound 49 was prepared by the same method as described for the preparation of Compound 48, except the product from Example 46, Step 5 and cyclopropanesulfonicacid(lR-amino-2S-vinyl-cyclopropanecarbonyl)-amide hydrochloride salt were used as starting material. The preparative KPLC purification step resulted in the loss of the N-BOC protecting group at the P3 tert-leucine portion of the molecule: !H NMR (MeOD) 8 1.09 (m, 2 H) 1.14 (d, 7=3.97 Hz, 2 H) 1.17 (s, 9 H) 1.25 (m, 3 H) 1.37 (m, 3 H) 1.44 (dd, 7=9.31,5.65 Hz, 2 H) 1.57 (s, 1 H) 1.92 (dd, 7=8.09, 5.65 Hz, 1 H) 2.28 (dd, 7=17.70, 8.55 Hz, 1 H) 2.32 (m, 1 H) 2.68 (dd, 7=14.19, 7.78 Hz, 1 H) 2.95 (m, 1 H) 3.98 (s, 3 H) 4.06 (s, 3 H) 4.08 (s, 1 H) 4.22 (d, 7=2.75 Hz, 1 H) 4.70 (dd, 7=9.77, 7.32 Hz, 1 H) 5.15 (dd, 7=10.38, 1.53 Hz, 1 H) 5.32 (dd, 7=17.40,1.22 Hz, 1 H) 5.74 (m, 1 H) 6.04 (m, 1 H) 7.24 (s, 1 H) 7.37 (s, 1 H)
(Figure Removed)
cribed for the preparation of Compound 48, except the product from Example 45, Step 5 and cyclopropanesulfonic acid (lR-amino-2S-vinyl-cyclopropanecarbonyl)-amide hydrochloride salt were used as starting material. The preparative HPLC purification step resulted in the loss of the N-BOC protecting group at the P3 teT-f-leucine portion of the molecule: 'H NMR (MeOD) 5 1.10 (m, 2 H) 1.14 (s, 1 H) 1.15 (d, 7=3.36 Hz, 1 H) 1.17 (d, 7=3.05 Hz, 9 H) 1.22 (m, 1 H) 1.27 (m, 2 H) 1.46 (dd, 7=9.46, 5.49 Hz, 1 H) 1.56 (s, 1 H) 1.93 (dd, 7=8.24, 5.49 Hz, 1 H) 2.29 (q, 7=8.55 Hz, 1 H) 2.48 (m, 1 H) 2.78 (dd, 7=13.89, 8.09 Hz, 1 H) 2.97 (m, 1 H) 3.96 (s, 2 H) 4.07 (s, 1 H) 4.32 (d, 7=2.14 Hz, 2 H) 4.76 (d, 7=7.02 Hz, 1 H) 4.78 (m, 1 H) 4.86 (d, 7=3.05 Hz, 1 H) 5.32 (dd, 7=17.09, 1.22 Hz, 1 H) 5.75 (m, 1 H) 6.24 (d, 7=2.44 Hz, 1 H) 7.45 (d, 7=2.75 Hz, 1 H) 7.52 (m, 3 H) 7.61 (dd, 7=9.16,2.75 Hz, 1 H) 7.96 (d, 7=9.16 Hz, 1 H).
Compound 51 was prepared by following Steps 1 through 5 and Step 8 of Example 45 except that the following modifications were made:
Stepl:.
Modifications: 2-bromo-4,5-dimethoxybenzoic acid and trifluoroamidine were utilized as starting materials. Product:
Data: 'H NMR (DMSO) 8 3.92 (s, 3H), 3.94 (s, 3H), 7.33 (s, 1H), 7.50 (s, 1H), 13.40 (br s, 1H); I3C NMR (DMSO) 6 55.8, 56.1, 104.9, 108.7, 150.2, 155.0; LC-MSm/e (MH+)275.
Step 2:
Modifications: The product from Example 51, Step 1 was used as starting material in place of the product from Example 45, Step 1.
Data: *H NMR (CDC13) 8 1.42 (s, 3.6H), 1.44 (s, 5.4H), 2.42-2.49 (m, IH), 2.67-2.73 (m, IH), 3.37 (s, 1.2H), 3.78 (s, 1.8H), 3.97 (t, J = 6.5 Hz, IH), 4.02 (s, 2.4H), 4.04 (s, 3.6H), 4.48 (t, J = 7.9 Hz, 0.6H), 4.60 (t, J = 7.7 Hz, 0.4H), 5.86 (br s, 0.6H), 5.90 (br s, 0.4H), 7.27-7.29 (m, IH), 7.38-7.44 (m, IH); I3C NMR (CDC13) 5 8.2, 28.3, 35.7, 36.7, 52.1, 52.2, 52.4, 56.5, 57.8, 58.2, 75.5, 76.0, 80.7, 100.8, 107.6, 111.0, 119.7, 148.2, 150.2, 151.4, 153.8, 154.5, 156.4, 165.1, 172.7, 173.0; LC-MS m/e (MH+) 502.
Steps 3 and 4:
Modifications: The product from Example 51, Step 2 was used as starting material in place of the product from Example 45, Step 2. Product:
Data: 'H NMR (MeOD) 8 1.03 (s, 9H), 1.08 (s, 9H), 2.41-2.45 (m, IH), 2.80-2.84 (m, IH), 3.76 (s, 3H), 3.96 (s, 3H), 4.00 (s, 3H), 4.10-4.14 (m, 2H), 4.52 (d, J = 11.6 Hz, IH), 4.80 (t, J = 8.7 Hz, IH), 5.92 (br s, IH), 7.35 (br s, 2H); 13C NMR (MeOD) D 26.9, 28.4, 28.8, 35.7, 36.0, 52.8, 54.8, 56.9, 59.6, 60.7,77.9, 80.3, 102.2, 107.9, 112.4,120.3,149.3,153.2,157.8, 158.3,173.5; LC-MS m/e (MH+J615.
Step 5:
Modifications: The product from Example 51, Step 4 was used as starting material in place of the product from Example 45, Step 4. Product:
Data: 'H NMR (MeOD) 8 1.03 (s, 9H), 1.09 (s, 9H), 2.44-2.49 (m, IH), 2.80-2.84 (m, IH), 3.97 (s, 3H), 4.01 (s, 3H), 4.10-4.24 (m, 3H), 4.50 (d, J = 11.9 Hz, IH), 4.76 (t, J = 7.9 Hz, IH), 5.93 (br s, IH), 7.36 (br s, 2H); 13C NMR (MeOD) 8 26.9, 28.4, 28.8, 36.0, 36.1, 54.8, 56.9, 57.0, 60.6, 77.9, 80.3, 102.3, 108.0, 112.5, 120.3, 149.3, 151.3,153.2,158.2,158.3,166.7, 173.5; LC-MS m/e (MH+)601.
Step 8:
Modifications: The product from Example 51, Step 5 was used as starting material in place of the product from Example 45, Step 5. The final product, Compound 51, is a mixture of isomers; the variation occuring at the PI vinylcyclopropyl portion of the molecule (1R, 25/15, 2R 1:1 mixture).
Data: *H NMR (DMSO) 5 0.23 (s, 4..5H), 0.23 (s, 4.5H), 0.35 (s, 4.5H), 0.36 (s, 4.5H), 0.45-0.59 (m, 8H), 0.63-0.66 (m, IH), 1.04 (dd, J= 8.2, 5.2 Hz, IH), 1.10 (dd, J = 8.2, 5.5 Hz, IH), 1.47-1.53 (m, IH), 1.58-1.61 (m, IH), 1.87-1.90 (m, IH), 2.95-3.01 (m, IH), 3.17 (s, 1.5H), 3.18 (s, 1.5H), 3.22 (s, 3H), 3.37 (br s, 2H), 3.68 (q, J = 5.9 Hz, IH), 3.82 (q, J = 8.6 Hz, IH), 4.33-4.37 (m, IH), 4.54 (t, J = 16.5 Hz, IH), 4.93 (q, J = 8.9 Hz, IH), 5.17 (d, J = 15.9 Hz, IH), 6.53 (s, IH), 6.58 (s, IH); 13C NMR (DMSO) 6 12.8, 13.2, 13.7, 13.9, 19.5, 20.6, 21.1, 24.3, 25.6, 32.9, 33.1, 33.4, 33.6, 36.1, 39.7, 39.9, 51.8, 51.9, 52.4, 54.0, 54.2, 57.7, 57.7, 58.1, 58.3, 75.1, 75.3, 77.5, 84.1, 99.2, 105.2, 107.9, 109.5, 116.0, 116.1,118.7, 123.9, 127.4, 131.5, 146.5, 148.6, 150.3, 155.1, 155.5, 163.7, 164.7, 168.2, 168.3, 170.7, 172.2; LC-MS m/e (MH*) 815.
Compound 52 was prepared by the same method as described for the preparation of Compound 48, except the product from Example 51, Step 5 and cyclopropanesulfonic acid (lR-amino-2S-vinyl-cyclopropanecarbonyl)-amide hydrochloride salt were used as starting material. The preparative HPLC purification step resulted in the loss of the N-BOC protecting group at the P3 terf-leucine portion of the molecule: 'H NMR (MeOD) 6 1.11 (m, 3 H) 1.17 (s, 9 H) 1.25 (m, 3 H) 1.46 (dd, 7=9.46, 5.49 Hz, 1 H) 1.92 (dd, 7=8.24, 5.49 Hz, 1 H) 2.28 (q, 7=8.95 Hz, 1 H) 2.42 (m, 1 H) 2.72 (dd, 7=14.19, 7.17 Hz, 1 H) 2.96 (m, 1 H) 4.01 (s, 3 H) 4.04 (m, 5 H) 4.24 (m, 2 H) 4 73 (dd, 7=10-?.?.., 7.17 Rr, 1 R) 5-15 (dd; 7=10.53: 1.37 H/.; 1 H) 5.32 (d, 7=17.09 Hz, 1 H) 5.75 (m, 1 H) 6.07 (s, 1 H) 7.41 (s, 1 H) 7.47 (s, 1 H).
To a solution of (I/?, 25/15,2^ 1:1 mixture) cyclopropanesulfonic acid (1-amino-2-vinyl-cyclopropanecarbonyl)-amide trifluoroacetic acid salt (626mg, 1.82mmol) in DCM (17mL) was added and DffiA (555mg, 4.29mmol) in DCM (17mL), HATU (754mg, 1.98mmole), and (2S, 4R)Fmoc-4-amino-l-boc-pyrrolidine-2-carboxylic acid (747mg, 1.65mmol). After stirring at rt for 24h, the mixture was washed with IN HC1 (lOmL), 5% aqueous NaHCO3 (4mL). Each aqueous layer was extracted with DCM (25 mL). The combined DCM was dried over MgS04 and concentrated. The resulting brown viscous oil was purified by flash column chromatography (SiO2,95:5 DCMMeOH) to give a yellow solid 822mg, 75% yield): 'HNMR (DMSO-de) 8 1.04-1.09 (m,3H), 1.15-1.27 (m,4H), 1.38-1.44 (m,7H), 1.47 (s, 9H), 1.84 (dd, .7=8.2,5.2 Hz, 1H), 2.01-2.30 (m, 4H), 2.90-2.98 (m, 1H), 3.64-3.71 (m, 1H), 4.16-4.22 (m, 4H), 4.39 (bs, 2H), 5.13 (dd, 7=10.7,0.9 Hz, 1H), 3.31 (d, 7=17.1 Hz, 1H), 5.72-5.79 (m, 1H), 7.31 (t, 7=7.3 Hz, 3H), 7.38 (t, 7=7.5 Hz, 3H), 7.64 (d, 7=7.02 Hz, 3H), 7.79 (d, 7=7.63 Hz, 3H); LC-MS m/e (Na+MH*) 687.
Step 2:
The product from Example 53, Step 1 (500mg, 0.752mmol) was treated with 50% TFA in DCM (lOmL). After stirring at rt for 0.5h, the resulting brown reaction mixture was concentrated to give a brown solid (489mg, 84%yield): *H NMR (DMSO-de) 8 1.03-1.19 (m, 4H), 1.24-1.26 (m, 1H), 1.35 (dd, 7=9.5, 5.5 Hz, 1H), 1.91-1-96 (m, 1H), 2.22-2.30 (m, 1H), 2.40 (bs, 1H), 2.93-2.98 (m, 1H), 3.60 (bs, 1H), 4.21 (t, .7=5.6 Hz, 2H), 4.47 (bs, 3H), 5.17 (d, 7=9.2 Hz, 1H), 5.32 (d, 7=17.1 Hz, 1H), 5.64-5.67 (m, 1H), 7.31 (t, 7=7.3 Hz, 3H), 7.39 (t, 7=7.5 Hz, 3H), 7.63 (d, 7=7.3 Hz, 2H), 7.80 (d, 7=7.3 Hz, 2H); (LC-MS m/e (MH+) 565.
SStep 3:
To a solution of the product from Example 53, Step 2 (260mg, 0.383mmol) in DCM (4 mL) was added DIPEA (218mg, 1.69mmol), HATU (I65mg, 0.422mmol), and A^-BOC L-tBuGly (lOOmg, 0.422mmol). After stirring at rt for 16h, the reaction mixture was diluted with HiO (3mL), acidified with IN HC1 to pH=l. The aqueous layer was extracted with DCM (2xl5mL). The combined organic layer was washed with 5% NaHCO3 (3mL), brine (5mL), dried over MgSO4 and concentrated. The resulting brown viscous oil was purified by flashed column
chromatography (SiO2, 95:5 DCM:MeOH) to give a brown foamy solid (281mg, 94% yield): 'H NMR (DMSO-d6) 6 0.96-1.08 (m, 4H), 1.05 (s, 9H), 1.15-1.26 (m, 2H), 1.35-1.38 (m, 5H), 1.42 (s, 9H), 1.85 (dd, 7=9.5, 5.5 Hz, IH), 2.07 (bs, IH), 2.22 (q, 7=8.7 Hz, IH), 2.92-2.95 (m, IH), 3.90 (bs, IH), 4.20 (d, 7=6.4 Hz, 3H), 4.29-4.39 (m, 5H), 5.13 (d, 7=10.7, IH), 5.31 (dd, 7=18.0, 5.8 Hz, IH), 5.70-5.77 (m, IH), 7.30 (t, 7=7.3 Hz, 3H), 7.39 (t, 7=7.3 Hz, 4H), 7.63 (dd, 7=6.7, 2.8 Hz, 3H), 8.80 (d, 7=7.63 Hz, 3H); LC-MS mtz (MH*) 678.
Step 4:
The product from Example 53, Step 3 was treated with 10% piperidine in DMF (3.3mL). After stirring at rt for 14hr, solvent was removed and the resulting brown viscous oil was purified by flash column chromatography (SiOa, 95:5 DCM:MeOH) to isolate the pure highest Rf 1R,2S PI diastereomer as a pale yellow solid (31mg). The other isomer was isolated in a mixture and was not used: LC-MS m/z (MH1-) 556.
To a solution of the product from Example 53, Step 4 in DMF (2mL) was added polyvinylpyridine (13mg) and Fmoc-isothiocyanate. After stirring at rt for 14h, the reaction mixture was treated with piperidine (172mg, 2.02mmol). The reaction was stirred at rt for an additional 6h after which it was concentrated and dried under vacuo overnight. The crude residue was re-dissolved in DMF (2mL) and treated with 2-bromoacetophenone and stirred at rt for another 14h. The reaction mixture was concentrated and the resulting residue was purified by flash column chromatography (SiOa, 95:5 DCM:MeOH) to give Compound 53 as a light yellow solid (21.9mg, 50% yield): ]H NMR (DMSO-de) 6 0.87-0.92 (m, 1H), 1.05 (bs, 13H), 1.16-1.25 (m, 4H), 1.34-1.38 (m, 2H), 1.42 (s, 9H), 1.87 (t, 7=6.6 Hz, 1H), 2.22-2.25 (m, 2H), 2.48 (t, 7=10.7 Hz, 1H), 2.93 (bs, 1H), 3.04 (q, 7=7.3 Hz, 1H) 3.30-3.31 (m, 2H), 3.43-3.49 (m, 1H), 4.01 (d, 7=10.4 Hz, 1H), 4.07-4.12 (m, 1H), 4.27 (t, 7=9.5 Hz, 1H), 4.44 (t, 7=7.0 Hz, 1H), 4.58 (bs, 1H), 5.11 (d, 7=10.1 Hz, 1H), 5.30 (dd, 7=16.8,9.6 Hz, 1H), 5.73-5.78 (m, 1H), 6.69 (d, 7=8.2 Hz, 1H), 6.86 (s, 1H), 7.25 (t, 7=7.3 Hz, 1H), 7.35 (t, 7=7.63 Hz, 2H), 7.82 (d, 7=8.2 Hz, 2H); LC-i'z (MET1") 715.
Reversed Phase Prep-HPLC conditions for Compound 55 through 155 as indicated:
Waters Xterra Prep MS CIS column, 5 mm (this means 5 micron particle size),
30mm x 100mm
Solvent A: 10% MeOH, 90% H20,10 mM NKtOAc
Solvent B: 90% MeOH, 10% H20,10 mM NHUOAc
50mL/min flow rate
Gradient: 0%B to 100%B for 10 min, hold at 100%B for 4 min
Step 1:
To a solution of Compound 11 (1.5 g, 2.10 mmol) in DCE (25 mL) was added TFA (25 mL). After stirring at rt for 15 min, the reaction mixture was concentrated. The resulting red viscous oil was re-dissolved in DCE (50 mL) and reconcentrated. It was then redissolved in DCM (15 mL) and treated with a solution of IN HC1 in Et2O (25 mL). The resulting suspension was chilled at 0 °C, vacuum filtrated, washed with Et2O and dried in vacuum oven to give product of step 1 as a white solid (1.4 g, 97% yield): 'HNMR(CD3OD, 500 MHz) 5 1.07-11.2 (m, 3 H) 1.14 (t, 7=4.12 Hz, 1 H) 1.17 (s, 9 H) 1.22 (dd, 7=10.53, 4.43 Hz, 1 H) 1.21-1.27 (m, 2 H) 1.42 (dd, 7=9.61, 5.34 Hz, 1 H) 1.91 (dd, 7=7.93, 5.49 Hz, 1 H) 2.27 (q, 7=8.85 Hz, 1 H) 2.32-2.38 (m, 1 H) 2.70 (dd, 7=13.43, 6.71 Hz, 1 H), 2.93-2.98 (m, 1 H) 3.96 (s, 3 H) 4.09 (s, 1 H) 4.14 (dd, 7=12.21, 3.66 Hz, 1 H) 4.32-4.35 (m, 1 H) 4.69 (dd, 7=10.53, 6.87 Hz, 1 H) 5.14 (dd, 7=10.38, 1.53 Hz, 1 H) 5.31 (dd, 7=17.40, 1.22 Hz, 1 H) 5.70-5.77 (m, 1 H) 5.90 (t, 7=3.51 Hz, 1 H) 7.24-7.27 (m, 1 H) 7.29 (d, 7=4.27 Hz, 1 H) 7.39 (t, 7=4.88 Hz, 1 H) 7.90 (d, 7=6.10 Hz, 1 H) 8.19 (m, 1 H) 9.22 (s, 1 H).
(Figure Removed)
Step 2:
To a solution mixture of product from step 1 of Example 55 (70.0 mg, 0.108 mmol) and DEA (41.8 mg, 0.323 mmol) in DCM (2 mL) was added acetic anhydride (33.0 mg, 0.323 mmol). After stirring at it for 14 h, solvent was removed and product was purified by reversed phase prep-HPLC to give Compound 55 (39.1 mg, 14% yield): 'HNMR^DsOD, 500 MHz) 8 1.00-1.03 (m, 1 H), 1.06 (s, 9 H), 1.07-1.10 (m, 1 H), 1.21-1.28 (m, 2 H), 1.43 (dd, 7=9.46, 5.19 Hz, 1 H), 1.88 (dd, 7=8.55, 5.49 Hz, 1 H), 2.23 (q, 7=8.85 Hz, 1 H), 2.27-2.32 (m, 1 H), 2.59 (dd, 7=13.73, 7.02 Hz, 1 H), 2.92-2.97 (m, 1 H), 3.93 (s, 3 H), 4.12 (dd, 7=11.90,3.97 Hz, 1 H), 4.35 (d, 7=11.60 Hz, 1 H), 4.51 (dd, 7=10.38,7.02 Hz, 1 H), 4.61 (dd, 7=5.80, 3.05 Hz, 1 H), 4.80 (d, 7=4.27 Hz, 1 H), 4.88 (d, 7=3.96 Hz, 1 H), 5.12 (dd, 7=10.38, 1.83 Hz, 1 H), 5.29 (dd, 7=17.24, 1.37 Hz, 1 H), 5.73-5.78 (m, 1 H), 5.84 (t, 7=3.66 Hz, 1 H), 7.15 (dd, 7=8.85,2.44 Hz, 1 H), 7.19 (d, 7=2.44 Hz, 1 H), 7.25 (d, 7=6.10 Hz, 1 H), 7.88 (d, 7=6.10 Hz, 1 H), 8.06 (d, 7=9.16 Hz, 1 H); LC-MS (retention time: 1.49 min.), MS
Compound 56 was prepared by the same method as Compound 55 with the following modifications:
Modifications: Cyclopentanecarbonyl chloride was used as a starting material to give Compound 56 (18.0 mg, 24% yield): 'H NMR(CD3OD, 500 MHz) 5 1.00-1.03 (m,
1 H), 1.05 (s, 9 H), 1.06-1.10 (m, 2H), 1.24-1.27 (m, 2H), 1.25-1.61 (m,9H), 1.80-1.83 (m, 1 H), 1.88 (dd, 7=8.24, 5.49 Hz, 1 H), 2.22-2.31 (m, 2 H), 2.58-2.65 (m, 2 H), 2.93-2.98 (m, 1 H), 3.92 (s, 3 H), 4.10 (dd, 7=11.90,3.66 Hz, 1 H), 4.35 (d, 7=11.91 Hz, 1 H), 4.52 (dd, 7=10.38,7.02 Hz, 1 H), 4.65 (d, 7=9.46 Hz, 1 H), 4.80 (d, 7=5.49 Hz, 1 H), 4.88 (d, 7=5.19 Hz, 1 H), 5.13 (dd, 7=10.37, 1.83 Hz, 1 H), 5.30 (dd, 7=16.80,1.22 Hz, 1 H), 5.73-5.78 (m, 1 H), 5.84 (t, 7=4.27 Hz, 1 H), 7.11 (dd, 7=9.16, 2.44 Hz, 1 H), 7.19 (d, 7=2.44 Hz, 1 H), 7.25 (d, 7=5.80 Hz, 1 H), 7.88 (d, 7=6.10 Hz, 1 H), 8.05 (d, 7=9.16 Hz, 1 H)); LC-MS (retention time: 1.71 min.), MS m/z 7100VHT).
Compound 57 was prepared by the same method as Compound 55 with the following modifications:
Modifications: 2-Ethylbutyryl chloride was used as a starting material to give Compound 57 (20.7 mg, 27% yield): 'H NMR(CD3OD, 500 MHz) 6 0.66 (t, 7=7.32 Hz, 3 H), 0.85 (t, 7=7.32 Hz, 3 H), 1.02-1.05 (m, 1 H), 1.07 (s, 9 H), 1.10-1.12 (m, 1 H), 1.24-1.33 (m, 4 H), 1.36-1.39 (m, 1 H), 1.43 (dd, 7=9.46, 5.19 Hz, 1 H), 1.48-1.51 (m, 1 H), 1.88 (dd, 7=8.24,5.19 Hz, 1 H), 2.12-2.14 (m, 1 H), 2.22 (q, 7=8.85 Hz, 1 H), 2.26-2.30 (m, 1 H), 2.59 (dd, 7=13.73, 6.71 Hz, 1 H), 2.94-2.97 (m, 1 H), 3.92 (s, 3H), 4.11 (dd, 7=11.90,3.66 Hz, 1 H), 4.40 (d, 7=11.90 Hz, 1 H), 4.50 (dd, 7=10.68, 7.02 Hz, 1 H), 4.75 (d, 7=9.46 Hz, 1 H), 4.81 (d, 7=9.16 Hz, 1 H), 4.89 (d, 7=9.16 Hz, 1 H), 5.12 (dd, 7=10.38,1.53 Hz, 1 H), 5.29 (dd, 7=17.09, 1.22 Hz, 1 H),
5.72-5.79 (m, 1 H), 5.85 (t, 7=3.66 Hz, 1 H), 7.08 (dd, 7=9.16, 2.44 Hz, 1 H), 7.19 (d, 7=2.44 Hz, 1 H), 7.25 (d, 7=5.80 Hz, 1 H), 7.88 (d, 7=6.10 Hz, 1H), 7.98 (d, 7=9.16 Hz, 1 H), 8.02 (d, 7=9.16 Hz, 1 H); LC-MS (retention time: 1.73 min.), MS m/z 712 (MET).
solution mixture of product from step 1 of example 55 (70.0 mg, 0.108 mmol), DEEA (41.8 mg, 0.323 mmol) and cyclopropaneacetic acid (16.2 mg, 0.162 mmol) in DCM (2 mL) was added HATU (61.6 mg, 0.162 mmol). After stirring the reaction mixture at it overnight, it was washed with 5% aqueous NaHCOs (1 mL). The
washed with 5% aqueous citric acid (2 mL), brine , dried over MgSC>4 and concentrated. Product was purified by reversed phase prep-HPLC to give Compound 58 (21.9 mg, 29% yield): 'H NMR(CD3OD, 500 MHz) 5 0.11-0.14 (m, 2 H), 0.43-0.47 (m, 2 H), 0.87-0.09 (m, 1 H), 1.01-1.04 (m, 1 H), 1.07 (s, 9 H), 1.09-1.12 (m, 1 H), 1.23-1.27 (m, 2 H), 1.45 (dd, 7=9.46, 5.49 Hz, 1 H), 1.88 (dd, 7=8.24, 5.49 Hz, 1 H), 2.03 (d, 7=7.32 Hz, 2 H), 2.23 (q, 7=8.75 Hz, 1 H), 2.27-2.31 (m, 1 H), 2.59 (dd, 7=13.73, 7.02 Hz, 1 H), 2.92-2.96 (m, 1 H), 3.93 (m, 3 H), 4.13 (dd, 7=11.90, 3.97 Hz, 1 H), 4.34 (d, 7=11.90 Hz, 1 H), 4.53 (dd, 7=10.38, 7.02 Hz, 1 H), 4.66 (d, 7=9.46 Hz, 1 H), 4.81 (d, 7=6.10 Hz, 1 H), 4.89 (d, 7=6.10 Hz, 1 H), 5.12 (dd, 7=10.37, 1.52 Hz, 1 H), 5.30 (dd, 7=17.09, 1.22 Hz, 1 H), 5.75-5.81 (m, 1 H), 5.86 (s, 1 H), 7.12 (dd, 7=9.16, 2.44 Hz, 1 H), 7.19 (d, 7=2.44 Hz, 1 H), 7.81 (d, 7=9.46 Hz, 1H), 7.89 (d, 7=5.80 Hz, 1 H), 8.06 (d, 7=9.16 Hz, 1 H); LC-MS (retention time: 1.63 min.), MS m/z 696 (MH+).
Compound 59 was prepared by the same method as Compound 58 with the following modifications:
Modifications: Methoxyacetic acid was used as a starting material to give Compound 59 (23.5 mg, 32% yield): 'HNMR(CD3OD, 500 MHz) 6 10.99-1.04 (m, 2 H), 1.06 (s, 9 H), 1.09-1.12 (m, 1 H), 1.22-1.27 (m, 2 H), 1.45 (dd, 7=9.46, 5.49 Hz, 1 H), 1.88 (dd, 7=8.24,5.49 Hz, 1 H), 2.22 (q, 7=8.85 Hz, 1 H), 2.29-2.32 (m, 1 H), 2.60 (dd, 7=13.89,6.87 Hz, 1 H), 2.92-2.97 (m, 1 H), 3.35 (s, 3 H), 3.70 (d, 7=15.26 Hz, 1 H), 3.84 (d, 7=15.26 Hz, 1 H), 3.93 (s, 3 H), 4.13 (dd, 7=11.90, 3.97 Hz, 1 H), 4.32 (d, 7=11.60 Hz, 1 H), 4.54 (dd, 7=10.38,7.02 Hz, 1 H), 4.65 (s, 1 H), 4.81 (d, 7=7.32 Hz, 1 H), 4.89 (d, 7=7.32 Hz, 1 H), 5.12 (d, 7=10.38 Hz, 1 H), 5.30 (d, 7=16.79 Hz, 1 H), 5.74-5.81 (m, 1 H), 5.86 (t, 7=3.36 Hz, 1 H), 7.14 (dd, 7=9.00, 2.59 Hz, 1 H), 7.19 (d, 7=2.44 Hz, 1 H), 7.26 (d, 7=6.10 Hz, 1 H), 7.89 (d, 7=6.10 Hz, 1 H), 8.04 (d, 7=9.16 Hz, 1 H); LC-MS (retention time: 1.54 min.), MS m/z 686 (MH+).
Example 60: Preparation of Compond 60
Compound 60 was prepared by the same method as Compound 58 with the following modifications:
Modifications: (+)-Methoxyacetic acid was used as a starting material to give Compound 60 (23.8 mg, 27% yield): 1HNMR (CD3OD, 500 MHz) 5 0.78 (d, 7=7.02 Hz, 3 H), 0.83-0.88 (m, 2 H), 0.92 (t, 7=7.17 Hz, 6 H), 0.94-0.98 (m, 1 H), 1.00-1.03 (m, 2 H), 1.06 (s, 9 H), 1.07-1.ll(m, 1 H), 1.22-1.26 (m, 2 H), 1.31-1.36 (m, 2 H), 1.45 (dd, 7=9.46, 5.49 Hz, 1 H), 1.63-1.68 (m, 2 H), 1.89 (dd, 7=8.09, 5.34 Hz, 1 H), 2.01-2.04 (m, 1 H), 2.17-2.21 (m, 1 H), 2.24 (q, 7=9.00 Hz, 2 H), 2.28-2.33 (m, 1 H), 2.60 (dd, 7=13.73, 7.02 Hz, 1 H), 2.93-2.98 (m, 1 H), 3.15-3.20 (m, 1 H), 3.77 (d, 7=15.26 Hz, 1 H), 3.87 (d, 7=15.26 Hz, 1 H), 3.93 (s, 3 H), 4.12 (dd, 7=11.90, 3.66 Hz, 1 H), 4.32 (d, 7=11.90 Hz, 1 H), 4.56 (dd, 7=10.38, 7.02 Hz, 1 H), 4.65 (d, 7=9.77 Hz, 1 H), 4.81 (d, 7=5.80 Hz, 1 H), 4.89 (d, 7=5.80 Hz, 1 H), 5.13 (dd, 7=10.22, 1.68 Hz, 1 H), 5.30 (dd, 7=17.09, 1.53 Hz, 1 H), 5.75-5.79 (m, 1 H), 5.85 (t, 7=3.66 Hz, 1 H), 7.14 (dd, 7=9.16, 2.44 Hz, 1 H), 7.19 (d, 7=2.44 Hz, 1 H), 7.26 (d, 7=5.80 Hz, 1 H), 7.52 (d, 7=9.77 Hz, 1 H), 7.89 (d, 7=5.80 Hz, 1 H), 8.03 (d, 7=9.16 Hz, 1 H); LC-MS (retention time: 2.043 min.), MS m/z 810 (MH+).
Compound 61 was prepared by the same method as Compound 58 with the following modifications:
Modifications: (-)-Methoxyacetic acid was used as a starting material to give Compound 61 (26.4mg, 30% yield): 'HNMR^DsOD, 500 MHz) 5 0.78 (d, 7=7.02 Hz, 3 H), 0.82-084 (m, 1 H), 0.88 (dd, 7=8.39, 3.81 Hz, 1 H), 0.91 (d, 7=7.01 Hz, 3 H), 0.92 (d, 7=6.41 Hz, 3 H), 0.94-0.99 (m, 2 H), 1.00-1.03 (m, 2 H), 1.06 (s, 9 H), 1.08-1.10 (m, 1 H), 1.23-1.26 (m, 2 H), 1.30-1.37 (m, 2 H), 1.44 (dd, 7=9.61, 5.34 Hz, 1 H), 1.62-1.68 (m, 2 H), 1.89 (dd, 7=8.24,5.49 Hz, 1 H), 1.98-2.02 (m, 1 H), 2.13-2.16 (m, 1 H), 2.24 (q, 7=8.85 Hz, 1 H), 2.28-2.32 (m, 1 H), 2.60 (dd, 7=13.73, 7.02 Hz, 1 H), 2.94-2.98 (m, 1 H), 3.08-3.13 (m, 1 H), 3.63 (d, 7=15.56 Hz, 1 H), 3.93 (S, 3H), 4.11 (dd, 7=12.05, 3.81 Hz, 1 H), 4.32 (d, 7=11.90 Hz, 1 H), 4.56 (dd, 7=10.38,7.02 Hz, 1 H), 4.62 (d, 7=9.46 Hz, 1 H), 4.81 (d, 7=6.41 Hz, 1 H), 4.89 (d, 7=6.72 Hz, 1 H), 5.13 (dd, 7=10.38,1.83 Hz, 1 H), 5.30 (dd, 7=17.09, 1.23 Hz, 1 H), 5.76-5.80 (m, 1 H), 5.85 (t, 7=3.51 Hz, 1 H), 7.14 (dd, 7=9.00, 2.59 Hz, 1 H), 7.20 (d, 7=2.44 Hz, 1 H), 7.26 (d, 7=5.80 Hz, 1 H), 7.52 (d, 7=9.77 Hz, 1 H), 7.89 (d, 7=6.10 Hz, 1 H), 8.04 (d, 7=9.16 Hz, 1 H); LC-MS (retention time: 2.05 min.), MS m/z 810 (MH*).
Example 62: Preparation of Compound 62
Compound 62 was prepared by the same method as Compound 58 with the following modifications:
Modifications: Bicyclo[l.l.l]pentane-2-carboxylic acid was used as a starting material to give Compound 62 (35.1, 45% yield): 'HNMR^DaOD, 500 MHz) S 1.03 (d, 7=5.49 Hz, 1 H), 1.06 (s, 9 H), 1.08-1.11 (m, 3 H), 1.23-1.29 (m, 3 H), 1.37 (dd, 7=7.02, 3.36 Hz, 13 H), 1.46 (dd, 7=9.46, 5.19 Hz, 1 H), 1.65 (dd, 7=9.77, 2.14 Hz, 1 H), 1.69 (d, 7=2.14 Hz, 1 H), 1.72 (dd, 7=7.32, 3.05 Hz, 1 H), 1.88 (dd, 7=8.09, D.^4 nz, i ti), /.!/ (.act, j=y./i, 3.10 nz, i a.), z.zj
Compound 63 was prepared by the same method as Compound 58 with the following modifications:
Modifications: pyrazine-2-carboxylic acid was used as a starting material to give Compound 63 (42.3,54% yield): 'HNMR (CD3OD, 500 MHz) S 1.00-1.04 (m, 3 H), 1.05-1.09 (m, 1 H), 1.10 (s, 9 H), 1.15 (s, 1 H), 1.18-1.22 (m, 2 H), 1.43 (dd, 7=9.46, 5.49 Hz, 1 H), 1.88 (dd, 7=7.93, 5.49 Hz, 1 H), 2.17 (q, 7=8.65 Hz, 1 H), 2.37-2.42 (m, 1 H), 2.64 (dd, 7=13.73, 7.32 Hz, 1 H), 2.91-2.95 (m, 1 H), 3.88 (s, 3 H), 3.93 (d, 7=3.35 Hz, 1 H), 4.13 (dd, 7=11.90,3.36 Hz, 1 H), 4.46 (d, 7=11.90 Hz, 1 H), 4.61 (dd, 7=10.07,7.32 Hz, 1 H), 4.76 (s, 1 H), 4.80 (d, 7=7.63 Hz, 1 H), 4.88 (d, 7=7.93 Hz, 1 H), 5.09 (d, 7=10.38 Hz, 1 H), 5.27 (d, 7=17.09 Hz, 1 H), 5.77-5.83 (m, 1 H), 5.85 (s, 1 H), 6.85 (dd, 7=9.16, 2.44 Hz, 1 H), 7.08 (d, 7=2.14 Hz, 1 H), 7.23 (d, 7=5.80 Hz, 1 H), 7.87 (d, 7=8.85 Hz, 1 H), 7.90 (d, 7=6.10 Hz, 1 H), 8.57 (d, 7=1.53 Hz, 1 H), 8.73 (d, 7=2.44 Hz, 1 H), 8.81 (s, 1 H).
Example 64: Preparation of Compound 64
To a solution mixture of product from step 1 of example 55 (70.0 mg, 0.108 mmol) and DIEA (41.8 mg, 0.323 mmol) in DCM (2 mJL) was added benzyl chloroformate (55.1 mg, 0.323 mmol). After stirring at rt for 14 h, solvent was removed and product was purified by reversed phase prep-HPLC to give Compound 64 (26.9 mg, 31% yield): !HNMR (CD3OD, 500 MHz) 8 1.00 (d, 7=2.14 Hz, 1 H), 1.02 (d, 7=5.80 Hz, 1 H), 1.04 (s, 9 H), 1.08-1.14 (m, 1 H), 1.16 (d, .7=6.71 Hz, 1 H), 1.18-1.22 (m, 2 H), 1.43 (dd, 7=9.46,5.19 Hz, 1 H), 1.87 (dd, 7=8.09, 5.34 Hz, 1 H), 2.17-2.22 (m, 1 H), 2.30-2.35 (m, 1 H), 2.62 (dd, 7=13.73, 7.02 Hz, 1 H), 2.90-2.95 (m, 1 H), 3.88 (s, 3 H), 4.08 (dd, 7=11.90,3.66 Hz, 1 H), 4.31 (s, 1 H), 4.43 (d, 7=11.60 Hz, 1 H), 4.55 (dd, 7=10.07,7.32 Hz, 1 H), 4.74 (d, 7=12.21 Hz, 1 H), 4.81 (d, 7=6.10 Hz, 1 H), 4.89 (d, 7=5.79 Hz, 1 H), 5.10 (d, 7=9.16 Hz, 1 H), 5.16 (s, 1 H), 5.28 (d, 7=17.09 Hz, 1 H), 5.75-5.81 (m, 1 H), 5.83 (s, 1 H), 7.07 (dd, 7=9.16, 2.44 Hz, 1 H), 7.17 (d, 7=2.44 Hz, 1 H), 7.20 (d, 7=7.32 Hz, 2 H), 7.25 (t, 7=5.65 Hz, 3 H), 7.30-7.33 (m, 1 H), 7.34-7.37 (m, 2 H), 7.89 (d, 7=5.80 Hz, 1 H), 8.07 (d, 7=9.16 Hz, 1 H); LC-MS (retention time: 1.79 min.), MS m/z 748 (MH+).
Compound 65 was prepared by the same method as Compound 64 with the following modifications:
Example 65: Preparation of Compound 65
Modifications: (+)-Methyl chloroformate was used as a starting material to give Compound 65 (28.8 mg, 36% yield): *H NMR(CD3OD, 500 MHz) 5 0.72 (d, 7=6.71 Hz, 3 H), 0.80 (t, 7=5.80 Hz, 6H), 0.87 (d, 7=7.02 Hz, 4 H), 0.90-0.95 (m, 6 H), 0.98-1.02 (m, 5 H), 1.05 (s, 9 H), 1.07-1.12 (m, 2 H), 1.18-1.23 (m, 2 H), 1.32-1.38 (m, 3 H), 1.41 (dd, 7=9.46, 5.19 Hz, 1 H), 1.46-1.48 (m, 1 H), 1.63-1.71 (m, 5 H), 1.85 (dd, 7=7.93, 5.49 Hz, 1 H), 1.89-1.93 (m, 1 H), 2.00-2.03 (m, 1 H), 2.15 (q, 7=8.70 Hz, 1 H), 2.34-2.38 (m, 1 H), 2.61 (dd, 7=13.73, 7.33 Hz, 1 H), 2.89-2.93 (m, 1 H), 3.73 (s, 2 H), 3.92 (s, 3 H), 4.10 (dd, 7=11.60, 3.36 Hz, 1 H), 4.33 (s, 1 H), 4.41 (d, 7=11.29 Hz, 1 H), 4.46-4.52 (m, 1 H), 4.54 (dd, 7=9.76, 7.90 Hz, 1 H), 4.81 (d, 7=5.80 Hz, 1 H), 4.89 (m, 1 H), 5.08 (d, 7=11.60 Hz, 1 H), 5.26 (d, 7=17.09 Hz, 1 H), 5.77-5.81 (m, 1 H), 5.83 (d, 7=3.97 Hz, 1 H), 7.11 (dd, 7=11.29, 1.83 Hz, 1 H), 7.18 (d, 7=1.83 Hz, 1 H), 7.24 (d, 7=5.80 Hz, 1 H), 7.88 (d, 7=6.10 Hz, 1 H), 8.08 (d, 7=8.85 Hz, 1 H); LC-MS (retention time: 2.06 min.), MS m/z 796 (MH+).
Example 66: Preparation of Compound 66
Compound 66 was prepared by the same method as Compound 64 with the following modifications:
Modifications: (-)-Methyl chloroformate was used as a starting material to give Compound 66 (26.9 mg, 31% yield): 'H NMR(CD3OD, 500 MHz) 5 0.35 (d, 7=6.41 Hz, 1 H), 0.51 (d, 7=6.71 Hz, 2 H), 0.68 (d, 7=6.71 Hz, 1 H), 0.73 (d, 7=7.02
-0.98 (m, 10 H), 1.0-1.03 (m, 2H), 1.05 (s, 9 H), 1.09-1.18 (m, 3 H), 1.25-1.29 (m, 1 H), 1.3-1.41 (m, 3 H), 1.60-1.71 (m, 3H), 1.82-1.89 (m, 3 H), 2.00-2.04 (m, 7=2.14 Hz, 1 H), 2.10 (q, J=8.24 Hz, , 1 H), 2.39-2.43 (m, 1 H), 2.61 (dd, 7=14.04, 7.32 Hz, 1 H), 2.87-2.91 (m, 1 H), 3.73 (s, 1 H), 3.92 (s, 3 H), 4.13 (dd, 7=11.75, 3.51 Hz, 1 H), 4.22-4.27 (m, 2 H), 4.30 (s, 1 H), 4.39 (d, 7=11.90 Hz, 1 H), 4.48-4.55 (m, 1 H), 4.79 (d, 7=5.19 Hz, 1 H), 4.87 (d, 7=4.27 Hz, 1 H), 5.05
Compound 67 was prepared by the same method as Compound 64 with the following modifications:
Modifications: Di-tert-amyl dicarbonate was used as a starting material to give Compound 67 (35.3 mg, 41% yield): *H NMR(CD3OD, 500 MHz) 5 0.78 (t, 7=7.17 Hz, 3 H), 0.89-0.95 (m, 6 H), 1.04 (s, 9 H), 1.005-1.09 (m, 3 H), 1.15 (s, 1 H), 1.22 (d, 7=12.51 Hz, 6 H), 1.40 (s, 2 H), 1.42-1.46 (m, 1 H), 1.48 (s, 3 H), 1.56-1.66 (m, 2 H), 1.78 (q, 7=7.63 Hz, 1 H), 1.84 (q, 7=7.53 Hz, 1 H), 1.88 (d, 7=5.80 Hz, 1 H), 2.22 (d, 7=8.55 Hz, 1 H), 2.27-2.31 (m, 1 H), 2.61 (dd, 7=13.73, 7.02 Hz, 1 H), 2.91-2.96 (m, 1 H), 3.92 (s, 3 H), 4.08 (d, 7=12.21 Hz, 1 H), 4.26 (d, 7=9.16 Hz, 1 H), 4.42 (d,
7=11.29 Hz, 1 H), 4.52 (t, 7=7.93 Hz, 1 H), 5.12 (d, 7=10.07 Hz, 1 H), 5.29 (d, 7=17.09 Hz, 1 H), 5.73-5.80 (m, 1 H), 5.84 (s, 1 H), 6.57 (d, 7=8.85 Hz, 1 H), 7.09 (d, 7=8.54 Hz, 1 H), 7.18 (s, 1 H), 7.25 (d, 7=5.80 Hz, 1 H), 7.89 (d, 7=5.80 Hz, 1 H), 8.08 (d, 7=9.16 Hz, 1 H); LC-MS (retention time: 1.82 min.), MS m/z 728 (MH+).
Compound 68 was prepared by the same method as Compound 64 with the following modifications:
Modifications: 2, 2,2-Trichloro- 1,1 -dimethyl chloroformate was used as a starting material to give Compound 68 (30.5mg, 37% yield): !H NMR (CD3OD, 500 MHz) 6 0.99 (s, 9 H), 1.04 (s, 6 H), 1.08-1.09 (m, 3H), 1.23-1.26 (m, 3 H), 1.44 (s, 2 H), 1.46 (d, 7=5.80 Hz, 1 H), 1.71 (s, 2 H), 2.23-2.33 (m, 2 H), 2.60-2.64 (m, 1 H), 2.93-2.96 (m, 1 H), 3.70 (m, 1 H), 3.71 (s, 3 H), 3.93 (s, 3 H), 4.04-4.06 (m, 2 H), 4.27 (d, 7=9.16 Hz, 1 H), 4.41 (d, 7=11.60 Hz, 1 H), 4.57 (d, 7=10.98, 6.11 Hz, 1 H), 5.14 (d, 7=12.21 Hz, 1 H), 5.32 (d, 7=17.70 Hz, 1 H), 5.75-5.80 (m, 1 H), 5.84 (s, 1 H), 7.10 (dd, 7=9.16, 2.44 Hz, 1 H), 7.19 (d, 7=2.44 Hz, 1 H), 7.26 (d, 7=6.10 Hz, 1 H), 7.90 (d, 7=5.80 Hz, 1 H), 8.07 (d, 7=9.16 Hz, 1 H) ); LC-MS (retention time: 1.95 min.), MS m/z 816(MH+).
solution mixture of product from step 1 of example 55 (102 mg, 0.149 mmol) and DIEA (48.2, 0.373 mmol) in THF (2 mL) was added N,N'-dissucinimidyl carbonate (57.1 mg, 0.223 mmol). The resulting suspension was irradiated in a microwave to 80 °C for 15 min. Then was added a slurry solution of sodium 1-methyl cyclopentoxide which was prepared by treating a 0 °C solution of 1-methyl cyclopentanol (149.2 mg, 1.49 mmol) in THF (1 mL) with NaH (60% in oil, 59.6 mg, 1.49 mmol) for 15 min at it. After stirring at it 15 min, thee reaction was quenched with saturated aqueous ammonium chloride (3 mL) and extracted with EtOAc (10 mL). The organic layer was then passed through a celite hydromatrix column, uuuuciiuaicu aiiu puiiucu uy jcvciscu pnasc picp-nr.1^ iu give Cuuipuuuu oy (S+y.v mg, 44%): 'H NMR(CD3OD, 500 MHz) 5 0.95-0.98 (m, 3 H), 0.99-1.01 (m, 7=12.51 Hz, 1 H), 1.03 (s, 9 H), 1.14-1.18 (m, 2 H), 1.30 (s, 3 H), 1.40-1.47 (m, 3 H), 1.50-1.56 (m, 3 H), 1.60-1.64 (m, 1 H), 1.76-1.81 (m, 1 H), 1.83-1.85 (m, 1 H), 2.10-2.19 (m, 1 H), 2.36-2.43 (m, 1 H), 2.63 (dd, 7=14.50, 7.17 Hz, 1 H), 2.86-2.90 (m, 1 H), 3.92 (s, 3 H), 4.09 (d, 7=12.51 Hz, 1 H), 4.25 (d, 7=1.53 Hz, 1 H), 4.43 (d, 7=10.99 Hz, 1 H), 4.51-4.55 (m, 1 H), 5.06 (d, 7=11.60 Hz, 1 H), 5.23 (d, 7=16.78 Hz, 1 H), 5.80-5.85 (m, 7=12.67, 12.67 Hz, 2 H), 7.09 (d, 7=8.55 Hz, 1 H), 7.17 (s, 1 H), 7.24 (d, 7=5.49 Hz, 1 H), 8.07 (d, 7=9.16 Hz, 1 H) ); LC-MS (retention time: 1.87 min.),MSm/z 740(MH+).
Compound 70 was prepared by the same method as Compound 69 with the following modifications:
Modifications: Cyclopentanol was used as a starting material to give Compound 70 (85.1 mg, 40% yield): 'H NMR(CD3OD, 500 MHz) 8 0.98 (s, 1 H), 1.00 (d, 7=4.88 Hz, 1 H), 1.03 (s, 9 H), 1.06-110 (m, 2 H), 1.24-1.29 (m, 3 H), 1.36-1.40 (m, 2 H), 1.44 (dd, 7=9.31,5.04 Hz, 2 H), 1.57-1.62 (m, 5 H), 1.69-1.73 (m, 2 H), 1.88 (dd, 7=8.09, 5.65 Hz, 1 H), 2.22-29 (m, 2 H), 2.59-2.62 (m, 1 H), 2.92-2.96 (m, 1 H), 3.93 (s, 3 H), 4.07 (dd, 7=10.99,2.44 Hz, 1 H), 4.29 (s? 1 H), 4.42 (dd, 7=12.51,1.53 Hz, 1 H), 4.55 (dd, 7=9.77,7.93 Hz, 1 H), 4.68-4.71 (m, 1 H), 4.81 (d, 7=8.55 Hz, 1 H), 4.89 (d, 7=9.46 Hz, 1 H), 5.13 (d, 7=10.68 Hz, 1 H), 5.30 (d, 7=16.48 Hz, 1 H), 5.73-5.78 (m, 1 H), 5.84 (s, 1 H), 7.12 (dd, 7=9.15,1.83 Hz, 1 H), 7.20 (d, 7=2.14 Hz, 1 H), 7.27 (d, 7=5.80 Hz, IH), 7.89 (d, 7=5.80 Hz, 1 H), 8.09 (d, 7=8.85 Hz, 1 H); LC-MS (retention time: 1.81 min.), MS m/z 726 (MH4).
Compound 71 was prepared by the same method as Compound 69 with the following modifications:
Modifications: Cyclobutanol was used as a starting material to give Compound 71 (16.2 mg, 39% yield): 'H NMR(CD3OD, 500 MHz) 8 0.97 (s, 3 H), 1.03 (s, 9 H),
2.08 (m, 1 H), 2.15-2.21 (m, 1 H), 2.30-2.36 (m, 1 H), 2.49-2.54 (m, 0.4 H), 2.59-2.67 (m, 0.6 H), 2.90-2.94 (m, 1 H), 3.93 (s, 3H), 4.09 (dd, 7=8.09, 4.73 Hz, 1 H), 4.20 (d, 7=10.68 Hz, 0.4 H), 4.38 (d, 7=10.68 Hz, 0.6 H), 4.46 (dd, 7=10.22,7.17 Hz, 0.4 H), 4.48-4.56 (m, 1 H), 5.07-5.11 (m, 1 H), 5.26 (d, 7=17.24 Hz, 0.4 H), 5.28 (d, 7=17.24 Hz, 0.6 H), 5.71-5.79 (m, 1 H),5.84 (s, IH), 7.07 (dd, 7=8.39, 2.90 Hz, 1 H), 7.14 (d, 7=2.14 Hz, 1 H), 7.20 (d, 7=2.44 Hz, 1 H), 7.25 (d, 7=5.80 Hz, 1 H), 7.59 (d, 7=5.80 Hz, 1 H), 7.88 (m, 1 H), 8.00 (d, 7=9.16 Hz, 0.4 H), 8.07 (d, 7=8.85 Hz, 0.6 H)); LC-MS (retention time: 1.25 min.), MS m/z 712 (MH*).
Compound 72 was prepared by the same method as Compound 69 with the following modifications:
Modifications: 2-Phenyl-2-propanol was used as a starting material to give Compound 72 (19.0 mg, 42% yield): 'H NMR(CD3OD, 500 MHz) 5 0.97 (m, 1 H), 1.03 (s, 9 H), 1.06-1.09 (m, 3 H), 1.16-1.22 (m, 4 H), 1.41-1.44 (m, 1 H), 1.57 (s, 3 H), 1.86 (t, .7=7.80 Hz, IH), 2.14-2.18 (m, 1 H), 2.30-2.35 (m, 1 H), 2.57-2.61 (m, 1 H), 2.90-2.94 (m, 1 H), 3.92 (d, .7=4.27 Hz, 1 H), 3.94 (s, 3 H), 4.04 (dd, 7=10.99, 3.66 Hz, 1 H), 4.18 (s, 1 H), 4.24 (d, 7=10.99 Hz, 1 H), 4.52 (s, 1 H), 5.09 (d, 7=10.07 Hz, 1 H), 5.26 (d, 7=14.95 Hz, 1 H), 5.78-5.82 (m, 2 H), 7.07-7.12 (m, 2 H), 7.16-7.20 (m, 3 H), 7.23 (d, 7=5.19 Hz, 1 H), 7.29 (d, 7=7.02 Hz, 2 H), 7.84 (d, 7=5.80 Hz, 1 H), 8.03 (d, 7=9.46 Hz, 1 H) ); LC-MS (retention time: 1.84 min.), MS m/z 776 (MET).
Compound 73 was prepared by the same method as Compound 69 with the following modifications:
Modifications: 4-(Trifluoromethyl)phenyl dimethyl carbinol was used as a starting material to give Compound 73 (22.1 mg, 45% yield): 'H NMR(CD3OD, 500 MHz) 6 0.91 (s, 1 H), 0.97-1.00 (m, 7=15.56 Hz, 4 H), 1.04 (s, 9 H), 1.07-1.10 (m, 2 H), 1.16-1.20 (m, 3 H), 1.30-1.31 (m, 1 H), 1.41 (dd, 7=9.61, 5.34 Hz, 1 H), 1.55 (d, .7=7.32 Hz, 6 H), 1.83-1.87 (m, 1 H), 2.11-2.14 (m, 1 H), 2.34-2.39 (m, 1 H), 2.57-2.62 (m, 1 H), 2.89-2.92 (m, 7=11.60, 4.27 Hz, 1 H), 3.92 (s, 2 H), 3.94 (s, 3 H), 4.02-4.05 (m, 1 H), 4.17 (s, 1 H), 4.26 (d, 7=11.90 Hz, 1 H), 4.53 (t, 7=8.85 Hz, 1 H), 5.07 (d, 7=10.07 Hz, 1 H), 5.24 (d, 7=18.01 Hz, 1 H), 5.78-5.83 (m, 2 H), 7.08 (d, 7=7.02 Hz, 1 H), 7.19 (s, 1 H), 7.22 (d, 7=5.80 Hz, 1 H), 7.45 (dd, 7=13.74,7.63 Hz, 3 H), 7.60 (d, 7=6.41 Hz, 1 H), 7.67 (d, 7=7.63 Hz, 1 H), 7.84 (d, 7=5.80 Hz, 1 H), 8.02 (d, 7=8.54 Hz, 1 H)); LC-MS (retention time: 1.92 min.), MS m/z 844 (MH+).
To a solution mixture of the product from step 1 of example 55 (70.0 mg, 0.108 mmol) and DEA (41.8 mg, 0.323 mmol) in DCM (2 mL) was added t-butylisocyanate (32.0, 0.323 mmol). After stirring at rt overnight, the reaction was concentrated and purified by re versed-phase prep-HPLC to give Compound 74 (42.3 mg, 55% yield): 'H NMR(CD3OD, 500 MHz) 5 0.96-1.00 (m, 1 H) 1.04 (s, 9 H) 1.08-1.10 (m, 3 H) 1.19 (s, 9 H) 1.22-1.31 (m, 2 H) 1.30 (m, 1 H) 1.41 (dd, 7=9.46,
5.49 Hz, 1 H) 1.87 (dd, 7=8.24, 5.49 Hz, 1 H) 2.20-2.29 (m, 2 H) 2.61 (dd, 7=14.04, 6.72 Hz, 1 H) 2.92-2.97 (m, 1 H) 3.92 (s, 3 H) 4.08 (dd, 7=11.60, 3.97 Hz, 1 H) 4.36 (s, 1 H) 4.47-4.52 (m, 2 H) 4.81 (d, 7=3.36 Hz, 1 H) 4.88 (d, 7=8.85 Hz, 1 H) 5.11 (dd, 7=10.22, 1.68 Hz, 1 H) 5.28 (dd, 7=17.09, 1.53 Hz, 1 H) 5.72-5.76 (m, 1 H) 5.85 (s, 1 H) 7.08 (dd, 7=9.16,2.44 Hz, 1 H) 7.18 (d, 7=2.14 Hz, 1 H) 7.24 (d, .7=5.80 Hz, 1 H) 7.88 (d, 7=6.10 Hz, 1 H) 8.12 (d, 7=9.16 Hz, 1 H); LC-MS (retention time: 1.70 min.), MS m/z 713 (MH+).
Compound 75 was prepared by the same method as Compound 74 with the following modifications:
Modifications: Cyclopentyl isocyanate was used as a starting material to give Compound 75 (38.5 mg, 49%): 'H NMR(CD3OD, 500 MHz) 8 0.92 (d, J=7.63 Hz, 1 H) 0.96 (s, 9 H) 0.98-1.02 (m, 1 H) 1.05 (s, 9 H) 1.07-1.10 (m, 2 H) 1.21-1.25 (m, 3 H) 1.28-1.34 (m, IH) 1.36-1.55 (m, 8 H) 1.58-1.65 (m, 13 H) 1.81 (m, 1 H) 1.88 (m, 6 H) 2.23 (dd, 7=18.01, 8.85 Hz, 1 H) 2.29 (m, 1 H) 2.59 (dd, 7=13.73, 7.02 Hz, 1 H) 2.94 (m, 1 H) 3.27 (d, 7=1.83 Hz, 1 H) 3.35 (d, 7=1.53 Hz, 1 H) 3.75 (m, 1 H) 3.92 (s, 3 H) 3.95 (d, 7=6.41 Hz, 1 H) 3.97 (s, 1 H) 4.09 (m, 2 H) 4.40 (s, 1 H) 4.45 (d, 7=11.90 Hz, 1 H) 4.52 (dd, 7=10.07, 7.02 Hz, 1 H) 4.81 (d, 7=7.02 Hz, 1 H) 4.89 (d, 7=7.02 Hz, 1 H) 5.11 (m, 1 H) 5.29 (d, 7=17.40 Hz, 1 H) 5.75 (m, 1 H) 5.85 (s, 1 H) 7.11 (dd, 7=9.16, 2.44 Hz, 1 H) 7.18 (d, 7=2.44 Hz, 1 H) 7.25 (d, 7=5.80 Hz, 1 H)
7.88 (d, 7=6.10 Hz, 1 H) 7.95 (m, 1 H) 8.12 (d, 7=9.16 Hz, 1 H) ); LC-MS (retention time: 1.67 min.), MS m/z 725 (MH*).
To a solution mixture of the product from step 1 of example 55 (70 mg, 0.102 mmol) and DEA (33.0 mg, 0.255 mmol) in THF (2 mL) was added N,N'-dissucinimidyl carbonate (39.2 mg, 0.153 mmol). The resulting suspension was irradiated in a microwave to 80 °C for 15 min. Then it was treated with tert-amylamine (88.9 mg,
reversed phase prep-HPLC to give Compound 76 (51 mg, 69%): 'H NMR (CD3OD, 500 MHz) 8 0.76 (t, 7=7.48 Hz, 4 H), 0.97 (s, 1 H), 1.04 (s, 9 H), 1.13 (s, 6 H), 1.22-1.25 (m, 2 H), 1.41 (dd, 7=9.61, 5.34 Hz, 1 H), 1.53 (dd, 7=13.89, 7.48 Hz, 1 H), 1.58-1.62 (m, 1 H), 1.87 (dd, 7=7.93, 5.49 Hz, 1 H), 2.20 (q, 7=8.65 Hz, 1 H), 2.27-2.31 (m, 1 H), 2.60 (dd, 7=13.73, 7.32 Hz, 1 H), 2.92-2.96 (m, 1 H), 3.92 (s, 3 H), 4.08 (dd, 7=11.75, 3.81 Hz, 1 H), 4.36 (s, 1 H), 4.46 (d, 7=11.90 Hz, 1 H), 4.50 (dd, 7=10.22, 7.17 Hz, 1 H), 5.10 (dd, 7=10.22, 1.37 Hz, 1 H), 5.27 (dd, 7=16.94, 1.07 Hz, 1 H), 5.73-5.77 (m, 1 H), 5.84 (t, 7=3.51 Hz, 1 H), 7.09 (dd, 7=9.16, 2.44 Hz, 1 H), 7.18 (d, 7=2.44 Hz, 1 H), 7.24 (d, 7=5.80 Hz, 1 H), 7.88 (d, 7=6.10 Hz, 1 H), 8.11 (d, J=9.16 Hz, 1 H); LC-MS (retention time: 1.753 min.), MS m/z 727 (MH+).
Compound 77 was prepared by the same method as Compound 76 with the following modifications:
Modifications: tert-Butyl methylamine was used as a starting material to give Compound 77 (160.7 mg, 74% yield): 'HNMR^DaOD, 500 MHz) 5 0.96-1.10 (m, 1 H), 1.06 (s, 9 H), 1.08-1.12 (m, 7=5.80 Hz, 3 H), 1.26 (s, 9 H), 1.46 (dd, 7=9.46, 5.19 Hz, 1 H), 1.87 (dd, 7=7.93, 5.49 Hz, 1 H), 2.21 (q, 7=8.75 Hz, 1 H), 2.26-2.31 (m, 1 H), 2.57-2.62 (m, 1 H), 2.86 (s, 3 H), 2.91-2.95 (m, 1 H), 3.92 (s, 3 H), 4.09 (dd, 7=11.90, 3.66 Hz, 1 H), 4.43 (s, 1 H), 4.46 (d, 7=11.90 Hz, 1 H), 4.52 (dd, 7=10.68, 7.02 Hz, 1 H), 5.11 (dd, 7=10.22, 1.37 Hz, 1 H), 5.29 (d, 7=17.09 Hz, 1 H), 5.75-5.82 (m, 1 H), 5.86 (s, 1 H), 7.09 (dd, 7=9.16,2.14 Hz, 1 H), 7.18 (d, 7=2.44 Hz, 1 H), 7.24 (d, 7=5.80 Hz, 1 H), 7.88 (d, 7=5.80 Hz, 1 H), 8.09 (d, 7=8.85 Hz, 1 H)); LC-MS (retention time: 1.76 min.), MS rn/z 727 (MH*).
Compound 78 was prepared by the same method as Compound 76 with the following modifications:
Modifications: A^O-Dimethylhydroxylamine hydrochloride was used as a starting material to give Compound 78 (62.1 mg, 60% yield): 'HNMR^DaOD, 500 MHz) 8 0.99 (t, 7=6.10 Hz, 1 H), 1.07 (s, 11 H), 1.22-1.26 (m, 7=3.97 Hz, 2 H), 1.47 (dd, 7=9.46, 5.49 Hz, 1 H), 1.88 (dd, 7=8.24, 5.49 Hz, 1 H), 2.22 (d, 7=8.54 Hz, 1 H), 2.3-30-2.33 (m, 1 H), 2.60 (dd, 7=13.43, 7.02 Hz, 1 H), 2.92 (s, 3 H), 2.93-2.96 (m, 1 H), 3.66 (s, 3 H), 3.92 (s, 3 H), 4.12 (dd, 7-11.90, 3.66 Hz, 1 H), 4.34 (d, 7=12.21 Hz, 1 H), 4.44 (d, 7=9.46 Hz, 1 H), 4.54 (dd, 7=10.53, .6.87 Hz, 1 H), 5.12 (d, 7=10.38 Hz, 1 H), 5.30 (d, 7=17.09 Hz, 1 H), 5.75-5.83 (m, 1 H), 5.86 (t, 7=3.97 Hz, 1 H), 6.70 (d, 7=9.77 Hz, 1 H), 7.13 (dd, 7=9.16, 2.44 Hz, 1 H), 7.19 (d, 7=2.44 Hz, 1 H), 7.25 (d, 7=6.10 Hz, 1 H), 7.88 (d, 7=5.80 Hz, 1 H), 8.07 (d, 7=9.16 Hz, 1 H) ); LC-MS (retention time: 1.59 min.), MS m/z 701 (MET).
Compound 79 was prepared by the same method as Compound 76 with the following modifications:
Modifications: Diethylamine was used as a starting material to give Compound 79 (56.5 mg, 54% yield): 'HNMR(CD3OD, 500 MHz) 8 1.03 (q, 7=15.6 Hz, 4 H), 1.06 (d, 7=1.53 Hz, 9 H), 1.05-1.10 (m, 3 H), 1.13-1.23 (m, 4 H), 1.46 (dd, 7=9.46, 5.19 Hz, 1 H), 1.86 (dd, 7=7.93, 5.30 Hz, 1 H), 2.17 (q, 7=8.85 Hz, 1 H), 2.32-2.36 (m, 1 H), 2.60 (dd, 7=14.04, 7.32 Hz, 1 H), 2.89-2.93 (m, 1 H), 3.16-3.24 (m, 4 H), 3.92 (s, 3 H), 4.14 (dd, 7=11.90, 3.66 Hz, 1 H), 4.37 (d, 7=11.60 Hz, 1 H), 4.51-4.55 (m, 2 H), 5.09 (d, 7=10.07 Hz, 1 H), 5.27 (d, 7=17.09 Hz, 1 H), 5.55 (d, 7=9.46 Hz, 1 H), 5.79-5.84 (m, 1 H), 5.86 (s, 1 H), 7.11 (dd, 7=8.85,2.44 Hz, 1 H), 7.18 (d, 7=2.44 Hz, 1 H), 7.24 (d, 7=5.80 Hz, 1 H), 7.88 (d, 7=5.80 Hz, 1 H), 8.08 (d, 7=9.16 Hz, 1 H)); LC-MS (retention time: 1.68 min.), MS m/z 713 (MH+).
Compound 80 was prepared by the same method as Compound 76 with the following modifications:
Modifications: Saturated aqueous ammonium chloride was used as a starting material to give Compound 76 (12.2 mg, 32% yield): 'HNMR(CD3OD, 500 MHz) 8 1.00-1.03 (m, 3 H), 1.06 (s, 9 H), 1.20-1.25 (m, 2 H), 1.42 (dd, 7=9.31, 5.34 Hz, 1 H), 2.22 (d, 7=9.77 Hz, 1 H), 2.29-2.35 (m, 1 H), 2.59 (dd, 7=13.28, 6.87 Hz, 1 H), 2.92-2.96 (m, 1 H), 3.92 (s, 3 H), 4.14 (dd, 7=11.75, 4.12 Hz, 1 H), 4.38-4.43 (m, 1 H), 4.51 (dd, 7=9.92, 6.87 Hz, 1 H), 5.11 (d, 7=11.90 Hz, 1 H), 5.28 (d, 7=17.70 Hz, 1 H), 5.72-5.79 (m, 1 H), 5.84 (s, 1 H), 7.15 (d, 7=2.44 Hz, 1 H), 7.17 (d, 7=2.75 Hz, 1 H), 7.23 (d, 7=5.80 Hz, IH), 7.87 (d, 7=7.87 Hz, IH), 8.10 (d, 7=8.85 Hz, IH) ); LC-MS (retention time: 1.43 min.), MS m/z 657 (MH+).
Compound 81 was prepared by the same method as Compound 76 with the following modifications:
Modifications: tert-Octylamine was used as a starting material to give Compound 81 (16.1 mg, 48% yield): 'HNMR^DaOD, 500 MHz) 8 0.88 (s, 9 H), 1.00 (d, 7=9.77 Hz, 5 H), 1.04 (s, 9 H), 1.17 (s, 3 H), 1.18-1.20 (m, 1 H), 1.21 (s, 3 H), 1.35 (d, 7=2.44 Hz, 1 H), 1.40-1.43 (m, 1 H), 1.57 (d, 7=14.95 Hz, 1 H), 1.67 (d, 7=14.65 Hz, 1 H), 1.85 (dd, 7=8.09, 5.34 Hz, 1 H), 2.15 (d, 7=8.24. Hz, 1 H), 2.34-2.43 (m, 1 H), 2.60 (dd, 7=13.73, 7.02 Hz, 1 H), 2.89-2.93 (m, 1 H), 3.92 (s, 3 H), 4.13 (dd, 7=11.60, 3.97 Hz, 1 H), 4.38 (s, 1 H), 4.43 (d, 7=11.90 Hz, 1 H), 4.50 (dd, 7=9.77, 7.32 Hz, 1 H), 5.07 (d, 7=10.38 Hz, 1 H), 5.24 (d, 7=17.09 Hz, 1 H), 5.75-5.81 (m, 1 H), 5.84 (s, 1 H), 7.09 (dd, 7=9.16,2.44 Hz, 1 H), 7.17 (d, 7=2.44 Hz, 1 H), 7.23 (d, 7=5.80 Hz, 1 H), 7.88 (d, 7=5.80 Hz, 1 H), 8.10 (d, 7=9.16 Hz, 1 H) ); LC-MS (retention time: 1.92 min.), MS m/z 769 (MH+).
Compound 82 was prepared by the same method as Compound 76 with the following modifications:
Modifications: l-(4-fluorophenyl)-2-methyl-2-propylamine was used as a starting material to give Compound 82 (14.8 mg, 42% yield): 'HNMR (CD3OD, 500 MHz) 6 0.88 (s, 9 H), 1.00 (d, 7=9.46 Hz, 6 H), 1.04 (s, 9 H), 1.17 (s, 3 H), 1.21 (s, 3 H), 1.32-1.37 (m, 2 H), 1.39-1.43 (m, 1 H), 1.57 (d, 7=14.65 Hz, 1 H), 1.67 (d, 7=14.96 Hz, 1 H), 1.82-1.86 (m, 1 H), 2.15 (t, 7=9.46 Hz, 1 H), 2.33-2.43 (m, 2 H), 2.58-2.62
=IH.JU, 1.10 ru., i n), ^.oy-^.yj 111, i n.), j.y v&, J n.j, .^, vuu> J—LI-^U, 3.97 Hz, 1 H), 4.38 (s, 1 H), 4.43 (d, 7=12.82 Hz, 1 H), 4.49-4.52 (m, 1 H), 5.24 (d, 7=16.48 Hz, 1 H), 5.76-5.82 (m, 1 H), 5.83-5.85 (m, 1 H), 7.09 (dd, 7=9.00,2.59 Hz, 1 H), 7.17 (d, 7=2.14 Hz, 1 H), 7.23 (d, 7=5.80 Hz, 1 H), 7.88 (d, 7=5.80 Hz, 1 H), 8.10 (d, 7=9.16 Hz, 1 H)); LC-MS (retention time: 1.40 min.), MS m/z 807 (MH").
s Compound 76 with the following modifications:
Modifications: Cumylamine was used as a starting material to give Compound 83 (64.6 mg, 57% yield): 'HNMR (CD3OD, 500 MHz) 6 0.87-0.91 (m, 1 H), 0.98 (d, 7=9.46 Hz, 2 H), 1.01 (s, 9 H), 1.02-1.05 (m, 1 H), 1.17-1.21 (m, 3 H), 1.29 (s, 2 H), 1.40 (dd, 7=9.46, 5.19 Hz, 1 H), 1.51 (d, 7=3.05 Hz, 5 H), 1.85 (dd, 7=8.09, 5.34 Hz, 1 H), 2.17 (q, 7=8.85 Hz, 1 H), 2.30-2.33 (m, 1 H), 2.58 (dd, 7=13.58,7.48 Hz, 1 H), 2.91-2.94 (m, 1 H), 3.92 (d, 7=2.14 Hz, 1 H), 3.93 (s, 3 H), 4.05 (dd, 7=11.60, 3.66 Hz, 1 H), 4.32 (d, 7=9.77 Hz, 1 H), 4.51 (dd, 7=9.92, 7.17 Hz, 1 H), 5.09 (dd, 7=11.59, 1.52 Hz, 1 H), 5.27 (dd, 7=16.71, 1.22 Hz, 1 H), 5.74-5.78 (m, 1 H), 5.82 (s, 1 H), 7.05-7.09 (m, 1 H), 7.18 (d, 7=2.44 Hz, 1H), 7.19 (d, J=7.33 Hz, 1H), 7.22 (d, 7=5.80 Hz, 1 H), 7.33 (d, 7=7.63 Hz, 1 H), 7.84 (d, 7=5.80 Hz, 1 H); LC-MS (retention time: 1.76 min.), MS m/z 775 (MH*).
(Figure Removed)
To a solution of the product of step 5 of example 11 (77.0 mg, 0.136 mmol), DEEA
(70.4 mg, 0.544 mmol) and HATU (77.5 mg, 0.204 mmol) was added Boc-Melle-OH
(43.4 mg, 0.177 mmol). After stirring at rt for 14 hr, the reaction mixture was
washed with 5% aqueous NaHCOs (1 mL). The aqueous layer was extracted with
2x2 mL DCM. The combined organic layer was washed with 5% aqueous citric acid
(2 mL), brine, dried over MgC>4, concentrated and purified by flash column
chromatography (SiO2, 97:3 DCM:MeOH) to give Compound 84 (68.4 mg, 69%
yield): 'H NMR(CD3OD, 500 MHz) 8 0.89 (t, 7=7.32 Hz, 3 H) 0.94 (dd, 7=5.95,
4.43 Hz, 3 H) 1.07 (d, J=7,.63 Hz, 3 H) 1.13 (s, 5 H) 1.16-1.20 (m, 7=4.88 Hz, 2 H)
1.23 (s, 3 H) 1.28 (m, 1 H) 1.34-1.38 (m, 1 H) 1.41-1.47 (m, 1 H) 1.55-1.60 (m,
7=7.63 Hz, 1 H) 1.87-1.91 (m, 1 H) 2.22-2.26 (m, 2 H) 2.36-2.38 (m, 1 H) 2.56-2.62
(m, 1 H) 2.81 (d, 7=11.30 Hz, 2 H) 2.94-2.99 (m, 1 H) 3.92 (s, 3 H) 4.054.12(m, 2
H) 4.48-4.57 (m, 2 H) 5.12 (d, 7=10.07 Hz, 1 H) 5.32 (m, 1 H) 5.75-5.82 (m, 1 H)
5.84-5.88 (m, 1 H) 7.09-7.13 (m, 1 H) 7.16-7.20 (m, 1 H) 7.23-7.27 (m, 1 H) 7.88
(dd, 7=5.95, 2.29 Hz, 1 H) 8.04 (d, 7=9.16 Hz, 0.6 H) 8.09 (d, 7=9.46 Hz, 0.4 H); LC-
MS (retention time: 1.83 min.), MS m/z 728 (MH+).
Compound 85 was prepared by the same method as Compound 84 with the following modifications:
Modifications: Boc-MeVal-OH was used as a starting material to give Compound 84 (72.1 mg, 74% yield): H NMR(CD3OD, 500 MHz) 6 0.84 (t, 7=5.80 Hz, 3 H), 0.96 (d, 7=6.41 Hz, 3 H), 1.08 (d, 7=7.32 Hz, 2 H), 1.13 (s, 6 H), 1.16 (s, 4 H), 1.18-1.21 (m, 1 H), 1.23-1.29 (m, 1 H), 1.44 (dd, 7=9.61, 5.34 Hz, 1 H), 1.88-1.92 (m, 1 H), 2.24 (d, 7=10.07 Hz, 1 H), 2.32-2.39 (m, 2 H), 2.58 (dd, 7=13.89, 6.26 Hz, 1 H), 2.80 (s, 3 H), 2.93-2.98 (m, 1 H), 3.93 (s, 3 H), 4.01 (dd, 7=11.90, 3.36 Hz, 0.6 H), 4.12 (dd, 7=11.90, 3.66 Hz, 0.4 H), 4.16 (d, 7=11.29 Hz, 0.6 H), 4.38 (d, 7=10.99 Hz, 0.4 H), 4.45 (d, 7=10.68 Hz, 1 H), 4.47 (d, 7=10.69 Hz, 0.6 H), 4.53 (dd, 7=10.38, 7.02 Hz, 0.4 H), 4.58 (dd, 7=10.07, 7.02 Hz, 1 H), 5.12 (d, 7=4.28, 0.6 H), 5.14 (d, 7=4.27 Hz, 0.4 H), 5.30 (d, 7=7.32 Hz, 0.6 H), 5.34 (d, 7=7.32 Hz, 0.4 H), 5.78-5.85 (m, 1 H), 5.88 (t, 7=3.05 Hz, 0.6 H), 5.96 (t, 7=3.97 Hz, 0.4 H), 7.13 (dd, 7=9.00, 2.29 Hz, 0.6 H), 7.16 (dd, 7=9.46, 2.44 Hz, 0.4 H), 7.19 (m, 1 H), 7.24 (d, 7=6.10 Hz, 0.6 H), 7.26 (d, 7=6.10 Hz, 0.4 H), 7.88 (d, 7=5.80 Hz, 1 H), 8.02 (d, 7=9.16 Hz, 0.6 H) 8.05 (d, 7=9.16 Hz, 0.4 H).
(Figure Removed)
Example 86: Preparation of Compound 86
Compound 86 was prepared by the same method as Compound 84 with the following modifications:
Modifications: Boc-MeLeu-OH was used as a starting material to give Compound 85 (56.5 mg, 57% yield): 'H NMR (CD3OD, 500 MHz) 8 0.94-0.96 (m, 6 H), 1.O4-1.13 (m, 2 H), 1.17 (s.4.5 H), 1.18 (s, 4.5 H), 1.26-1.31 (m, 1 H), 1.42 (dd, 7=9.46, 5.49 Hz, 1 H), 1.46-1.51 (m, 2 H), 1.56-1.60 (m, 0.5 H), 1.69-1.72 (m, 0.5 H), 1.75-1.81 (m, 0.5 H), 1.90 (q, 7=7.50 Hz, 1 H), 2.27 (dd, 7=13.89,7.78 Hz, 1 H), 2.32-2.38 (m, 1 H), 2.58 (dd, 7=14.80, 7.48 Hz, 1 H), 2.75 (s, 3 H), 2.95-2.99 (m, 1 H), 3.93 (s, 3 H), 4.03 (d, 7=12.21 Hz, 1 H), 4.11-15 (m, 0.5 H), 4.28 (d, 7=12.21 Hz, 1 H), 4.53 (t, 7=8.50 Hz, 0.5 H), 4.59 (t, 7=8.55 Hz, 0.5 H), 4.83-4.87 (m, 7=6.41 Hz, 0.5 H), 4.96 (m, 0.5 H), 5.14 (dd, 7=11.14,4.73 Hz, 1 H), 5.32 (dd, 7=17.70, 6.41 Hz, 1 H), 5.75-5.82 (m, 1 H), 5.90 (s, 0.5 H), 5.92 (s, 0.5 H), 7.13-7.18 m, 1 H), 7.20 (s, 1 H), 7.25-7.27 (m, 1 H), 7.87 (t, 7=4.40 Hz, 1 H) 8.05 (d, 7=8.85 Hz, 1 H).
Compound 87 was prepared by the same method as Compound 84 with the following modifications:
Modifications: Boc-MeNle-OH was used as a starting material to give Compound 87 (82.3 mg, 83% yield): 'H NMR(CD3OD, 500 MHz) 5 0.90-0.96 (q, 7=7.63 Hz, 3
H) 1.05-1.10 (m, 2 H) 1.18 (s, 4.5 H) 1.20 (s, 4.5 H) 1.24-1.30 (m, 3 H) 1.31-1.38 (m, 1 H) 1.42 (dd, 7=9.46, 5.19 Hz, 2 H) 1.72-1.81 (m, 2 H) 1.88-1.92 (m, 1 H) 2.22-2.29 (m, 1 H) 2.32-2.38 (m, 1 H) 2.58 (dd, 7=13.89, 7.17 Hz, 1 H) 2.72 (s, 3 H) 2.94-2.99 (m, 1 H) 3.93 (s, 3 H) 4.02 (dd, 7=9.77,4.27 Hz, 1 H) 4.12 (dd, 7=11.90,3.35 Hz, 0.5 H) 4.24 (dd, 7=11.90, 0.6 Hz, 0.5 H) 4.51-4.60 (m, 1 H) 5.14 (d, 7=10.38 Hz, 1 H) 5.33 (dd, 7=17.24, 4.73 Hz, 1 H) 5.75-5.82 (m, 1 H) 5.91 (s, 1 H) 7.15 (dd, 7=14.34, 7.63 Hz, 1 H) 7.20 (d, 7=2.44 Hz, 1 H) 7.25 (d, 7=5.80 Hz, 1 H) 7.87 (t, .7=4.37 Hz, 1 H) 8.05 (d, 7=8.85 Hz, 1 H).
Compound 88 was prepared by the same method as Compound 84 with the following modifications:
Modifications: Boc-N-Me-NVa-OH was used as a starting material to give Compound 88 (70.5 mg, 73% yield): 'H NMR(CD3OD, 500 MHz) 5 0.96 (d, 7=6.41 Hz, 3 H) 1.06-1.10 (m, 2 H) 1.18 (s, 9 H) 1.27-1.30 (m, 4 H) 1.42 (dd, 7=9.46, 5.49 Hz, 1 H) 1.66-1.80 (m, 2 H) 1.88-1.92 (m, 1 H) 2.23-2.29 (m, 1 H) 2.30-2.37 (m, 1 H) 2.58 (dd, 7=13.58, 7.17 Hz, 1 H) 2.73 (s, 3 H) 2.94-2.98 (m, 1 H) 3.93 (s, 3 H) 4.00-4.04 (m, 1 H) 4.12 (d, 7=12.82 Hz, 0.5 H) 4.25 (d, 7=12.21 Hz, 0.5 H) 4.51-4.60 (m, 1 H) 5.13 (d, 7=10.68 Hz, 1 H) 5.32 (d, 7=17.09 Hz, 1 H) 5.75-5.81 (m, 1 H) 5.90 (s, 1 H) 7.13-7.18 (m, 1 H) 7.20 (d, 7=2.14 Hz, 1 H) 7.25 (d, 7=5.80 Hz, 1 H) 7.87 (s, 1 H) 8.05 (d, 7=9.16 Hz, 1 H).
To a solution of the product from step 5 of example 11 (66.0 mg, 0.123 mmol), DffiA (63.7 mg, 0.492 mmol) and HATU (70.0, 0.184 mmol) was added 25-tert-butoxycarbonylamino-3-hydroxy-3-methyl-butyric acid (34.0 mg, 0.147 mmol). After stirring at it for 14 hr, the reaction mixture was washed with 5% aqueous NaHCO3 (1 mL). The aqueous layer was extracted with 2x2 mL DCM. The combined organic layer was washed with 5% aqueous citric acid (2 mL), brine, dried over MgCU, concentrated and purified by reversed phase prep-HPLC to give
7=7.93 Hz, 2 H), 1.18 (s, 1 H), 1.20 (s, 9 H), 1.24-1.27 (m, 7=11.60 Hz, 3 H), 1.30 (s, 3 H), 1.43-1.48 (m, 10 H), 1.59 (s, 1 H), 1.65 (s, 1 H), 1.87 (dd, 7=8.24, 5.19 Hz, 1 H), 2.24 (q, 7=9.16 Hz, 1 H), 2.33-2.36 (m, 1 H), 2.63 (dd, 7=12.97, 6.56 Hz, 1 H), 2.94-2.99 (m, 1 H), 3.92 (s, 3 H), 3.93 (s, 1 H), 4.12 (dd, 7=11.60, 3.05 Hz, 1 H), 4.274.31 (m, 1 H), 4.54 (t, 7=9.77 Hz, 1 H), 5.12 (dd, 7=10.53, 1.37 Hz, 1 H), 5.30 (d, 7=17.09 Hz, 1 H), 5.79-5.83 (m, 1 H), 5.85 (s, 1 H), 7.11 (dd, 7=8.55, 1.83 Hz, 1 H), 7.18 (d, 7=2.24 Hz, 1 H), 7.24 (d, 7=5.49 Hz, 1 H), 7.88 (m, 1 H), 8.10 (d, 7=8.85 Hz, 1 H) ); LC-MS (retention time: 1.637 min.), MS m/z 716 (Nflf).
Compound 91 was prepared by the same method as Compound 89 with the following modifications:
Modifications: Boc-L-Thr-OH was used as a starting material to give Compound 91 (80.5 mg, 66% yield): 'H NMR(CD3OD, 500 MHz) 5 0.93 (dd, 7=8.24,2.14 Hz, 2 H), 1.08-1.18 (m, 4 H), 1.20 (d, 7=6.10 Hz, 3 H), 1.29 (s, 9 H), 1.32 (dd, 7=9.61, 5.04 Hz, 1 H), 1.45 (d, 7=4.27 Hz, 1 H), 1.84 (dd, 7=7.63, 5.19 Hz, 1 H), 2.15 (q, 7=8.85 Hz, 1 H), 2.42-2.48 (m, 1 H), 2.64 (dd, 7=14.04,7.63 Hz, 1 H), 2.85-2.89 (m, 1 H), 3.92 (s, 3 H), 4.1-4.14 (m, 2 H), 4.30 (d, 7=4.88 Hz, 1 H), 4.38 (d, 7=11.60 Hz, 1 H), 4.60 (t, 7=8.55 Hz, 1 H), 5.04 (dd, 7=10.22, 1.68 Hz, 1 H), 5.80-5.84 (m, 2 H), 7.11 (d, 7=9.16 Hz, 1 H), 7.17 (d, 7=1.83 Hz, 1 H), 7.23 (d, 7=5.80 Hz, 1 H), 7.87 (d, 7=5.80 Hz, 1 H), 8.10 (d, 7=8.85 Hz, 1 H); LC-MS (retention time: 1.560 min.), MS m/z 702 (MH+).
Compound 92 was prepared by the same method as Compound 89 with the following modifications:
Modifications: Boc-L-Thr(Me)-OH was used as a starting material to give Compound 92 (47.1 mg, 69% yield): 'H NMR(CD3OD, 500 MHz) 6 0.95 (d, 7=4.27 Hz, 2 H), 1.11-1.16 (m, 3 H), 1.18 (d, 7=6.10 Hz, 6 H), 1.32 (s, 9 H), 1.38 (dd, 7=9.31, 5.04 Hz, 1 H), 1.45 (s, 1 H), 1.85 (dd, 7=7.78, 5.04 Hz, 1 H), 2.13 (d, 7=9.15 Hz, 1 H), 2.46-2.51 (m, 1 H), 2.63 (dd, 7=14.19, 7.78 Hz, 1 H), 2.81-2.91 (m, 1 H), 3.68-3.73 (m, 1 H), 3.92 (s, 4 H), 4.14 (d, 7=12.21 Hz, 1 H), 4.35 (d, 7=5.80 Hz, 1 H), 4.42 (d, 7=11.29 Hz, 1 H), 4.60 (t, 7=8.70 Hz, 1 H), 5.05 (d, 7=10.68 Hz, 1 H), 5.24 (dd, 7=16.79,0.92 Hz, 1 H), 5.81-5.85 (m, 2 H), 7.11 (dd, 7=9.16,0.92 Hz, 1 H), 7.17 (s, 1 H), 7.24 (d, 7=5.80 Hz, 1 H), 7.88 (d, 7=5.80 Hz, 1 H), 8.11 (d, 7=8.55 Hz, 1 H); LC-MS (retention time: 1.660 min.), MS m/z 716 (MIT).
Compound 93 was prepared by the same method as Compound 89 with the following modifications:
Modifications: Boc-L-Thr(tBu)-OH was used as a starting material to give Compound 93 (52.7 mg, 53% yield): !H NMR(CD3OD, 500 MHz) 6 1.09 (dd, 7=8.24, 2.44 Hz, 2 H), 1.201.24.(m, 3 H), 1.28 (s, 9 H), 1.45 (s, 9 H), 1.89 (dd,
8.34 Hz, 1 H), 2.32-2.36 (m, 1 H), 2.59 (dd, 7=12.82, 6.41 Hz, 1 H), 2.95-3.00 (m, 1 H), 3.71 (s, 2 H), 3.92 (s, 3 H), 3.93-3.99 (m,
1 H), 4.10 (d, 7=7.02 Hz, 1 H), 4.15 (d, 7=11.90 Hz, 1 H), 4.22 (dd, 7=6.10, 2.44 Hz,
2 H), 4.40 (d, 7=11.60 Hz, 1 H), 4.54 (dd, 7=10.01, 6.71 Hz, 1 H), 5.13 (d, 7=10.38
Hz, 1 H), 5.31 (d, 7=17.09 Hz, 1 H), 5.76-5.83 (m, 1 H), 5.87 (s, 1 H), 6.06 (d,
7=9.46 Hz, 1 H), 6.36 (d, 7=7.02 Hz, 1 H), 7.11 (d, 7=8.85 Hz, 1 H), 7.18 (s, 1 H),
7.24 (d, 7=5.49 Hz, 1 H), 7.88 (m, 1 H), 8.08 (d, 7=9.16 Hz, 1 H).
Example 94: Preparation of Compound 94
Compound 94 was prepared by the same method as Compound 89 with the following modifications:
Modifications: Boc-(2S,3S)-2-amino-3-methoxybutanoic acid was used as a starting material to give Compound 94 (150.2 mg, 80% yield): JH NMR(CD3OD, 500 MHz) 8 1.04-1.13 (m, 3 H), 1.17 (d, 7=6.10 Hz, 3 H), 1.20-1.24 (m, 2 H), 1.27 (s, 9 H), 1.44.1.48 (m, 2 H), 1.86 (dd, 7=7.93, 5.49 Hz, 1 H), 2.24 (q, 7=8.65 Hz, 1 H), 2.34-2.37 (m, 1 H), 2.61 (dd, 7=14.19, 7.17 Hz, 1 H), 2.94-2.99 (m, 1 H), 3.66 (m, 1 H), 3.92 (s, 3 H), 4.13 (dd, 7=12.36, 3.81 Hz, 1 H), 4.37 (dd, 7=22.58, 10.99 Hz, 2 H), 4.54 (dd, 7=10.38, 7.63 Hz, 1 H), 5.12 (d, 7=10.68 Hz, 1 H), 5.31 (d, 7=17.40 Hz, 1 H), 5.77-5.82 (m, 1 H), 5.85 (s, 1 H), 7.12 (d, 7=9.16 Hz, 1 H), 7.18 (s, 1 H), 7.25 (d, 7=6.10 Hz, 1 H), 7.89 (d, 7=5.80 Hz, 1 H), 8.10 (d, 7=8.85 Hz, 1 H); LC-MS (retention time: 1.673 min.), MS rn/z 716 (MET).
To a mixture of H-allo-THr-OH (5.0 g, 41.98 mmol) and DIEA (10.9 g, 83.96 mmol) in DCM (150 mL) was added di-tert-butyl dicarbonate (13.7 g, 62.97 mmol). After stirring at rt for 14h, the reaction mixture was washed with3xlOO mL DCM. me comomea organic layer was dried over MgSO4 and conentrated. LC/MS indicated most product stayed in the H2O layer. Thus the water layer was concentrated. The product was purified by a flash column chromatography (SiO2, 90:10 DCM:MeOH) to give Boc-allo-THr-OH ; LC-MS (retention time: 0.727 min.), MSnVz 242(MNa+).
Step 2
To a solution of the product from step 5 of example 11 (100.0 mg, 0.174 mmol), DIEA (67.6 mg, 0.522 mmol) and HATU (106.0 mg, 0.278 mmol) was added the product from step 1 above (57.3 mg, 0.262 mmol). After stirring at rt for 3 hr, the reaction mixture was washed with 5% aqueous NaHCO3 (1 mL). The aqueous layer was extracted with 2x2 mL DCM. The combined organic layer was washed with 5% aqueous citric acid (2 mL), brine, dried over MgO4, concentrated and purified by reversed phase prep-HPLC to give Compound 95 (39.1 mg, 32% yield): *H NMR(CD3OD, 500 MHz) 5 1.02 (d, y=8.55 Hz, 1 H), 1.18-1.23 (m, 3 H), 1.25 (s, 9
H), 1.38 (dd, 7=9.15, 6.30 Hzl H), 1.84 (dd, 7=7.93, 5.19 Hz, 1 H), 2.19-2.24 (m, 1 H), 2.38-2.43 (m, 1 H), 2.65 (dd, 7=14.19, 6.87 Hz, 1 H), 2.92-2.96 (m, 1 H), 3.92 (s, 3 H), 3.93 (s, 2 H), 4.16-4.19 (m, 1 H), 4.23 (d, 7=8.24 Hz, 1 H), 4.44 (d, 7=12.21 Hz, 1 H), 4.57-5.81 (m, 1 H), 5.09 (d, 7=10.68 Hz, 1 H), 5.29 (d, 7=17.09 Hz, 1 H), 5.75-5.81 (m, 1 H), 5.83-5.85 (m, 1 H), 7.11 (d, 7=10.38 Hz, 1 H), 7.18 (d, 7=1.83 Hz, 1 H), 7.24 (d, 7=6.41 Hz, 1 H), 7.88 (d, 7=5.80 Hz, 1 H), 8.11 (d, 7=9.16 Hz, 1 H); LC-MS (retention time: 1.583 min.), MS m/z 702 (MH+).
96 was prepared by the same method as Compound 95 with the following modifications:
Modifications:
Stepl
(25,35^-2-Amino-3-ethoxybutanoic acid hydrochloride was used as a starting material in step 1 to give Boc-(2S,35)-2-Amino-3-ethoxybutanoic acid; LC-MS (retention time: 1.067 min.), MS m/z 270 (M+Na+).
Step 2
The product from step 1 was then coupled the same way with the product from step 5 of example 11 to give Compound 96 (55.3 rag, 44% yield): JH NMR(CD3OD, 500 MHz) 5 0.94 (t, 7=6.87 Hz, 1 H), 0.97-1.03 (m, 2 H), 1.08-1.11 (m, 2 H), 1.13-1.15 (m, 2 H), 1.17 (d, 7=6.10 Hz, 6 H), 1.29 (s, 9 H), 1.41-1.45 (m, 3 H), 1.85 (dd, 7=7.48, 5.34 Hz, 1 H), 2.12-2.19 (m, 1 H), 2.43-2.49 (m, 1 H), 2.60 (dd, 7=13.73, 6.80 Hz, 1 H), 2.89-2.93 (m, 1 H), 3.50-3.57 (m, 2 H), 3.73-3.78 (m, 1 H), 3.92 (s, 3 H), 4.18 (d, 7=8.85 Hz, 1 H), 4.35 (d, 7=12.21 Hz, 1 H), 4.39 (d, 7=8.55 Hz, 1 H), 4.53 (t, 7=7.78 Hz, 1 H), 5.07 (d, 7=9.16 Hz, 1 H), 5.25 (d, 7=18.01 Hz, 1 H), 5.82 (t, 7=9.85 Hz, 1 H), 5.88 (t, 7=9.80 Hz, 1H), 7.11 (d, 7=5.19 Hz, 1 H), 7.18 (d, 7=2.14 Hz, 1 H), 7.24 (d, 7=5.49 Hz, 1 H), 7.88 (d, 7=6.10 Hz, 1 H), 8.10 (d, 7=8.85 Hz, 1 H); LC-MS (retention time: 1.743 min.), MS m/z 730 (MH+).
(Figure Removed)
Compound 97 was prepared by the same method as Compound 95 with the following modifications:
Modifications:
Step 1
H-allo-Thr(t-Bu)-OH was used as a starting material in step 1 to give Boc-(25,35)-2-Amino-3-ethoxybutanoic acid; LC-MS (retention time: 1.363 min.), MS m/z 298 (M+Na+).
Step 2
The product from step 1 was then coupled the same way with the product from step 5 of example 11 to give Compound 97 (48.2 mg, 37% yield): LC-MS (retention time: 1.820 min.), MS m/z 758 (MH*).
Example 99: Preparation of Compound 99
Compound 99 was prepared by the same method as step 1 of Example 55 with the following modifications:
Modifications: Compound 84 was used as a starting material to give Compound 99 (60.3 mg, 98% yield): 'H NMR(CD3OD, 500 MHz) 8 1.00 (q, 7=7.12 Hz, 3 H) 1.10-113 (m, 5 H) 1.20-1.31 (m, 3 H) 1.41 (dd, 7=9.46, 5.49 Hz, 1 H) 1.61-1.68 (m, 1 H) 1.92 (dd, 7=8.24,5.49 Hz, 1 H) 2.04-2.09 (m, 1 H) 2.28 (q, 7=8.55 Hz, 1 H) 2.34-2.39 (m, 1 H) 2.57 (s, 3 H) 2.64-2.70 (m, 1 H) 2.94-2.97 (m, 1 H) 3.93 (s, 3 H) 4.07-4.14 (dd, 7=12.05, 3.81 Hz, 1 H) 4.13 (d, 7=6.10 Hz, 1 H) 4.18 (d, 7=5.80 Hz, 1 H)
4.73 (m, 1 H) 5.15 (d, 7=10.68 Hz, 1 H) 5.32 (d, 7=17.09 Hz, 1 H) 5.70-5.79 (m, 1 H) 5.92 (t, 7=3.66 Hz, 0.4 H) 5:95 (t, 7=3.66 Hz, 0.6 H) 7.17 (dd, 7=9.16, 2.44 Hz, 1 H) 7.22 (d, 7=2.14 Hz, 1 H) 7.28 (dd, 7=5.80, 3.36 Hz, 1 H) 7.91 (dd, 7=5.80, 4.27 Hz, 1 H) 8.03 (d, 7=8.85 Hz, 0.6 H) 8.07 (d, 7=9.16 Hz, 0.4 H); LC-MS (retention time: 1.33 min.), MS m/z 6.28 (MH*).
To a solution of Compound 94 (0.600 g, 0.838 mmol) in DCE (3 mL) was added TFA (3 mL). After stirring at rt for 15 min, the reaction mixture was concentrated.
then redissolved in DCM (2 mL) and treated with a solution of IN HC1 in Et2O (10 mL). The resulting suspension was chilled at 0 °C, vacuum filtrated, washed with EtaO and dried in vacuum oven to give the product as a bis-hydrochloride salt as a white solid (527.1 g, 91% yield): 'HNMR(CD3OD, 500 MHz) 8 1.08-1.15 (m, 2 H), 1.21 (d, 7=6.71 Hz, 4 H), 1.28-1.33 (m, 1 H), 1.41 (dd, 7=9.46, 5.49 Hz, 1 H), 1.91 (dd, 7=8.24, 5.49 Hz, 1 H), 2.28 (q, 7=8.65 Hz, 1 H), 2.34-2.37 (m, 1 H), 2.68 (dd, 7=13.12, 7.02 Hz, 1 H), 2.81 (s, 3 H), 2.93-2.98 (m, 1 H), 3.45 (s, 3 H), 3.94 (s, 3 H), 3.964.00 (m, 1 H), 4.16 (dd, 7=1 1.90, 3.66 Hz, 1 H), 4.27 (d, 7=11.60 Hz, 1 H), 4.59 (d, 7=4.58 Hz, 1 H), 4.69 (dd, 7=10.07, 7.02 Hz, 1 H), 5.14 (dd, 7=10.53, 1.37 Hz, 1 H), 5.32 (d, 7=17.09 Hz, 1 H), 5.70-5.77 (m, 1 H), 5.94 (t, 7=3.66 Hz, 1 H), 7.19 (d, 7=9.16 Hz, 1 H), 7.24 (s, 1 H), 7.32 (s, 1 H), 7.91 (d, 7=5.80 Hz, 1 H), 8.09 (d, 7=9.16 Hz, 1 H); LC-MS (retention time: 1.213 min.), MS m/z 616 (MH1").
To a solution mixture of Compound 100 (80 mg, 0.116 mmol) and DIEA (31.5 mg, 0.244 mmol) in THF (2 mL) was added N,N'-dissucinimidyl carbonate (44.6 mg, 0.174 mmol). The resulting suspension was irradiated in a microwave to 80 °C for 15 min. Then it was treated with tert-amylamine (84.8 mg, 1.16 mmol). After stirring at rt 15 min, the reaction was concentrated and purified by reversed phase prep-HPLC to give Compound 101 (65.1 mg, 79%): 'H NMR(CD3OD, 500 MHz) 8 1.03-1.08 (m, 3 H), 1.16 (d, 7=6.41 Hz, 3 H), 1.19 (s, 9 H), 1.21-1.25 (m, 2 H), 1.27 (d, 7=6.10 Hz, 1 H), 1.45 (dd, 7=9.46, 5.19 Hz, 1 H), 1.85 (dd, 7=8.24, 5.19 Hz, 1 H), 2.23 (q, 7=9.46 Hz, 1 H), 2.34-2.41. (m, 1 H), 2.61 (dd, 7=14.34, 7.32 Hz, 1 H), 2.94-2.97 (m, 1 H), 3.58-3.63 (m, 1 H), 3.92 (s, 3 H), 4.15 (dd, 7=12.05, 3.81 Hz, 1 H), 4.39 (d, 7=11.60 Hz, 1 H), 4.55 (dd, 7=9.92, 7.48 Hz, 1 H), 5.11 (d, 7=10.68 Hz, 1 H), 5.29 (d, 7=17.40 Hz, 1 H), 5.77-5.83 (m, 1 H), 5.86 (s, 1 H), 7.12 (dd, 7=9.00, 2.29 Hz, 1 H), 7.18 (d, 7=2.14 Hz, 1 H), 7.24 (d, 7=5.80 Hz, 1 H), 7.88 (d, 7=5.80 Hz, 1 H), 8.10 (d, 7=9.16 Hz, 1 H); LC-MS (retention time: 1.617 min.), MS m/z 715 (MH*).
Compound 102 was prepared by the same method as Compound 101 with the following modifications:
Modifications: tert-amylamine was used as a starting material to give Compound 102 (62.5 rag, 74% yield): JH NMR(CD3OD, 500 MHz) 8 0.77 (t, 7=7.48 Hz, 2 H), 0.84 (t, 7=7.48 Hz, 1 H), 1.04-1.08 (m, 2 H), 1.13 (d, 7=1.22 Hz, 9 H), 1.16 (d, 7=6.41 Hz, 3 H), 1.21 (s, 1 H), 1.22-1.28 (m, 2 H), 1.44 (dd, 7=9.46, 5.19 Hz, 1 H), 1.52-1.57 (m, 1 H), 1.58-1.62 (m, 1 H), 1.85 (dd, 7=7.93, 5.19 Hz, 1 H), 2.21-2.25
3.59-3.64 (m, 1 H), 4.15 (dd, 7=11.75, 3.81 Hz, 1 H), 4.38 (d, 7=12.51 Hz, 1 H), 4.50 (d, 7=7.63 Hz, 1 H), 4.55 (dd, 7=9.92, 7.78 Hz, 1 H), 5.11 (d, 7=9.77 Hz, 1 H), 5.29 (d, 7=16.79 Hz, 1 H), 5.77-5.83 (m, 1 H), 5.86 (t, 7=4.73 Hz, 1 H), 7.12 (dd, 7=8.85, 2.44 Hz, 1 H), 7.18 (d, 7=2.44 Hz, 1 H), 7.24 (d, 7=6.10 Hz, 1 H), 7.88 (d, 7=5.80 Hz, 1 H), 8.10 (d, 7=9.16 Hz, 1 H); LC-MS (retention time: 1.690 min.), MS m/z 729 (MH*).
Example 103: Preparation of Compound 103
Compound 103 was prepared by the same method as Compound 101 with the following modifications:
Modifications: cyclopentylamine was used as a starting material to give Compound 103 (56.4 mg, 67% yield): 'H NMR(CD3OD, 500 MHz) 5 1.01-1.08 (m, 2 H), 1.07 (d, 7=6.10 Hz, 1 H), 1.16 (d, 7=6.10 Hz, 3 H), 1.21-1.25 (m, 3 H), 1.30-1.33 (m, 1 H), 1.44 (dd, 7=9.77, 5.19 Hz, 1 H), 1.51-1.56 (m, 2 H), 1.60-1.65 (m, 2 H), 1.71-1.75 (m, 1 H), 1.80-1.84 (m, 1 H), 1.86 (dd, 7=8.09, 5.34 Hz, 1 H), 2.20-2.25 (m, 1 H), 2.37-2.41 (m, 1 H), 2.61 (dd, 7=14.04, 7.32 Hz, 1 H), 2.93-2.98 (m, 1 H), 3.60-3.65 (m, 1 H), 3.75-3.80 (m, 1 H), 3.92 (s, 3 H), 4.17 (dd, 7=12.05, 3.81 Hz, 1 H), 4.37 (d, 7=11.90 Hz, 1 H), 4.55-4.59 (m, 2 H), 5.10 (d, 7=11.60 Hz, 1 H), 5.29 (d, 7=16.48 Hz, 1 H), 5.78-5.83 (m, 1 H), 5.85 (d, 7=2.44 Hz, 1 H), 7.13 (dd, 7=9.16, 2.44 Hz, 1 H), 7.18 (d, 7=2.44 Hz, 1 H), 7.24 (d, 7=5.80 Hx, 1 H), 7.88 (d, 7=5.80 Hz, 1 H), 8.09 (d, 7=9.16 Hz, 1 H); LC-MS (retention time: 1.607 min.), MS m/z 727 (MET).
To a solution mixture of Compound 100 (80 mg, 0.116 mmol) and DIEA (31.5 mg, 0.244 mmol) in THF (2 mL) was added N.N'-dissucinimidyl carbonate (44.6 mg, 0.174 mmol). The resulting suspension was irradiated in a microwave to 80 °C for 15 min. Then was added a slurry solution of sodium cyclopentoxide which was prepared by treating a 0 °C solution of cyclopentanol (110 mg, 1,28 mmol) in THF (1 mL) with NaH (60% in oil, 46.4 mg, 1.16 mmol) for 15 min at it. After stirring at rt 15 min, thee reaction was quenched with saturated aqueous ammonium chloride (1 mL) and extracted with EtOAc (5 mL). The organic layer was then passed through a celite hydromatrix column, concentrated and purified by reversed phase prep-HPLC to give Compound 104 (38.2 mg, 45%): !H NMR(CD3OD, 500 MHz) 6 1.03-1.09 (m, 3 H), 1.16 (d, 7=6.10 Hz, 3 H), 1.201.25 (m, 1 H), 1.25-1.30 (m, 7=10.22, 5.34 Hz, 1 H), 1.40-1.45 (m, 7=10.83, 3.81 Hz, 1 H), 1.46 (dd, 7=9.61, 5.34 Hz, 1 H), 1.58-1.63 (m, 3 H), 1.70-1.75 (m, 2 H), 1.86 (dd, 7=7.63, 5.49 Hz, 1 H), 2.22-2.26 (m, 1 H), 2.34-2.39 (m, 1 H), 2.59-2.64 (m, 1 H), 2.94-2.98 (m, 1 H), 3.67 (dd, 7=7.78, 6.56 Hz, 1 H), 3.92 (s, 3 H), 4.13 (dd, 7=10.83,4.12 Hz, 1 H), 4.374.42 (m, 1 H), 4.56 (dd, 7=10.07, 7.32 Hz, I H), 4.71-4.76 (m, 1 R), 5.12 (d, 7=10.68 Hz, 1 H), 5.31 (d, 7=16.79 Hz, 1 H), 5.80 (m, i H), 5.85 (s, i H), 7.13 (d, 7=10.68 Hz, i H), 7.19 (d, 7=1.83 Hz, 1 H), 7.25 (d, 7=6.10 Hz, 1 H), 7.89 (d, 7=5.80 Hz, 1 H), 8.09 (d, 7=9.16 Hz, 1 H),; LC-MS (retention time: 1.697 min.), MS m/z 728 (MET).
To a solution mixture of Compound 100 (80.0 mg, 0.116 mmol) and DIEA (31.5 mg, 0.244 mmol) in DCM (2 mL) was added di-tert-amyl dicarbonate (57.1mg,
0.232 mmol). After stirring at rt for 14 h, solvent was removed and product was purified by reversed phase prep-HPLC to give Compound 105 (62.5 mg, 74% yield): 'H NMR(CD3OD, 500 MHz) 6 0.79 (t, 7=7.48 Hz, 3 H), 1.04-1.08 (m, 3 H), 1.17 (d, .7=6.10 Hz, 3 H), 1.19-1.23 (s, 3 H), 1.24 (s, 3 H), 1.39-1.43 (m, 1 H), 1.46 (dd, 7=9.61, 5.34 Hz, 1 H), 1.60-1.65 (m, 2 H), 1.86 (dd, 7=7.93, 5.49 Hz, 1 H), 2.22 (q, 7=8.85 Hz, 1 H), 2.35-2.40 (m, 1 H), 2.61 (dd, 7=14.04, 7.15 Hz, 1 H), 2.94-3.00 (m, 1 H), 3.64-4.00 (m, 1 H), 3.92 (s, 4 H), 4.14 (dd, 7=11.90, 3.05 Hz, 1 H), 4.35 (d, 7=7.93 Hz, 1 H), 4.40 (d, 7=11.90 Hz, 1 H), 4.55 (dd, 7=9.31, 7.78 Hz, 1 H), 5.11 (d, 7=10.68 Hz, 1 H), 5.30 (d, 7=16.79 Hz, 1 H), 5.79-5.83 (m, 1 H), 5.85 (s, 1 H), 7.12 (d, 7=9.16 Hz, 1 H), 7.18 (s, 1 H), 7.25 (d, 7=5.80 Hz, 1 H), 7.86-7.90 (m, 1 H), 8.09 (d, 7=9.16 Hz, 1 H); LC-MS (retention time: 1.740 min.), MS m/z 730 (MH+).
ExamCompound 106 was prepared by the same method as Compound 105 with the following modifications:
Modifications: Carbonic acid pyridin-2-yl ester 2,2,2-trifluoro-l,l-dimethyl-ethyl ester was used as a starting material to give Compound 106 (58.1 mg, 65% yield): JH NMR(CD3OD, 500 MHz) 6 1.04-1.08 (m, 3 H), 1.17 (d, 7=6.10 Hz, 3 H), 1.19.1.23 (m, 1 H), 1.23-1.27 (m, 1 H), 1.28 (s, 3 H), 1.46 (dd, 7=9.46, 5.19 Hz, 2 H), 1.49 (s, 2 H), 1.86 (dd, 7=8.09, 5.34 Hz, 1 H), 2.21 (q, 7=8.85 Hz, 1 H), 2.36-2.40 (m, 1 H), 2.62 (dd, 7=13.74, 7.32 Hz, 1 H), 2.93-2.98 (m, 1 H), 3.65-3.70 (m, 1 H), 3.92 (s, 3
H), 4.12 (dd, 7=11.90, 3.66 Hz, 1 H), 4.31 (d, 7=8.24 Hz, 1 H), 4.42 (d, 7=11.90 Hz, 1 H), 4.57 (dd, 7=10.07, 7.32 Hz, 1 H), 5.11 (d, 7=10.38 Hz, 1 H), 5.30 (d, 7=16.79 Hz, 1 H), 5.78-5.83 (m, 1 H), 5.84 (s, 1 H), 7.12 (dd, 7=9.00, 2.29 Hz, 1 H), 7.19 (d, 7=2.14 Hz, 1 H), 7.25 (d, 7=5.80 Hz, 1 H), 7.89 (d, 7=6.10 Hz, 1 H), 8.09 (d, 7=8.85 Hz, 1 H); LC-MS (retention time: 1.770 min.), MS m/z 770 (MH+).
To a solution of the product from step 3 of Example 25 (100.0 mg, 0.116 mmol),
allo-Thr-OH (43.5 mg, 0.177 mmol). After stirring at rt for 3 hr, the reaction mixture was washed with 5% aqueous NaHCOa (1 mL). The aqueous layer was extracted with 2x2 mL DCM. The combined organic layer was washed with 5% aqueous citric acid (1 mL), brine, dried over MgC>4, concentrated and purified by reversed phase prep-HPLC to give Compound 107 (62.5 mg, 52% yield): 'HNMR(CD3OD, 500 MHz) 50.8-1.02 (m, 1 H), 1.04-1.08 (m, 2 H), 1.23-1.27 (m, 12 H), 1.42 (dd, 7=9.46, 5.19 Hz, 1 H), 1.86 (t, 7=6.26 Hz, 1 H), 2.23-2.27 (m, 1 H), 2.46-2.50 (m, 1 H), 2.76 (dd, 7=14.04, 6.71 Hz, 1 H), 2.95-2.99 (m, 1 H), 3.94-3.98 (m, 1 H), 4.28 (d, 7=7.32 Hz, 2H), 4.52 (d, 7=12.51 Hz, 1 H), 4.63 (t, 7=9.00 Hz, 1 H), 5.12 (d, 7=10.07 Hz, 1 H), 5.31 (d, 7=16.79 Hz, 1 H), 5.77-5.83 (m, 1 H), 6.09 (s, 1 H), 7.36-7-41 (m, 1 H), 7.47 (t) 7=7.17 Hz, 3 H), 7.52 (d, 7=7.63 Hz, 1 H), 7.70 (t, 7=7.17 Hz, 1 H), 7.85 (s, 1 H), 7.88 (d, 7=8.24 Hz, 1 H), 8.17 (d, 7=7.93 Hz, 2 H), 8.22 (d, 7=7.63 Hz, 1 H); LC-MS (retention time: 1.937 min.), MS m/z 748 (MH*).
Compound 108 was prepared by the same method as Compound 107 with the following modifications:
Modifications: Boc-(2S, 35)-Amino-3-methoxybutanoic acid was used as a starting material to give Compound 108 (75.1 mg, 51% yield): 'H NMR(CD3OD, 500 MHz) 5 0.80-1.02 (m, 4 H), 1.18 (d, 7=6.10 Hz, 3 H), 1.28 (s, 9 H), 1.44 (dd, 7=9.77, 1.30 Hz, 1 H), 1.45-1.50 (m, 1 H), 1.85-1.90 (m, 1 H), 2.14-2.18 (m, 1 H), 2.55-2.59 (m, 1 H), 2.72-2.76 (m, 1 H), 2.91-2.95 (m, 1 H), 3.34 (s, 3 H), 3.65-3.69 (m, 1 H), 4.32 (d, 7=10.68 Hz, 1 H), 4.40 (d, 7=7.93 Hz, 1 H), 4.46 (d, 7=13.12 Hz, 1 H), 4.60 (t, 7=8.24 Hz, 1 H), 5.07 (d, 7=9.46 Hz, 1 H), 5.26 (d, 7=17.40 Hz, 1 H), 5.82-5.86 (m, 1 H), 6.08 (s, 1 H), 7.38 (dd, 7=7.32, 6.10 Hz, 1 H), 7.47 (t, 7=7.02 Hz, 3 H), 7.51 (d, 7=5.80 Hz, 1 H), 7.69 (t, 7=6.56 Hz, 1 H), 7.69 (t, 7=6.56 Hz, 1 H), 7.85 (s, 1 H), 7.88 (d, 7=7.63 Hz, 1 H), 8.18 (d, 7=8.24 Hz, 3 H), 8.21 (d, 7=9.16 Hz, 1 H); LC-MS (retention time: 1.973 min.), MS m/z 762 (MrT).
Compound 109 was prepared by the same method as Compound 107 with the following modifications:
Modifications: Boc-(2S, 3S)-Amino-3-ethoxybutanoic acid was used as a starting material to give Compound 109 (57.2 mg, 47% yield): ]H NMR(CD3OD, 500 MHz) 8 1.02-1.08 (m, 4 H), 1.17 (d, 7=6.10 Hz, 6 H), 1.19 (s, 1 H), 1.19-1.24 (m, 1 H), 1.23-1.27 (m, 7=3.97 Hz, 1 H), 1.30 (s, 9 H), 1.44 (dd, 7=9.77, 5.50 Hz, 1 H), 1.46 (s, 1 H), 1.88 (dd, 7=7.78, 5.95 Hz, 1 H), 2.20-1.25 (m, 1 H), 2.49-2.54 (m, 1 H), 2.69-2.73 (m, 1 H), 2.93-2.97 (m, 1 H), 3.53-3.57 (m, 2 H), 3.75-3.80 (rn, i H), 4.34 (tici, 7=11.75, 3.20 Hz, 1 H), 4.42 (t, 7=8.30 Hz, 2 H), 4.57 (t, 7=8.09 Hz, 1 H), 5.11 (d, 7=10.38 Hz, 1 H), 5.29 (d, 7=17.40 Hz, 1 H), 5.78-5.83 (m, 1 H), 6.09 (s, 1 H), 7.38 (t, 7=7.32 Hz, 1 H), 7.47 (t, 7=7.63 Hz, 2 H), 7.52 (d, 7=7.02 Hz, 1 H), 7.70 (t, 7=7.93 Hz, 1 H), 7.86 (s, 1 H), 7.88 (d, 7=7.93 Hz, 1 H), 8.18 (d, 7=7.32 Hz, 2 H), 8.22 (d, 7=8.24 Hz, 1 H); LC-MS (retention time: 2.030 min.), MS m/z 776 (MH+).
Example 110: Preparation of Compound 110
Compound 110 was prepared by the same method as Compound 89 with the following modifications:
Modifications: Boc-L-Thr(Bn)-OH was used as a starting material to give Compound 110 (49.8 mg, 48% yield) ); LC-MS (retention time: 1.857 min.), MS m/z 792 (MIT).
A solution of Compound 23 (see Example 23) (l.SOg, 2.19 mmol) in DCM (50 mL) and trifluoroacetic acid (50 mL) was stirred for 3 h at rt. The mixture was concentrated in vacua to a viscous residue, and was then dissolved in 1,2-dichloroethane and again concentrated in vacuo to give the desired bis-trifluoroacetic acid salt product as an off-white glassy solid (quantitative). The material was used directly in the next step without purification.
Step 2: '
To a solution of the product from Example 120, Step 1 (118 mg, 0.146 mmol) in 1,2-dichloroethane (3 mL) was added p-tolyl chloroformate (32.4 mg, 0.190 mmol) and MW-diisopropylethylamine (94.5 mg, 0.731 mmol). The mixture was agitated at rt for 72 h. The reaction mixture was washed with pH = 4 buffer solution
(3x3 mL), and the washes were back-extracted with 1,2-dichloroethane (3 mL). The organic phases were combined and concentrated in vacua. The crude product was then dissolved in MeOH and purified by reverse phase preparative HPLC to give the title compound (Compound 120) as a yellow glassy solid (64.2 mg, 61.1% yield): 'H NMR (CD3OD) 5 1.06-1.10 (m, 3 H), 1.12 (s, 9 H), 1.24-1.28 (m, 2 H), 1.44 (dd, 7=9.31, 5.34 Hz, 1 H), 1.89 (dd, 7=7.93, 5.49 Hz, 1 H), 2.21-2.28 (m, 2 H), 2.31 (s, 3 H), 2.62-2.66 (m, 1 H), 2.93-2.99 (m, 1 H), 4.12 (dd, 7=11.90, 3.66 Hz, 1 H), 4.42 (d, 7=11.60 Hz, 1 H), 4.57 (dd, 7=10.22,7.17 Hz, 1 H), 5.13 (d, 7=10.38 Hz, 1 H), 5.30 (d, 7=17.09 Hz, 1 H), 5.76 (ddd, 7=17.09,9.77,9.46 Hz, 1 H), 5.87 (s, 1 H), 6.79 (d, 7=8.24 Hz, 2 H), 7.07 (d, 7=8.24 Hz, 2 H), 7.30 (d, 7=6.10 Hz, 1 H), 7.40 (t, 7=7.63 Hz, 1 H), 7.68 (t, 7=7.63 Hz, 1 H), 7.79 (d, 7=8.24 Hz, 1 H), 7.93 (d, 7=5.80 Hz, 1 H), 8.17 (d, 7=8.24 Hz, 1 H); MS m/z 718 (MH+).
Example 121: Preparation of Compound 121
Compound 121 was prepared by following Scheme 1 of Example 120 except that phenyl chloroformate was used in place of p-tolyl chloroformate in step 2.
Step 2:
Modifications: 30 mg (0.19 mmol) phenyl chloroformate used, 89.0 mg product
obtained as a yellow glassy solid (50% yield): MS m/z 704 (MH*).
Compound 122 was prepared by following Scheme 1 of Example 120 except that 4-fluorophenyl chloroformate was used in place of p-tolyl chloroformate in step 2.
Step 2:
Modifications: 33 mg (0.19 mmol) 4-fluorophenyl chloroformate used, 83.1 mg
product obtained as a sticky yellow
Compound 123 was prepared by following Scheme 1 of Example 120 except that 4-methoxyphenyl chloroformate was used in place ofp-tolyl chloroformate in step 2.
Step 2:
Modifications: 35 mg (0.19 mmol) 4-methoxyphenyl chloroformate used, 70.2 mg product obtained as a yellow glassy solid (65.4% yield): *H NMR (CD3OD) 5 1.06-1.10 (m, 3 H), 1.11 (s, 9 H), 1.24-1.28 (m, 2 H), 1.44 (dd, 7=9.46, 5.49 Hz, 1 H), 1.89 (dd, 7=7.93,5.49 Hz, 1 H), 2.24 (q, 7=8.85 Hz, 1 H), 2.31 (ddd, 7=13.81,10.30, 3.97 Hz, 1 H), 2.62-2.66 (m, 1 H), 2.94-2.98 (m, 1 H), 3.77 (s, 3 H), 4.12 (dd, 7=11.60, 3.66 Hz, 1 H), 4.42 (d, 7=11.60 Hz, 1 H), 4.57 (dd, 7=10.07,7.32 Hz, 1 H), 5.13 (d, 7=10.68 Hz, 1 H), 5.30 (d, 7=16.79 Hz, 1 H), 5.72-5.80 (m, 1 H), 5.87 (s, 1 H), 6.80 (d, 7=2.44 Hz, 4 H), 7.30 (d, 7=5.80 Hz, 1 H), 7.42 (t, 7=7.48 Hz, 1 H), 7.69 (t, 7=7.63 Hz, 1 H), 7.80 (d, 7=7.93 Hz, 1 H), 7.93 (d, 7=5.80 Hz, 1 H), 8.18 (d, 7=8.24 Hz, 1 H); MS mh. 734 (MH+).
Example 124: Preparation of Compound 124
Compound 124 was prepared by following Scheme 1 of Example 120 except that chloroformic acid 2-methoxyethyl ester was used in place ofp-tolyl chloroformate in step 2.
Step 2:
Modifications: 26 mg (0.19 mmol) chloroformic acid 2-methoxyethyI ester used, 87.4 mg product obtained as a sticky yellow oil (87.2% yield): 'H NMR (CD3OD) 8 0.96-1.02 (m, 3 H), 1.05 (s, 9 H), 1.16-1.18 (m, 2 H), 1.40 (dd, 7=9.46, 5.19 Hz, 1 H), 1.85 (dd, 7=7.93,5.19 Hz, 1 H), 2.15 (q, 7=8.75 Hz, 1 H), 2.40 (ddd, 7=13.89,10.07, 4.12 Hz, 1 H), 2.65 (dd, 7=13.58,7.17 Hz, 1 H), 2.90 (ddd, 7=12.89, 8.16,4.88 Hz, 1 H), 3.27 (s, 3 H), 3.36-3.44 (m, 2 H), 3.81-3.84 (m, 1 H), 3.92-3.96 (m, 1 H),4.12 (dd, 7=11.60, 3.36 Hz, 1 H), 4.44 (d, 7=11.60 Hz, 1 H), 4.57 (dd, 7=9.46,7.93 Hz, 1 H), 5.07 (d, 7=10.38 Hz, 1 H), 5.25 (d, 7=17.09 Hz, 1 H), 5.80 (ddd, 7=17.32,9.77, 9.54 Hz, 1 H), 5.87 (s, 1 H), 7.32 (d, 7=5.80 Hz, 1 H), 7.55 (t, 7=7.32 Hz, 1 H), 7.70 (t, 7=7.48 Hz, 1 H), 7.80 (d, 7=7.93 Hz, 1 H), 7.96 (d, 7=5.80 Hz, 1 H), 8.19 (d, 7=8.24 Hz, 1 H); MS m/z 686 (MH+).
Compound 125 was prepared by following Scheme 1 of Example 120 except that neopentyl chloroformate was used in place of p-tolyl chloroformate in step 2.
Step 2:
Modifications: 29 mg (0.19 mmol) neopentyl chloroformate used, 57.4 mg product obtained as a yellow glassy solid (56.2% yield): 'H NMR (CD3OD) 5 0.83 (s, 9 H), 1.05 (d, 7=2.44 Hz, 9 H), 1.07-1.09 (m, 2 H), 1.23-1.27 (m, 2 H), 1.43-1.46 (m, 1 H), 1.87-1.90 (m, 1 H), 2.21-2.25 (m, 1 H), 2.29-2.33 (m, 1 H), 2.61-2.65 (m, 1 H), 2.92-
2.96 (m, 1 H), 3.42 (d, 7=10.07 Hz, 1 H), 3.56 (d, 7=10.07 Hz, 1 H), 4.09-4.11 (m, 1 H), 4.33 (d, 7=9.16 Hz, 1 H), 4.43 (d, 7=11.29 Hz, 1 H), 4.54-4.57 (m, 1 H), 5.12 (d, 7=10.07 Hz, 1 H), 5.30 (d, 7=17.40 Hz, 1 H), 5.73-5.80 (m, 1 H), 5.88 (s, 1 H), 7.33 (d, 7=5.49 Hz, 1 H), 7.53 (m, 1 H), 7.71 (t, 7=6.87 Hz, 1 H), 7.81 (d, 7=7.93 Hz, 1 H), 7.97 (d, 7=5.80 Hz, 1 H), 8.19 (d, 7=7.63 Hz, 1 H); MS m/z 698 (MH+).
Example 126: Preparation of Compound 126
Compound 126 was prepared by following Scheme 1 of Example 120 except that 2-fluoroethyl chloroformate was used in place of p-io\y\ chloroformate in step 2.
Modifications: 24 mg (0.19 mmol) 2-fluoroethyl chloroformate used, 58.9 mg product obtained as a yellow glassy solid (59.8% yield): 'H NMR (CD3OD) 5 1.05 (d, 7=2.14 Hz, 9 H), 1.07-1.09 (m, 2 H), 1.22-1.27 (m, 2 H), 1.42-1.45 (m, 1 H), 1.87-1.90 (m, 1 H), 2.24 (q, 7=8.75 Hz, 1 H), 2.28-2.33 (m, 1 H), 2.63 (dd, 7=13.43, 6.41 Hz, 1 H), 2.92-2.96 (m, 1 H), 3.92-4.10 (m, 3 H), 4.31-4.37 (m, 2 H), 4.42-4.46 (m, 2 H), 4.54-4.57 (m, 1 H), 5.12 (d, 7=10.38 Hz, 1 H), 5.29 (d, 7=17.09 Hz, 1 H), 5.71-5.79 (m, 1 H), 5.88 (s, 1 H), 7.33 (d, 7=5.80 Hz, 1 H), 7.55 (t, 7=7.17 Hz, 1 H), 7.71 (m, 1 H), 7.81 (d, 7=7.93 Hz, 1 H), 7.96 (d, 7=5.80 Hz, 1 H), 8.19 (d, 7=7.63 Hz, 1 H); MS m/z 674 (MH4).
Compound 127 was prepared by following Scheme 1 of Example 120 except that 2-methoxyphenyl chloroformate was used in place of p-tolyl chloroformate in step 2.
Step 2:
Modifications: 35 mg (0.19 mmol) 2-methoxyphenyl chloroformate used, 97.6 mg
oroduct obtained as a stickv vellow oil (91.0 % yield): MS m/z 734 (MIT).
fc V V — .
Compound 128 was prepared by following Scheme 1 of Example 120 except that 2-(-HJf^-menthyl chloroformate was used in place of p-tolyl chloroformate in step 2.
Step 2:
Modifications: 42 mg (0.19 rnmol) (-)-(/7?>menthyl chloroformate used, 69.1 mg
product obtained as a white glassy solid (61.1 % yield): MS m/z 766 (MH1).
Compound 129 was prepared by following Scheme 1 of Example 120 except that hexyl chloroformate was used in place of p-tolyl chloroformate in step 2.
Step 2:
Modifications: 31 mg (0.19 mmol) hexyl chloroformate used, 66.7 mg product obtained as a yellow glassy solid (64.1 % yield): *H NMR (CD3OD) 8 0.87-0.99 (m, 5 H), 1.05 (s, 9 H), 1.07-1.09 (m, 2 H), 1.22-1.28 (m, 6 H), 1.43-1.48 (m, 3 H), 1.88 (dd, 7=8.24,5.49 Hz, 1 H), 2.24 (q, 7=8.85 Hz, 1 H), 2.28-2.33 (m, 1 H), 2.63 (dd, 7=14.34, 7.63 Hz, 1 H), 2.92-2.97 (m, 1 H), 3.72 (dt, 7=10.61,6.60 Hz, 1 H), 3.81-3.86 (m, 1 H), 4.10 (dd, 7=11.60,3.36 Hz, 1 H), 4.32 (d, 7=8.85 Hz, 1 H), 4.43 (d, 7=11.90 Hz, 1 H), 4.55 (dd, 7=9.77,7.32 Hz, 1 H), 5.13 (d, 7=10.38 Hz, 1 H), 5.30 (d, 7=17.O9 Hz, 1 H), 5.76 (ddd, 7=17.09,10.07,9.16 Hz, 1 H), 5.89 (s, 1 H), 7.33 (d,
.7=5.80 Hz, 1 H), 7.54 (t, 7=7.48 Hz, 1 H), 7.69-7.72 (m, 1 H), 7.81 (d, 7=8.24 Hz, 1 H), 7.97 (d, 7=6.10 Hz, 1 H), 8.20 (d, 7=8.24 Hz, 1 H); MS m/z 112 (MH+).
Example 130: Preparatio
A solution of Compound 23 (see Example 23) (1.50g, 2.19 mmol) in DCM (50 mL) and trifluoroacetic acid (50 mL) was stirred for 3 h at rt. The mixture was concentrated in vacua to a viscous residue, and was then dissolved in 1,2-dichloroethane and again concentrated in vacua to give the desired bis-trifluoroacetic acid salt product as an off-white glassy solid (quantitative). The material was used directly in the next step without purification.
Step 2:
A mixture of the product from step 1 (118 mg, 0.146 mmol), tert-butyl acetic acid (22 mg, 0.19 mmol), HATU (72 mg, 0.19 mmol) and W-methylmorpholine (59 mg, 0.58 mmol) in 1,2-dichloroethane was stirred for 24 h at rt. The reaction mixture was washed with pH = 4 buffer solution (3x3 mL), and the washes were back-extracted with 1,2-dichloroethane (3 mL). The organic phases were combined and concentrated in vacua. The crude product was then dissolved in MeOH and purified by reverse phase preparative HPLC to give the title compound (Compound 130) as a slightly yellow glassy solid (43.4 mg, 43.5% yield): 'H NMR (CD3OD) 50.82 (d, 7=1.83 Hz, 9 H), 1.06 (d, 7=2.14 Hz, 9 H), 1.07-1.10 (m, 2 H), 1.22-1.28 (m, 2 H), 1.43-1.46 (m, 1 H), 1.87-1.90 (m, 1 H), 1.99 (d, 7=1.83 Hz, 2 H), 2.20-2.26 (m, 1 H), 2.27-2.33 (m, 1 H), 2.59-2.64 (m, 1 H), 2.93-2.97 (m, 1 H), 4.12-4.14 (m, 1 H), 4.42 (d, 7=11.60 Hz, 1 H), 4.51-4.55 (m, 1 H), 4.67 (dd, 7=9.31,1.98 Hz, 1 H), 5.11-5.14 (m, 1 H), 5.29 (d, 7=17.40 Hz, 1 H), 5.72-5.80 (m, 1 H), 5.89 (d, 7=1.83 Hz, 1 H), 7.32 (dd, 7=5.80,2.14 Hz, 1 H), 7.52-7.55 (m, 1 H), 7.69-7.72 (m, 1 H), 7.81 (d, 7=8.24 Hz, 1 H), 7.96 (dd, 7=5.80,1.83 Hz, 1 H), 8.17 (d, 7=8.24 Hz, 1 H); MS m/z 682 (MH+).
Compound 131 was prepared by following Scheme 1 of Example 130 except that methoxyacetic acid was used in place of tert-butyl acetic acid in step 2.
Step 2:
Modifications: 17 mg (0.19 mmol) methoxyacetic acid used, 49.9 mg product obtained as a slightly yellow glassy solid (52.0 % yield): JH NMR (CD3OD) 5 1.05-1.08 (m, 11 H), 1.24-1.26 (m, 2 H), 1.45 (ddd, 7=9.31, 5.34,3.66 Hz, 1 H), 1.88 (ddd,
/=.«. qO S 10 q 81 R7 1 H) 991-9 97 (m 1 HV9 9O 9 -*
H), 2.91-2.97 (m, 1 H), 3.34 (d, 7=3.66 Hz, 3 H), 3.69 (dd, 7=15.26,3.66 Hz, 1 H), 3.81-3.85 (m, 1 H), 4.15 (dt, 7=11.67,3.62 Hz, 1 H), 4.35 (d, 7=11.90 Hz, 1 H), 4.55 (ddd, 7=10.30,6.94,3.20 Hz, 1 H), 4.66 (dd, 7=9.61, 3.51 Hz, 1 H), 5.11-5.14 (m, 1 H), 5.28-5.32 (m, 1 H), 5.73-5.81 (m, 1 H), 5.90 (d, 7=3.36 Hz, 1 H), 7.33 (dd, 7=5.65, 3.20 Hz, 1 H), 7.54-7.58 (m, 1 H), 7.69-7.73 (m, 1 H), 7.80-7.82 (m, 1 H), 7.95-7.97 (m, 1 H), 8.15 (dd, 7=8.39, 2.59 Hz, 1 H); MS m/z 656 (MIT).
Compound 132 was prepared by following Scheme 1 of Example 130 except that methoxypropionic acid was used in place of /erf-butyl acetic acid in step 2.
Step 2:
Modifications: 20 mg (0.19 mmol) methoxypropionic acid used, 50.0 mg product obtained as a yellow glassy solid (51.1 % yield): 'H NMR (CD3OD) 8 1.06 (d, 7=1.83 Hz, 9 H), 1.07-1.09 (m, 2 H), 1.23-1.27 (m, 2 H), 1.44 (ddd, 7=9.38, 5.26, 1.83 Hz, 1 H), 1.87-1.90 (m, 1 H), 2.21-2.27 (m, 1 H), 2.29-2.33 (m, 2 H), 2.40-2.46 (m, 1 H), 2.59-2.64 (m, 1 H), 2.92-2.97 (m, 1 H), 3.25 (d, 7=1.83 Hz, 3 H), 3.45-3.54 (m, 2 H), 4.12-4.16 (m, 1 H), 4.37 (d, 7=11.60 Hz, 1 H), 4.52-4.55 (m, 1 H), 4.65 (dd, 7=9.16,1.83 Hz, 1 H), 5.12 (d, 7=10.38 Hz, 1 H), 5.30 (d, 7=17.40 Hz, 1 H), 5.72-5.80 (m, 1 H), 5.89 (s, 1 H), 7.33 (dd, 7=5.65,1.98 Hz, 1 H), 7.54-7.58 (m, 1 H), 7.69-7.73 (m, 1 H), 7.81 (d, 7=8.24 Hz, 1 H), 7.96 (dd, 7=6.10,1.83 Hz, 1 H), 8.18 (d, 7=8.24 Hz, 1 H); MS m/z 670 (MH*).
Compound 133 was prepared by following Scheme 1 of Example 130 except that (S,)-l,4-benzodioxane-2-carboxylic acid was used in place of tert-butyl acetic acid in step 2.
Step 2:
Modifications: 35 mg (0.19 mmol) (SH,4-benzodioxane-2-carboxylic acid used, 54.0 mg product obtained as a slightly yellow glassy solid (49.5 % yield): *H NMR
1.31 (m, 1 H), 1.45-1.49 (m, 1 H), 1.86-1.90 (m, 1 H), 2.21-2.25 (m, 1 H), 2.28-2.34
(m, 1 H), 2.59-2.65 (m, 1 H), 2.90-2.94 (m, 1 H), 4.12-4.17 (m, 2 H), 4.32 (d,
7=11.90 Hz, 1 H), 4.35-4.39 (m, 1 H), 4.55-4.61 (m, 3 H), 5.11-5.14 (m, 1 H), 5.28-
5.31 (m, 1 H), 5.75-5.83 (m, 1 H), 5.90 (d, 7=3.66 Hz, 1 H), 6.80-6.89 (m, 3 H), 7.03-
7.07 (m, 1 H), 7.32-7.34 (m, 1 H), 7.55-7.58 (m, 1 H), 7.68-7.72 (m, 1 H), 7.80-7.82
(m, 1 H), 7.96-7.98 (m, 1 H), 8.15-8.18 (m, 1 H); MS /n/z 746 (MH+).
A mixture of the product from Example 11, Step 5 (100 mg, 0.172 mmol), N-a-ter/-butoxycarbonyl-L-phenylglycine (45.3 mg, 0.180 mmol), HATU (84.9 mg, 0.223 mmol), and tf-methylmorpholine (87.0 mg, 0.859 mmol) in DMF (1.0 mL) was stirred at rt for 18 h. The mixture was purified directly by reverse phase preparative HPLC to give 29.7 mg (23.6% yield) of Compound 134 as a white powder: 'H NMR (CD3OD) 8 0.97-1.07 (m, 2 H), 1.12-1.17 (m, 1 H), 1.22-1.32 (m, 2 H), 1.38 (s, 9 H), 1.90 (dd, 7=8.09,5.34 Hz, 1 H), 2.20-2.28 (m, 2 H), 2.54 (dd, 7=13.58, 6.56 Hz, 1 H), 2.85-2.89 (m, 7=8.24 Hz, 1 H), 3.50 (d, 7=10.99 Hz, 1 H), 3.93 (s, 3 H), 4.11
(d, 7=11.60 Hz, 1 H), 4.63 (dd, 7=9.46, 7.32 Hz, 1 H), 5.13 (dd, .7=10.38,1.53 Hz, 1 H), 5.32 (d, 7=17.09 Hz, 1 H), 5.47 (s, 1 H), 5.74-5.84 (m, 2 H), 7.16-7.19 (m, 1 H), 7.25 (d, 7=5.80 Hz, 1 H), 7.32-7.43 (m, 6 H), 7.86 (d, 7=5.80 Hz, 1 H), 8.13 (d, 7=9.16 Hz, 1 H); MS m/z 734 (MH*).
Example 135: Preparation of Compound 135
Compound 135 was prepared by following Scheme 1 of Example 134 except that N-a-te/t-butoxycarbonyl-erythro-DL-p-methylphenylalanine was used in place ofN-a.-/e/t-butoxycarbonyl-L-phenylglycine in step 1. Compound 135 was prepared from a mixture of Af-
Step 1:
Modifications: 50.4 mg (0.180 mmol) Af-a-te/t-butoxycarbonyl-erythro-DL-p-
methylphenylalanine used, 29.7 mg product obtained as a white powder (22.7 %
yield): !H NMR (CD3OD) 8 1.11 (d, 7=7.93 Hz, 2 H), 1.15 (d, 7=6.10 Hz, 3 H), 1.24-1.32 (m, 11 H), 1.44 (dd, 7=9.16, 5.19 Hz, 1 H), 1.90-1.94 (m, 1 H), 2.25-2.29 (m, 1 H), 2.36 (t, 7=13.28 Hz, 1 H), 2.62 (dd, 7=13.58,7.17 Hz, 1 H), 2.98-3.02 (m, 1 H), 3.20-3.24 (m, 1 H), 3.91 (s, 3 H), 4.11 (dd, 7=11.60,3.05 Hz, 1 H), 4.51 (d, 7=10.68 Hz, 1 H), 4.57 (dd, 7=10.07,7.32 Hz, 1 H), 4.63 (d, 7=12.21 Hz, 1 H), 5.14 (d, 7=10.07 Hz, 1 H), 5.32 (d, 7=16.79 Hz, 1 H), 5.76-5.84 (m, 1 H), 5.88 (s, 1 H), 7.08 (dd, 7=8.70,1.68 Hz, 1 H), 7.16-7.18 (m, 2 H), 7.23-7.27 (m, 5 H), 7.89 (d, 7=5.80 Hz, 1 H), 8.09 (d, 7=9.46 Hz, 1 H); MS m/z 762 (MH*).
Example 1Compound 136
Compound 136" was prepared by following Scheme 1 of Example 134 except that N-a-te/t-butoxycarbonyl-erythro-DL-p-methylphenylalanine was used in place ofN-a-terr-butoxycarbonyl-L-phenylglycine in step 1. Compound 136 was prepared from a mixture of AT-tert-butoxycarbonyl-erythro DL (3-methylphenylalanine and the resulting two diastereomers were separated by reverse phase preparative HPLC. This compound is the single isomer which eluted second from the preparative HPLC column. The exact stereochemistry at the p-methyl phenylalanine portion of the molecule is unknown.
Step 1:
Modifications: 50.4 mg (0.180 mmol) //-cx-te/t-butoxycarbonyl-erythro-DL-{3-methylphenylalanine used, 26.3 mg product obtained as a white powder (20.1 % yield): !H NMR (CD3OD) 5 1.04 (s, 1 H), 1.13 (d, 7=6.71 Hz, 3 H), 1.12-1.17 (m, 2 H), 1.30 (s, 9 H), 1.33-1.36 (m, 1 H), 1.41 (dd, 7=9.46, 5.19 Hz, 1 H), 1.87 (dd, 7=7.78, 5.34 Hz, 1 H), 2.29 (q, 7=8.85 Hz, 1 H), 2.36 (ddd, 7=13.81, 9.99,4.27 Hz, 1 H), 2.54 (dd, 7=13.58,7.17 Hz, 1 H), 3.00-3.04 (m, 1 H), 3.05-3.08 (m, 1 H), 3.80 (d, 7=11.90 Hz, 1 H), 3.94 (s, 3 H), 4.10 (dd, 7=12.05,3.81 Hz, 1 H), 4.53-4.57 (m, 1 H), 4.59 (d, 7=8.24 Hz, 1 H), 5.14 (d, 7=10.38 Hz, 1 H), 5.34 (d, 7=17.09 Hz, 1 H), 5.78-5.85 (m, 2 H), 6.75 (t, 7=7.32 Hz, 1 H), 7.03 (t, 7=7.48 Hz, 2 H), 7.12 (s, 1 H), 7.14 (s, 1 H), 7.19 (dd, 7=9.31,1.68 Hz, 1 H), 7.22 (s, 1 H), 7.28 (d, 7=6.10 Hz, 1 H), 7.89 (d, 7=5.80 Hz, 1 H), 8.03 (d, 7=8.85 Hz, 1 H); MS m/z 762 (NOT).
Example 137: Preparation of Compound 137
Step 1:
A mixture of the product from Example 11, Step 5 (100 mg, 0.172 mmol), N-a-re/?-butoxycarbonyl-L-aspartic acid 4-benzyl ester (59.5 mg, 0.180 mraol), HATU (84.9 mg, 0.223 mmol), and JV-methylmorpholine (87.0 mg, 0.859 mmol) in DCM (3.0 mL) was stirred at rt for 18 h. The reaction mixture was washed with pH = 4 buffer solution (3x3 mL), and the washes were back-extracted with DCM (3 mL). The organic phases were combined and concentrated in vacua. The crude product was then dissolved in MeOH and purified by reverse phase preparative HPLC to give Compound 137 as a slightly off-white glassy solid (26.0 mg, 18.8% yield): !H NMR (CD3OD) 5 0.95-1.01 (m, 2 H), 1.16 (s, 9 H), 1.22-1.29 (m, 2 H), 1.44 (dd, 7=9.46, 5.19 Hz, 1 H), 1.86 (dd, 7=7.93, 5.19 Hz, 1 H), 2.26 (q, 7=8.85 Hz, 1 H), 2.32-2.37 (m, 1 H), 2.61 (dd, 7=13.73,7.32 Hz, 1 H), 2.66 (dd, 7=16.48, 6.10 Hz, 1 H), 2.89 (ddd, 7=12.67,8.09,4.88 Hz, 1 H), 3.05 (dd, 7=16.63, 8.39 Hz, 1 H), 3.92 (s, 3 H), 4.04-4.07 (m, 1 H), 4.47 (d, 7=11.90 Hz, 1 H), 4.52-4.56 (m, 1 H), 4.75 (dd, 7=8.24, 6.41 Hz, 1 H), 5.12-5.14 (m, 1 H), 5.14 (s, 2 H), 5.31 (d, 7=17.09 Hz, 1 H), 5.75-5.82 (m, 2 H), 7.12 (d, 7=9.16 Hz, 1 H), 7.18 (d, 7=2.14 Hz, 1 H), 7.24 (d, 7=5.80 Hz, 1 H), 7.31-7.33 (m, 1 H), 7.36 (t, 7=7.32 Hz, 2 H), 7.39 (s, 1 H), 7.41 (s, 1 H), 7.88 (d, 7=6.10 Hz, 1 H), 8.10 (d, 7=9.16 Hz, 1 H); MS m/z 806 (MH+).
Compound 138 was prepared by following Scheme 1 of Example 137 except that N-tert-butoxycarbonyl-L-aspartic acid4-methyl ester was used in place of N-a-tert-butoxycarbonyl-L-aspartic acid4-benzyl ester in step 1.
Step 1:
Modifications: 45.5 mg (0.180 mmol) W-tert-butoxycarbonyl-L-aspartic acid 4-methyl ester used, 93.5 mg product obtained as an off-white glassy solid (74.6 % yield): 'H NMR (CD3OD) 5 1.07-1.09 (m, 2 H), 1.17 (s, 9 H), 1.20-1.29 (m, 2 H), 1.41.1.44 (m, i H), 1.84-1.86 (m, 1 H), 2.26 (q, 7=8.85 Hz, 1 H), 2.33-2.38 (m, 1 H), 2.58-2.64 (m, 2 H), 2.92-3.02 (m, 2 H), 3.69 (s, 3 H), 3.92 (s, 3 H), 4.15 (dd, 7=11.44,2.29 Hz, 1 H), 4.49-4.56 (m, 2 H), 4.72-4.76 (m, 1 H), 5.13 (d, 7=10.38 Hz, 1 H), 5.32 (d, 7=17.09 Hz, 1 H), 5.74-5.82 (m, 1 H), 5.87 (s, 1 H), 7.12 (d, 7=9.16 Hz, 1 H), 7.18 (s, 1 H), 7.24 (d, 7=5.80 Hz, 1 H), 7.88 (dd, 7=5.80, 0.92 Hz, 1 H), 8.10 (d, 7=8.85 Hz, 1 H); MS m/z 730 (MH+).
Compound 139 was prepared by following Scheme 1 of Example 137 except that N-tert-butoxycarbonyl-L-aspartic acid 4-tert-butyl ester was used in place ofN-CL-tert-butoxycarbonyl-L-aspartic acid 4-benzyl ester in step 1.
Step 1:
Modifications: 52.2 mg (0.180 mmol) W-tert-butoxycarbonyl-L-aspartic acid 4-tert-butyl ester used, 125 mg product obtained as an off-white glassy solid (99.8 % yield): 'HNMR (CD3OD) 8 1.08-1.10 (m, 2 H), l.l? (s, 9 H), l.il-1.29 (m, 2 H), 1.46 (s, 10 H), 1.82 (dd, 7=7.78, 5.34 Hz, 1 H), 2.26 (q, 7=8.75 Hz, 1 H), 2.32-2.38 (m, 1 H), 2.51 (dd, 7=16.33,7.17 Hz, 1 H), 2.63 (dd, 7=14.04,7.02 Hz, 1 H), 2.89 (dd, 7=16.48,7.63 Hz, 1 H), 2.92-2.98 (m, 1 H), 3.92 (s, 3 H), 4.15 (dd, 7=11.60, 3.05 Hz, 1 H), 4.50-4.57 (m, 2 H), 4.70-4.75 (m, 1 H), 5.13 (dd, 7=10.38,1.53 Hz, 1 H), 5.32 (d, 7=17.40 Hz, 1 H), 5.76-5.83 (m, 1 H), 5.87 (s, 1 H), 7.13 (dd, 7=8.85,1.53 Hz, 1 H), 7.18 (d, 7=2.14 Hz, 1 H), 7.25 (d, 7=5.80 Hz, 1 H), 7.88 (d, 7=5.80 Hz, 1 H), 8.10 (d, 7=9.16 Hz, 1 H); MS m/z 772 (MH+).
Compound 138 (50.0 mg, 0.0685 mmol) was dissolved in a mixture of THF (1 mL), MeOH (1 mL), and l.OM aqueous NaOH (0.137 mL, 0.137 mmol). After 3 h, the reaction mixture was neutralized by the addition of l.OM aqueous HC1 (0.137 mL, 0.137 mmol). The crude mixture was concentrated in vacua, then pH = 4 buffer solution (3 mL) and DCM (3 mL) were added and the mixture was shaken. The layers were separated and the aqueous layer was further extracted with DCM (2x1 mL). The organic phases were combined, dried over anhydrous MgSO4, filtered and concentrated in vacua to give 48.0 mg (97.9% yield) of Compound 140 as an off white glassy solid: 'H NMR (CD3OD) 5 1.04-1.07 (m, 2 H), 1.17 (s, 9 H), 1.22-1.25 (m, 2 H), 1.38 (dd, /=9.31,5.34 Hz, 1 H), 1.78 (dd, 7=7.78,5.34 Hz, 1 H), 2.30 (q,
7=8.75 Hz, 1 H), 2.37-2.42 (m, 1 H), 2.48 (dd, 7=15.87,4.58 Hz, 1 H), 2.72 (dd, 7=13.12, 7.63 Hz, 1 H), 2.88 (dd, 7=15.72, 10.53 Hz, 1 H), 2.90-2.95 (m, 1 H), 3.92 (s, 3 H), 4.21 (dd, 7=11.44,2.90 Hz, 1 H), 4.57 (t, 7=8.70 Hz, 1 H), 4.624.65 (m, 2 H), 5.10 (d, 7=10.68 Hz, 1 H), 5.34 (d, 7=17.09 Hz, 1 H), 5.69-5.76 (m, 1 H), 5.83 (s, 1 H), 7.10 (d, 7=9.16 Hz, 1 H), 7.17 (s, 1 H), 7.23 (d, 7=6.10 Hz, 1 H), 7.88 (d, 7=6.10 Hz, 1 H), 8.12 (d, 7=8.85 Hz, 1 H); MS mfi 716 (MHT).
(Figure Removed)
Step 1:
The product of Example 55, Step 1 (65 mg, 0.0947mmol), N,N'-disuccinimidyl carbonate (41.0 mg, 0.142 mmol) and MW-diisopropylethylamine (30.6 mg, 0.237 mmol) were combined with anhydrous THF (1 mL) and the resulting suspension was heated to 80 °C in a microwave reactor for 15 min. Upon cooling to rt, this crude mixture was used directly in the next step.
Step 2:
The crude reaction mixture from step 1 was treated with a mixture of L-valine methyl ester hydrochloride (159 mg, 0.947 mmol) and Af,Af-diisopropylethylamine (122 mg, 0.947 mmol) in anhydrous THF (2 mL). The resulting mixture was stirred for 18 h at rt. Solvent was removed in vacua, and the residue was taken up in DCM (2 mL) and washed with pH = 4 buffer solution (3x2 mL). The buffer washes were
combined and back-extracted with DCM (2 mL). The combined DCM phases were concentrated in vacua, and the resulting residue was dissolved in MeOHand purified by reverse phase preparative HPLC to give 38.1 mg (52.2% yield) of Compound 141 as a white powder: 'H NMR (CD3OD) 8 0.83 (dd, 7=6.87,3.81 Hz, 6 H), 1.06 (s, 11 H), 1.21-1.26 (m, 2 H), 1.41 (dd, 7=9.46, 5.49 Hz, 1 H), 1.87 (dd, .7=8.09,5.34 Hz, 1 H), 1.95-2.02 (m, 1 H), 2.21 (q, 7=8.85 Hz, 1 H), 2.29 (ddd, 7=13.89,9.92,4.27 Hz, 1 H), 2.60 (dd, 7=13.73,7.02 Hz, 1 H), 2.91-2.97 (m, 1 H), 3.67 (s, 3 H), 3.93 (s, 3 H), 4.00 (d, 7=5.49 Hz, 1 H), 4.09 (dd, 7=11.90, 3.97 Hz, 1 H), 4.40-4.43 (m, 2 H), 4.52 (dd, 7=10.07, 7.02 Hz, 1 H), 5.11 (dd, 7=10.38,1.53 Hz, 1 H), 5,28 (dd,7=17.09, 1.22 Hz, 1 H), 5,75 (ddd, 7=17.17,10.15, 9.00 Hz, 1 H), 5.83 (s, 1 H), 7.11 (dd, 7=9.16, 2.44 Hz, 1 H), 7.18 (d, 7=2.44 Hz, 1 H), 7.24 (d, 7=5.80 Hz, 1 H), 7.87 (d, 7=6.10 Hz, 1 H), 8.10 (d, 7=8.85 Hz, 1 H); MS ni/z 111 (MH+).
Compound 142
Compound 142 was prepared by following Scheme 1 of Example 141 except that D-valine methyl ester hydrochloride was used in place of L-valine methyl ester hydrochloride in step 2.
Step 2:
Modifications: 159 mg (0.947 mmol) D-valine methyl ester hydrochloride used, 23.0 mg product obtained as a white powder (31.5 % yield): 'H NMR (CD3OD) 8 0.88 (dd, 7=13.89,6.87 Hz, 6 H), 1.06 (s, 9 H), 1.07-1.09 (m, 2 H), 1.23-1.27 (m, 2 H), 1.41 (dd, 7=9.46,5.49 Hz, 1 H), 1.88 (dd, 7=7.93, 5.49 Hz, 1 H), 2.01-2.07 (m, 1 H), 2.23 (q, 7=9.05 Hz, 1 H), 2.31 (ddd, 7=14.11,9.99,4.27 Hz, 1 H), 2.63 (dd, 7=13.89, 7.17 Hz, 1 H), 2.93-2.98 (m, 1 H), 3.62 (s, 3 H), 3.96 (s, 3 H), 4.03 (d, 7=5.19 Hz, 1 H), 4.09 (dd, 7=11.75,3.81 Hz, 1 H), 4.38 (s, 1 H), 4.48-4.54 (m, 2 H), 5.12 (dd, 7=10.38, 1.22 Hz, 1 H), 5.29 (dd, 7=17.24,1.07 Hz, 1 H), 5.70-5.77 (m, 1 H), 5.83 (s, 1 H), 7.22 (dd, 7=9.00,2.59 Hz, 1 H), 7.25 (d, 7=2.44 Hz, 1 H), 7.35 (d, 7=6.10 Hz, 1 H), 7.87 (d, 7=6.10 Hz, 1 H), 8.16 (d, 7=9.16 Hz, 1 H); MS m/z 771 (NOT).
Example 143: Preparation of Compound 143
Compound 143 was prepared by following Scheme 1 of Example 137 except that N-terf-butoxycarbonyl-L-cyclohexylglycine was used in place ofN-a-tert~ butoxycarbonyl-L-aspartic acid 4-benzyl ester in step 1.
Step 1:
Modifications: 46.2 mg (0.180 mmol) W-tert-butoxycarbonyl-L-cyclohexylglycine used, 93.9 mg product obtained as a white powder (73.8 % yield): 'H NMR (CD3OD) 5 1.04-1.08 (dd, 7=7.78, 2.29 Hz, 4 H), 1.19-1.26 (m, 4 H), 1.25 (s, 9 H),
1.41 (dd, 7=9.46,5.19 Hz, 1 H), 1.63-1.82 (m, 7 H), 1.88 (dd, 7=7.93, 5.49 Hz, 1 H), 2.22 (q, 7=9.05 Hz, 1 H), 2.32-2.37 (m, 1 H), 2.59 (dd, 7=13.58, 6.87 Hz, 1 H), 2.91-2.96 (m, 1 H), 3.92 (s, 3 H), 4.05 (dd, 7=11.75,3.20 Hz, 1 H), 4.09 (d, 7=8.85 Hz, 1 H), 4.47 (d, 7=11.90 Hz, 1 H), 4.53 (dd, 7=10.22,7.17 Hz, 1 H), 5.11 (d, 7=10.38 Hz, 1 H), 5.29 (d, 7=16.79 Hz, 1 H), 5.79 (ddd, 7=16.86,9.92,9.54 Hz, 1 H), 5.84 (s, 1 H), 7.10 (d, 7=8.85 Hz, 1 H), 7.17 (d, 7=1.53 Hz, 1 H), 7.24 (d, 7=5.80 Hz, 1 H), 7.88 (d, 7=6.10 Hz, 1 H), 8.09 (d, 7=8.85 Hz, 1 H); MS m/z 740 (MH+).
Example 144: Preparation of Compound 144
Compound 144 was prepared by following Scheme 1 of Example 141 except that the scale was increased and that glycine methyl ester hydrochloride was used in place of L-valine methyl ester hydrochloride in step 2.
Step 1:
Modifications: 100 mg (0.146 mmol) of the product of Example 55, Step 1; 62.2 mg (0.219 mmol) W.AT-disuccinimidyl carbonate, 47.0 mg (0.364 mmol) N,N-diisopropylethylamine used.
Step 2:
Modifications: 183 mg (1.46 mmol) glycine methyl ester hydrochloride, 188 mg (1.46 mmol) W.N-diisopropylethylamine used, 56.3 mg product obtained as a white powder (52.9 % yield): 'HNMR (CD3OD) 8 1.01-1.04 (m, 2H), 1.05 (s, 9H), 1.17-1.21 (m, 2 H), 1.40 (dd, 7=9.46, 5.49 Hz, 1 H), 1.85 (dd, 7=7.78,5.34 Hz, 1 H), 2.18 (q, 7=8.55 Hz, 1 H), 2.33 (ddd, 7=13.89, 9.92,4.27 Hz, 1 H), 2.61 (dd, 7=13.73, 7.32 Hz, 1 H), 2.89-2.94 (m, 1 H), 3.65 (s, 3 H), 3.69-3.77 (m, 2 H), 3.92 (s, 3 H), 4.10 (dd, 7=11.75,3.81 Hz, 1 H), 4.40-4.42 (m, 2 H), 4.53 (dd, 7=9.92, 7.17 Hz, 1 H), 5.08 (d, 7=10.38 Hz, 1 H), 5.26 (d, 7=17.09 Hz, 1 H), 5.77 (ddd, 7=17.09, 10.22,9.00 Hz, 1 H), 5.83 (s, 1 H), 7.13 (dd, 7=8.85,2.44 Hz, 1 H), 7.17 (s, 1 H), 7.23 (d, .7=5.80 Hz, 1 H), 7.87 (d, 7=5.80 Hz, 1 H), 8.09 (d, 7=8.85 Hz, 1 H); MS m/z 729 (MB*).
Compound 145 was prepared by following Scheme 1 of Example 141 except that the scale was increased and that L-alanine methyl ester hydrochloride was used in place of L-valine methyl ester hydrochloride in step 2.
Step 1:
Modifications: 100 mg (0.146 mmol) of the product of Example 55, Step 1; 62.2 mg (0.219 mmol) W-disuccinirnidyl carbonate, 47.0 mg (0.364 mmol) N,N-diisopropylethylamine used.
Step 2:
Modifications: 203 mg (1.46 mmol) L-alanine methyl ester hydrochloride, 188 mg (1.46 mmol) A/,W-diisopropylethylamine used, 64.3 mg product obtained as a white powder (59.3 % yield): 'H NMR (CD3OD) 5 0.97-1.02 (m, 2 H), 1.05 (s, 9 H), 1.19 (d, 7=7.02 Hz, 3 H), 1.18-1.22 (m, 2 H), 1.41 (dd, 7=9.46,5.19 Hz, 1 H), 1.86 (dd, 7=8.09, 5.34 Hz, 1 H), 2.19 (q, 7=8.85 Hz, 1 H), 2.32 (ddd, 7=13.81, 9.84,4.43 Hz, 1 H), 2.61 (dd, 7=13.73,7.02 Hz, 1 H), 2.93 (ddd, 7=12.82, 8.09,4.73 Hz, 1 H), 3.65 (s, 3 H), 3.93 (s, 3 H), 3.99 (q, 7=7.22 Hz, 1 H), 4.08 (dd, 7=11.75, 3.81 Hz, 1 H), 4.38 (s, 1 H), 4.42 (d, 7=11.60 Hz, 1 H), 4.53 (dd, 7=10.07,7.32 Hz, 1 H), 5.09 (dd, 7=10.38, 1.53 Hz, 1 H), 5.27 (dd, 7=17.09, 1.22 Hz, 1 H), 5.77 (ddd, 7=17.09,10.07, 9.16 Hz, 1 H), 5.82 (s, 1 H),7.13 (dd, 7=9.16, 2.44 Hz, 1 H), 7.18 (d, 7=2.44 Hz, 1 H), 7.24 (d, 7=5.80 Hz, 1 H), 7.87 (d, 7=5.80 Hz, 1 H), 8.10 (d, 7=9.16 Hz, 1 H); MS m/z 743 (MH+).
Example 146: Preparation of Compound 146
Compound 147 was prepared by following Scheme 1 of Example 141 except that the scale was increased and that L-te/t-leucine methyl ester hydrochloride was used in place of L-valine methyl ester hydrochloride in step 2.
Stepl:
Modifications: 100 rag (0.146 mmol) of the product of Example 55, Step 1; 62.2 mg (0.219 mmol) MAT-disuccinimidyl carbonate, 47.0 mg (0.364 mmol) N,N-diisopropylethylamine used.
Step 2:
Modifications: 265 mg (1.46 mmol) L-te/f-leucine methyl ester hydrochloride, 188 mg (1.46 mmol) W,W-diisopropylethylamine used, 68.3 mg product obtained as a white powder (59.6 % yield): 'H NMR (CD3OD) 5 0.88 (s, 9 H), 0.97-1.03 (m, 2 H), 1.06 (s, 9 H), 1.18-1.24 (m, 2 H), 1.41 (dd, 7=9.46, 5.49 Hz, 1 H), 1.86 (dd, 7=7.93, 5.49 Hz, 1 H), 2.19 (q, 7=8.75 Hz, 1 H), 2.30 (ddd, 7=13.89,10.07, 4.43 Hz, 1 H), 2.60 (dd, 7=13.73,7.32 Hz, 1 H), 2.91-2.96 (m, 1 H), 3.65 (s, 3 H), 3.91 (s, 1 H), 3.93 (s, 3 H), 4.09 (dd, 7=11.60,3.97 Hz, 1 H), 4.38 (s, 1 H), 4.43 (d, 7=11.60 Hz, 1 H), 4.51 (dd, 7=10.07,7.32 Hz, 1 H), 5.10 (dd, 7=10.38,1.53 Hz, 1 H), 5.27 (dd, 7=17.24, 1.37 Hz, 1 H), 5.76 (ddd, 7=17.09, 10.07, 9.16 Hz, 1 H), 5.82 (s, 1 H), 7.12 (dd, 7=9.16,2.44 Hz, 1 H), 7.18 (d, 7=2.14 Hz, 1 H), 7.24 (d, 7=6.10 Hz, 1 H), 7.87 (d, 7=5.80 Hz, 1 H), 8.11 (d, 7=9.16 Hz, 1 H); MS m/z 785 (MH+).
(Figure Removed)
Compound 147 was prepared by following Scheme 1 of Example 141 except that the scale was increased and that L-histidine methyl ester hydrochloride was used in place of L-valine methyl ester hydrochloride in step 2, and the amount of N,N-diisopropylethylamine used in step 2 was doubled.
Step 1:
Modifications: 100 mg (0.146 mmol) of the product of Example 55, Step 1; 62.2 mg (0.219 mmol) MW-disuccinimidyl carbonate, 47.0 mg (0.364 mmol) N,N-diisopropylethylamine used.
Step 2:
Modifications: 352 mg (1.46 mmol) L-histidine methyl ester hydrochloride, 377 mg (2.91 mmol) Af.Af-diisopropylethylamine used, 51.0 mg product obtained as a white powder (43.2 % yield): *H NMR (CD3OD) 8 1.04 (s, 11 H), 1.20-1.22 (m, 2 H), 1.41 (ddd, 7=9.46, 5.34,1.07 Hz, 1 H), 1.86-1.88 (m, 1 H), 2.23 (q, .7=8.75 Hz, 1 H), 2.28-2.33 (m, 1 H), 2.60 (dd, 7=13.73, 7.02 Hz, 1 H), 2.92 (d, .7=6.41 Hz, 2 H), 2.92-2.96 (m, 1 H), 3.64 (s, 3 H), 3.91 (d, 7=1.53 Hz, 3 H), 4.04 (dd, 7=11.90, 3.66 Hz, 1 H), 4.35 (s, 1 H), 4.36-4.41 (m, 2 H), 4.53 (dd, 7=9.77, 7.63 Hz, 1 H), 5.10 (d, 7=10.38 Hz, 1 H), 5.28 (d, 7=17.40 Hz, 1 H), 5.73-5.78 (m, 1 H), 5.81 (s, 1 H), 6.82 (s, 1 H), 7.06-7.09 (m, 1 H), 7.15 (s, 1 H), 7.23 (d, 7=5.80 Hz, 1 H), 7.63 (s, 1 H), 7.87 (dd, 7=5.80, 1.22 Hz, 1 H), 8.08 (d, 7=9.16 Hz, 1 H); MS m/z 809 (MH+).
Compound 148 was prepared by following Scheme 1 of Example 141 except that the scale was increased and that L-valine ethyl ester hydrochloride was used in place of L-valine methyl ester hydrochloride in step 2.
Step 1:
Modifications: 100 mg (0.146 mmol) of the product of Example 55, Step 1; 62.2 mg
diisopropylethylamine used.
Step 2:
Modifications: 265 mg (1.46 mmol) L-valine ethyl ester hydrochloride, 188 mg (1.46 mmol) 7V,#-diisopropylethylamine used, 69.2 mg product obtained as a white powder (60.4 % yield): !H NMR (CD3OD) 5 0.83 (dd, 7=6.71, 5.19 Hz, 6 H), 1.01-1.03 (m, 2 H), 1.06 (s, 9 H), 1.17-1.22 (m, 2 H), 1.23 (t, 7=7.17 Hz, 3 H), 1.40 (dd, 7=9.46, 5.19 Hz, 1 H), 1.86 (dd, 7=8.09, 5.34 Hz, 1 H), 1.95-2.02 (m, 1 H), 2.18 (q, 7=9.05 Hz, 1 H), 2.33 (ddd, 7=13.89,9.92,4.27 Hz, 1 H), 2.60 (dd, 7=13.89,7.17 Hz, 1 H), 2.92 (ddd, 7=12.82, 8.09,4.73 Hz, 1 H), 3.93 (s, 3 H), 3.98 (d, 7=5.19 Hz, 1 H), 4.08-4.17 (m, 3 H), 4.41 (s, 1 H), 4.41-4.43 (m, 1 H), 4.52 (dd, 7=10.07,7.32 Hz, 1 H), 5.09 (dd, 7=10.38,1.53 Hz, 1 H), 5.26 (dd, 7=17.09,1.22 Hz, 1 H), 5.77 (ddd, 7=17.09, 10.07,9.16 Hz, 1 H), 5.82 (s, 1 H), 7.12 (dd, 7=9.16, 2.44 Hz, 1 H), 7.18 (d,
7=2.44 Hz, 1 H), 7.23 (d, 7=6.10 Hz, 1 H), 7.87 (d, 7=6.10 Hz, 1 H), 8.10 (d, 7=9.16 Hz, 1H); MSm/fe785(MH*).
Example 149: Preparation of Compound 149
Compound 149 was prepared by following Scheme 1 of Example 137 except that N-tert-butoxycarbonyl-L-cyclopentylglycine dicyclohexylamine salt was used in place of W-a-terr-butoxycarbonyl-L-aspartic acid 4-benzyl ester in step 1.
Step 1:
Modifications: 76.2 mg (0.180 mmol) W-tert-butoxycarbonyl-L-cyclopentylglycine dicyclohexylamine salt used, 111 mg product obtained as a white powder (89.3 % yield): 'H NMR (CD3OD) 5 0.98 (d, 7=8.24 Hz, 2 HX 1.15-1.18 (m, 2 H), 1.24 (s, 9 H), 1.29-1.32 (m, 7=18.01 Hz, 2 H), 1.38-1.40 (m, 1 H), 1.44 (dd, 7=4.88,1.53 Hz, 1 H), 1.49-1.55 (m, 2 H), 1.62-1.67 (m, 2H), 1.74-1.80 (m, 1 H), 1.85-1.88 (m, 1 H), 2.16 (q, 7=8.75 Hz, 1 H), 2.21-2.26 (m, 1 H), 2.42 (t, 7=11.90 Hz, 1 H), 2.60-2.64 (m,
1 H), 2.89-2.93 (m, 1 H), 3.92 (d, 7=1.53 Hz, 3 H), 4.06-4.11 (m, 2 H), 4.51-4.57 (m,
2 H), 5.07 (d, 7=10.38 Hz, 1 H), 5.25 (d, 7=17.09 Hz, 1 H), 5.78-5.85 (m, 2 H), 7.10
(d, 7=8.85 Hz, 1 H), 7.17 (s, 1 H), 7.23 (d, 7=4.27 Hz, 1 H), 7.88 (dd, 7=5.95, 1.68
Hz, 1 H), 8.10 (d, 7=9.16 Hz, 1 H); MS m/z 726 (MH4).
Compound 150 was prepared by following Scheme 1 of Example 141 except that the scale was increased and that L-valine benzyl ester hydrochloride was used in place of L-valine methyl ester hydrochloride in step 2.
Modifications: 100 mg (0.146 mmol) of the product of Example 55, Step 1; 62.2 mg (0.219 mmol) 7V,W-disuccinimidyl carbonate, 47.0 mg (0.364 mmol) N,N-diisopropylethylamine used.
Step 2:
Modifications: 356 mg (1.46 mmol) L-valine benzyl ester hydrochloride, 188 mg (1.46 mmol) MM-diisopropylethylamine used, 41.0 mg product obtained as a white powder (33.2 % yield): MS m/z 848 (MH+).
Example 151: Preparation of Compound 151
Compound 151 was prepared by following Scheme 1 of Example 141 except that the scale was increased and that L-isoleucine methyl ester hydrochloride was used in place of L-valine methyl ester hydrochloride in step 2.
Step 1:
Modifications: 100 mg (0.146 mmol) of the product of Example 55, Step 1; 62.2 mg (0.219 mmol) ^//'-disuccinimidyl carbonate, 47.0 mg (0.364 mmol) N,N-diisopropylethylamine used.
Step 2:
Modifications: 265 mg (1.46 mmol) L-isoleucine methyl ester hydrochloride, 188 mg (1.46 mmol) MW-diisopropylethylamine used, 75.5 mg product obtained as a white powder (65.9 % yield): ]H NMR (CD3OD) 5 0.78-0.80 (m, 3 H), 0.83-0.84 (m, 3 H), 0.90-0.95 (m, 1 H), 1.01-1.03 (m, 2 H), 1.06 (d, 7=3.05 Hz, 9 H), 1.17-1.21 (m, 2 H), 1.32-1.42 (m, 2 H), 1.68-1.72 (m, 1 H), 1.84-1.87 (m, 1 H), 2.14-2.20 (m, 1 H), 2.30-2.36 (m, 1 H), 2.57-2.62 (m, 1 H), 2.90-2.95 (m, 1 H), 3.66 (d, 7=2.75 Hz, 3 H), 3.92 (d, 7=2.75 Hz, 3 H), 4.05-4.12 (m, 2 H), 4.39-4.42 (m, 2 H), 4.50-4.53 (m, 1 H), 5.07-5.10 (m, 1 H), 5.23-5.28 (m, 1 H), 5.73-5.79 (m, 1 H), 5.81-5.83 (m, 1 H), 7.10-7.13 (m, 1 H), 7.17 (t, 7=2.44 Hz, 1 H), 7.22-7.24 (m, 1 H), 7.85-7.87 (m, 1 H), 8.10 (dd, 7=9.16,2.75 Hz, 1 H); MS m/z 785 (MH+).
Compound 152 was prepared by following Scheme 1 of Example 141 except that the scale was increased and that L-valine te/t-butyl ester hydrochloride was used in place of L-valine methyl ester hydrochloride in step 2.
Modifications: 100 mg (0.146 mmol) of the product of Example 55, Step 1; 62.2 mg (0.219 mmol) W-disuccinimidyl carbonate, 47.0 mg (0.364 mmol) N.N-diisopropylethylamine used.
Step 2:
Modifications: 306 mg (1.46 mmol) L-valine rm-butyl ester hydrochloride, 188 mg (1.46 mmol) M^V-diisopropylethylamine used, 93.5 mg product obtained as a white powder (78.8 % yield): MS m/z 814 (MH4).
Compound 153 was prepared by following Scheme 1 of Example 141 except that the scale was increased and that (SJ-C+J-l-inethoxy-Z-propylamine was use^ in place of L-valine methyl ester hydrochloride in step 2.
Step 1:
Modifications: 100 mg (0.146 mmol) of the product of Example 55, Step 1; 62.2 mg (0.219 mmol) tyAT-disuccinimidyl carbonate, 47.0 mg (0.364 mmol) N,N-diisopropylethylamine used.
Step 2:
Modifications: 130 mg (1.46 mmol) (SH+,)-l-methoxy-2-propylamine, 188 mg (1.46 mmol) A'.A^-diisopropylethylarnine used, 50.3 mg product obtained as a white powder (47.3 % yield): JH NMR (CD3OD) 6 0.96 (d, 7=7.02 Hz, 3 H), 0.99-1.01 (m, 2 H), 1.04 (s, 9 H), 1.15-1.18 (m, 2 H), 1.39 (dd, 7=9.61,5.34 Hz, 1 H), 1.84 (dd, 7=7.93,5.19 Hz, 1 H), 1.93 (s, 3 H), 2.15 (q, 7=9.05 Hz, 1 H), 2.37 (ddd, 7=13.96, 9.84,4.58 Hz, 1 H), 2.61 (dd, 7=14.04,7.32 Hz, 1 H), 2.90 (ddd, 7=12.89,8.16, 4.88 Hz, 1 H), 3.19-3.28 (m, 2 H), 3.64-3.67 (m, 1 H), 3.92 (s, 3 H), 4.12 (dd, 7=11.60, 3.97 Hz, 1 H), 4.40 (s, 1 H), 4.44 (d, 7=11.90 Hz, 1 H), 4.53 (dd, 7=9.77,7.32 Hz, 1 H), 5.07 (dd, 7=10.22,1.68 Hz, 1 H), 5.24 (dd, 7=17.24,1.37 Hz, 1 H), 5.76-5.81 (m, 1 H), 5.83 (s, 1 H), 7.10 (dd, 7=9.16, 2.44 Hz, 1 H), 7.17 (d, 7=2.44 Hz, 1 H), 7.23 (d,
7=5.80 Hz, 1 H), 7.87 (d, 7=5.80 Hz, 1 H), 8.10 (d, 7=9.16 Hz, 1 H); MS mil 729 (MH*).
Example 154: Preparation of Compound 154
Compound 154 was prepared by following Scheme 1 of Example 141 except that the
in place of L-valine methyl ester hydrochloride in step 2.
Step 1:
Modifications: 100 mg (0.146 mmol) of the product of Example 55, Step 1; 62.2 mg (0.219 mmol) W,W'-disuccinimidyl carbonate, 47.0 mg (0.364'mmol) N,N-diisopropylethylamine used.
Step 2:
Modifications: 265 mg (1.46 mmol) W-methyl L-valine methyl ester hydrochloride, 188 mg (1.46 mmol) Af.W-diisopropylethylamine used, 68.2 mg product obtained as a white powder (59.5 % yield): 'H NMR (CD3OD) 5 0.70 (dd, 7=6.71,2.14 Hz, 3 H), 0.89 (dd, 7=6.41, 2.44 Hz, 3 H), 0.96-0.98 (m, 1 H), 1.02-1.04 (m, 2 H), 1.07 (d, 7=2.14 Hz, 9 H), 1.18-1.22 (m, 2H), 1.43-1.47 (m, 1 H), 1.84-1.87 (m, 1 H),2.11-2.19 (m, 2 H), 2.31-2.37 (m, 1 H), 2.58-2.63 (m, 1 H), 2.87 (d, 7=2.44 Hz, 3 H), 2.90-
2.94 (m, 1 H), 3.65 (d, 7=2.14 Hz, 3 H), 3.92 (d, 7=2.14 Hz, 3 H), 4.10-4.14 (m, 1 H), 4.25 (dd, 7=10.07,1.22 Hz, 1 H), 4.48 (d, 7=2.44 Hz, 1 H), 4.50-4.54 (m, 1 H), 5.08-5.10 (m, 1 H), 5.25-5.28 (dd, 7=17.09,1.53 Hz, 1 H), 5.78-5.85 (m, 2 H), 7.10-7.13 (m, 1 H), 7.18-7.19 (m, 1 H), 7.24 (dd, 7=5.95, 2.59 Hz, 1 H), 7.87-7.89 (m, 1 H), 8.10 (dd, 7=9.00,2.59 Hz, 1 H); MS m/z 785 (MH+).
To a solution of the product of Example 55, Step 1 (100 mg, 0.146 mmol) in anhydrous THF (2 mL) was added carbonic acid pyridin-2-yl ester 2,2,2-trifluoro-
1,1-dimethyl-ethyl ester (44.0 mg, 0.175 mmol) and W-methylmorphoIine (59 rag, 0.58 mmol). The mixture was agitated at it for 24 h. The reaction mixture was washed concentrated in vacuo and the residue was dissolved in DCM (2 mL). The solution was washed with pH = 4 buffer solution (3x3 mL), and the washes were back-extracted with DCM (3 mL). The organic phases were combined and concentrated in vacuo. The crude product was then dissolved in MeOH and purified by reverse phase preparative HPLC to give Compound 155 as a white powder (38.5 mg, 34.3% yield): !H NMR (CD3OD) 6 1.04 (s, 11 H), 1.19-1.22 (m, 2 H), 1.23 (s, 3 H), 1.43 (dd, 7=9.31, 5.34 Hz, 1 H), 1.46 (s, 3 H), 1.87 (dd, 7=7.93, 5.49 Hz, 1 H), 2.19 (q, 7=8.85 Hz, 1 H), 2.34 (m, 1 H), 2.62 (dd, 7=13.73,7.02 Hz, 1 H), 2.92 (ddd, 7=12.67, 8.09,4.88 Hz, 1 H), 3.92 (s, 3 H), 4.06 (dd, 7=11.90,3.36 Hz, 1 H), 4.23 (s, 1 H), 4.43 (d, 7=11.60 Hz, 1 H), 4.56 (dd, 7=10.38,7.32 Hz, 1 H), 5.10 (d, 7=10.38 Hz, 1 H), 5.27 (d, 7=17.09 Hz, 1 H), 5.75-5.80 (m, 1 H), 5.82 (s, 1 H), 7.10 (dd, 7=9.16, 2.44 Hz, 1 H), 7.18 (d, 7=2.44 Hz, 1 H), 7.25 (d, 7=6.10 Hz, 1 H), 7.89 (d, 7=5.80 Hz, 1 H), 8.07 (d, 7=9.16 Hz, 1 H); MS m/z 768 (MIT).
Section £:
LC-MS conditions for section E
"method A" is 3.0X50mm Xterra @4min gradient and 4 mL/min flow
"method B" is 3.0X50mm Xterra @3min gradient and 4 mL/min flow
"method C" is 4.6X50mm Xterra @4min gradient and 4 mL/min flow
"method D" is 4.6X50mm Xterra @3min gradient and 4 mL/min flow
Example 180: Preparation of Compound 180
General Synthetic Scheme
Compound 180 to 183 were prepared by the general synthetic scheme as depicted above. These individual reactions were described in detail elsewhere. With the exception of the first alkylation step for which potassium te/f-butoxide in THF (as supplied by Aldrich Chemicals) in DMF offered a more convenient work up procedure: most of the DMF solvent was washed away with water once the alkylation was complete.
Thus Compound 180: BOCNH-P3(L-terf-BuGly)-P2[(4/?)-(2-trifluoromethyl quinolin-4-oxo)-S-proline]-Pl(l#,2S Vinyl Acca)-CONHSO2-CycIopropane: the material was obtained as a white foam in 61 % yield. LC/MS Rrmin (MNa+) [method A]: 3.35 (774). 1H NMR (400 MHz, CD3OD) 6 ppm 1.05 (m, 13 H) 1.21 (s, 9 H) 1.42 (dd, J=9.17, 5.26 Hz, 1 H) 1.86 (dd, J=8.07, 5.38 Hz, 1 H) 2.21 (m, 1 H) 2.33 (m, 1 H) 2.64 (dd, J=13.94,6.60 Hz, 1 H) 2.93 (m, 1 H) 4.09 (dd, J=11.49,2.69 Hz, 1 H) 4.21 (s, 1 H) 4.52 (m, 1 H) 4.56 (d, J=12.23 Hz, 1 H) 5.10 (dd, J=10.39,1.59 Hz, 1 H) 5.27 (d, J=16.87 Hz, 1 H) 5.58 (s, 1 H) 5.72 (m, 1 H) 7.36 (s, 1 H) 7.61 (t, J=7.70 Hz, 1 H) 7.83 (t, J=7.34 Hz, 1 H) 8.07 (d, J=8.56 Hz, 1 H) 8.26 (d, J=8.56 Hz, 1H).
Example 181: Preparation of Compound 181
(Figure Removed)
BOCNH-P3(L-re^-BuGly)-P2[(4/?)-(2,8-bistrifluoromethylquinolin-4-oxo)-5-proline]-Pl(l#,2S Vinyl Acca)-CONHSO2-Cyclopropane: the material was obtained as a white foam in 52% yield. LC/MS Rrmin (MNa^ [method A]: 3.60 (843). 'H NMR (400 MHz, CD3OD) 8 ppm 1.05 (m, 11 H) 1.16 (s, 9 H) 1.22 (m, 2H) 1.42 (dd, J=9.29,5.38 Hz, 1 H) 1.86 (dd, J=8.07,5.38 Hz, 1 H) 2.21 (q, J=8.97 Hz, 1 H) 2.33 (m, 1 H) 2.65 (dd, J=13.94, 6.85 Hz, 1 H) 2.93 (m, 1 H) 4.07 (dd, J=11.98, 2.69 Hz, 1 H) 4.17 (s, 1 H) 4.52 (dd, 1=10.52, 6.85 Hz, 1 H) 4.58 (d, J=l 1.98 Hz, 1 H) 5.10 (d, J=10.27 Hz, 1 H) 5.27 (d, J=17.12 Hz, 1 H) 5.60 (s, 1 H) 5.72 (m, 1 H) 7.46 (s, 1 H) 7.69 (t, J=7.83 Hz, 1 H) 8.18 (d, J=7.34 Hz, 1 H) 8.50 (d, J=8.31 Hz, 1 H).
BOCNH-P3(L-rert-BuGly)-P2[(47?)-(2-trifluoromethyl, 8-trifluoromethoxy quinolin-4-oxo)-S-proline]-Pl(lfl,2S Vinyl Acca)-CONHSO2-Cyclopropane: the material was obtained as a white foam in 99% yield. LC/MS R,-min (MNa+) [method A]: 3.62 (858). 'H NMR (400MHz, CD3OD) 5 ppm 1.05 (m, 11 H) 1.21 (m, 11 H) 1.42 (dd, J=9.05,5.14 Hz, 1 H) 1.86 (dd, J=8.07, 5.38 Hz, 1 H) 2.21 (q, J=8.64 Hz, 1 H) 2.33 (m, 1 H) 2.64 (dd, J=13.94,6.60 Hz, 1 H) 2.93 (m, 1 H) 4.08 (dd, J=l 1.98,2.69 Hz, 1 H) 4.18 (s, 1 H) 4.51 (dd, J=10.52,6.85 Hz, 1 H) 4.57 (d, J=12.23 Hz, 1 H) 5.10 (dd, J=10.52,1.22 Hz, 1 H) 5.27 (d, J=17.12 Hz, 1 H) 5.59 (s, 1 H) 5.72 (m, 1 H) 7.44 (s, 1 H) 7.63 (t, J=8.07 Hz, 1 H) 7.78 (d, J=7.58 Hz, 1 H) 8.24 (d, J=8.56 Hz, 1 H).
BOCNH-P3(L-fert-BuGly)-P2[(4/?)-(2-trifluoromethyl, 8-chloro quinolin-4-oxo)-S-proIine]-Pl(l/?,25 Vinyl AccaJ-CONHSCVCyclopropane: the material was obtained as a white foam in 64% yield. LC/MS R,-min (MNa"^ [method A]: 3.52 (808). 'H NMR (400 MHz, CD3OD) 5 ppm 1.04 (m, 11 H) 1.21 (m, 11 H) 1.41 (dd, J=9.41, 5.50 Hz, 1 H) 1.86 (dd, J=8.07, 5.62 Hz, 1 H) 2.20 (q, J=8.80 Hz, 1 H) 2.32 (m, 1 H) 2.63 (dd, J=13.82,6.72 Hz, 1 H) 2.92 (m, 1 H) 4.07 (dd, J=12.10, 2.81 Hz, 1 H) 4.19 fs, 1 H) 4.50 (dd, J=10.52,6.85 Hz, 1 H) 4.56 (d, J=11.98 Hz. 1 H) 5.10 (dd, 1=10.27, 1.47 Hz, i H) 5.26 (d, J=17.i2 Hz, 1 H) 5.57 (s, i H) 5.72 (m, i H) 7.41 (s, 1 H) 7.52 (t, 1=8.07 Hz, 1 H) 7.93 (d, 1=7.58 Hz, 1 H) 8.19 (d, 1=8.56 Hz, 1 H).
Example 184: General procedure for alkylation with the tripeptide (Compound 184) and P2*
General Scheme - Preparation of Example 184 (Compound 184)
The preparation of the tripeptide component, Example 184 was achieved by a sequential amide coupling using HATU as the coupling agent. It is understood that many standard coupling agents could be employed for the following scheme.
To a mixture of HATU (820 mg, 2.2 mmol), Example 180a (Boc-4R-hydroxyproline, 417 mg, 1.8 mmol) and Example 180c (cyclopropanesulfonic acid (l(7?)-amino-2(5)-vinyl-cyclopropanecarbonyl)-amide hydrochloride salt, 490 mg, 1.8 mmol) in a flame dried flask at room temperature was added dry CHaCb (8 mL). The mixture was kept under dry N2 before it was chilled to -78 °C. Hunig's base (diisopropylethylamine, 625 uL, 3.6 mmol) was added slowly over a period 5 min and the mixture turned into a pale orange suspension. Stirring was continued for an hour while temperature was allow to raise to ambient. LC/MS showed complete conversion into the desired product 184a. The crude reaction was worked up as usual, washed with three portions (5 mL) of water, organic residues were extracted into ethyl acetate (3X5 mL). The crude product was obtained by removal of organic solvents in vacuo. The material was used in the next step without further purification.
Preparation of intermediate Example 184b:
The dried solid from the previous step was taken into 9 mL of CHbCh at room temperature. To this solution was added 3 mL of trifluoroacetic acid forming a pale yellowish solution. Stirring was continued for 2 hours at room temperature. LC/MS showed no starting material 184a while the desired product 184b was the major signal along with a signal correponding to a side product carried over from HATU in
the step earlier. The solvents were evaporated and the solid residue was used in the next step immediately without further purification.
Preparation of the tripeptide, Compound 184:
BOCNH-P3(L-tert-BuGly)-P2[(4/?)-hydroxy-S-proline]-Pl(1R,2S Vinyl Acca)-CONHSO2-Cyclopropane [Notebook 46877-128]
The crude product from the previous step (Example 184b, 1.8 mmol) was mixed with HATU (700 mg, 1.8 mmol) and BOC-L- te/f-leucine (Example 180f, Fluka Chemicals, 420 mg, 1.8 mmol) in CE^C^ (10 mL) at room temperature. To this suspension was treated Hiinig's base (1 mL, excess) forming a somewhat thinner, orange suspension. LC/MS showed some conversion into compound 184. Complete conversion into the desired product 184 was observed after stirring was continued for two days at room temperature. Crude reaction mixture was evaporated to dryness. The residue was taken into ethyl acetate. Most of HATU residue was removed by extractions with half saturated, freshly prepared sodium bicarbonate solution. The last traces of HATU residue (1-hydroxy 7-azabenzotriazole) was removed by washing with deionized water. Evaporation of solvents gave 990 mg (98%) of the desired product as white foam. This material is suitable for the subsequent alkylation with electrophiles such as quinolines and isoquinolines directly without further purification. LC/MS R,-min (MNa+) [method A]: 2.65 (579). JH NMR (400 MHz, CD3OD) 8 ppm 0.95 (s, 2 H) 0.99 (s, 9 H) 1.05 (m, 2 H) 1.21 (m, 1 H) 1.39 (m, 9 H) 1.84 (dd, 7=8.31,5.38 Hz, 1 H) 1.96 (m, 1 H) 2.11 (m, 1 H) 2.20 (m, 1 H) 2.91 (m, 1 H) 3.80 (m, 2 H) 4.28 (d, 7=9.78 Hz, 1 H) 4.35 (dd, 7=9.90,6.97 Hz, 1 H) 4.47 (s, 1 H) 5.11 (m, 1 H) 5.29 (d, 7=17.12 Hz, 1 H) 5.75 (m, 1 H).
Alkylation of the tripeptide (compound 184) with electrophiles:
To a flame-dried 25 mL round bottom flask was charged with Compound 184, (0.5 -1.0 mmol), substituted 4-chloroquinoline (1.0 equivalent) and lanthanum chloride (LaCla anhydrous beads, used as supplied by Aldrich, M.W. 245 gAnol; 1.0 equivalent. Note: the inclusion of such additive was found to be helpful in some cases especially with those less reactive electrophiles. This reagent can, at times, be omitted if the electrophiles are sufficiently reactive towards anionic alkylation) in 2 mL dry DMF. The inorganic salt was only sparingly soluble in DMF at room temperature. The mixture was chilled to -78 °C (dry-ice/acetone bath) with stirring under nitrogen. To this chilled mixture was added a THF solution of potassium tert-butoxide (1.0 M, used as supplied by Aldrich, 5.5 equivalents) and the color of mixture changed from colorless to pale yellowish or greenish. It was stirred at -78 °C for a period dependent upon the 4-chloroquinoline reactivity (a few hrs. at -78 °C to overnight at room temperature). The inorganic salt was also found to change into a fine emulsion at the end. It was quenched with a half saturated NlitCl aqueous solution (2 mL). Organic materials were extracted into ethyl acetate (10 mL X 3). Organic layers were combined, back washed with deionized water (10 mLX 2). Evaporation of the organic fraction gave a crude mixture rich in the desired product as determined by LC/MS. The desired product was isolated by preparative HPLC using standard separation parameters (typically: 3.0X50mm Xterra column @4min gradient and 4"mL/min flow rate) to give the analytically pure desired product. The alkylation of 1-halo isoquinoline series was carried out in exactly the same way.
Following the general tripeptide alkylation procedure as described in Example 184, BOCNfH-P3(L-te/t-BuGly)-P2[(4/?)-(7-trifluoromethylquinolin-4-oxo)-,S-proline]-Pl(l/?,25 Vinyl Acca)-CONHSO2-Cyclopropane was obtained as a white foam in 50% yield. LC/MS Rrmin (MH+) [method B]: 2.32 (752). 'H NMR (400 MHz, CD3OD) 5 ppm 1.02 (s, 9 H) 1.06 (m, 11 H) 1.22 (m, 2 H) 1.43 (dd, J=9.41,5.26 Hz, 1 H) 1.88 (dd, J=8.19, 5.50 Hz, 1 H) 2.23 (q, J=8.80 Hz, 1 H) 2.42 (m, 1 H) 2.75 (dd, J=14.06, 6.48 Hz, 1 H) 2.93 (m, 1 H) 4.10 (m, 2 H) 4.61 (m, 2 H) 5.12 (dd, J=10.39, 1.59 Hz, 1 H) 5.29 (d, J=17.12 Hz, 1 H) 5.72 (m, 2 H) 7.61 (d, J=6.36 Hz, 1 H) 7.96 (d. J=8.80 Hz. 1 m 8.38 (s. 1 H) 8.59 Cd, J=8.56 H/, 1 FT) 9.14 Cd, J=6.36 Hz, 1 HX
Example 186: Preparation of Compound 186
Following the general tripeptide alkylation procedure as described in Example 184, BOCNH-P3(L-tert-BuGly)-P2[(4/?M8-trifluoromethyI quinolin-4-
oxo)-S-proline]-Pl(LR,2S Vinyl Acca)-CONHSO2-Cyclopropane: the desired product was obtained as a white foam in 50% yield. LC/MS R,-min (MET) [method B]: 2.48 (752). 'H NMR (400 MHz, CD3OD) 6 ppm 1.02 (s, 9 H) 1.05 (m, 2 H) 1.13 (s, 9 H) 1.23 (m, 2 H) 1.42 (dd, J=8.68,5.50 Hz, 1 H) 1.87 (dd, J=8.07, 5.38 Hz, 1 H) 2.21 (q, J=8.80 Hz, 1 H) 2.36 (m, 1 H) 2.69 (dd, J=14.06, 6.97 Hz, 1 H) 2.93 (m, 1 H) 4.08 (dd, J=11.98,2.93 Hz, 1 H) 4.15 (s, 1 H) 4.54 (dd, J=10.52,7.09 Hz, 1 H) 4.60 (d, J=12.47 Hz, 1 H) 5.11 (dd, J=10.52,1.71 Hz, 1 H) 5.28 (d, J=15.90 Hz, 1 H) 5.58 (s, 1 H) 5.72 (m, 1 H) 7.32 (d, J=5.87 Hz, 1 H) 7.69 (t, J=7.95 Hz, 1 H) 8.22 (d, J=7.09 Hz, 1 H) 8.55 (d, J=8.07 Hz, 1 H) 8.88 (d, J=5.62 Hz, 1 H).
Preparation of isoquinoline intennediates for 6-F, 6-Ethyl, 6-isopropyl and 6-tert-butyl isoquinoline P2* building blocks.
In general, the 6-fluoro and 6-alkyl isoquinolines used in the following experiments were prepared via a Pomeranz-Fritsch synthesis (Typical procedure: Preparation of optically active 8,8-disubstituted 1,1-biisoquinoline, K. Hirao, R. Tsuchiya, Y. Yano, H. Tsue, Heterocydes 42(1) 1996,415-422) as outlined below. The products were converted into the 1-chloro derivatives via N-oxide intermediates as described elsewhere.
General Synthetic Scheme
Reagents and reaction conditions: (a) reflux in benzene, azeotropic removal of water; (b) first step: ethyl chloroformate, trimethyl phosphite in THF, second step: titanium tetrachloride in chloroform; (c) MCPBA in QrtCb; (d) POCla in benzene
Example 187: Preparation of Compound 187
BOCNH-P3(L-rert-BuGly)-P2[(4/?)-(6-fluoroisoquinolin-l-oxo)-5-proline]-
,O Vinyl
white foam in 12% yield. LC/MS R,-min (MNa+) [method C]: 3.81 (724). 'H NMR (400 MHz, CD3OD) 8 ppm 1.05 (m, 13 H) 1.22 (s, 9 H) 1.42 (m, 1 H) 1.86 (m, 1 H) 2.21 (m, 2 H) 2.61 (dd, 7=13.69, 6.60 Hz, 1 H) 2.93 (m, 1 H) 4.05 (d, 7=13.69 Hz, 1 H) 4.21 (s, 1 H) 4.49 (m, 2 H) 5.11 (d, 7=10.03 Hz, 1 H) 5.28 (d, 7=17.61 Hz, 1 H) 5.72 (m, 1 H) 5.86 (d, 7=4.40 Hz, 1 H) 7.31 (m, 2 H) 7.48 (d, 7=8.31 Hz, 1 H) 7.97 (d, 7=6.36 Hz, 1 H) 8.26 (d, /=6.11 Hz, 1 H).
Example 188: Preparation of Compound 188
The alkylation described above gave the 1-chloroisoquinoline as the major product: BOCNH-P3(L-rerr-BuGly)-P2[(4/?)-(l-chloroisoquinolin-6-oxo)-5-proline]-P 1(1^,25 Vinyl Acca)-CONHSO2-Cyclopropane: the material was obtained as a white foam in 40.2% yield. LC/MS R,-min (MH+) [method C]: 3.81 (718). 'H NMR (400 MHz, CD3OD) 5 ppm 1.00 (s, 9 H) 1.06 (m, 2 H) 1.25 (s, 11 H) 1.41 (m, 1 H) 1.86 (dd, 7=8.07,5.38 Hz, 1 H) 2.25 (m, 2 H) 2.54 (dd, 7=12.96, 6.60 Hz, 1 H) 2.92 (m, 1 H) 4.06 (dd, 7=11.98,2.69 Hz, 1 H) 4.20 (s, 1 H) 4.31 (d, 7=11.74 Hz, 1 H) 4.45 (dd, 7=9.78, 7.58 Hz, 1 H) 5.11 (dd, 7=10.27,1.71 Hz, 1 H) 5.28 (dd, 7=17.36, 1.47 Hz, 1 H) 5.36 (s, 1 H) 5.74 (m, 1 H) 7.35 (d, 7=9.29 Hz, 1 H) 7.40 (s, 1 H) 7.70 (d, 7=5.87 Hz, 1 H) 8.13 (d, 7=5.87 Hz, 1 H) 8.25 (d, 7=9.29 Hz, 1 H).
BOCNH-P3(L-rert-BuGly)-P2[(4^)-(6-ethylisoquinolin-l-oxo)-5-proline]-Pl(l/?,25 Vinyl Acca)-CONHSOrCyclopropane: the material was obtained as a white foam in 4.6 mg of yellow solid was obtained (4.2%).LC/MS rt-min (MH*) [method B]: 2.70
(712). 'H NMR (400MHz, CD3OD) 6 ppm 1.01 (s, 9 H) 1.07 (m, 2 H) 1.22 (m, 11 H) 1.28 (1,7=7.91 Hz, 3 H) 1.41 (m, 1 H) 1.85 (m, 1 H) 2.25 (m, 2 H) 2.60 (dd, 7=13.69,6.85 Hz, 1 H) 2.80 (q, 7=7.66 Hz, 2 H) 2.93 (m, 1 H) 4.02 (d, 7=31.06 Hz, 1 . H) 4.23 (s, 1 H) 4.42 (m, 1 H) 4.54 (m, 1 H) 5.10 (d, 7=10.27 Hz, 1 H) 5.28 (d, 7=17,12 Hz, 1 H) 5.74 (m, 1 H) 5.84 (s, 1 H) 7.25 (d, 7=5.87 Hz, 1 H) 7.38 (d, 7=8.56 Hz, 1 H) 7.59 (s, 1 H) 7.90 (d, 7=6.24 Hz, 1 H) 8.09 (d, 7=8.56 Hz, 1 H).
Example 190: Preparation of Compound 190
BOCNH-P3(L-fert-BuG]y)-P2[(4/?)-(6-isopropylisoquinolin-l-oxo)-5-prolinel-Pl(lR,2S Vinyl Acca)-CONHSC>2-Cyciopropane: the material was obtained as a white foam in 69% yield. LC/MS Rrmin (MNa+) [method B]: 2.76 (749). *H NMR (400 MHz, CD3OD) 6 ppm 1.05 (m, 13 H) 1.20 (m, 9 H) 1.31 (d, 7=6.85 Hz, 6 H) 1.42 (m, 1 H) 1.86 (dd, 7=8.07, 5.62 Hz, 1 H) 2.26 (m, 2 H) 2.62 (dd, 7=13.69,6.85 Hz, 1 H) 2.93 (m, 1 H) 3.07 (m, 1 H) 4.06 (m, 1 H) 4.21 (s, 1 H) 4.52 (m, 2 H) 5.11 (d, 7=10.27 Hz, 1 H) 5.28 (d, 7=17.12 Hz, 1 H) 5.74 (m, 1 H) 5.84 (s, 1 H) 7.32 (d, 7=6.11 Hz, 1 H) 7.46 (d, 7=8.56 Hz, 1 H) 7.64 (s, 1 H) 7.90 (d, 7=6.11 Hz, 1 H) 8.13 (d, 7=8.56 Hz, 1H).
BOCNH-P3(L-re/t-BuGly)-P2[(4,R)-(6-rerr-butylisoquinoIin-l-oxo)-S-proline]-Pl(IK.2S Vinyl Acca)-CONHSO2-Cyclopropane: the material was obtained as a white foam in 81% yield. LC/MS R,-min (MH+) [method B]: 2.84 (740). 'H NMR (400 MHz, CD3OD) 8 ppm 1.01 (s, 9 H) 1.06 (m, 2 H) 1.18 (s, 9 H) 1.22 (m, 2 H) 1.39 (s, 9 H) 1.43 (m, 1 H) 1.87 (dd, 7=8.19, 5.50 Hz, 1 H) 2.27 (m, 2 H) 2.63 (dd, 7=13.57,6.97 Hz, 1 H) 2.93 (m, 1 H) 4.06 (m, 1 H) 4.20 (s, 1 H) 4.52 (m, 2 H) 5.10 (d, 7=11.49 Hz, 1 H) 5.28 (d, 7=17.12 Hz, 1 H) 5.73 (m, 1 H) 5.84 (s, 1 H) 7.36 (d, 7=6.11 Hz, 1 H) 7.66 (dd, 7=8.80,1.22 Hz, 1 H) 7.78 (s, 1 H) 7.91 (d, 7=5.87 Hz, 1 H) 8.15 (d, 7=8.80 Hz, 1 H).
Preparation of 6-isopropoxyI and 6-tert-butoxyl isoquinoline intermediates:
Some 6-alkoxy-l-chlofo isoquinolines were prepared by a direct, ipso displacement of the 6-fluoro-l-chloroisoquinoline with the corresponding alkoxide metal ions such as potassium tert-butoxide (53%) and sodium isopropoxide (54%).
The 6-fluoro-l-chloroisoquinoIine was subjected to an aromatic nucleophilic displacement with sodium isopropoxide and potassium terf-butoxide in DMF to give the corresponding
6- isopropoxyl (54%): !H NMR (400 MHz, CHLOROFORM-d) S ppm 1.43 (d, 7=6.11 Hz, 6 H) 4.76 (m, 7=6.11 Hz, 1 H) 7.08 (d, 7=2.45 Hz, 1 H) 7.29 (dd, 7=9.29, 2.45 Hz, 1 H) 7.50 (d, 7=5.62 Hz, 1 H) 8.18 (d, 7=5.87 Hz, 1 H) 8.24 (d, 7=9.29 Hz, 1 H) and 6-te/f-butoxyl-l-chloro isoquinolines (55%): 'H NMR (400 MHz, CHLOROFORM-d) 8 ppm 1.48 (s, 9 H) 7.31 (m, 2 H) 7.47 (d, J=5.62 Hz, 1 H) 8.18 (d, J=5.62 Hz, 1 H) 8.21 (d, J=9.78 Hz, 1 H) as the major product respectively. These 6-alkoxyl-l-chloro isoquinolines were alkylated with the tripeptide as described in Example 184 to give the desired products shown below.
BOCNH-P3(L-rerr-BuGly)-P2[(4J"?)-(6-rert-butoxyisoquinolin-l-oxo)-5-proline]-P1(1#,2S Vinyl Acca)-CONHSO2-Cyclopropane: the material was obtained as a white foam in 39% yield. LC/MS R,-min (MH+) [method C]: 3.99 (756). 'H NMR (400 MHz, CD3OD) 5 ppm 1.03 (br s, 13 H) 1.19 (s, 9 H) 1.42 (m, 10 H) 1.86 (dd, 7=7.83, 5.62 Hz, 1 H) 2.24 (m, 2 H) 2.60 (dd, 7=13.69,6.85 Hz, 1 H) 2.93 (m, 1 H) 4.04 (dd, 7=11.49,2.93 Hz, 1 H) 4.23 (s, 1 H) 4.49 (m, 2 H) 5.10 (d, 7=11.25 Hz, 1 H) 5.27 (d, 7=16.87 Hz, 1 H) 5.73 (m, 1 H) 5.81 (s, 1 H) 7.13 (dd, 7=8.80,1.47 Hz, 1 H) 7.25 (d, 7=5.87 Hz, 1 H) 7.33 (d, 7=2.20 Hz, 1 H) 7.87 (d, 7=6.11 Hz, 1 H) 8.10 (d, 7=9.05 Hz, 1 H).
Preparation of phthalazine P2* derivatives:
In general, both 1-chlorophthalazine and 1,4-dichlorophthalazine undergo alkylation smoothly to give the desired products. However, the commercially available 1-chlorophthalazine and 1,4-dichlorophthalazine are often contaminated with some hydrolyzed materials. A pre-treatment with POCls followed by alkylation immediately afterward furnished more consistent results.
General Synthetic Scheme
Reaction Conditions: (a) POCis in DCE; (b) Aikylaiion witli tiipcptide, (c) sodio derivatives of imidazole (R = CH), triazole (R = N)
Example 194: Preparation Compound 194
(Figure Removed)
BOCNH-P3(L-rerr-BuGly)-P2[(4/?)-(phthalazine-l-6xo)-5-proline]-Pl(l/?,25 Vinyl Acca)-CONHSO2-Cyclopropane: the material was obtained as a white foam in 41%
yield. LC/MS R,-min (MNa+) [method B]: 2.07 (707). 'HNMR (400 MHz, CD3OD) 6 ppm 1.03 (m, 9 H) 1.06 (m, 4 H) 1.14 (s, 9 H) 1.20 (m, 1 H) 1.43 (m, 1 H) 1.87 (dd, 7=8.07, 5.62 Hz, 1 H) 2.24 (q, 7=8.80 Hz, 1 H) 2.38 (m, 1 H) 2.76 (dd, 7=14.18,7.09 Hz, 1 H) 2.92 (m, 1 H) 4.11 (m, 2 H) 4.62 (m, 1 H) 5.11 (dd, 7=10.27,1.71 Hz, 1 H) 5.29 (dd, 7=17.12,1.22 Hz, 1 H) 5.72 (m, 1 H) 5.96 (s, 1 H) 8.26 (m, 2 H) 8.46 (m, 2 H) 9.84 (s, 1 H).
Example 195: Preparation of Compound 195
BOCNH-P3(L-fer/-BuGly)-P2[(4J?)-(4-chlorophthalazine-l-oxo)-5-proline]-P1(1R,2S Vinyl Acca)-CONHSO2-Cyclopropane: the material was obtained as a white foam in 23% yield. LC/MS Rrmin (MNa+) [method C]: 3.52 (742). 'H NMR (400 MHz, CD3OD) 8 ppm 1.01 (s, 11 H) 1.06 (m, 2 H) 1.14 (s, 9 H) 1.22 (m, 1 H) 1.43 (m, 1 H) 1.87 (m, 1 H) 2.21 (m, 1 H) 2.35 (m, 7=10.27 Hz, 1 H) 2.70 (m, 1 H) 2.93 (m, 1 H) 4.05 (d, 7=3.42 Hz, 1 H) 4.58 (m, 2 H) 5.11 (dd, 7=10.39,1.10 Hz, 1 H) 5.28 (d, 7=17.36 Hz, 1 H) 5.73 (m, 1 H) 5.93 (s, 1 H) 7.99 (m, 1 H) 8.07 (t, 7=7.70 Hz, 1 H) 8.26 (dd, 7=8.19,2.32 Hz, 2 H).
Preparation of 4-(imidazo-l-yl)phthalazine and 4-(l,2,4-triazo-l-yl)phthalazine P2* derivatives:
The product, compound 195 from above, BOCNH-P3(L-tert-BuGly)-P2[(4/?)-(4-chloro phtha!azine-l-oxo)-S-proline]-Pl(l/?,2S Vinyl Acca)-CONHSO2-
Cyclopropane, was subjected to displacement by the anions of typical azoles such as imidazole and triazole to give 4-azole substituted phthalazine derivatives shown below:
Example 196: Preparation of Compound 196
This was made by displacing the 4-chloro phthalazine (Compound 195) with the sodium salt of imidazole in DMF at 55-65 °C.
BOCNH-P3(L-terf-BuGIy)-P2[(4/f)-(4-(imidazo-l-yl)phthaIazine-l-oxo)-5-proline]-Pl(lR,2S Vinyl Acca)-CONHSC>2-Cyclopropane: the material was obtained as a white foam in 23% yield. LC/MS R,-min (MNa+) [method B]: 1.94 (773). 'HNMR (400 MHz, CD3OD) 5 ppm 1.03 (s, 9 H) 1.07 (m, 2 H) 1.20 (m, 9 H) 1.24 (m, 1 H) 1.41 (m, 2 H) 1.88 (dd, 7=8.19, 5.50 Hz, 1 H) 2.23 (m, 1 H) 2.41 (m, 1 H) 2.75 (m, 7=14.92 Hz, 1 H) 2.93 (m, 1 H) 4.14 (m, 2 H) 4.60 (dd, 7=10.15,6.97 Hz, 2 H) 5.12 (dd, 7=10.27,1.47 Hz, 1 H) 5.29 (dd, 7=17.24,1.35 Hz, 1 H) 5.74 (m, 1 H) 6.09 (s, 1 H) 7.85 (s, 1 H) 7.94 (m, 1 H) 8.10 (m, 2 H) 8.43 (m, 1 H) 9.17 (s, 1 H) 9.46 (s, 1 H).
During the displacement reaction, small amount of de-BOC by-product (Compound 197) was also isolated:
NH2-P3(L-rerr-BuGly)-P2[(4^)-(4-(imidazo-l-yl)phthalazine-l-oxo)-S-proline]-P1(LR,2S Vinyl Acca)-CONHSO2-Cyclopropane: the material was obtained as a white foam in 17% yield. LC/MS R,-min (MH+) [method B]: 1.22 (651). 'HNMR (400 MHz, CD3OD) 8 ppm 1.16 (s, 9 H) 1.23 (m, 2 H) 1.42 (dd, 7=9.41,5.50 Hz, 1 H) 1.89 (m, 1 H) 2.26 (q, 7=8.97 Hz, 1 H) 2.43 (m, 1 H) 2.78 (dd, 7=14.06,7.21 Hz, 1 H) 2.93 (m, 1 H) 3.74 (m, 1 H) 4.11 (s, 1 H) 4.22 (dd, 7=12.23, 3.91 Hz, 1 H) 4.47 (m, 2 H) 4.71 (dd, 7=10.27,7.09 Hz, 1 H) 5.12 (m, 1 H) 5.29 (d, 7=17.36 Hz, 1 H) 5.71 (m, 1 H) 6.13 (t, 7=3.67 Hz, 1 H) 7.87 (s, 1 H) 7.97 (m, 1 H) 8.14 (m, 3 H) 8.41 (m, 1 H) 9.47 (s, 1 H).
Example 198: Preparation Compound 198
This was made by displacing the 4-chloro phthalazine (Compound 195) with the sodium salt of 1,2,4-triazole in DMF at 55-65 °C.
BOCNH-P3(L-tert-BuGly)-P2[(4^)-(4-(l,2,4-triazo-l-yl)phthalazine-l-oxo)-5-proline]-Pl(lfl,2S Vinyl Acca)-CONHSO2-Cyclopropane: the material was obtained as a white foam in 62% yield. LC/MS R,-niin (MNa+) [method C]: 3.35 (774). 'H NMR (500 MHz, CD3OD) 6 ppm 0.97 (s, 9 H) LOI (m, 2 H) 1.10 (s, 9 H) 1.16 (m, 1 H) 1.37 (m, 2 H) 1.82 (m, 1 H) 2.18 (d, 7=8.55 Hz, 1 H) 2.32 (m, 1 H) 2.69 (dd, 7=13.58, 6.87 Hz, 1 H) 2.88 (br s, 1 H) 4.06 (d, 7=1 1.60 Hz, 1 H) 4.13 (s, 1 H) 4.53 (m, 7=9.16 Hz, 1 H) 4.61 (d, 7=1 1.90 Hz, 1 H) 5.06 (d, 7=10.07 Hz, 1 H) 5.23 (d,
H) 8.44 (d, 7=7.63 Hz, 1 H) 9.14 (s, 1 H).
Preparation of 4-hydroxv and 4-alkoxv phthalazine P2* derivatives
283
Reaction Conditions: (a) sodium alkoxides such as methoxide, ethoxide and isopropoxide
(Figure Removed)
The 4-chloro phthalazine (Example 195) was dissoved in dry isopropyl alcohol at room temperature and 1.0 eq of sodium isoproxide was added, the resulted suspension was brought to reflux. The desired product, 4.5 mg of yellow solid was obtained (20.0%).LC/MS rt-min (MH*): 2.68 (743) [method B]. ]H NMR (400 MHz, CD3OD) 8 ppm 1.02 (m; 11 H) 1.20 (m, 11 H) 1.42 (m, 1 H) 1.49 (d, J=6 Hz, 6 H) 1.87 (dd, 7=7.95, 5.50 Hz, 1 H) 2.21 (m, 1 H) 2.23 (m, 1 H) 2.66 (m, 1 H) 2.93 (m, 1 H) 4.08 (q, 7=7.09 Hz, 1 H) 4.19 (s, 1 H) 4.55 (m, 2 H) 5.11 (d, 7=10.27 Hz, 1 H) 5.28 (d, 7=17.61 Hz, 1 H) 5.48 (m, 1 H) 5.70 (d, 7=10.03 Hz, 1 H) 5.81 (m, 1 H) 7.90 (m,2H)8.16(m,2H).
Example 200: Preparation of Compound 200
Likewise, the 4-ethoxy derivative was prepared: BOCNH-P3(L-f-BuGly)-P2[(4R)-( 4-ethoxyphthalazine -l-oxo)-S-proline]-Pl(l/?,2S VinylAcca)-CONHSO2Cyclopropane.
4.0 mg of yellow solid was obtained (16.0%).LC/MS rt-min (MH+): 2.52 (729) [method B]. JH NMR (400 MHz, CD3OD) 5 ppm 1.01 (s, 9 H) 1.06 (m, 2 H) 1.16 (s, 9 H) 1.24 (m, 2 H) 1.43 (dd, 7=9.78,5.14 Hz, 1 H) 1.53 (t, 7=6.97 Hz, 3 H) 1.87 (dd, 7=8.19, 5.50 Hz, 1 H) 2.22 (q, 7=8.97 Hz, 1 H) 2.32 (m, 1 H) 2.67 (m, 1 H) 2.93 (m, 1 H) 4.06 (d, 7=8.56 Hz, 1 H) 4.19 (s, 1 H) 4.56 (m, 4 H) 5.10 (m, 1 H) 5.30 (m, 1 H) 5.74 (m, 1 H) 5.82 (s, 1 H) 7.94 (m, 2 H) 8.16 (d, 7=7.83 Hz, 1 H) 8.21 (m, 1 H).
Example 201: Preparation of Compound 201
BOCNH-P3(L-/-BuGly)-P2[(4R)-(4-methoxyphthalazine-l-oxo)-S-proline]-Pl(l/?,25 VinylAcca)-CONHSO2Cyclopropane was prepared in 30.2% yield. LC/MS rt-min (MH*): 2.42 (715) [method B] 'H NMR (400 MHz, CD3OD) 8 ppm 0.96 (s, 9 H) 1.07 (m, 2 H) 1.20 (m, 11 H) 1.43 (dd, 7=9.29,5.38 Hz, 1 H) 1.87 (dd, 7=8.07,5.62 Hz, 1 H) 2.22 (q, 7=8.80 Hz, 1 H) 2.31 (m, 1 H) 2.66 (d, 7=8.07 Hz, 1 H) 2.93 (m, 1
H) 4.06 (dd, 7=11.98,3.18 Hz, 1 H) 4.19 (d, 7=3.42 Hz, 4 H) 4.54 (m, 2 H) 5.11 (m, 1 H) 5.28 (d, 7=17.36 Hz, 1 H) 5.73 (m, 1 H) 5.83 (s, 1 H) 7.95 (m, 2 H) 8.19 (m, 2 H).
Example 202: Preparation of Compound 202
An attempt was made to displace BOCNH-P3(L-tert-BuGly)-P2[(4tf)-(4-chloro phthalazine-l-oxo)-S-proline]-Pl(lfl,2S Vinyl Acca)-CONHSO2-Cyclopropane (Example 195) with the sodium salt of tetrazole gave mostly the 4-hydroxy, hydrolyzed material.
BOCNH-P3(L-f-BuGly)-P2[(4R)-( 4-hydroxyphthalazine -1 -oxo)-S-proline] Pl(lR,2S Vinyl Acca)-CONHSO2Cyclopropane was obtained (44.2%) as a pale creamy solid. LC/MS rt-min (MH*): 2.18 (701) [method B]. 'H NMR (400 MHz, CD3OD) 6 ppm 1.01 (s, 9 H) 1.05 (m, 2 H) 1.23 (m, 1 1 H) 1.42 (dd, 7=9.29, 5.38 Hz, 1 H) 1.87 (dd, 7=8.07, 5.38 Hz, 1 H) 2.21 (m, 2 H) 2.63 (m, 1 H) 2.93 (m, 1 H) 4.00 (s, 1 H) 4.20 (s, 1 H) 4.50 (m, 2 H) 5.1 1 (dd, 7=10.27, 1.47 Hz, 1 H) 5.29 (d, 7=16.87 Hz, 1 H) 5.59 (s, 1 H) 5.73 (m, 1 H) 7.86 (dd, 7=5.75, 3.30 Hz, 2 H) 8.01 (dd, 7=5.87, 3.42 Hz, 1 H) 8.29 (dd, 7=5.87, 3.42 Hz, 1 H).
Preparation of 5,6-disubstituted isoquinoline P2* derivatives via an alkylation protocol.
Reaction Conditions: (a) LDA in THF; (b) Alkyl disulfide such as (n-PrS)2; (c) Sodium alkoxide such as MeONa; (d) Thiophene 2-carboxaldehyde; (e) MnOa in benzene
Example 203: Preparation of l-chloro-5-propylthio-6-fluoro isoquinoline:
To a chilled (-78 °C) solution of l-chloro-6-fluoro isoquinoline (59mg, 0.32 mmol) in 2 mL of THF was added LDA solution in cyclohexane (1.5 Molar, 0.23 mL, 0.35 mmol). The orange solution was stirred for 2 hrs before it was treated with n-propyl disulflde (60 nL, neat material, excess). The reaction was allowed to warm to room temperature over 30 min. It was quenched with a solution of half saturated NKUC1, the organic residues were extracted into ethyl acetate. LC-MS analysis indicated
about 50% conversion into the desired product along with mainly starting material. The desired product was purified by a short column (4 cm X 2 cm, silica gel type-H) eluted with 5% ether in hexanes, 29mg (36% yield) of the desired product was obtained. LC/MS R,-min (MH*) [method C]: 3.79 (256). *H NMR (400 MHz, CHLOROFORM-D) 8 ppm 0.96 (t, 7=7.34 Hz, 3 H) 1.52 (m, 2 H) 2.86 (m, 2 H) 7.45 (dd, 7=9.29, 8.56 Hz, 1 H) 8.34 (d, 7=0.73 Hz, 2 H) 8.37 (m, 1 H). This compound was alkylated with the tripeptide by way of the procedure described in Example 184 to give the following compound:
Example 204: Preparation of Compound 204
BOCNH-P3(L-r-BuGly)-P2[(4R)-(l-Chloro-5-propylthio-isoquinolin-6-oxo)-S-proline]-Pl(LR,2S VinylAcca)-CONHSO2Cyclopropane, Shown below
Following the general procedure, 4.6 mg of yellow solid was obtained (3.2%).LC/MS rt-min (MET): 2.73 (792) (method B). !H NMR (400 MHz, CD3OD) 5 ppm 0.93 (t, 7=7.34 Hz, 3 H) 0.97 (s, 9 H) 1.08 (m, 2 H) 1.24 (m, 11 H) 1.43 (m, 3 H) 1.86 (m, 1 H) 2.24 (m, 2 H) 2.56 (m, 1 H) 2.78 (q, 7=7.09 Hz, 2 H) 2.92 (m, 1 H) 4.01 (d, 7=9.29 Hz, 1 H) 4.22 (s, 1 H) 4.29 (s, 1 H) 4.59 (d, 7=6.85 Hz, 1 H) 5.11 (d, 7=10.76 Hz, 1 H) 5.28 (d, 7=17.36 Hz, 1 H) 5.49 (s, 1 H) 5.74 (m, 1 H) 7.66 (d, 7=9.29 Hz, 1 H) 8.18 (d, 7=6.11 Hz, 1 H) 8.41 (m, 2 H).
The following procedure is equally applicable to other 5-alkylthio-6-alkoxy isoquinolines by changing the reagents shown here. To a solution of l-chloro-6-fluoro isoquinoline (88mg, 0.48 mmol) in 2.0 mL THF under nitrogen at -78 °C was added LDA (1.5 Molar in cyclohexane, 0.42 mL, 0.63 mmol) forming a dark brownish solution. Neat n-propyl disulfide (85 uL, excess) was introduced after it was stirred at -78 °C for 30 min. The reaction was allowed to warm to room temperature over a period of 30 min. It was quenched with a solution of half saturated NH4C1, the organic residues were extracted into ethyl acetate. The organic layers were combined and dried under vacuum to 50 microns(Hg). The crude product was taken into 2 ml. of THF. cooled to -78 °C. added with excess potassium ethoxide (60mg). The isoquinoline intermediate was finally purified by a silica gel column (type-H, Merck) eluted with ether-hexanes mixture, 32.2mg (24%) of the pure compound was obtained. LC-MS showed l-chloro-5-propylthio-6-ethoxyl isoquinoline at rt-min (MH+) [method C]: 3.77 (282). ]H NMR (400 MHz, CHLOROFORM-D) 8 ppm 0.94 (t, 7=7.34 Hz, 3 H) 1.46 (m, 2 H) 1.55 (t, 7=6.97 Hz, 3 H) 2.83 (t, .7=7.21 Hz, 2 H) 4.32 (q, 7=6.85 Hz^ 2 H) 7.36 (d, 7=9.29 Hz, 1 H) 8.22 (d, 7=6.11 Hz, 1 H) 8.32 (d, 7=9.29 Hz, 1 H) 8.35 (d, 7=6.11 Hz, 1 H). Following the general tripeptide alkylation procedure (Example 184), this 1-chloro-5-propylthio-6-ethoxy isoquinoline was alkylated with the tripeptide (compound 184) to give 40.7 mg (44.8%) of the desired product shown below.
(Figure Removed)
BOCNH-P3(L-r-BuGly)-P2[(4R)-(6-ethoxy-5-propylthio-isoquinoline-l-oxo)-S-proline]-Pl(l/?,25 VinylAcca)-CONHSO2Cyclopropane. LC/MS rt-min (MH1"): 2.93 (803) [method B]. 1H NMR (400 MHz, CD3OD) 6 ppm 0.93 (t, 7=7.34 Hz, 3 H) 1.01 (s, 9 H) 1.07 (m, 2 H) 1.21 (m, 11 H) 1.41 (m, 3 H) 1.48 (t, 7=6.85 Hz, 3 H) 1.86 (dd, 7=8.07, 5.62 Hz, 1 H) 2.25 (m, 2 H) 2.60 (dd, 7=13.69,6.85 Hz, 1 H) 2.81 (q, 7=6.97 Hz, 2 H) 2.93 (m, 1 H) 4.05 (m, 1 H) 4.21 (s, 1 H) 4.27 (q, 7=7.09 Hz, 2 H) 4.43 (d, 7=11,74 Hz, 1 H) 4.52 (m, 1 H) 5.10 (d, 7=10.76 Hz, 1 H) 5.28 (d, 7=17.12 Hz, 1 H) 5.74 (m, 1 H) 5.82 (s, 1 H) 7.30 (d, 7=9.05 Hz, 1 H) 7.92 (d, 7=6.36 Hz, 1 H) 7.97 (m, 1 H) 8.22 (d, 7=9.05 Hz, 1 H).
Example 207: Preparation of Compound 207
Likewise the same procedure was applied to the preparation of BOCNH-P3(L-/-BuGly)-P2[(4R)-(6-methoxy-5-methylthio-isoquinolin-l-oxo)-S-proline]-Pl(l/?,25
VinylAcca)-CONHSO2Cyclopropane.
To the solution of 100 mg l-Chloro-6-fluoro-isoquinoline (0.55 mmole) in 2 ml dry THF at -78 °C was added IDA in THF (1.3 eq). Dark brown solution was formed, then disulfide was added and the color of solution changed to greenish, then light brown. The reaction was quenched with 2 mL of water and 2 mL of NHtCl, extracted with ethyl acetate, dried over sodium sulfate. The solvent was evaporated under vacuum and the resulted residue was used as crude. LC/MS rt-min (MH*): 2.23 (228) [method B]. The crude material was redissolved in 2 ml of dry THF at -78°C and 1.3 eq. of KOMe was added then the reaction mixture was allowed to warmed up to RT, stirred overnight. The reaction mixture was diluted with ethyl acetate and washed with brine, dried over sodium sulfate. 104 mg was obtained (79%). LC/MS rt-min (MH*): 2.04 (240) [method B]. The intermediate, l-chloro-5-methylthio-6-methoxy isoquinoline was subjected to the tripeptide alkylation protocol described previously. Following the general procedure, 70.0 mg of yellow solid was obtained (42.7%). LC/MS rt-min (MH+): 2.65 (760) [method B]. 'H NMR (400 MHz, CHLOROFORM-D) 8 ppm 0.94 (m, 11 H) 1.17 (s, 9 H) 1.26 (m, 2 H) 1.39 (m, 1 H) 1.83 (dd, 7=8.07, 5.62 Hz, 1 H) 2.01 (m, 2 H) 2.23 (s, 3 H) 2.45 (m, 1 H) 2.79 (m, 1
(dd, 7=9.66,7.21 Hz, 1 H) 4.99 (d, 7=10.27 Hz, 1 H) 5.12 (d, 7=16.87 Hz, 1 H) 5.69 (m, 1 H) 5.74 (s, 1 H) 7.08 (d, 7=9.05 Hz, 1 H) 7.83 (m, 2 H) 8.06 (d, 7=9.05 Hz, 1 H).
Example 208: Preparation of l-chloro-6-methoxy-isoquinolin-5-yl-thiophen-2-yl-methanone
Following the same LDA deprotonation protocol (preparation of Example 203) of 1-chloro-6-fluoro isoquinoline described previously, the initial anion was quenched with 2-thiophenecarboxaldehyde instead, to give l-chloro-6-fluoro isoquinolin-5-yl-thiophen-2-yl-methanol. The material was oxidized to the l-chloro-6-fluoro-isoquinolin-5-yl-thiophen-2-yl-methanone using MnC>2 in benzene in 49.6% overall yield after chromatographic purification. LC/MS rt-min (MH*) [method C]: 2.98 (292). 'H NMR (400 MHz, CHLOROFORM-D) 8 ppm 7.12 (dd, 7=4.89,3.91 Hz, 1 H) 7.40 (m, 1 H) 7.53 (m, 1 H) 7.56 (dd, .7=5.87,0.73 Hz, 1 H) 7.82 (dd, 7=5.01,1.10 Hz, 1 H) 8.27 (d, 7=5.87 Hz, 1 H) 8.54 (ddd, 7=9.29,5.38,0.73 Hz, 1 H). Ipso nucleophilic aromatic displacement of the fluorine atom was accomplished in a solution of excess of. potassium methoxide to give, mainly l-chloro-6-methoxy-isoquinolin-5-yl-thiophen-2-yl-methanone along with 25-33% of 1,6-dimethoxy-isoquinolin-5-yl-thiophen-2-yl-methanone. The crude material (77mg) was used in the alkylation step with the tripeptide without further purification.
Example 209: Preparation of Compound 209
Following the general procedure of tripeptide alkylation (Example 184), 35.3 mg of BOCNH-P3(L-r-BuGly)-P2[(4R)-6-methoxy-5-(thiophene-2-carbonyl)-isoquinoline-l-oxo)-S-proline]-Pl(l/?,2S VinylAcca)-CONHSO2Cyclopropane was obtained as pale solid (26.5%).LC/MS rt-min (MH+): 2.54 (825) [method B]. *H NMR (400 MHz, CD30D) 5 ppm 1.02 (s, 9 H) 1.06 (m, 2 H) 1.22 (m, 2 H) 1.26 (s, 9 H) 1.43
(m, 1 H) 1.87 (dd, 7=7.95,5.50 Hz, 1 H) 2.28 (m, 2 H) 2.62 (dd, 7=13.82,6.97 Hz, 1 H) 2.93 (m, 1 H) 3.90 (s, 3 H) 4.07 (dd, 7=11.62, 3.06 Hz, 1 H) 4.23 (s, 1 H) 4.43 (m, 1 H) 4.55 (dd, .7=9.78,7.34 Hz, 1 H) 5.09 (m, 1 H) 5.29 (d, 7=17.12 Hz, 1 H) 5.74 (m, 1 H) 5.86 (s, 1 H) 6.93 (d, 7=6.11 Hz, 1 H) 7.11 (m, 1 H) 7.32 (dd, 7=3.91,0.98 Hz, 1 H) 7.46 (d, 7=9.29 Hz, 1 H) 7.86 (t, 7=6.72 Hz, 1 H) 7.91 (dd, 7=4.89,1.22 Hz, 1 H) 8.39 (d, 7=9.29 Hz, 1H).
Preparation of P2* by way of cinnamic acid derivatives. The general procedure depicted below has been described extensively elsewhere.
RI
10.0 g of meta-tolyl-acrylic acid (61.7 mmole) was suspended in 50 ml of benzene , 12.6 mL of DPPA (0.95 eq) was added followed by 10.3 ml of triethylamine (1.2 eq). The resulted solution was stirred at room temperature for 1 hr. The volatile was removed under vacuum and the meta-tolyl-acryloyl azide was purified by flash chromatograph to yield 11.5 g of pure compound (quantitative). This material, in 100 mL of diphenylmethane, was introduced dropwise into 100 ml of diphenylmethane previously heated up to 200 °C over a period of an hr. The resulted solution was kept at this temperature for another 4 hour then cooled down to room temp.. White precipitate was formed, it was filtered off. The solid was washed with hexanes three times and dried. The filtrate was diluted with 200 ml of hexanes, the solution was left
(Figure Removed)
standing overnight to allow for separation of the second crop. The materials were combined to give 4.2 g of 6-methyl-isoquinolin-l-ol (50%). LC/MS rt-min (MH*): 1.31 (160) [method B]. 'H NMR (400 MHz, CD3OD) 8 ppm 2.49 (s, 3 H) 6.61 (d, 7=7.32 Hz, 1 H) 7.13 (d, 7=7.02 Hz, 1 H) 7.36 (d, 7=8.24 Hz, 1 H) 7.45 (s, 1 H) 8.18 (d, .7=8.24 Hz, 1 H). The material was suspended in 15 ml of POC13 and brought to reflux for 3 hours. After removal of the POC13 in vacuo, the residue was partitioned between EtOAc (1L), and cold aqueous NaOH (generated from l.ON 200 mL NaOH and 20 mL 10.0 N NaOH) and stirred for 15 min. The organic layer was washed with water (2 x 200 mL), brine (200 mL), dried (MgSO4), and concentrated in vacuo to supply l-chloro-6-methyl-isoquinoline (67.4%). LC/MS rt-min (MET1"): 1.92 (178) [method B]. 'H NMR (400 MHz, CHLOROFORM-D) 8 ppm 2.53 (s, 3 H) 7.47 (d, .7=6.11 Hz, 2 H) 7.56 (s, 1 H) 8.18 (m, 2 H). The final alkylation of l-chloro-6-methyl-isoquinoline with the tripeptide was carried out using the protocol described previously (Example 184).
BOCNH-P3(L-/e/t-BuGly)-P2[(4/?)-(6-methylisoc]uinolin-l-oxo)-5-proline]-Pl(\R,2S Vinyl Acca)-CONHSO2-Cyclopropane: the material was obtained as a white foam in 18% yield. LC/MS R,-min (MNa+) [method B]: 2.64 (720). 'H NMR (400 MHz, CD3OD) 8 ppm 1.05 (m, 13 H) 1.23 (m, 9 H) 1.42 (m, 1 H) 1.86 (dd, 7=7.95,5.50 Hz, 1 H) 2.25 (m, 2 H) 2.49 (s, 3 H) 2.61 (dd, 7=13.82,6.48 Hz, 1 H) 2.93 (m, 1 H) 4.05 (dd, 7=11.86,3.30 Hz, 1 H) 4.23 (s, 1 H) 4.43 (d, 7=11.49 Hz, 1 H) 4.52 (m, 1 H) 5.10 (d, 7=11.49 Hz, 1 H) 5.28 (d, 7=17.12 Hz, 1 H) 5.74 (m, 1 H) 5.83 (s, 1 H) 7.24 (d, 7=5.87 Hz, 1 H) 7.35 (d, 7=8.07 Hz, 1 H) 7.58 (s, 1 H) 7.89 (d, 7=5.87 Hz, 1 H) 8.07 (d, 7=8.56 Hz, 1 H).
Following the general procedure described previously, BOCNH-P3(L-f-BuGly)-P2[(4R)-(l,3-Dioxa-7-aza-cycIopenta[a]naphthalen-6-ol)-S-proline]-Pl(l/?,25 Vinyl Acca)-CONHSO2Cyclopropane, 51.0 mg was obtained as a pale solid (64.9%).LC/MS rt-min (MH*): 2.57 (728) [method B]. 'H NMR (400 MHz, CD3OD) 8 ppm 0.99 (s, 9 H) 1.07 (m, 2 H) 1.18 (m, 11 H) 1.42 (m, 1 H) 1.86 (dd, 7=8.07, 5.62 Hz, 1 H) 2.23 (m, 2 H) 2.59 (dd, 7=13.69,6.85 Hz, 1 H) 2.93 (m, 1 H)4.04 (dd, 7=11.74. 2.20 Hz. 1 H) 4.22 (s. I H) 4.43 (d. 7=11.74 Hz. 1 Hi 4.51 (m. 1 R) 5.10 (d. 7=10.27 Hz, 1 H) 5.28 (d, 7=17.12 Hz, 1 H) 5.73 (m, 1 H) 5.82 (s, 1 H) 6.18 (s, 2 H) 7.13 (d, 7=8.56 Hz, 1 H) 7.19 (d, 7=6.11 Hz, 1 H) 7.81 (d, 7=8.56 Hz, 1 H) 7.85 (d, 7=6.11 Hz, 1H).
Reaction Conditions: (a) LDA in THF; (b) N-fluorobenzenesulfonimide (NFSI) for R = F, or dimethyl sulfide (MeS)2, for R = SMe.
The 5,6-methylenedioxy-l-chloroisoquinoline prepared above was deprotonated directly in the presence of strong base such as LDA to provide the corresponding 7-anion without interferring with the 1-chloro functionality. The 7-anion was quenched with electrophiles such as NFSI (N-fluorobenzenesulfonimide) and dimethylsulfide to produce the corresponding 7-substituted isoquinoline ring system.
Example 212: Preparation of Compound 212
Step 1:
Preparation of 5,6-methylenedioxy-7-fluoro-l-chloro isoquinoline.To a solution of 5,6-methylenedioxy-l-chloro isoquinoline (126mg, 0.61 mmol) in 4 mL of THF under nitrogen at -78 °C was added LDA solution in cyclohexane (1.5 Molar, 0.65 mL, 0.98 mmol). The light brownish solution was stirred for 15 min before it was treated with N-fluorobenzenesulfonimide (NFSI, 0.3g, 1.5 equivalents). TLC analysis showed the formation of a new spot, in addition of the unchanged starting material. Aqueous work up followed by extractions with ethyl acetate furnished an oily crude product which was purified by preparative HPLC to give 52mg (38%). LC/MS rt-min (NOT) [method C]: 3.09 (226). ]H NMR (400 MHz, CHLOROFORM-D) 5 ppm 6.33 (s, 2 H) 7.52 (d, 7=5.87 Hz, 1 H) 7.71 (d, 7=10.51 Hz, 1 H) 8.16 (d, 7=5.87 Hz, 1 H). Step 2: The alkylation of 5,6-methylenedioxy-7-fluoro-1-chloro isoquinoline with the tripeptide was carried out as described previously (Example 184) to provide the major product as a result of fluorine displacement.
BOCNH-P3(L-/-BuGly)-P2[(4R)-(6-Chloro-l,3-dioxa-7-aza-cyclopenta[a]naphthalen-4-oxo)-S-proline]-Pl(l#,2SVinylAcca)-CONHSOzCyclopropane, Shown below
Following the general procedure, 24.3 mg of yellow solid was obtained (24.3%).LC/MS rt-min (MH+): 2.54 (763) [method B]. 'H NMR (400 MHz, CD3OD) 8 ppm 1.00 (s, 9 H) 1.06 (m, 2 H) 1.20 (m, 2 H) 1.29 (s, 9 H) 1.42 (dd, 7=9.41, 5.26 Hz, 1 H) 1.86 (dd, 7=8.07, 5.38 Hz, 1 H) 2.24 (m, 2 H) 2.54 (dd, 7=13.57,6.48 Hz, 1 H) 2.92 (m, 1 H) 4.04 (dd, 7=12.10,2.81 Hz, 1 H) 4.20 (d, 7=7.34 Hz, 1 H) 4.33 (d, 7=12.23 Hz, 1 H) 4.47 (dd, 7=10.52,6.85 Hz, 1 H) 5.10 (dd, 7=10.39,1.59 Hz, 1 H) 5.28 (dd, 7=17.12,1.22 Hz, 1 H) 5.46 (d, 7=5.87 Hz, 1 H) 5.74 (m, 1 H) 6.29 (m, 2 H) 7.40 (s, 1 H) 7.56 (m, 1 H) 8.01 (d, 7=5.62 Hz, 1 H).
Example 213: Preparation of Compound 213
To a solution of 5,6-methylenedioxy-l-chloro isoquinoline (84mg, 0.41 mmol) in 4 mL of THF under nitrogen at -78 °C was added LDA solution in cyclohexane (1.5 Molar, 0.60 mL, 0.9 mmol). The light brownish solution was stirred for 15 min at — 78 °C before it was treated with methyl disulfide (50 uL of neat reagent, 1.4 equivalents). TLC analysis showed the formation of a new spot, in addition of the unchanged starting material. Aqueous work up followed by extractions with ethyl acetate furnished an oily crude product which was purified by preparative HPLC to give 51mg (49%). LC/MS rt-min (MH+) [method C]: 3.39 (254). 'H NMR (400 MHz, CHLOROFORM-D) 5 ppm 2.64 (s, 3 H) 6.29 (s, 2 H) 7.49 (d, 7=4.89 Hz, 1 H) 7.71 (s, 1 H) 8.11 (d, 7=5.87 Hz, 1 H). The alkylation of 5,6-methylenedioxy-7-methylthio-1-chloro isoquinoline with the tripeptide was carried out as described previously (Example 184) to provide the desired product shown below:
BOCNH-P3(L-r-BuGly)-P2[(4R)-(4-methylthio-l,3-dioxa-7-aza-cyclopenta[a]naphthaIen-6-yloxy)-S-proline]-Pl(l^,25 VinylAcca)-CONHSO2Cyclopropane
Following the general procedure, 59.6 mg of yellow solid was obtained (42.2%).LC/MS rt-min (MH+): 2.70 (774) [method B]. 'H NMR (400 MHz, CHLOROFORM-D) 6 ppm 1.02 (m, 11 H) 1.16 (s, 9 H) 1.32 (s, 2 H) 1.45 (m, 1 H) 1.94 (m, 1 H) 2.12 (d, 7=8.56 Hz, 1 H) 2.56 (s, 3 H) 2.62 (m, 2 H) 2.90 (d, 7=4.40 Hz, 1 H) 4.15 (d, 7=7.83 Hz, 2 H) 4.48 (d, 7=12.47 Hz, 1 H) 4.62 (t, 7=7.83 Hz, 1 H) 5.13 (d, 7=10.52 Hz, 1 H) 5.26 (d, 7=17.12 Hz, 1 H) 5.74 (d, 7=16.38 Hz, 1 H) 5.95 (s, 1 H) 6.28 (s, 2H) 7.41 (s, 1 H) 7.59 (s, 1 H) 7.85 (d, 7=6.11 Hz, 1 H).
BOCNH-P3(L-r-BuGly)-P2[(lR)-(2,3-dihydro-lH-4-aza-cyclopenta[a]naphthalen-5-yloxy)-S-proline]-Pl(l/?,2S VinylAcca)-CONHSO2Cyclopropane, shown below was prepared as depicted in the following scheme:
The synthesis of the novel 1-fluoro P2* was made successful by the technologies cited below:
(1) Rigby, James H.; Holsworth, Daniel D.; James, Kelly. Vinyl Isocyanates
In Synthesis. [4 + 2] Cycloaddition Reactions With Benzyne Addends.
Journal Of Organic Chemistry (1989), 54(17), 4019-20
(2) Uchibori, Y.; Umeno, M.; Yoshiokai, H.; Heterocycles, 1992, 34 (8),
1507-1510
Example 214: Preparation of Compounds 214,5-chloro-2,3-dihydro-l#-4-aza-cyclopenta[a]naphthalene, and Compound 215 of Example 215
cyclopenta[a]naphthalen-5-ol was prepared in accordance to the method of Rigby described in (reference 1) cited above. Using POCb as described eJsewhere, Compound 214, was synthesized in 59.8% (430mg). LC/MS rt-min (NOT): 2.29 (204) [method B]. 'H NMR (400 MHz, CHLOROFORM-D) D ppm 2.28 (m, 2 H) 3.19 (q, 7=7.74 Hz, 4 H) 7.58 (m, 1 H) 7.71 (m, 2 H) 8.32 (d, 7=8.56 Hz, 1 H). The chloride is sufficiently reactive to be alkylated with the tripeptide according to the procedure of Example 184, to give the desired product Compound 215. However the overall yield could be doubled if the chloride was exchanged into the fluoride by the method of Uchibori described in (reference 2). Thus 17.0 mg of Compound 215, isolated as a pale yellow solid (23.6%). LC/MS rt-min (MH4"): 2.80 (724) [method B]. 'H NMR (500 MHz, CD3OD) 5 ppm 1.03 (s, 9 H) 1.09 (m, 2 H) 1.24 (m, 1 1 H) 1.44 (dd, 7=8.24, 5.49 Hz, 1 H) 1.88 (dd, 7=7.93, 5.49 Hz, 1 H) 2.25 (m, 4 H) 2.63 (dd, 7=13.73, 7.02 Hz, 1 H) 2.94 (m, 1 H) 3.05 (m, 2 H) 3.10 (m, 2 H)
4.08 (dd, /=11.60,2.75 Hz, 1 H) 4.24 (d, 7=20.45 Hz, 1 H) 4.45 (d, 7=11.90 Hz, 1 H) 4.54 (dd, 7=9.46,7.63 Hz, 1 H) 5.11 (m, 1 H) 5.30 (d, 7=17.09 Hz, 1 H) 5.75 (m, 1 H) 5.87 (s, 1 H) 7.44 (t, 7=7.02 Hz, 1 H) 7.69 (m, 2 H) 8.18 (d, 7=8.24 Hz, 1 H).
Preparation of 3,4-dihydrofuranyI and furanyl isoquinoline P2* components, Examples 217 and 218,
General Synthetic Scheme
Example 217: Preparation of Compound 217,5-chloro-2^-dihydro-l-oxa-4-aza-cyclopenta[a]naphthalene and Compound 218,5-chIoro-l-oxa-4-aza-cyclopenta[a]naphthalene.
This synthesis made use of the technologies described, in part, in the following references:
(1) Hojo, Masaru; Masuda, Ryoichi; Sakaguchi, Syuhei; Takagawa, Makoto, Synthesis (1986), (12), 1016-17
(2) Rigby, James H.; Holsworth, Daniel D.; James, Kelly. Vinyl Isocyanates
In Synthesis. [4 + 2] Cycloaddition Reactions With Benzyne Addends.
Journal Of Organic Chemistry (1989), 54(17), 4019-20
(3) Uchibori, Y.; Umeno, M.; Yoshiokai, H.; Heterocycles, 1992,34 (8),
1507-1510
Both 2,3-dihydro-l-oxa-4-aza-cyclopenta[a]naphthalen-5-ol and l-oxa-4-aza cyclopenta[a]naphthalen-5-ol were produced together when the procedures (references 1 and 2) cited above were followed. Conversion of the pair into their chloro derivatives was accomplished by POCh as usual: The crude hydroxy products (about 2g, pale yellow oil) was treated with 15 mL of POCh and the mixture was brought to reflux for 3 hours. After removal of the POC13 in vacuo, the residue was stirred with EtOAc (1L), and cold aqueous NaOH (220 mL, 1.0 N) for 15 min. The organic layer was separated, washed with water (2 x 200 mL), brine (200 mL), and dried over MgSO4, and concentrated in vacuo to supply 300 mg of Example 217, 5-chloro-2,3-dihydro-l-oxa-4-aza-cyclopenta[a]naphthalene (13.2%) and 100 mg of Example 218, 5-chloro-l-oxa-4-aza cyclopenta[a]naphthalene (4.4%) as light brown solids after silica gel chromatographic separation. Compound 217: LC/MS rt-min (MH+): 2.05 (206) [method B]. !H NMR (400 MHz, CHLOROFORM-D) 8 ppm 3.46 (t, 7=9.05 Hz, 2 H) 4.82 (t, 7=9.17 Hz, 2 H) 7.58 (m, 1 H) 7.66 (m, 1 H) 7.85 (d, 7=8.31 Hz, 1 H) 8.21 (d, 7=8.56 Hz, 1 H). Compound 218: LC/MS rt-min (MH+): 2.16 (204) [method B]. 'H NMR (400 MHz, CHLOROFORM-D) D ppm 7.15 (d, 7=2.20 Hz, 1 H) 7.70 (m, 1 H) 7.89 (m, 2 H) 8.27 (d, 7=8.31 Hz, 1 H) 8.44 (d, 7=8.80 Hz, 1H).
Preparation of 5-fluoro-2,3-dihydro-l-oxa-4-aza-cyclopenta[a]naphthalene, and final P2* coupling products.
The chloride/fluoride exchange was achieved by the method (reference 3) cited above. Thus 90 mgof 5-chloro-2,3-dihydro-l-oxa-4-aza-cyclopenta[a]naphthalene (Example 217) was suspended in 1.5 mLpf Bu4PHF2 and was irradaited under
microwave (Smith Reactor) to about 120 °C for 2 hours. After aqueous work up and column purification, 22 mg of fluoride product was obtained (26.9%). LC/MS rt-min (MET): 1.91 (190) [method B]. The furan derivative (Example 218), 5-chloro-l-oxa-4-aza-cyclopenta[a]naphthalene was sufficiently reactive to be alkylated with the tripeptide directly without fluoride activation.
BOC^fH-P3(L-^BuGly)-P2[(4R)-(2,3-dihydro-l-oxa-4-aza-cyclopenta[a]naphthalen-5-yloxy)-S-proline]-Pl(l/?,25 VinylAcca)-CONHSO2Cyclopropane. Following the
rt-min (MH+): 2.65 (726) [method B]. 'H NMR (400 MHz, CD3OD) 6 ppm 0.99 (s, 9 H) 1.07 (m, 2 H) 1.20 (m, 11 H) 1.40 (m, 1 H) 1.86 (dd, 7=8.07, 5.62 Hz, 1 H) 2.21 (dd, 7=17.48, 8.93 Hz, 2 H) 2.60 (dd, 7=13.45, 6.85 Hz, 1 H) 2.93 (m, 1 H) 3.34 (m, 2 H) 4.04 (dd, 7=1 1.74, 3.18 Hz, 1 H) 4.24 (s, 1H)4.41 (d, 7=1 1.49 Hz, 1 H) 4.51 (m, 1 H) 4.74 (t, 7=9.05 Hz, 2 H) 5.11 (d, 7=10.27 Hz, 1 H) 5.28 (d, 7=17.36 Hz, 1 H) 5.73 (m, 1 H) 5.78 (s, 1 H) 7.43 (m, 1 H) 7.65 (t, 7=7.46 Hz, 1 H) 7.74 (d, 7=8.31 Hz, 1 H) 8.12 (d, 7=8.56 Hz, 1 H).
OCNH-P3(L-f-BuGly)-P2[(4R)-(l-oxa-4-aza-cyclopenta[a]naphthalen-5-yloxy)-S-proline]-Pl(l/?,25 VinylAcca)-CONHSO2Cyclopropane. Following the general alkylation procedure, 13.0 mg of yellow solid was obtained (20%).LC/MS rt-min (MH4): 2.70 (724) [method B]. 'H NMR (500 MHz, CD3OD) 8 ppm 1.01 (S,, 9 H) 1.09 (m, 2 H) 1.22 (s, 9 H) 1.27 (m, 2 H) 1.46 (m, 1 H) 1.89 (dd, 7=7.78,5.65 Hz, 1 H) 2.24 (d, 7=8.55 Hz, 1 H) 2.33 (t, 7=9.92 Hz, 1 H) 2.68 (dd, 7=13.73,7.02 Hz, 1 H) 2.95 (m, 1 H) 4.14 (m, 1 H) 4.26 (s, 1 H) 4.50 (d, 7=11.90 Hz, 1 H) 4.57 (d, 7=17.09 Hz, 1 H) 5.12 (d, 7=10.07 Hz, 1 H) 5.30 (d, 7=17.40 Hz, 1 H) 5.75 (m, 1 H) 5.93 (s, 1 H) 6.97 (d, 7=2.14 Hz, 1 H) 7.51 (t, 7=7.32 Hz, 1 H) 7.81 (t, 7=7.48 Hz, 1 H) 7.92 (s, 1 H) 8.13 (d, 7=7.94 Hz, 1 H) 8.28 (d, 7=8.24 Hz, 1 H).
Preparation of 3-halo and 3-heteroaryl 4-alkoxy and 4-hydroxy isoquinoline PI* derivatives
Reaction conditions: (1) MeOK in DMPU; (2) NBS in dichloroethane; (3) MCPBA in CH2C12; (4) POC13 in dichloroethane; (5) BBr3 in CH2C12; (6) SEM-Chloride and Hunig's Base in CH2C12
by a novel and convenient procedure using ordinary laboratory equipments and reagents. A regioselective NBS bromination gave 3-bromo-4-methoxy isoquinoline (Example 222b) in good yields. MCPBA oxidation proceeded uneventfully to furnish the corresponding N-oxide (Example 222c), which was isomerized into 1-chloro-3-bromo-4-methoxy isoquinoline (Example 222d) using the usual POCb procedure. The 4-methoxy isoquinoline was alkylated with the tripeptide to give the corresponding 3-bromo-4-methoxy P2* derivative suitable for Stille and Suzuki coupling. Alternatively the 4-methoxy isoquinoline was de-methylated in BBrs to give the 4-hydroxy-3-bromo-l-chloro isoquinoline (Example 222e). The 4-hydroxy group was re-protected with SEM-chloride to give the 4-SEM protected intermediate Example 222. The 4-hydroxy compound was re-generated once the coupling was achieved by either an acid induced, or a fluoride induced deprotection protocol.
305 Example 222d: Preparation of l-chloro-3-bromo-4-methoxy isoquinoline
Step 1:
A solution of 4-bromo isoquinoline (15g, 73 mmol, commercial material) in 200 mL dimethyl-3,4,5,6-tetrahydro-2(lH)-pyrimidinone (DMPTJ, Aldrich) was added solid potassium methoxide (5.6gm, 80 mmol). The reaction vessel was immersed in an oil bath at 105 °C for 20 min. The color of mixture changed rapidly from its initial very pale to dark greenish brown immediately after warming. The reaction vessel was removed from the oil bath and was diluted with water, the organic residues were partitioned into ether by multiple extraction with portions of ether. TLC analysis showed two new, spots (1:1 v/v mixture of hexanes and ethyl acetate as eluent) of roughly equal size. These were separated on silica-gel (Merck, type-H) column eluted with straight hexanes, followed by gradual addition of ether into the mobil phase. The desired product, 4-methoxy isoquinoline (4.1gm, 35.3%) was isolated after evaporation of solvents. The other product was also isolated as the reduction by-product isoquinoline. The identity of the by-product was confirmed by NMR comparison with authentic material. Example 222a: LC/MS Rrmin (MH*)
i
[method C]: 1.16 (160). 'H NMR (400 MHz, CHLOROFORM-D) 8 4.07 (s, 3 H) 7.61 (m, 1 H) 7.69 (m, 1 H) 7.93 (d, 7=8.07 Hz, 1 H) 8.08 (s, 1 H) 8.19 (d, 7=8.56 Hz, 1 H) 8.89 (s, 1 H). [Note: this compound was previously prepared in Zoltewicz, John A.; Oestreich, Terence M.; Sale, Alan A, Journal of the American Chemical Society (1975), 97(20), 5889-96 in a "Monel Bomb", and later by a "focused microwave" initiated procedure in Chemg, Yie-Jia, Tetrahedron (2002), 58(6), 1125-1129. The present procedure required neither special high pressure apparatus nor preparative scale microwave equipment].
Step 2:
The material (Example 222a) was subjected to NBS bromination, thus 4-methoxy isoquinoline (Example 222a, 2.1gm, 13.2 mmol) in 1,2-dichloroethane (DCE, 150 mL) was treated with N-bromosuccinimide (NBS, 1.5gm, 8.4 mmol, 0.6X) at 70°C for an hr followed by addition of second portion of l.Sgm NBS. The dark brownish mixture was stirred for another hr before the addition of third portion
of l.Ogm NBS. The bromination was monitored by LC-MS until there was no starting material left. The crude mixture was evaporated to dryness and the desired product was filtered over a short bed of silica-gel (Type-H, Merck, 3cm diameter by 1.5cm height) eluted with straight hexanes first followed by gradually increasing the amount of ether. The desired product, (Example 2225), was isolated as an oily material (1.7gm, 54%). LC/MS R,-min (MH+) [method C]: 2.65 (238). 'H NMR (400 MHz, CHLOROFORM-D) 8 ppm 4.04 (s, 3 H) 7.64 (t, 7=7.58 Hz, 1 H) 7.76 (t, .7=7.09 Hz, 1 H) 7.99 (d, .7=8.31 Hz, 1 H) 8.11 (d, 7=8.31 Hz, 1 H) 8.85 (s, 1 H). [3-Bromo-4-methoxy isoquinoline was previously prepared by a different procedure: Finkentey, Christel; Langhals, Hike; Langhals, Heinz. Chemische Berichte (1983), 116(6), 2394-7. NMR of the product was identical to that reported].
Step 3:
The product from NBS bromination was subjected to MCPBA oxidation in methylene chloride at room temperature. Thus MCPBA (l.SOgm, 77% pure, 8.0 mmol) was added into a solution of 3-bromo-4-methoxy isoquinoline (Example 222b, 1.65gm, 6.9 mmol) in 35 mL of CH2C12. The solution was stirred for 4 hrs forming a white suspension. Sodium bicarbonate solution (5%, freshly prepared. 20 mL) was added into the mixture, organic residues were extracted into C^Ch (10 X 25 mL). Multiple extraction in organic solvent was necessary to recover the somewhat water solution N-oxide product. The crude material obtained after evaporation of solvents was further purified by a filtration over silica-gel to give 1.36gm (5.4 mmol, 78%) of the N-oxide (Example 222c) as a ceraceous solid. LC/MS Rrmin (MH+) [method C]: 1.79 (254). ]H NMR (400 MHz, CHLOROFORM-D) 5 ppm 4.07 (s, 3 H) 7.63 (m, 2 H) 7.72 (m, 1 H) 8.00 (m, 1 H) 8.86 (s, 1 H).
Step 4:
The final N-oxide rearrangement was done as usual in POCb using procedure described elsewhere. Yield of Example 222d was essentially quantitative. LC/MS R,-min (MH+) [method D]: 2.69 (272). 'H NMR as HC1 salt, (400 MHz, CHLOROFORM-D) 8 ppm 4.07 (s, 3 H) 7.81 (m, 1 H) 7.92 (m, 1 H) 8.17 (d, 7=8.31
Hz, 1 H) 834 (d, 7=8.31 Hz, 1 H). 'H NMR as free base, (400 MHz, CHLOROFORM-D) 6 ppm 4.03 (s, 3 H) 7.72 (m, 1 H) 7.81 (m, 1 H) 8.12 (d, 7=8.56 Hz, 1 H) 8.28 (d, 7=8.56 Hz, 1 H).
Example 223: Preparation of ComThe free base (Example 222d) obtained in the previous step was alkylated with the tripeptide fragment using the alkylation protocol (Example 184) described elsewhere to give 79% of the desired product as a paper-white solid. LC/MS Rrmin (MNa+) [method C): 3.91 (814). 1H NMR (400 MHz, CD3OD) 5 ppm 1.02 (s, 9 H) 1.06 (dd, 7=8.07, 1.47 Hz, 2 H) 1.22 (m, 11 H) 1.42 (dd, 7=9.78, 5.14 Hz, 1 H) 1.86 (dd, 7=8.07, 5.38 Hz, 1 H) 2.22 (dd, 7=18.10,9.29 Hz, 1 H) 2.28 (m, 1 H) 2.61 (dd, 7=13.57,6.97 Hz, 1 H) 2.93 (m, 1 H) 3.92 (s, 3 H) 4.06 (dd, 7=11.86, 2.81 Hz, 1 H) 4.22 (s, 1 H) 4.43 (d, 7=11.49 Hz, 1 H) 4.51 (m, 1 H) 5.10 (d, 7=10.52 Hz, 1 H) 5.28 (d, 7=17.12 Hz, 1 H) 5.74 (m, 1 H) 5.81 (s, 1 H) 7.56 (t, 7=7.58 Hz, 1 H) 7.78 (t, 7=7.58 Hz, 1 H) 8.00 (d, 7=8.31 Hz, 1 H) 8.16 (d, 7=8.56 Hz, 1 H).
Example 224 and 225: Preparation of Compounds 224 and Compound 225
The 4-methoxy group in l-chloro-3-bromo-4-methoxy isoquinoline (Example 222d) described previously was converted into a-trimethylsilyl ethoxy methyl (SEM) moiety by the following procedure. l-Chloro-3-bromo-4-methoxy isoquinoline (Example 222d) was demethylated using BBr3 (final adjusted reaction concentration was 0.2-0.3 Molar BBr3) at room temperature for 12 hrs. The high BBr3
concentration for such de-methylation was found to be necessary and efficient. The crude reaction mixture was diluted with 50 volumes of anhydrous methanol prior to evaporation to dryness. The demethylation was essentially quantitative. Example 222e: LCMS Rt-min (MH+) [method D]: 2.32 (258). *H NMR of free HC1 salt (400 MHz, CHLOROFORM-D) 8 ppm 5.83 (br. s, 1 H) 7.73 (t, 7=7.70 Hz, 1 H) 7.79 (t, 7=7.58 Hz, 1 H) 8.22 (m, 2 H). The 4-hydroxy-3-bromo-l-chloro isoquinoline (Example 222e) was re-protected with 2-(trimethylsilyl) ethoxy methyl chloride (SEM-C1). The crude free base from the previous preparation was dried to 40 microns(Hg) at room temperature prior to re-protection with SEM-chloride. To a solution of the 4-hydroxy compound (Example 222e, 1.33gm, 5.2 rnmol) in methylene chloride (50 ml) at 0°C was added sequentially diisopropylethyl amine (2 mL, 11.5 mmol) and SEM-chloride (1.8 mL, 10 mmol). The mixture was stirred for 10 min before it was washed with a freshly prepared NaHCOs solution (5%, 100 mL). The organic residues were extracted into several portions of methylene chloride, the combined organic layers were back-washed with 20 mL deionized water before it was concentrated in vacuo. The SEM protection was essentailly quantitative. Example 222: LC/MS Rt-min (MH+) [method D]: 3.40 (410). JH NMR (400 MHz, CHLOROFORM-D) 5 ppm 0.03 (s, 9 H) 0.99 (m, 2 H) 3.98 (m, 2 H) 5.33 (s, 2 H) 7.72 (m, 1 H) 7.80 (m, 1 H) 8.17 (d, 7=8.56 Hz, 1 H) 8.27 (d, 7=8.07 Hz, 1 H). Alkylation of 4-SEM protected isoquinoline with tripeptide: Compound 224 and Compound 225 were generated from the same tripeptide alkylation reaction. The 4-hydroxy compound (Compound 224) was produced most probably as a result of the TFA present during the preparative HPLC purification.
Example 224 (15.4%): LC/MS R,-min (MNa+) [method D]: 2.87 (800). ]HNMR (400 MHz, CD3OD) 8 ppm 1.02 (s, 9 H) 1.06 (d, 7=8.31 Hz, 2 H) 1.25 (s, 9 H) 1.42 (s, 2 H) 1.86 (m, 1 H) 2.23 (m, 2 H) 2.60 (dd, 7=13.21,7.34 Hz, 1 H) 2.93 (m, 1 H) 4.06 (d, 7=11.00 Hz, 1 H) 4.24 (m, 2 H) 4.38 (d, 7=11.98 Hz, 1 H) 4.49 (dd, 7=9.78, 7.09 Hz, 1 H) 5.10 (d, 7=10.03 Hz, 1 H) 5.28 (d, 7=17.36 Hz, 1 H) 5.72 (m, 1 H) 5.76 (s, 1 H) 7.52 (t, 7=7.46 Hz, 1 H) 7.71 (t, 7=7.09 Hz, 1 H) 8.09 (d, 7=4.40 Hz, 1 H) 8.11(d,7=4.16Hz, 1H).
Example 225 (8.0%): LC/MS Rrmin ([M-BOCf) [method D]: 3.46 (808). 'H NMR (400 MHz, CD3OD) 6 ppm 0.01 (s, 9 H) 0.96 (m, 2 H) 1.02 (s, 11 H) 1.06 (d, 7=6.60 Hz, 2 H) 1.24 (s, 9 H) 1.42 (m, 1 H) 1.86 (dd, 7=7.83, 5.38 Hz, 1 H) 2.25 (m, 2 H) 2.62 (dd, 7=13.69,7.34 Hz, 1 H) 2.93 (m, 1 H) 3.97 (m, 2 H) 4.07 (dd, 7=10.88,3.55 Hz, 1 H) 4.23 (s, 1 H) 4.43 (d, 7=11.25 Hz, 1 H) 4.50 (m, 1 H) 5.10 (d, 7=10.76 Hz, 1 H) 5.25 (m, 3 H) 5.74 (m, 1 H) 5.82 (s, 1 H) 7.57 (m, 1 H) 7.77 (t, 7=7.83 Hz, 1 H) 8.06 (d, 7=8.56 Hz, 1 H) 8.16 (d, 7=8.31 Hz, 1 H).
Preparation of 4//-[l,3]dioxino[5,4-c]isoquinolin P2* derivatives
Example 226
Reaction Conditions: (1) MeOK in DMPU; (2) MCPBA in CH2C12; (3) POCI3 in DCE; (4) BBr3 in CH2C12; (5) HCHO solution in 40% H2SO4 by procedure of Synthesis of l,3-oxazino[5,6- c]isoquinolines and related compounds. Miyoko Toyama and Hirotaka Otomasu, Chem. Pharm. Bull. 33(12), 5543-5546, 1985; (6) Fiuororinaiion procedure by Uuhiburi, Y.; Uiiiciio, M., Yosliiokai, K.; Het 1992,34(8), 1507-1510
Example 227: Preparation of Compound 227
6-Chloro-l,3-Oxazino[5,6-c]isoquinoline was prepared by the procedure of Miyoko Toyama and Hirotaka Otomasu starting from l-chloro-4-hydroxy isoquinoline. The
starting material: l-chIoro-4-hydroxy isoquinoline (Example 226c) was prepared by the synthetic sequence shown above. MCPBA oxidation of 4-methoxy isoquinoline (Example 222a) was carried as usual to give 79.1% of the corresponding N-oxide (Example 226a). The material was converted into the 1-chloro derivative immediately afterward in POC13 to give the chloride (Example 226b) in essentially quantitative yield. The crude l-chloro-4-methoxy isoquinoline was de-methylated in BBr3 at room temperature to give the corresponding l-chloro-4-hydroxy isoquinoline (Example 226c) after treating the crude BBra mixture with anhydrous methanol at room temperature, followed by evaporation to get rid of excess of borate residues. The reaction of Miyoko Toyama and Hirotaka Otomasu gave 266mg of 6-chloro-l,3-oxazino[5,6-c]isoquinoline (Example 226d, 62.3%) overall yield from 300mg of 4-methoxy isoquinoline in 4 steps. LC/MS Rt-min ([M-HCHOJET) [method D]: 2.45 (192). 'H NMR (400 MHz, CHLOROFORM-D) 6 ppm 5.02 (s, 2 H) 5.41 (s, 2 H) 7.68 (m, 1 H) 7.77 (ddd, 7=8.25,6.91,1.22 Hz, 1 H) 8.10 (d, 7=8.31 Hz, 1 H) 8.26 (d, 7=8.56 Hz, 1 H).
The chloride was found to be unreactive under the alkylation protocol of Example 184. The corresponding 6-fluoro-l,3-oxazino[5,6-c]isoquinoline (Example 226) was prepared by the method of [Uchibori, Y.; Umeno, M.; Yoshiokai, H.; Heterocycles, 1992, 34 (8), 1507-1510] cited earlier. The reaction was not allowed to go to completion, and the crude reaction mixture was recovered as a mixture of ratio of 1:2.4 (Cl: F). Without further purification, the chloride/fluoride mixture was alkylated with the tripeptide using the procedure of Example 184 to give 66mg (50.0%) of BOCNH-P3(L-f-BuGly)-P2[(4R)-( l,3-oxazino[5,6-c]isoquinoline-6-oxo)-S-pro!ine]-Pl(l/?,2S VinylAcca)-CONHS02Cyclopropane after preparative HPLC purification. LC/MS R,-min (MNa+) [method D]: 3.03 (764). 'H NMR (400 MHz, CD3OD) 8 ppm 1.01 (s, 9 H) 1.06 (dd, 7=8.07,1.96 Hz, 2 H) 1.22 (s, 10 H) 1.34 (d, 7=6.11 Hz, 1 H) 1.42 (m, 1 H) 1.86 (dd, 7=8.07, 5.38 Hz, 1 H) 2.23 (m, 2 H) 2.59 (dd, 7=13.82,6.97 Hz, 1 H) 2.93 (m, 1 H) 4.03 (dd, 7=11.86,3.06 Hz, 1 H) 4.23 (s, 1 H) 4.4.1 (d, 7=11.98 Hz, 1 H) 4.50 (dd, 7=9.66,6.97 Hz, 1 H) 4.87 (m, 2 H) 5.11 (d, 7=10.52 Hz, 1 H) 5.28 (d, 7=17.12 Hz, 1 H) 5.34 (s, 2 H) 5.74 (m, 2 H) 7.51 (t,
7=7.46 Hz, i H) 7.70 (t, 7=7.58 Hz, 1 H) 7.95 (d, .7=8.31 Hz, 1 H) 8.12 (d, 7=8.31 Hz, 1H).
Preparation of 4-methoxy-3-heteroaryl and 3-azoyl isoquinoline P2* derivatives via Suzuki and Stille coupling reactions
The coupling technologies shown below demonstrated the general ultility with the bromo derivative of Example 223. It is understood that a similar protocol is equally applicable to other combinations coupling reagents and catalysts other than boron and tin.
Example 229: Preparation of Compound 229
BOCNH-P3(L-r-BuGly)-P2[(4R)-(3-furan-3-yl-4-methoxy-isoquinolin-l-oxo)-S-proline]-Pl(l^,25 VinylAcca)-CONHSO2Cyclopropane via a Suzuki coupling shown below:
22 mg (0.028 mmole) of Example 223 was dissolve in 1 ml of DMF, 9.4 mg of the commercial boronic acid (3 eq), 3 mg of catalyst (10% mmole) and 18 mg of cesium carbonate were added. The mixture was degassed twice, and then heated up to 110 °C for 3 hours.The final product was purified by prep-HPLC, 13.6 mg of yellow solid was obtained (64.0%).LC/MS rt-min (MH*): 2.85 (780) [method B]. 'H NMR (500 MHz, CD3OD) 5 ppm 1.09 (m, 11 H) 1.26 (m, 12 H) 1.68 (m, 1 H) 2.27 (s, 1 H) 2.64 (m, 2 H) 2.97 (m, 1 H) 3.86 (s, 3 H) 4.15 (d, 7=10.38 Hz, 1 H) 4.28 (s, 1 H) 4.43 (d,
7=10.99 Hz, 1 H) 4.56 (m, 1 H) 5.11 (m, 2 H) 5.63 (m, 1 H) 5.99 (s, 1 H)7.20 (s, 1 H) 7.51 (m, 1 H) 7.61 (m, 1 H) 7.75 (t, 7=7.17 Hz, 1 H) 8.03 (d, 7=8.24 Hz, 1 H) 8.16 (d, 7=8.24 Hz, 1 H) 8.27 (s, 1 H).
Example 230: Preparation of Compound 230
BOCNH-P3(Z,-/-BuGly)-P2[(4R)-(3-furan-2-yl-4-methoxy-isoquinolin-l-oxo)-S-proline]-Pl(l#,2S VinylAcca)-CONHSO2Cyclopropane was synthesized via a Stille coupling reaction shown below:
0 mg (0.05 mmole)of Example 223,4 mg of catalyst .(5% mmole) and lOOjil (4 eq) of the commercial tin reagent was dissoled in 1 ml of toluene, the mixture was degassed twice and then heated up to 90 °C for overnight. After prep HPLC separation, 19.6 mg of greenish solid was obtained (50.0%).LC/MS it-min (MET1"): 2.76 (780) [method B]. 'H NMR (400 MHz, CD3OD) 5 ppm 0.94 (m, 2 H) 0.98 (s, 9 H) 1.09 (m, 2 H) 1.25 (s, 9 H) 1.39 (m, 1 H) 1.60 (m, 1 H) 2.35 (m, 1 H) 2.48 (m, 1 H) 2.74 (m, 1 H) 2.95 (m, 1 H) 3.87 (s, 3 H) 4.14 (m, 1 H) 4.22 (d, 7=4.16 Hz, 1 H) 4.41 (s, 1 H) 4.69 (m, 1 H) 5.26 (m, 1 H) 5.35 (m, 1 H) 5.93 (s, 1 H) 6.03 (m, 1 H) 6.61 (m, 1 H) 7.16 (d, 7=3.18 Hz, 1 H) 7.50 (d, 7=7.58 Hz, 1 H) 7.67 (s, 1 H) 7.73 (t, 7=7.34 Hz, 1 H) 8.04 (m, 1 H) 8.17 (d, 7=8.31 Hz, 1 H).
BOCNH-P3(L-/-BuGly)-P2[(4R)-(3-pyrazine-2-yl-4-methoxy-isoquinolin-l-oxo)-S-proline]-Pl(l/?,2S VinylAcca)-CONHSO2Cyclopropane was similarly prepared by a Stille coupling reaction in 7.1% yield. LC/MS rt-min (MH1): 2.51 (792) [method B]. 'HNMR (400 MHz, CD3OD) 6ppm 0.98 (m, 9 H) l.ll (m, 2 H) 1.19 (s, 9 H) 1.27 (m, 2 H) 1.42 (m, 1 H) 2.37 (m, 1 H) 2.48 (m, 2 H) 2.81 (m, 1 H) 2.97 (m, 1 H) 3.83 (s, 3 H) 4.07 (s, 1 H) 4.20 (d, 7=4.16 Hz, 1 H) 4.54 (d, 7=11.49 Hz, 1 H) 4.72 (m, 1 H) 5.27 (m, 1 H) 5.39 (m, 1 H) 5.96 (s, 1 H) 6.04 (m, 1 H) 7.63 (s, 1 H) 7.83 (s, 1 H) 8.17 (s, 1 H) 8.26 (s, 1 H) 8.60 (d, 7=2.20 Hz, 1 H) 8.76 (d, 7=2.20 Hz, 1 H) 9.33 (s, 1H).
BOCNH-P3(L-r-BuGly)-P2[(4R)-(4-methoxy-3-thiazol-2-yl-isoquinolin-l-oxo)-S-proline]-Pl(l/?,2S VinylAcca)-CONHSO2CycIopropane was similarly prepared by a Stille coupling reaction in 32.2% yield. LC/MS rt-min (MH4): 2.42 (797) [method B] 'H NMR (400 MHz, CD3OD) 6 ppm 1.03 (S, 9 H) 1.07 (m, 2 H) 1.13 (S, 9 H) 1.22
(m, 2 H) 1.43 (dd, 7=9.78,5.14 Hz, 1 H) 1.88 (dd, 7=8.07,5.38 Hz, 1 H) 2.23 (q, 7=8.97 Hz, 1 H) 2.36 (m, 1 H) 2.67 (m, 1 H) 2.94 (m, 1 H) 4.10 (s, 3 H) 4.15 (m, 1 H) 4.18 (s, 1 H) 4.53 (d, 7=25.92 Hz, 1 H) 4.59 (dd, 7=10.27, 7.09 Hz, 1 H) 5.12 (m, 1 H) 5.29 (d, 7=17.36 Hz, 1 H) 5.73 (m, 1 H) 6.09 (s, 1 H) 7.74 (t, 7=7.58 Hz, 1 H) 7.91 (t, 7=7.70 Hz, 1 H) 8.00 (d, 7=3.42 Hz, 1 H) 8.18 (d, 7=3.18 Hz, 1 H) 8.22 (d, 7=8.31 Hz, 1 H) 8.29 (d, 7=8.31 Hz, 1 H).
Example 233: Preparation of Compound 233
Following the general tripeptide alkylation procedure with the commercial 4-chlorofuro[3,2-c]pyridine, 5.7 mg of yellow solid was obtained (8.2%).LC/MS rt-min (MR*): 2.32 (674) [method B]. ]H NMR (400 MHz, CD3OD) 5 ppm 1.00 (s, 9 H) 1.07 (m, 2 H) 1.21 (m, 11 H) 1.41 (m, 1 H) 1.86 (dd, 7=8.07,5.38 Hz, 1 H) 2.22 (dd, 7=17.61, 9.05 Hz, 2 H) 2.54 (dd, 7=13.69, 7.09 Hz, 1 H) 2.92 (m, 1 H) 4.06 (m, 1 H) 4.21 (m, 1 H) 4.32 (s, 1 H) 4.49 (m, 1 H) 5.11 (dd, 7=10.27,1.47 Hz, 1 H) 5.29 (dd, 7=17.36, 1.22 Hz, 1 H) 5.74 (m, 1 H) 5.81 (s, 1 H) 6.83 (d, 7=1.22 Hz, 1 H) 7.19 (d, 7=5.87 Hz, 1 H) 7.76 (d, J=1.22Hz, 1 H) 7.97 (d, 7=5.87 Hz, 1 H).
Example 235: Preparation of Compound 235
Following the general tripeptide alkylation procedure with the commercial 4-chlorothieno[3,2-c]pyridine, 20.0 mg of yellow solid was obtained (28.1%).LC/MS rt-min (MtT): 2.50 (690) [method BJ. *H NMR (400 MHz, CD3OD) 5 ppm 1.01 (s, 9 H) 1.06 (m, 2 H) 1.21 (m, 11 H) 1.42 (m, 1 H) 1.86 (dd, 7=8.19, 5.50 Hz, 1 H) 2.24 (m, 2 H) 2.57 (dd, 7=13.69,6.85 Hz, 1 H) 2.93 (m, 1 H) 4.05 (dd, 7=11.98,3.18 Hz, 1 H) 4.22 (s, 1 H) 4.39 (d, 7=11.74 Hz, 1 H) 4.50 (dd, 7=9.90,7.21 Hz, 1 H) 5.10 (dd, 7=10.39, 1.34 Hz, 1 H) 5.28 (d, 7=17.12 Hz, 1 H) 5.73 (m, 1 H) 5.81 (s, 1 H) 7.45 (d, 7=5.62 Hz, 1 H) 7.53 (m, 2 H) 7.94 (d, 7=5.87 Hz, 1 H).
Following the general tripeptide alkylation procedure with the commercial 3,5-dichloro-l,2,4-thiadiazole, 8.0 mg of yellow solid was obtained (11.9%).LC/MS rt-min (MNa+): 2.37 (697) [method B]. 'H NMR (400 MHz, CD3OD) 5 ppm 1.00 (s, 9 H) 1.06 (m, 2 H) 1.22 (m, 2 H) 1.36 (s, 9 H) 1.42 (m, 1 H) 1.86 (dd, 7=8.07,5.38 Hz, 1 H) 2.25 (m, 2 H) 2.60 (dd, 7=14.18, 6.85 Hz, 1 H) 2.92 (m, 1 H) 4.03 (dd, 7=12.47,
3.18 Hz, 1 H) 4.17 (s, 1 H) 4.42 (m, 2 H) 5.11 (dd, 7=10.27,1.71 Hz, 1 H)5.29 (dd, 7=17.12, 1.47 Hz, 1 H) 5.68 (s, 1 H) 5.74 (m, 1 H).
Example 237: Preparation of Compound 237
BOCNH-P3(L-/-BuGly)-P2[(4R)-(quinoxaline-2-oxo)-S-proline]-Pl(l/?)25 VinylAcca)-CONHSO2Cyclopropane, Shown below
Following the general tripeptide alkylation procedure with commercial 2-chloroquinoxaline, 113.0mg of yellow solid was obtained (19.2%).LC/MS rt-min (MNa+): 2.48 (707) [method B). JH NMR (400 MHz, CD3OD) 6 ppm 1.01 (s, 9 H) 1.06 (m, 2 H) 1.22 (m, 11 H) 1.42 (m, 1 H) 1.87 (dd, 7=8.19,5.50 Hz, 1 H) 2.24 (m, 1 H) 2.31 (m, 1 H) 2.57 (dd, 7=13.57,6.97 Hz, 1 H) 2.93 (m, 1 H) 4.09 (dd, 7=11.98, 3.18 Hz, 1 H) 4.17 (s, 1 H) 4.38 (d, 7=11.74 Hz, 1 H) 4.50 (dd, 7=10.27,7.09 Hz, 1 H) 5.11 (dd, 7=10.27,1.71 Hz, 1 H) 5.29 (dd, 7=17.12,1.47 Hz, 1 H) 5.74 (m, 1 H) 5.87 (s, 1 H) 7.62 (t, 7=7.46 Hz, 1 H) 7.73 (t, 7=7.70 Hz, 1 H) 7.87 (m, 1 H) 7.96 (d, 7=8.31 Hz, 1 H) 8.42 (s, 1 H).
Example 238: Preparation of Compound 238
BOCNH-P3(L-r-BuGly)-P2[(4R)-(2-trifluoro-6-fluoroquinoline-4-oxo)-S-proline]-Pl( \R,2S VinylAcca)-CONHSO2Cyclopropane, Shown below
Following the general tripeptide alkylation procedure with the commercial 2-trifluoromethyl-4-chloro-6-fluoro quinoline, 17.0 mg of yellow solid was obtained (23.2%).LC/MS rt-min (MNa+): 2.66 (792) [method B]. 1H NMR (400 MHz, CD3OD) 8 ppm 1.02 (s, 9 H) 1.06 (m, 2 H) 1.17 (s, 9 H) 1.23 (m, 2 H) 1.42 (m, 1 H) 1.86 (dd, 7=8.07, 5.38 Hz, 1 H) 2.21 (q, 7=8.64 Hz, 1 H) 2.32 (m, 1 H) 2.63 (dd, 7=13.94, 6.85 Hz, 1 H) 2.93 (m, 1 H) 4.08 (m, 1 H) 4.18 (s, 1 H) 4.53 (m, 2H) 5.10 (m, 1 H) 5.27 (d, 7=17.12 Hz, 1 H) 5.58 (s, 1 H) 5.72 (m, 1 H) 7.39 (s, 1 H) 7.65 (m, 1 H) 7.83 (dd, 7=9.29, 2.69 Hz, 1 H) 8.12 (dd, 7=9.29, 5.14 Hz, 1 H).
BOChfH-P3(L-r-BuGly)-P2[(4R)-(6-fluoroquinoline-4-oxo)-S-proline]-Pl(l^,25 VinylAcca)-CONHSO2Cyclopropane, Shown below
Following the general tripeptide alkylation procedure with the commercial 4-chloro-6-fluoro quinoline, 26.0 mg of yellow solid was obtained (39.0%).LC/MS rt-min (MH*): 1.98 (702) [method B]. 'H NMR (400 MHz, CD3OD) 5 ppm 1.04 (m, 11 H)
1.14 (s, 9 H) 1.23 (m, 2 H) 1.42 (m, 1 H) 1.87 (dd, 7=8.07,5.38 Hz, 1 H) 2.23 (q, 7=8.80 Hz, 1 H) 2.41 (m, 1 H) 2.75 (dd, 7=14.43,6.85 Hz, 1 H) 2.93 (m, 1 H) 4.09 (s, 1 H) 4.12 (d, 7=2.69 Hz, 1 H) 4.61 (m, 2 H) 5.11 (dd, 7=10.39, 1.59 Hz, 1 H) 5.28 (dd, 7=17.24,1.34 Hz, 1 H) 5.70 (m, 1 H) 5.75 (s, 1 H) 7.62 (d, 7=6.60 Hz, 1 H) 7.93 (m, 1 H) 8.06 (dd, 7=8.68,2.57 Hz, 1 H) 8.20 (dd, 7=9.29,4.40 Hz, 1 H) 9.06 (d, 7=6.60 Hz, 1 H). A small amount of the by-product due to F-displacement was also isolated from the same reaction and was separated by preparative HPLC.
Example 240, Isolation of Compound 240
BOCNH-P3(L-r-BuGly)-P2[(4R)-(4-chloroquinoline-6-oxo)-S-proline]-Pl(l/^,25 VinylAcca)-CONHS02Cyclopropane, Shown below
By-product, 8.0 mg of yellow solid was obtained (11.7%).LC/MS rt-min (MNa+): 2.240 (740) [method B]. 'H NMR (400 MHz, CD3OD) S ppm 1.00 (s, 9 H) 1.06 (m, 2 H) 1.23 (m, 11 H) 1.42 (m, 1 H) 1.86 (dd, 7=8.19, 5.50 Hz, 1 H) 2.22 (m, 1 H) 2.29 (m, 1 H) 2.55 (m, 1 H) 2.92 (m, 1 H) 4.09 (m, 1 H) 4.21 (s, 1 H) 4.30 (m, 1 H) 4.46 (dd, 7=10.27,6.85 Hz, 1 H) 5.11 (dd, 7=10.27,1.47 Hz, 1 H) 5.28 (dd, 7=17.36, 1.47 Hz, 1 H) 5.43 (s, 1 H) 5.74 (m, 1 H) 7'.60 (dd, 7=9.29, 2.45 Hz, 1 H) 7.64 (d, 7=2.45 Hz, 1 H) 7.81 (d, 7=4.89 Hz, 1 H) 8.06 (d, 7=9.29 Hz, 1 H) 8.72 (d, 7=5.14 Hz, 1 H).
Example 241: Preparation of Compound 241
BOCNH-P3(L-/-BuGly)-P2[(4R)-(8-fluoroquinoline-4-oxo)-S-proline]-Pl(l/?,25 VinylAcca)-CONHS02Cyclopropane, Shown below
Following the general tripeptide alkylation procedure with the commercial 4-chloro-8-fluoro quinoline, 10.3 mg of yellow solid was obtained (14.7%).LC/MS rt-min (MIT): 1.95 (702) [method B]. !H NMR (400 MHz, CD3OD) 5 ppm 0.98 (s, 9 H) 1.06 (m, 2 H) 1.14 (s, 9 H) 1.22 (m, 2 H) 1.42 (m, 1 H) 1.87 (dd, 7=8.07, 5.62 Hz, 1 H) 2.22 (q, .7=8.72 Hz, 1 H) 2.41 (m, 1 H) 2.74 (dd, 7=14.06,6.97 Hz, 1 H) 2.93 (m, 1 H) 4.11 (m, 2 H) 4.57 (dd, 7=10.39,6.97 Hz, 1 H) 4.66 (d, 7=12.23 Hz, 1 H) 5.11 (dd, 7=10.27,1.22 Hz, 1 H) 5.28 (d, 7=17.12 Hz, 1 H) 5.71 (m, 2 H) 7.59 (d, 7=6.36 Hz. 1 H} 7,75 (m. 1 H) 7.86 (m. 1 ITi 8.23 (d. 7=8.56 Hz. ! m Q 02 rd .7=6 % H* I H). During the preparative HPLC purification, a by-product was also isolated. The 4-chloroquinoline-8-oxo- quinoline derivative was formed as a result of displacement of the fluorine atom instead of the chlorine leaving group.
Example 242, Isolation of Compound 242
BOCNH-P3(L-/-BuGly)-P2[(4R)-(4-chloroquinoline-8-oxo)-S-proline]-Pl(l/?,25 VinylAcca)-CONHS02Cyclopropane, Shown below
Thus the by-product, 9.0 mg of yellow solid was obtained (13.2%).LC/MS rt-min (MH+): 2.37 (718) [method B]. :H NMR (400 MHz, CD3OD) 5 ppm 1.00 (s, 9 H) 1.06 (m, 2 H) 1.12 (s, 9 H) 1.23 (m, 2 H) 1.43 (dd, 7=9.41, 5.50 Hz, 1 H) 1.87 (dd, 7=8.19, 5.50 Hz, 1 H) 2.25 (m, 1 H) 2.35 (m, 1 H) 2.67 (dd, 7=13.94, 7.09 Hz, 1 H) 2.93 (m, 1 H) 4.10 (m, 1 H) 4.13 (s, 1 H) 4.43 (d, 7=11.98 Hz, 1 H) 4.65 (dd, 7=10.03, 7.09 Hz, I H) 5.12 (dd, 7=10.27,1.47 Hz, 1 H) 5.30 (dd, 7=17.12,1.22 Hz, 1 H) 5.51 (s, 1 H) 5.75 (m, 1 H) 7.61 (d, 7=7.83 Hz, 1 H) 7.88 (t, 7=8.19 Hz, 1 H) 8.04 (m, 2 H) 8.91 (d, 7=5.38 Hz, 1 H).
Example 243: Preparation of Compound 243
BOCNH-P3(L-f-BuGly)-P2[(4R)-(3-hydroxyquinoxaline-2-oxo)-S-proline]-Pl(l^,25 VinylAccaJ-CONHSOaCyclopropane, Shown below
Following the general tripeptide alkylation procedure with commercial 2,3-dichloroquinoxaline, the mono alkylation product was spontaneously hydrolyzed to
give 8.0 mg of pale yellow solid (11.4%). LC/MS rt-min (MNa*): 2.42 (723) [method B]. 'H NMR (400 MHz, CD3OD) 6 ppm 0.99 (s, 9 H) 1.05 (m, 2 H) 1.24 (s, 9 H) 1.40 (m, 3 H) 1.86 (m, 1 H) 2.24 (m, 2 H) 2.53 (m, 1 H) 2.92 (m, 1 H) 4.06 (m, 1 H) 4.16 (s, 1 H) 4.40 (m, 1 H) 4.55 (dd, 7=10.39, 6.97 Hz, 1 H) 5.11 (m, 1 H) 5.29 (m, 1 H) 5.73 (m, 1 H) 5.78 (s, 1 H) 7.15 (s, 1 H) 7.26 (m, 2 H) 7.36 (t, 7=7.83 Hz, 1 H) 7.6 l(d, 7=8.07 Hz, 1 H).
Example 244: Preparation of Compound 244
Using a combination of Pd° coupling scheme and a step by step procedure starting from 6-bromo-l-chloro isoquinoline, BOCNH-P3(L-f-BuGly)-P2[(4R)-(6-carboxylic aciddimethylamideisoquinoline-l-oxo)-S-proline]-Pl(l/?,25VinylAcca)-CONHSC^Cyclopropane, was prepared.
LC/MS rt-min (MNa+): 2.34 (777) [method B]. JH NMR (400 MHz, CD3OD) 5 ppm 0.98 (m, 11 H) 1.23 (m, 11 H) 1.35 (m, 1 H) 1.91 (m, 1 H) 2.29 (m, , 2 H) 2.47 (m, 1 H) 2.58 (m, 1 H) 2.97 (s, 3 H) 3.11 (s, 3 H) 4.09 (m, 1 H) 4.24 (s, 1 H) 4.44 (m, 1 H) 4.61 (m, 1 H) 5.16 (m, 2 H) 5.57 (m, 1 H) 5.90 (s, 1 H) 7.38 (d, 7=5.87 Hz, 1 H) 7.50 (d, 7=8.07 Hz, 1 H) 7.86 (s, 1 H) 8.03 (d, 7=5.87 Hz, 1 H) 8.27 (d, 7=8.56 Hz, 1 H),
During one of the Pd° catalyzed Stille coupling preparations (Example 230), a side product was isolated as a minor product which was subsequently identified as: BOCNH-P3(L-/-BuGly)-P2[(4R)-(3-chloro-4-methoxyisoquinoline-l-oxo)-S-proline]-Pl(l#,2S VinylAcca)-CONHSO2Cyclopropane, shown below
LC/MS rt-min (MNa+): 2.62 (770) [method B]. 'H NMR (400 MHz, CD3OD) 6 ppm 1.01 (s, 9 H) 1.08 (m, 2 H) 1.18 (s, 9 H) 1.27 (m, 2 H) 1.37 (m, 1 H) 1.62 (m, 1 H) 2.36 (m, 2 H) 2.73 (m, 1 H) 2.97 (m, 1 H) 3.92 (s, 3 H) 4.02 (m, 1 H) 4.18 (s, 1 H) 4.48 (m, 1 H) 4.66 (m, 1 H) 5.30 (m, 2 H) 5.78 (s, 1 H) 6.04 (m, 1 H) 7.53 (t, 7=7.70 Hz, 1 H) 7.77 (t, 7=7.58 Hz, 1 H) 8.00 (d, 7=8.56 Hz, 1 H) 8.19 (d, 7=8.07 Hz, 1 H).
Section F:
Example 250: Preparation of Compound 250
A solution of 3-phenyI-but-2-enoic acid (16.2 g), diphenylphosphoryl azide (27.5 g), and triethylamine (10.1 g) in benzene (100 mL) was stirred for 1 h. After filtration through a silica gel plug washing with benzene and concentration, the residue was dissolved in diphenylmethane (80 mL) and refluxed for 3 h. After cooling to rt, solids were collected through a plug washing with benzene and dried to give 10 g (63%) of the desired product as a solid. !H NMR (400 MHz, CD3OD) 5 ppm 2.30 (s, 3 H), 7.00 (s, 1 H), 7.54 (m, 1 H), 7.77 (m, 2 H), 8.33 (d, 7=7.34 Hz, 1 H).
Step 2
A solution of 4-methyl-2H-isoquinolin-l-one (4.8 g) in POCla (50 mL) was refluxed for 3 h. After cooling and concentration, the residue was based with 5 N NaOH and extracted with Q^Ch. The organic layer was washed with brine and dried over MgSCU. After concentration, purification by flash chromatography of Biotage with 5% ethyl acetate in hexanes gave 4.8 g (90%) of the desired product as a solid. 'H NMR (400 MHz, CDC13) 8 ppm 2.59 (s, 3 H), 7.68 (t, 7=7.70 Hz, 1 H), 7.78 (m, 1 H), 7.94 (d, 7=8.31 Hz, 1 H), 8.11 (s, 1 H), 8.35 (d, 7=8.31 Hz, 1 H).
Step 3:
A solution of Boc-Hyp-OH (231 mg) and te/t-BuOK (336 mg) in DMSO (10 mL) was stirred for 0.5 h. To the solution was added l-chloro-4-methyl-isoquinoline (178 mg) and the resulting mixture was stirred for 1 day. The reaction was quenched with 5% citric acid and extracted with ethyl acetate. The organic layer was washed with brine and dried over MgSO4. Concentration gave 350 mg (94%) of the desired product as a solid which was used in the next step without further purification. 'H NMR (400 MHz, CD3OD) 6 ppm 1.39,1.43 (2s, 9 H, rotamers), 2.40 (dd, 7=17.97, 4.52 Hz, 1 H), 2.48 (s, 3 H), 2.68 (m, 1 H), 3.84 (m, 2 H), 4.46 (m, 1 H), 5.71 (s, 1 H), 7.58 (t, 7=7.70 Hz, 1 H), 7.75 (m, 2 H), 7.91 (d, 7=8.31 Hz, 1 H), 8.19 (m, 1 H); MS: (M+Na)+ 396.
Step 4:
A solution of 4-(4-methyl-isoquinolin- l-yloxy)-pyrrolidine-1,2-dicarboxylic acid l-ter*-butyl ester) (74 mg), cyclopropanesulfonic acid (l(/?)-amino-2(S)-vinyl-cyclopropanecarbonyl)-amide hydrochloride (59 mg), PyBOP (114 mg) and i-Pr2NEt (0.2 mL) in CH2Cl2 (2 mL) was stirred for 2 h. Purification by flash chromatograph of Biotage with 5% MeOH in ethyl acetate gave 105 mg (90%) of the desired product. 'H NMR (400 MHz, Methanol-D4) 6 ppm 1.18 (m, 5 H), 1.39 (s, 9 H), 1.87 (dd, 7=8.2,5.3 Hz, 1 H), 2.28 (m, 2 H), 2.54 (m, 4 H), 2.95 (m, 1 H), 3.86 (m, 2 H), 4.40 (dd, 7=9.8,6.9 Hz, 1 H), 5.12 (d, 7=10.5 Hz, 1 H), 5.31 (d, 7=17.6 Hz, 1 H), 5.79 (m, 2 H), 7.60 (t, 7=7.5 Hz, 1 H), 7.78 (m, 2 H), 7.93 (d, 7=8.3 Hz, 1 H), 8.20 (d, 7=8.1 Hz, 1 H); MS: (M+Na)+ 607.
Step 5:
A solution of 2-(l-cyclopropanesuIfonylaminocarbonyl-2-vinyl-cyclopropy]carbamoyI)-4-(4-methyl-isoquinoIin-l-yloxy)-pyrro]idine-l-carboxylic acid tert-butyl ester
(100 mg) and TFA (3 mL) in CHbCb (3 mL) was stirred for 1 h. After concentration, the residue was dissolved in CH2CI2 (2 mL), and Boc-L-terMeucine (40 mg), PyBOP (104 mg) and j-P^NEt (0.2 mL) was added. The mixture was stirred for 1 h. After work-up, purification Prep HPLC gave 60 mg (52%) of the desired product compound 250 as a solid. 'H NMR (400 MHz, CD3OD) 5 ppm 1.04 (m, 12H), 1.26 (m, 10 H), 1.44 (dd, 7=9.5, 5.1 Hz, 1 H), 1.88 (dd, 7=8.1, 5.4 Hz, 1 H), 2.26 (m, 2 H), 2,49 (s, 3 H), 2.62 (dd, 7=13.7,7.1 Hz, 1 H), 2.94 (m, 1 H), 4.06 (dd, 7=12.0,3.4 Hz, 1 H), 4.25 (m, 1 H), 4.45 (d, 7=11.3 Hz, 1 H), 4.53 (dd, 7=10.3,6.6 Hz, 1 H), 5.12 (d, 7=10.0 Hz, 1 H), 5.29 (d, 7=17.1 Hz, 1 H), 5.77 (m, 2 H), 6.63 (d, 7=8.6 Hz, 1 H), 7.53 (t, 7=7.8 Hz, 1 H), 7.76 (t, 7=8.1 Hz, 1 H), 7.80 (s, 1 H), 7.91 (d, 7=8.1 Hz, 1 H), 8.22 (d, 7=8.3 Hz, 1 H); MS: (M+Na)+ 720.
Example 251: Pre
Compound 251 was prepared by following Scheme 1 of Example 250 except that 3-methoxy-3-phenyl-acrylic acid was used in place of 3-phenyl-but-2-enoic acid in step 1.
Step 1:
Modifications: 15 g 3-methoxy-3-phenyl-acrylic acid used, 250 mg product obtained
(2% yield).
Product:
'H NMR (400 MHz, CD3COCD3) 6 ppm 3.85 (s, 3 H), 6.96 (s, 1 H), 7.54 (m, 1 H), 7.71 (m, 1 H), 7.86 (d, 7=8.07 Hz, 1 H), 8.31 (d; 7=8.07 Hz, 1 H).
Step 2:
Modifications: 200 mg 4-methoxy-2//-isoquinolin-l-one used, 150 mg product
obtained (68% yield).
Product:
'H NMR (400 MHz, CDC13) 6 ppm 4.05 (s, 2 H), 7.71 (m, 1 H), 7.72 (m, 2 H), 7.80 (s, 1 H), 8.23 (dd, 7=18.71, 7.70 Hz, 2 H).
Step 3:
Modifications: 122 mg l-chloro-4-methoxy-isoquinoline used, 218 mg product
obtained (89% yield).
Product:
MS:(M+Na)+411.
Step 4:
Modifications: 194 mg 4-(4-methoxy-isoquinolin-l-yloxy)-pyrrolidine-l,2-
dicarboxylic acid 1-tert-butyJ ester used, 298 mg product obtained (99% yield).
Product:
'H NMR (400 MHz, CD3OD) 6 ppm 1.17 (m, 5 H), 1.42 (s, 9 H), 1.87 (dd, 7=8.2, 5.5 Hz, 1 H), 2.27 (m, 2 H), 2.54 (dd, 7=13.3, 6.2 Hz, 1 H), 2.95 (m, 1 H), 3.85 (m, 2 H), 4.00 (s, 3 H), 4.39 (dd, 7=9.8, 6.9 Hz, 1 H), 5.12 (d, 7=10.5 Hz, 1 H), 5.31 (d, 7=17.1 Hz, 1 H), 5.76 (m, 2 H), 7.52 (s, 1 H), 7.62 (t, 7=7.6 Hz, 1 H), 7.74 (t, 7=7.2 Hz, 1 H), 8.12 (t, 7=8.3 Hz, 2 H).
Step 5:
Modifications: 190 mg 2-(l-cyclopropanesuIfonylaminocarbonyl-2-vinyI-
cyclopropyJcarbamoyl)-4-(4-methoxy-isoquinolin-l-ylox
y)-pyrrolidine-l-carboxylic acid tert-butyl ester used, 270 mg product obtained (51%
yield).
Product:
Data: 'H NMR (500 MHz, CD3OD) 8 ppm 1.06 (m, 12 H), 1.26 (m, 10 H), 1.43 (dd, 7=8.6,4.6 Hz, 1 H), 1.88 (dd, 7=7.9, 5.5 Hz, 1 H), 2.24 (m, 2 H), 2.61 (dd, 7=13.6, 6.9 Hz, 1 H), 2.94 (m, 1 H), 4.00 (s, 3 H), 4.06 (dd, 7=11.3, 3.1 Hz, 1 H), 4.25 (d, 7=8.9 Hz, 1 H), 4.43 (d, 7=11.3 Hz, 1 H), 4.52 (m, 1 H), 5.12 (d, 7=10.1 Hz, 1 H), 5.29 (d, 7=17.1 Hz, 1 H), 5.75 (m, 2 H), 6.60 (d, 7=8.6 Hz, 1 H), 7.55 (m, 2 H), 7.71 (t, 7=7.3 Hz, 1 H), 8.09 (d, 7=8.2 Hz, 1 H), 8.14 (d, 7=8.2 Hz, 1 H); MS: (M+Na)+ 736.
Example 252: Preparation of Compound 252
Compound 252 was prepared by following Scheme 1 of Example 250 except 2-methylcinnamic acid was used in place of 3-phenyl-but-2-enoic acid in step 1.
Step 1:
Modifications: 20 g 2-methylcinnamic acid used, 14.3 g product obtained (72%
yield)
Product:
ata: JH NMR (400 MHz, CD3OD) 5 ppm 2.54 (s, 1 H), 6.69 (d, 7=7.3 Hz, 1H), 7.23 (d, .7=7.3 Hz, 1 H), 7.39 (t, 7=7.8 Hz, 1 H), 7.50 (d, 7=7.1 Hz, 1 H), 8.30 (d, 7=8.1 Hz, 1 H), 11.62 (s, 1 H); MS: (M+H)+160.
Step 2:
Modifications: 14.4 g 5-methyl-2#-isoquinolin-l-one used, 10.6 g product obtained
(66% yield).
Product:
Data: 'H NMR (400 MHz, CDC13) 8 ppm 2.67 (s, 3 H), 7.55 (m, 2 H), 7.70 (dd, 7=5.9,1.0 Hz, 1 H), 8.19 (m, 1 H), 8.28 (d, 7=5.9 Hz, 1 H); MS: (M+H)+ 178.
Step 3:
Modifications: 533 mg l-chloro-5-methyl-isoquinoline used, 1116 mg product
obtained (100% yield).
Product:
Step 4:
Modifications: 372 mg 4-(5-methyl-isoquinolin-l-yloxy)-pyrrolidine-l,2-
dicarboxylic acid 1-te/t-butyl ester used, 551 mg product obtained (94% yield).
Product:
Data:MS:(M+Na)+607.
Step 5:
Modifications: 551 mg 2-(l-cyclopropanesulfonylaminocarbonyl-2-viny]-
cyclopropylcarbamoyl)-4-(5-methyl-isoquinolin-l-yloxy)-pyrrolidine-l-carboxylic
acid fgrt-butyl ester used, 274 mg product obtained (44% yield).
Product:
Data: 'H NMR (400 MHz, CD3OD) 8 ppm 1.00 (m, 12 H.) 1.23 (m, 10 H), 1.44 (m, 1 H), 1.87 (dd, 7=8.1,5.4 Hz, 1 H), 2.26 (m, 2 H), 2.62 (m, 4 H), 2.94 (m, 1 H), 4.07 (dd, 7=11.9,3.3 Hz, 1 H), 4.25 (d, 7=9.5 Hz, 1 H), 4.46 (d, 7=11.5 Hz, 1 H), 4.53 (dd, 7=10.3, 7.1 Hz, 1 H), 5.12 (d, 7=10.5 Hz, 1 H), 5.29 (d, 7=16.9 Hz, 1 H), 5.75 (m, 1 H), 5.86 (s, 1 H), 6.62 (d, 7=9.3 Hz, 1 H), 7.39 (t, 7=7.7 Hz, 1 H), 7.44 (d, 7=5.9 Hz,
1 H), 7.53 (d, 7=7.1 Hz, 1 H), 8.00 (d, 7=6.1 Hz, 1 H), 8.06 (d, 7=8.3 Hz, 1H); MS: (M+H)+698.
Compound 253 was prepared by following Scheme 1 of Example 250 except 2-methoxy cinnamic acid was used in place of 3-phenyl-but-2-enoic acid in step 1.
Modifications: 10 g 2-methoxy cinnamic acid used, 5.3 g product obtained (53%
yield).
Product:
Data: 'H NMR (400 MHz, CD3OD) 8 ppm 3.95 (s, 3 H), 6.94 (d, 7=7.3 Hz, 1 H), 7.08 (d, 7=8.1 Hz, 1 H), 7.14 (d, 7=7.3 Hz, 1 H), 7.43 (t, 7=8.1 Hz, 1 H), 7.99 (d, 7=8.1 Hz, 1 H), 10.92 (s, 1 H); MS: (M+H)* 176.
Step 2:
Modifications: 5.3 g 5-methoxy-2#-isoquinolin-l-one used, 5.38 g product obtained
(92% yield).
Product:
Data: !H NMR (400 MHz, CDC13) 8 ppm 4.01 (s, 3 H), 7.04 (d, 7=7.8 Hz, 1 H), 7.57 (t, 7=8.1 Hz, 1 H), 7.88 (d, 7=8.6 Hz, 1 H), 7.97 (d, 7=5.9 Hz, 1 H), 8.25 (d, 7=5.9 Hz, 1 H); MS: (M+H)+194.
Step 3:
Modifications: 581 mg l-chIoro-5-methoxy-isoquinoline used, 1163 mg product
obtained (100% yield).
Product:
Data: MS: (M+H)+ 389.
Step 4:
Modifications: 117 mg 4-(5-methoxy-isoquinolin-l-yloxy)-pyrrolidine-l,2-
dicarboxylic acid 1-terf-butyl ester used, 180 mg product obtained (100% yield).
Product:
Data: MS: (M+H)+ 601.
Step 5:
Modifications: 177 mg2-(l-cyclopropanesulfonylaminocarbonyI-2-vinyl-
cyclopropylcarbamoyl)-4-(5-methoxy-isoquinolin-l-yloxy)-pyrrolidine-l-carboxylic
acid terr-butyl ester used, 63 mg product obtained (44% yield).
Product:
'w MMR wnnx/mv rn,on^nnm i on
Example 254: Preparation of Compound 254
Compound 254 was prepared by following Scheme 1 of Example 250 except that 2-chlorocinnamic acid was used in place of 3-phenyl-but-2-enoic acid in step 1.
Step 1:
Modifications: 25 g 2-chIorocinnamic acid used, 14.6 g product obtained (59%
yield).
Product:
Data: 'H NMR (400 MHz, CD3OD ) 8 ppm 7.22 (d, 7=7.3 Hz, 1 H), 7.42 (t, 7=7.8 Hz, 1 H), 7.73 (d, 7=7.8 Hz, 1 H), 8.34 (d, 7=8.1 Hz, 1 H), 10.61 (s, 1 H); MS: + 180.
Step 2:
Modifications: 14.2 g 5-chloro-2//-isoquinolin-l-one used, 8.28 g product obtained
(53% yield).:
Data: 'HNMR (400 MHz, CDC13) 8 ppm 7.60 (dd, 7=8. 6, 7.6 Hz, 1 H), 7.83 (m, 1 H), 8.00 (d, 7=5.9 Hz, 1 H), 8.29 (dt, 7=8.9, 1.0 Hz, 1 H), 8.38 (d, 7=5.9 Hz, 1 H); MS: (M+H)+ 198.
Step 3:
Modifications: 594 mg 1,5-dichloro-isoquinoline used, 1 174 mg product obtained
(100% yield).
Product:
Data:MS:(M+H)! W5.
Step 4:
Modifications: 118 mg 4-(5-chloro-isoquinolin-l-yloxy)-pyrrolidine-l,2-dicarboxylic
acid 1-te/f-butyl ester used, 154 mg product obtained (85% yield).
Product:
Step 5:
Modifications: 150 mg 2-(l-cyclopropanesulfonylaminocarbonyl-2-vinyl-
cyclopropylcarbamoyl)-4-(5-chloro-isoquinolin-l-yloxy)-pyrrolidine-l-carboxylic
acid /e/f-butyl ester used, 91 mg product obtained (51% yield).
Product:
Data: 'H NMR (400 MHz, CD3OD) 5 ppm 0.97 (m, 12 H), 1.17 (m, 10 H), 1.38 (dd, 7=9.4, 5.3 Hz, 1 H), 1.82 (dd, 7=8.0, 5.5 Hz, 1 H), 2.21 (m, 2 H), 2.58 (dd, 7=13.8, 7.0 Hz, 1 H), 2.88 (m, 1 H), 4.01 (dd, 7=11.9, 2.8Hz, 1 H, 4.16 (d, 7=9.3 Hz, 1 H), 4.47 (m, 2 H), 5.06 (d, 7=10.3 Hz, 1 H), 5.24 (d, 7=16.9 Hz, 1 H), 5.70 (m, 1 H), 5.82 (s, 1 H), 6.52 (d, 7=9.3 Hz, 1 H), 7.42 (t, 7=8.0 Hz, 1 H), 7.57 (d, 7=6.1 Hz, 1 H), 7.76 (d, 7=7.6 Hz, 1 H), 8.05 (d, 7=6.1 Hz, 1 H), 8.13 (d, 7=8.3 Hz, 1 H); MS: (M+H)+718.
Compound 255 was prepared by following Scheme 1 of Example 250 except that 2-fluorocinnamic acid was used in place of 3-phenyl-but-2-enoic acid in step 1.
Step 1:
Modifications: 16.6 g2-fluorocinnamic acid used, 8.55 g product obtained (51%
yield).
Data: 'H NMR (400 MHz, CD3COCD3) 8 ppm 6.62 (d, 7=7.3 Hz, 1 H), 7.32 (d, 7=7.3 Hz, 1 H), 7.47 (m, 2 H), 8.09 (m, 1 H).
Step 2:
Moditications: 8.4 g D-nuoro-^rt-isoquinonn-i-one used, /.D g proauci oouunea
(80% yield).
Product:
Data: !H NMR (400 MHz, CDC13) 6 ppm 7.43 (ddd, 7=9.7,7.8,0.9 Hz, 1 H), 7.62 (td, 7=8.2, 5.4 Hz, 1 H), 7.84 (d, 7=5.6 Hz, 1 H), 8.14 (d, 7=8.6 Hz, 1 H), 8.33 (d, 7=5.9 Hz, 1 H); MS: (M+H)+ 182.
Step 3:
Modifications: 203 mg l-chloro-5-fluoro-isoquinoIine used, 384 mg product obtained
(90% yield).
Data: !H NMR (400 MHz, CD3SOCD3) 6 ppm 1.34, 1.36 (2s, 9 H, rotamers), 2.35 (m, 1 H), 2.61 (m, 1 H), 3.65 (d, 7=12.23 Hz, 1 H), 3.80 (m, 1 H), 4.35 (m, 1 H), 5.70 (s, 1 H), 7.48 (d, 7=6.11 Hz, 1 H), 7.63 (m, 2 H), 7.99 (m, 1 H), 8.10 (d, 7=5.87 Hz, 1 H);MS:(M+Na)*399.
Step 4:
Modifications: 76 mg4-(5-fluoro-isoquinolin-l-yloxy)-pyrrolidine-l,2-dicarboxylic
acid 1-terr-butyl ester used, 116 mg product obtained (99% yield).
Product:
Step 5:
Modifications: 110 mg 2-(l-cyclopropanesulfonylaminocarbonyl-2-vinyl-
cyclopropyIcarbamoyl)-4-(5-fIuoro-isoquinoIin-l-yloxy)-pyrrolidine-l-carboxylic
acid te/t-butyl ester used, 39 mg product obtained (30% yield).
Product:
Data: 'H NMR (400 MHz, CD3OD) 8 ppm 1.05 (m, 12 H), 1.25 (m, 10 H), 1.44 (dd, 7=9.5, 5.4 Hz, 1 H), 1.88 (dd, 7=8.1, 5.4 Hz, 1 H), 2.28 (m, 2 H), 2.63 (dd, 7=13.8, 7.0 Hz, 1 H), 2.94 (m, 1 H), 4.07 (dd, 7=11.9, 3.1 Hz, 1 H), 4.23 (d, 7=9.3 Hz, 1 H), 4.52 (m, 2 H), 5.12 (dd, 7=10.3, 1.5 Hz, 1 H), 5.29 (d, 7=17.4 Hz, 1 H), 5.75 (m, 1 H), 5.89 (s, 1 H), 6.59 (d, 7=9.1 Hz, 1 H), 7.47 (m, 3 H), 8.02 (d, 7=8.1 Hz, 1 H), 8.06 (d, 7=6.1 Hz, 1 H); MS: (M+Na)+ 724.
Compound 256 was prepared by following Scheme 1 of Example 250 except 2-difluormethoxycinnamic acid was used in place of 3-phenyl-but-2-enoic acid in step 1.
Step 1:
Modifications: 10.7 g 2-difluormethoxycinnamic acid used, 2 g product obtained
(18% yield).
Product:
Data: *H NMR (400 MHz, CD3SOCD3) 6 ppm 6.06 (m, 2 H), 6.42 (m, 2 H), 6.71 (s, 2 H), 7.35 (s, 1 H); MS: (M+H)+ 212.
Step 2:
Modifications: 300 mg 5-difluoromethoxy-2#-isoquinolin-l-one used, 300 mg
product obtained (92% yield).
Product:
Data: 'H NMR (400 MHz, CDC13) 8 ppm 6.70 (t, 7=72.87 Hz, 1 H), 7.48 (m, 1 H), 7.64 (m, 1 H), 7.92 (d, 7=5.87 Hz, 1 H), 8.21 (d, 7=8.56 Hz, 1 H), 8.35 (d, 7=5.62 Hz, 1H).
Step 3:
Modifications: 230 mg l-chIoro-5-difluoromethoxy-isoquinoline used, 360 mg
product obtained (96% yield).
Product:
Modifications: 37 mg 4-(5-hydroxy-isoquinolin-l-yloxy)-pyrrolidine-l,2-
dicarboxylic acid 1-tert-butyl ester used, 57 mg product obtained (99% yield).
Product:
Step 5:
Modifications: 57 mg 2-(l-cyclopropanesulfonylaminocarbonyl-2-vinyl-
cyclopropylcarbamoyl)-4-(5-hydroxy-isoquinoIin-l-yloxy)-pyrrolidine-l-carboxylic
acid tert-buty] estemsed, 10 mg product obtained (15% yield).
Product:
Data: 1H NMR (400 MHz, CD3OD) 6 ppm 0.93 (m, 4 H), 1.13 (s, 9 H), 1.31 (m, 1 H), 1.49 (s, 9H), 1.89 (dd, 7=7.8, 5.4 Hz, 1 H), 2.16 (q, 7=8.8 Hz, 1 H), 2.40 (m, 1 H), 2.81 (m, 1 H), 2.90 (m, 1 H), 3.76 (m, 2 H), 4.30 (m, 1 H), 4.59 (dd, 7=10.2,7.7 Hz, 1 H), 5.07 (dd, 7=10.3,1.7 Hz, 1 H), 5.26 (dd, 7=17.2,1.3 Hz, 1 H), 5.77 (dt, 7=17.2, 9.6 Hz, 1 H), 5.93 (s, 1 H), 7.24 (d, 7=8.6 Hz, 1 H), 7.51 (m, 2 H), 7.63 (t, 7=8.0 Hz, 1 H), 7.98 (d, 7=6.1 Hz, 1 H), 8.24 (d, 7=8.3 Hz, 1 H); MS: (M+H)+ 700.
Example 257: Preparation of Compound 257
Compound 257 was prepared by following Scheme 1 of Example 250 except 4-fluorocinnamic acid was used in place of 3-phenyl-but-2-enoic acid in step 1.
Step 1:
Modifications: 16.6 g 4-fluorocinnamic acid used, 8.2 g product obtained (49%
yield).
Product:
Data: 'H NMR (400 MHz, CD3COCD3) 5 ppm 6.57 (d, 7=7.09 Hz, 1 H), 7.21 (d, 7=7.09 Hz, 1 H), 7.50 (m, 1 H), 7.72 (dd, 7=8.68, 5.26 Hz, 1 H), 7.90 (dd, 7=9.54, 2.93 Hz, 1 H).
Step 2:
Modifications: 8.15 g 7-fluoro-2//-isoquinoIin-l-one used, 7.6 g product obtained
(84% yield).
Product:
Data: 'H NMR (400 MHz, CDC13) 8 ppm 7.52 (td, 7=8.6, 2.6 Hz, 1 H), 7.59 (d, 7=5.6 Hz, 1 H), 7.86 (dd, 7=9.1,5.4 Hz, 1 H), 7.95 (dd, 7=9.5,2.5 Hz, 1 H), 8.26 (d, 7=5.6 Hz, 1 H); MS: (M+H)+ 182.
Step 3:
Modifications: 191 mg l-chloro-7-fluoro-isoquinoline used, 350 mg product obtained
(93% yield).
Product:
Step 4:
Modifications: 75 mg 4-(7-fluoro-isoquinolin-l-yloxy)-pyrroIidine-l,2-dicarboxylic
acid 1-te/t-butyl ester used, 100 mg product obtained (85% yield)
Product:
Data: !H NMR (400 MHz, CD3OD) 8 ppm 1.16 (m, 4 H), 1.41 (m, 10 H), 1.88 (dd, 7=8.1, 5.4 Hz, 1 H), 2.28 (m, 2 H), 2.56 (m, 1 H,) 2.94 (m, 1 H), 3.87 (m, 2 H), 4.41 (dd, 7=9.7,7.0 Hz, 1 H), 5.12 (d, 7=10.8 Hz, 1 H), 5.31 (d, 7=17.1 Hz, 1 H), 5.78 (m, 2 H), 7.36 (d, 7=5.9 Hz, 1 H), 7.54 (m, 1 H), 7.78 (dd, 7=9.3,2.5 Hz, 1 H), 7.90 (dd, 7=9.1, 5.1 Hz, 1 H), 7.96 (d, 7=5.9 Hz, 1 H); MS: (M+Na)+ 611.
Step 5:
Modifications: 95 mg 2-(l-cydopropanesulfonyIarninocarbonyl-2-vinyl-
cyclopropylcarbamoyl)-4-(7-fluoro-isoquinolin-l-yloxy)-pyrrolidine-l-carboxylic
acid tert-butyl ester used, 55 mg product obtained (44% yield).
Product:
Data: 'H NMR (400 MHz, CD3OD) 5 ppm 1.05 (m, 12 H), 1.22 (m, 10 H), 1.44 (dd, 7=9.3,5.4 Hz, 1 H), 1.88 (dd, 7=8.2, 5.5 Hz, 1 H), 2.27 (m, 2 H), 2.63 (dd, 7=13.8, 7.0 Hz, 1 H), 2.94 (m, 1 H), 4.07 (dd, 7=11.5,3.2 Hz, 1 H), 4.22 (d, 7=9.5 Hz, 1 H), 4.47 (d, 7=11.7 Hz, 1 H), 4.55 (dd, 7=10.6,7.5 Hz, 1 H), 5.12 (d, 7=10.3 Hz, 1 H), 5.29 (d, 7=17.1 Hz, 1 H), 5.75 (m, 1 H), 5.87 (s, 1 H), 6.61 (d, 7=9.5 Hz, 1 H), 7.36
(d, 7=5.9 Hz, 1 H), 7.52 (td, 7=8.9,2.5 Hz, 1 H), 7.79 (dd, 7=9.4, 2.6 Hz, 1 H), 7.88 (dd, 7=8.7,5.5 Hz, 1 H), 7.96 (d, 7=5.9 Hz, 1 H); MS: (M+Na)+ 724.
Example 258: Preparation of Compound 258
Compound 258
Compound 258 was prepared by following Scheme 1 of Example 250 except that 4-chlorocinnamic acid was used in place of 3-phenyl-but-2-enoic acid in step 1.
Data: 'H NMR (400 MHz, CD3SOCD3) 5 ppm 6.58 (d, 7=7.1 Hz, 1 H), 7.20 (dd, 7=7.1,5.9 Hz, 1 H), 7.72 (m, 2 H), 8.10 (m, 1 H).
Step 2:
Modifications: 3.5 g 7-chIoro-2//-isoquinolin-J-one used, 2.8 g product obtained
(72% yield).
Product:
Data: *H NMR (500 MHz, CDC13) 5 ppm 7.59 (d, 7=5.5 Hz, 1 H), 7.69 (dd, 7=8.9, 2.1 Hz, 1 H), 7.80 (d, 7=8.6 Hz, 1 H), 8.29 (d, 7=5.5 Hz, 1 H), 8.34 (s, 1 H); MS: (M+H)+ 198.
Step 3:
Modifications: 208 mgl,7-dichloro-isoquinoline used, 350 mg product obtained
(89% yield).
Product:
Data: MS: (M+Na)+ 415.
Step 4:
Modifications: 79 mg4-(7-chloro-isoquinolin-l-yloxy)-pyrrolidine-l,2-dicarboxylic
acid I tert-buty] ester used, 119 mg product obtained (99% yield).
Product:
Data: 'H NMR (400 MHz, CD3OD) 6 ppm 1.17 (m, 4 H), 1.43 (m, 10 H), 1.88 (dd, 7=8.31 5.4 Hz, 1 H), 2.29 (m, 2 H), 2.57 (dd, 7=13.7,6.9 Hz, 1 H), 2.95 (m, 1 H), 3.87 (m, 2 H), 4.42 (dd, 7=9.9,6.9 Hz, 1 H), 5.13 (d, 7=10.3 Hz, 1 H), 5.31 (dd, 7=17.1, 1.2 Hz, 1 H), 5.78 (m, 2 H), 7.35 (d, 7=5.9 Hz, 1 H), 7.69 (dd, 7=8.7, 2.1 Hz, 1 H), 7.84 (d, 7=8.8 Hz, 1 H), 7.99 (d, 7=5.9 Hz, 1 H), 8.12 (d, 7=1.7 Hz, 1 H); MS: (M+Na)+ 627.
Step 5:
Modifications: 115 mg 2-(l-cyclopropanesuIfonylaminocarbonyl-2-vinyl-
cyclopropylcarbamoyl)-4-(7-chloro-isoquinolin-1 -yloxy)-pyrrolidine-1 -carboxylic
acid tert-butyl ester used, 36 mg product obtained (25% yield).
Product:
Data: MS: (M+Na)+ 740.
Example 259: Preparation of Compound 259
Compound 259 was prepared by following Scheme 1 of Example 250 except that 4-methylcinnamic acid was used in place of 3-phenyl-but-2-enoic acid in step 1.
Step 1:
Modifications: 25 g 4-methylcinnamic acid used, 15.3 g product obtained (62%
yield).
Product:
Data: 1H NMR (400 MHz, CD3OD) 5 ppm 2.50 (s, 3 H), 6.54 (d, 7=7.1 Hz, 1 H), 7.13 (d, 7=7.1 Hz, 1 H), 7.49 (m, 2 H), 8.22 (s, 1 H), 11.49 (s, 1 H); MS: (M+H)+ 160.
Step 2:
Modifications: 15.3 g 7-methyl-2//-isoquinolin-l-one used, 5.15 g product obtained
(30% yield).
Product:
Data: !H NMR (400 MHz, CDCI3) 8 ppm 2.58 (s, 3 H), 7.56 (m, 2 H), 7.73 (d, 7=8.3 Hz, 1 H), 8.09 (s, 1 H), 8.20 (d, 7=5.6 Hz, 1 H); MS: (M+H)+ 178.
Step 3:
Modifications: 205 mg l-chloro-7-methyI-isoquinoline used, 350 mg product
obtained (89 % yield).
Product:
Data: MS: (M+H)+ 373.
Step 4:
Modifications: 75 mg 4-(7-methyl-isoquinolin-l-yloxy)-pyrrolidine-l,2-dicarboxylic
acid i-tert-butyl ester used, 107 mg product obtained ( 95% yield).
Product: Data: MS: (M+Na)+ 607.
Step 5:
Modifications: 107 mg 2-(l-cyclopropanesulfonylaminocarbonyl-2-vinyl-
cyclopropylcarbamoyl)-4-(7-methyl-isoquinolin-l-yloxy)-pyrrolidine-l-carboxylic
acid tert-butyl ester used, 53 mg product obtained (41% yield).
Product:
(Figure Removed)
Data: 'H NMR (400 MHz, CD3OD) 8 ppm 1.02 (m, 12 H), 1.18 (s, 9 H), 1.24 (m, 1 H), 1.45 (dd, 7=9.4,5.5 Hz, 1 H), 1.88 (dd, 7=8.2, 5.5 Hz, 1 H), 2.28 (m, 2 H), 2.50 (s, 3 H), 2.61 (dd, 7=13.8,6.7 Hz, .1 H), 3.34 (s, 1 H), 4.09 (dd, 7=11.7, 3.2 Hz, 1 H), 4.23 (s, 1 H), 4.42 (d, 7=12.0 Hz, 1 H), 4.57 (dd, 7=10.0, 7.1 Hz, 1 H), 5.12 (dd, 7=10.3,1.5 Hz, 1 H), 5.30 (d, 7=17.1 Hz, 1 H), 5.76 (m, 1 H), 5.87 (s, 1 H), 7.28 (d, 7=5.9 Hz, 1 H), 7.55 (d, 7=8.3 Hz, 1 H), 7.71 (d, 7=8.3 Hz, 1 H), 7.89 (d, 7=5.9 Hz, 1 H), 7.93 (s, 1 H); MS: (M+H)+ 698.
Example 260: Preparation of Compound 260
Compound 260 was prepared by following Scheme 1 of Example 250 except that 4-methoxycinnamic acid was used in place of 3-phenyl-but-2-enoic acid in step 1.
Step 1:
Modifications: 33 g using 4-methoxycinnamic acid used, 7 g product obtained (33%
yield).
Product:
Data: 1H NMR (500 MHz, CD3COCD3) 8 ppm 3.90 (s, 3 H), 6.49 (d, 7=7.0 Hz, 1 H), 7.10 (d, 7=7.3 Hz, 1 H), 7.28 (dd, 7=8.6, 2.8 Hz, 1 H), 7.57 (d, 7=8.9 Hz, 1 H), 7.71 (d, 7=2.8 Hz, 1 H).
Step 2:
Modifications: 4 g 7-methoxy-2//-isoquinolin-l-one used, 3 g product obtained
(68 % yield).
Data: 'H NMR (400 MHz, CDC13) 6 ppm 3.98 (s, 3 H), 7.38 (dd, 7=8.9,2.6 Hz, 1 H), 7.52 (m, 2 H), 7.73 (d, 7=8.8 Hz, 1 H), 8.16 (d, 7=5.4 Hz, 1 H).
Step 3:
Modifications: 533 mg l-chloro-7-methoxy-isoquinoline used, 1115 mg product
obtained (100 % yield).
Product:
Step 4:
Modifications: 78 mg4-(7-methoxy-isoquinolin-l-y1oxy)-pyrrolidine-l,2-
dicarboxylic acid 1-terf-butyl ester used, 108 mg product obtained (99 % yield).
Product:
Data: 'H NMR (400 MHz, CD3OD) 6 ppm 1.17 (m, 4H), 1.40 (m, 1 H), 1.43 (s, 9 H), 1.85 (dd, 7=8.1, 5.4 Hz, 1 H), 2.21 (m, 2 H), 2.51 (dd, 7=13.7,6.6 Hz, 1 H), 2.93 (s, 1 H), 3.80 (m, 2 H), 3.94 (s, 3 H), 4.41 (dd, 7=10.0,6.6 Hz, 1 H), 4.57 (s, 1 H), 5.11 (d, 7=11.3 Hz, 1 H), 5.29 (d, 7=17.1 Hz, 1 H), 5.77 (m, 2 H), 7.01 (d, 7=7.8 Hz, 1 H), 7.22 (d, 7=5.6 Hz, 1 H), 7.32 (d, 7=8.1 Hz, 1 H), 7.58 (t, 7=8.0 Hz, 1 H), 7.87 (d, 7=5.9 Hz, 1 H); MS: (M+H)+ 601.
Step 5:
Modifications: 100 mg 2-(l-cyclopropanesuIfonyIaminocarbonyl-2-vinyl-
cyclopropylcarbamoyl)-4-(7-methoxy-isoquinolin-l-yloxy)-pyrrolidine-l-carboxylic
acid tert-butyl ester used, 30 mg product obtained (25% yield).
Product:
Data: !H NMR (400 MHz, CD3SOCD3) 6 ppm 0.90 (m, 2 H), 0.95 (s, 9 H), 1.05 (m, 1 H), 1.12 (s, 9 H), 1.35 (m, 2H), 1.70 (m, 1 H), 2.18 (m, 1 H), 2.92 (m, 1 H), 3.86 (s, 3 H), 4.00 (m, 2 H), 4.27 (d, 7=12.0 Hz, 1 H), 4.45 (t, 7=8.6 Hz, 1 H), 5.09 (d, 7=10.8 Hz, 1 H), 5.23 (d, 7=16.9 Hz, 1 H), 5.62 (m, 1 H), 5.79 (s, 1 H), 6.55 (d, 7=8.1 Hz, 1 H), 7.35 (d, 7=6.6 Hz, 1 H), 7.39 (d, 7=2.5 Hz, 1 H), 7.43 (dd, 7=8.8,2.2 Hz, 1 H), 7.84 (d, 7=8.8 Hz, 1 H), 7.88 (d, 7=5.9 Hz, 1 H); MS: (M+H)+ 714.
Example 261 and 262: Preparation of Compounds 261 and 262
Compounds 261 and 262 were prepared by following Scheme 1 of Example 250 except that 4-fluoro-3-methoxycinnamic acid was used in place of 3-phenyl-but-2-enoic acid in step 1.
Step 1:
Modifications: 19.6 g 4-fluoro-3-methoxycinnamic acid used, 9.5 g product obtained
(48% yield).
Product:Me(X
Data: 'H NMR (400 MHz, CD3COCD3) 6 ppm 4.00 (s, 1 H), 6.49 (d, 7=7.34 Hz, 1 H), 7.19 (d, 7=7.09 Hz, 1 H), 7.29 (d, 7=8.07 Hz, 1 H), 7.86 (d, 7=11.74 Hz, 1 H).
Step 2:
Modifications: 9 g 7-fluoro-6-methoxy-2flr-isoquinoIin-l-one used, 7 g product
obtained (70% yield).
Product:
Data: 'H NMR (400 MHz, CDC13) 8 ppm 4.04 (s, 3 H), 7.17 (d, 7=8.07 Hz, 1 H), 7.48 (d, 7=5.62 Hz, 1 H), 7.94 (d, 7=11.49 Hz, 1 H), 8.20 (d, 7=5.62 Hz, 1 H).
Step 3:
Modifications: 222 mg l-chloro-7-fluoro-6-methoxy-isoquinoline used, 406 mg
products obtained.
Products:
Modifications: 400 mg mixture of 4-(7-fluoro-6-methoxy-isoquinolin-l-yloxy)-
pyrrolidine-l,2-dicarboxylic acid l-tert-buty\ ester and 4-(l-chloro-6-methoxy-
isoquinolin-7-yloxy)-pyrrolidine-l,2-dicarboxylic acid 1-tert-butyl ester used, 700
mg products obtained.
Product:
Step 5:
Modifications: 700 mg mixture of 2-(l-cyclopropanesulfonylaminocarbonyl-2-vinyl-
cyclopropylcarbamoyl)-4-(7-fluoro-6-methoxy-isoquinolin-l-yloxy)-pyrrolidine-l-
carboxylic acid tert-buty\ ester and4-(l-chloro-6-methoxy-isoquinolin-7-yloxy)-2-
(l-cycIopropanesulfonylaminocarbonyl-2-vinyl-cyclopropy
lcarbamoyl)-pyrrolidine-l-carboxylic acid tert-butyl ester used, 79 mg of compound
261 and 80 mg compound 262 obtained.
Product:
Data of compound 261: 'H NMR (400 MHz, CD3OD) S ppm 1.07 (m, 12 H), 1.25 (m, 10 H), 1.44 (m, 1 H), 1.88 (dd, 7=8.1, 5.6 Hz, 1 H), 2.25 (m, 2 H), 2.60 (dd, 7=13.7, 6.9 Hz, 1 H), 2.94 (m, 1 H), 4.02 (m, 4 H), 4.22 (s, 1 H), 4.43 (d, 7=12.2 Hz, 1 H), 4.53 (dd, 7=10.3, 6.6 Hz, 1 H), 5.12 (d, 7=10.5 Hz, 1 H), 5.30 (d, 7=16.6 Hz, 1 H), 5.75 (m, 1 H), 5.84 (s, 1 H), 7.28 (d, 7=5.9 Hz, 1 H), 7.37 (d, 7=8.1 Hz, 1 H), 7.75 (d, 7=1 1.7 Hz, 1 H), 7.91 (d, 7=5.9 Hz, 1 H); MS: (M+Na)+ 754. Data of compound 262: 'H NMR (400 MHz, CD3OD) 6 ppm 1.07 (m, 12 H), 1.25
7=8.72 Hz, 2 H), 2.57 (dd, 7=13.82,7.21 Hz, 1 H), 2.94 (m, 1 H), 3.97 (d, 7=5.14 Hz, 3 H), 4.09 (m, 7=11.00 Hz, 1 H), 4.24 (s, 1 H), 4.32 (m, 1 H), 4.50 (m, 7=16.87 Hz, 1 H), 5.12 (dd, 7=10.52,1.71 Hz, 1 H), 5.30 (dd, 7=17.12,1.47 Hz, 1 H), 5.38 (s, 1 H), 5.76 (m, 1 H), 7.39 (s, 1 H), 7.63 (s, 1 H), 7.66 (d, 7=5.87 Hz, 1 H), 8.07 (d, 7=5.62 Hz,lH);MS:(M+H)+732.
Compound 263
Example 263: Preparation of Compound 263
Compound 263 was prepared by following Scheme 1 of Example 250 except stepl and step2.
Step 3:
Modifications: 176 mg l-chloro-8-methyl-isoquinoline used, 370 mg product
obtained (lOOmg % yield).
Product:
Step 4:
Modifications: 149 mg 8-methyl-isoquinolin-l-yloxy)-pyrrolidine-l,2-dicarboxylic
acid 1-/erf-butyl ester used, 230 mg product obtained (99% yield)
Product:
Data: *H NMR (400 MHz, CD3OD) 8 ppm 1.13 (m, 4 H), 1.42 (m, 10 H), 1.87 (dd, .7=8.2, 5.3 Hz, 1 H), 2.25 (m, 2 H), 2.58 (dd, 7=13.9,6.9 Hz, 1 H), 2.83 (s, 3 H) ,2.96 (m, 1 H), 3.85 (m, 2 H), 4.38 (dd, 7=10.2,6.7 Hz, 1 H), 5.12 (dd, 7=10.4,1.6 Hz, 1 H), 5.30 (dd, 7=17.1,1.2 Hz, 1 H), 5.76 (m, 2 H), 7.28 (d, 7=5.9 Hz, 1 H), 7.36 (d, 7=6.9 Hz, 1 H), 7.53 (t, 7=7.7 Hz, 1 H), 7.62 (m, 1 H), 7.88 (d, 7=5.6 Hz, 1 H); MS: (M+Na)+ 607.
Step 5:
Modifications: 220 mg 2-(l-cyclopropanesulfonylaminocarbonyl-2-vinyl-
cyclopropylcarbamoyl)-4-(8-methyl-isoquinolin-l-yloxy)-pyrrolidine-l-carboxylic
acid tert-butyl ester used, 90 mg product obtained ( 35% yield).
Product:
Data: 'H NMR (400 MHz, CD3OD) 5 ppm 1.05 (m, 12 H), 1.24 (m, 10 H), 1.44 (dd, 7=9.3, 5.4 Hz, 1 H), 1.87 (dd, 7=8.1,5.4 Hz, 1 H), 2.25 (m, 2 H), 2.60 (dd, 7=13.9, 7.3 Hz, 1 H), 2.77 (s, 3 H), 2.94 (m, 1 H), 4.04 (dd, 7=11.9,3.1 Hz, 1 H), 4.27 (d,
7=10.3 Hz, 1 H), 5.28 (d, 7=17.1 Hz, 1 H), 5.75 (m, 1 H), 5.95 (s, 1 H), 6.63 (d, 7=9.1 Hz, 1 H), 7.28 (m, 2 H), 7.50 (t, 7=7.7 Hz, 1 H), 7.60 (d, 7=7.8 Hz, 1 H), 7.89 (d, 7=5.6 Hz, 1 H); MS: (M+Na)* 720.
Compound 264 was prepared by following Scheme 1 of Example 250 except step 1 and step2.
Step 3:
Modifications: 203 mg l-chloro-8-methoxy-isoquinoline used, 340 mg product
obtained (85% yield).
Product:
Boc
Data: 'H NMR (400 MHz, CD3SOCD3) 5 ppm 1.34, 1.36 (2s, 9 H, rotamers), 2.26 (m, 1 H), 2.49 (m, IH), 3.67 (m, 2 H), 3.86 (s, 3 H), 4.31 (m, 1 H), 5.67 (br s, 1 H), 7.04 (d, 7=7.8 Hz, 1 H), 7.30 (d, 7=5.9 Hz, 1 H), 7.38 (d, 7=8.1 Hz, 1 H), 7.62 (t, 7=8.0 Hz, 1 H), 7.93 (d, 7=5.6 Hz, 1 H), 12.64 (s, 1 H); MS: (M+Na)* 41 1. Step 4:
Modifications: 78 mg 8-methoxy-isoquinolin-l-yloxy)-pyrrolidine-l,2-dicarboxylic acid 1-tert-buty] ester used, 1 1 5 mg product obtained ( 96% yield). Product:
Step 5:
Modifications: 110 mg 2-(l-cyclopropanesulfonylaminocarbonyl-2-vinyl-
cyclopropylcarbamoyl)-4-(8-methoxy-isoquinolin-l-yloxy)-pyrrolidine-l-carboxylic
acid terr-butyl esterused, 45 mg product obtained (34% yield).
Product:
Compounds 265 and 266 were prepared by following Scheme 1 of Example 250 except that 3-(2,3-dihydro-benzofuran-7-yl)-acrylic acid was used in place of 3-phenyl-but-2-enoic acid in step 1.
Step 1:
Modifications: 3.8 g 3-(2,3-dihydro-benzofuran-7-yl)-acrylic acid used, 2 g product
obtained (53% yield).
Data: 'H NMR (400 MHz, CD3OD) 5 ppm 3.37 (t, 7=9.05 Hz, 1 H), 4.73 (t, 7=9.05 Hz, 2 H), 6.67 (d, 7=7.09 Hz, 1 H), 7.10 (d, 7=7.09 Hz, 1 H), 7.37 (d, 7=8.07 Hz, 1 H), 7.81 (d, 7=8.07 Hz, 1 H); MS: (M+H)+ 188.
Step 2:
Modifications: 1.87g2,3-dihydro-7//-furo[2,3-f]isoquinolin-6-one used, 1.84g
product obtained (90% yield).
Product:
Data: 'H NMR (400 Hz, CDC13) 5 ppm 3.43 (t, 7=9.05 Hz, 2 H), 4.82 (t, 7=9.05 Hz, 2 H), 7.52 (d, 7=8.56 Hz, 1 H), 7.66 (d, 7=5.62 Hz, 1 H), 7.84 (d, 7=8.31 Hz, 1 H), 8.19 (d, 7=5.62 Hz, 1 H); MS (M+H)+ 206.
Step 3:
Modifications: 206 mg 6-chloro-2,3-dihydro-furo[2,3-f]isoquinoline used, 300 mg
products mixture obtained.
Products:
Modifications: 240 mg step 3 products mixture used, 350 mg products mixture obtained. Products: -O
Step 5:
Modifications: 331 mg step 4 products mixture used, 240 mg of compound 265
and 24 mg of compound 266 obtained.
Products:
Data of compound 265: !H NMR (400 Hz, CD3OD) 5 ppm 0.99 (m, 12 H), 1.16 (m, 10 H), 1.36 (m, 1 H), 1.81 (dd, 7=8.07,5.62 Hz, 1 H), 2.18 (m, 2 H), 2.54 (dd, 7=13.69,6.85 Hz, 1 H), 2.87 (m, 1 H), 3.31 (t, 7=9.05 Hz, 2 H), 4.01 (m, 1 H), 4.18 (s, 1 H), 4.36 (d, 7=11.74 Hz, 1 H), 4.46 (dd, 7=10.15,7.21 Hz, 1 H), 4.70 (m, 2 H), 5.05 (d, 7=10.27 Hz, 1 H), 5.23 (d, 7=16.87 Hz, 1 H), 5.70 (m, 2 H), 7.23 (d, 7=5.87 Hz, 1 H), 7.31 (d, 7=8.31 Hz, 1 H), 7.63 (d, 7=8.31 Hz, 1 H), 7.82 (d, 7=5.87 Hz, 1 H); MS (M+H)* 726.
Data of compound 266: 'H NMR (400 MHz, CD3OD) 5 ppm 1.06 (m, 12 H), 1.24 (m, 10 H), 1.44 (dd, 7=10.03,5.14 Hz, 1 H), 1.88 (dd, 7=7.83, 5.38 Hz, 1 H), 2.27 (m, 2 H), 2.65 (dd, 7=12.96,6.36 Hz, 1 H), 2.94 (m, 1 H), 4.08 (dd, 7=12.35,3.30 Hz, 1 H), 4.25 (s, 1 H), 4.54 (m, 2 H), 5.12 (d, 7=10.27 Hz, 1 H), 5.29 (d, 7=17.12 Hz, 1 H), 5.75 (m, 1 H), 5.91 (s, 1 H), 7.05 (d, 7=1.96 Hz, 1 H), 7.72 (m, 2 H), 8.02 (m, 2 H), 8.11 (d, 7=5.87 Hz, 1 H), 9.19 (s, 1 H); MS: (M+H)+ 724.
Compounds 267 and 268 were prepared by following Scheme 1 of Example 250 except that 3-(2,3-dihydro-benzofuran-4-yl)-acrylic acid was used in place of 3-phenyl-but-2-enoic acid in step 1.
Step 1:
Modifications: 1.14 g 3-(2,3-dihydro-benzofuran-4-yl)-acrylic acid used, 600 mg
product obtained (52% yield).
Product:
Data: 'H NMR (400 MHz, CD3OD) 5 ppm 3.35 (t, 7=8.93 Hz, 2 H), 4.74 (t, 7=8.93 Hz, 2 H), 6.49 (d, 7=7.09 Hz, 1 H), 6.95 (d, 7=8.56 Hz, 1 H), 7.25 (d, 7=7.09 Hz,, 1 H), 8.13 (d, 7=8.80 Hz, 1 H); MS (M+H)+ 188.
Step 2:
Modifications: 560 mg l,7-dihydro-2#-furo[3,2-f]isoquinolin-6-one used, 380 mg
product obtained (48% yield).
Product:
Data: 'H NMR (400 Hz, CDC13) 8 ppm 3.47 (t, 7=9.05 Hz, 2 H), 4.84 (t, 7=9.05 Hz, 2 H), 7.24 (d, 7=8.56 Hz, 1 H), 7.33 (d, 7=5.87 Hz, 1 H), 8.20 (m, 2 H); MS (M+H)+ 206.
Step 4:
Modifications: 216 mg step 3 products mixture used, 330 mg products mixture obtained . Products:
Step 5:
Modifications: 330 mg step 4 products mixture used, 140 mg of compound 267 and
25 mg of compound 268 obtained.
Products:
Data of compound 267: 'H NMR (400 Hz, CD3OD) 8 ppm 1.07 (m, 12 H), 1.24 (m, 10 H), 1.43 (m, 1 H), 1.88 (dd, 7=8.07,5.38 Hz, 1 H), 2.26 (m, 2 H), 2.61 (dd, 7=13.69,7.09 Hz, 1 H), 2.94 (m, 1 H), 3.42 (t, 7=9.05 Hz, 2 H), 4.05 (dd, 7=11.86, 3.55 Hz, 1 H), 4.24 (s, 1 H), 4.50 (m, 2 H), 4.77 (t, 7=8.93 Hz, 2 H), 5.12 (m, 1 H), 5.29 (d, 7=17.12 Hz, 1 H), 5.76 (m, 2 H), 7.03 (d, 7=8.80 Hz, 1 H), 7.12 (d, 7=6.11 Hz, 1 H), 7.91 (d, 7=5.87 Hz, 1 H), 8.06 (d, 7=8.80 Hz, 1 H); MS: (M+H)+ 726. Data of compound 268: 'H NMR (400 Hz, CD3OD) S ppm 1.06 (m, 12 H), 1.19 (s, 9 H) 1.26 (m, 1 H), 1.44 (m, 1 H), 1.88 (dd, 7=8.07,5.62 Hz, 1 H), 2.24 (d, 7=8.56 Hz, 2 H), 2.64 (m, 1 H), 2.95 (m, 1 H), 4.07 (m, 7=3.42 Hz, 1 H), 4.24 (s, 1 H), 4.54 (m, 2 H), 5.12 (d, 7=10.52 Hz, 1 H), 5.30 (d, 7=17.12 Hz, 1 H), 5.76 (m, 1 H), 5.91 (s, 1 H),
7.39 (d, .7=1.47 Hz, 1 H), 7.68 (m, 2 H), 7.96 (d, 7=1.96 Hz, 1 H), 8.12 (m, 2 H); MS: (M+H/724.
Example 269: Preparation of Compound 269
A solution of 2-trifluormethoxycinnamic acid (11.6 g), diphenylphosphoryl azide (13.75 g), and triethylamine (7.07 g) in benzene (50 mL) was stirred for 1 h. After filtration through a silica gel plug washing with benzene and concentration, the
residue was dissolved in diphenylmethane (80 mL) and refluxed for 3 h. After cooling to it, solids were collected through a plug washing with benzene and dried to give 5.1 g (44%) of the desired product as a solid. 'H NMR (400 MHz, CD3OD) 8 ppm 6.79 (d, 7=7.3 Hz, 1 H), 7.29 (d, 7=7.3 Hz, 1 H), 7.57 (t, 7=8.1 Hz, 1 H), 7.70 (d, 7=7.8 Hz, 1 H), 8.30 (d, 7=8.1 Hz, 1 H); MS: (M+H)+230.
Step 2:
A solution of 5-trifluoromethoxy-2//-isoquinolin-l-one (4.58 g) inPOCb (50 mL) was refluxed for 3 h. After cooling and concentration, the residue was based with 5 N NaOH and extracted with QtCb. The organic layer was washed with brine and dried over MgSO/j. After concentration, purification by flash chromatography of Biotage with 5% ethyl acetate in hexanes gave 4.347 g (88%) of the desired product as a solid. 'H NMR (400 MHz, CDC13) 5 ppm 7.66 (m, 2 H), 7.87 (d, 7=5.9 Hz, 1 H), 8.31 (m, 1 H), 8.37 (d, 7=5.9 Hz, 1 H); MS: (M+H)+ 248.
Step 3:
To a suspension of {l-[2-(l-cyclopropanesulfonylaminocarbonyl-2-vinyl-cyclopropylcarbamoyl)-4-hydroxy-pyrrolidine-l-carbonyl]-2,2-dimethyl-propyl}-carbamic acid tert-butyl ester (56 mg), l-chIoro-5-trifluoromethoxy-isoquinoline (25 mg), and LaCl3 (25 mg) in DMF (1 mL) at -78°C was added tert-BuOK. (0.5 mL, 1 M in THF) and warmed to it. After stirring for 30 min, the reaction was quenched with saturated NI^Cl solution and extracted with ethyl acetate. After concentration, purification by prep HPLC gave 35 mg (46%) of the desired compound 269 as a solid. 'H NMR (400 MHz, CD3OD) 8 ppm 1.03 (m, 12 H), 1.24 (m, 10 H) ,1.44 (dd, 7=9.7, 5.3 Hz, 1 H), 1.88 (dd, 7=8.1,5.6 Hz, 1 H,) 2.28 (m, 2 H), 2.64 (dd, 7=13.7, 7.1 Hz, 1 H), 2.94 (m, 1 H), 4.09 (m, 1 H), 4.21 (d, 7=9.3 Hz, 1 H), 4.53 (m, 2 H), 5.12 (d, 7=11.5 Hz, 1 H), 5.30 (d, 7=17.1 Hz, 1 H), 5.75 (m, 1 H), 5.92 (m, 1 H), 6.60 (d, 7=9.5 Hz, 1 H), 7.49 (d, 7=6.1 Hz, 1 H), 7.60 (m, 1 H), 7.69 (d, 7=7.3 Hz, 1 H), 8.11 (d, 7=6.1 Hz, 1 H), 8.22 (d, 7=8.3 Hz, 1 H); MS: (M+Na)+ 790.
Compound 270 was prepared by following Scheme 2 of Example 269 except that 2-trifluoromethylcinnamic acid was used in place of 2-trifluormethoxycinnamic acid in step 1.
Step 1:
Modifications: 10 g 2-trifluoromethylcinnamic acid used, 5 g product obtained (50%
vieldV
Product:
Data: 'H NMR (400 MHz, CD3OD) 6 ppm 6.83 (m, 1 H), 7.33 (d, 7=7.58 Hz, 1 H), 7.63 (t, 7=7.83 Hz, 1 H), 8.09 (d, 7=7.58 Hz, 1 H), 8.57 (d, 7=8.07 Hz, 1 H).
Step 2:
Modifications: 4.4 g 5-trifIuoromethyl-2//-isoquinolin-l-one used, 3.5 g product
obtained (73% yield).
Cl
Data: 'H NMR (400 MHz, CDC13) 8 ppm 7.75 (t, 7=7.95 Hz, 1 H), 7.90 (m, 1 H), 8.12 (d, 7=7.34 Hz, 1 H), 8.41 (d, 7=6.11 Hz, 1 H), 8.60 (d, 7=8.56 Hz, 1 H).
Step 3:
Modifications: 46 mg l-chloro-5-trifluoromethyl-isoquinoline and 111 mg {l-[2-(l-
Cyclopropanesulfonylaminocarbonyl-2-vinyl-cyclopropylcarbamoyl)-4-hydroxy-
pyrrolidine-l-carbonyl]-2,2-dimethyl-propyl}-carbamic acid tert-butyl ester used, 70
mg product obtained (47% yield).
Product:
BocHN
Data: 'H NMR (400 MHz, CD3OD) 8 ppm 1.06 (m, 12 H), 1.23 (m, 10 H), 1.44 (dd, 7=9.54, 5.38 Hz, 1 H), 1.88 (dd, 7=8.07,5.38 Hz, 1 H), 2.28 (m, 2 H), 2.65 (dd, 7=13.82, 6.97 Hz, 1 H), 2.94 (m, 1 H), 4.07 (m, 1 H), 4.20 (m, 1 H), 4.56 (m, 2 H), 5.12 (m, 1 H), 5.30 (d, 7=17.12 Hz, 1 H), 5.75 (m, 1 H), 5.90 (s, 1 H), 6.59 (d, 7=9.05 Hz, 1 H), 7.53 (d, 7=4.40 Hz, 1 H), 7.65 (t, 7=7.83 Hz, 1 H), 8.12 (d, 7=7.09 Hz, 1 H), 8.15 (d, 7=6.36 Hz, 1 H), 8.50 (d, 7=8.31 Hz, 1 H); MS: (M+Na)+ 774.
Compound 271 was prepared by following Scheme 2 of Example 269 except that 2-chlorocinnamic acid was used in place of 2-trifluormethoxycinnamic acid in step 1.
Step 1:
Modifications: 7 g 2-chlorocinnamic acid used, 5 g product obtained (71% yield).
Data: 'H NMR (400 MHz, CD3OD) 8 ppm 3.02 (m, 4 H), 3.91 (m, 4 H), 6.97 (d, 7=7.34 Hz, 1 H), 7.18 (d, 7=7.34 Hz, 1 H), 7.44 (m, 2 H), 8.02 (d, 7=7.83 Hz, 1 H); MS(M+H)+231.
Step 2:
Modifications: 2.2 g 5-morpholin-4-yl-2#-isoquinolin-l-one used, 2.1 g product
obtained (87% yield).
Product:
Data: 'H NMR (400 MHz, CClsD) 8 ppm 3.09 (m, 4 H), 3.97 (m, 4 H), 7.32 (d, 7=7.58 Hz, 1 H), 7.60 (m, 1 H), 7.91 (d, 7=5.87 Hz, 1 H), 8.06 (d, 7=8.56 Hz, 1 H), 8.26 (d, 7=5.87 Hz, 1 H).
Step 3:
Modifications: 50 mg l-chloro-5-morpholin-4-yl-isoquinoline and 111 mg {l-[2-(l-
Cyclopropanesulfonylaminocarbonyl-2-vinyl-cyclopropylcarbamoyl)-4-hydroxy-
pyrrolidine-l-carbonyl]-2,2-dimethyl-propyl}-carbamic acid te/t-butyl ester used, 40
mg product obtained (26% yield).
Product:
Data: 'H NMR (500 MHz, CD3OD) 8 ppm 1.07 (m, 12 H), 1.26 (m, 10 H), 1.44 (d, 7=7.93 Hz, 1 H), 1.88 (dd, 7=7.93,5.19 Hz, 1 H), 2.25 (m, 2 H), 2.62 (dd, 7=13.73, 7.02 Hz, 1 H), 2.94 (m, 1 H), 3.06 (d, 7=3.97 Hz, 4 H), 3.94 (m, 4 H), 4.07 (d, 7=14.04 Hz, 1 H), 4.25 (s, 1 H), 4.45 (d, 7=12.21 Hz, 1 H), 4.52 (m, 1 H), 5.12 (d, 7=9.46 Hz, 1 H), 5.29 (d, 7=16.79 Hz, 1 H), 5.75 (m, 1 H), 5.85 (s, 1 H), 7.34 (d,
7=7.32 Hz, 1 H), 7.45 (t, 7=7.78 Hz, 1 H), 7.59 (d, 7=6.10 Hz, 1 H), 7.91 (d,/=7.63 Hz, 1 H), 7.97 (d, 7=5.80 Hz, 1 H).
Example 272: Preparation of Compound 272
Compound 272 was prepared by following Scheme 2 of Example 269 except that 2,3-dimethoxycinnamic acid was used in place of 2-trifluormethoxycinnamic acid in step 1.
Step 1:
Modifications: 10.4 g 2,3-dimethoxycinnamic acid used, 4.1 g product obtained (40%
yield).
Product:
Data: 'H NMR (400 MHz, CD3OD) 6 ppm 3.86 (s, 3 H), 3.96 (s, 3 H), 6.82 (d, 7=7.2 Hz, 1 H), 7.10 (d, 7=7.2 Hz, 1 H), 7.28 (d, 7=8.8 Hz, 1 H), 8.07 (d, 7=8.8 Hz, 1 H); MS:(M+H)+206.
Step 2:
Modifications: 4.1 g 5,6-dimethoxy-2//-isoquinolin-l-one used, 4.03 g product obtained (90% yield).
Product:
Data: 'H NMR (400 MHz, CD3OD) 6 ppm 3.97 (s, 3 H), 4.05 (s, 3 H), 7.65 (d, 7=9.29 Hz, 1 H), 7.90 (dd, 7=5.87, 0.98 Hz, 1 H), 8.12 (m, 2 H).
Step 3:
Modifications: 22 mg l-chloro-5,6-dimethoxy-isoquinoline and 56 mg {l-[2-(l-
cyclopropanesulfonylaminocarbonyl-2-vinyl-cyclopropylcarbamoyl)-4-hydroxy-
pyrrolidine-l-carbonyl]-2,2-dimethyI-propyl}-carbamic acid te/t-butyl ester used, 31
mg product obtained (42% yield).
Data: 'H NMR (500 MHz, CD3OD) 6 ppm 1.06 (m, 12 H), 1.26 (m, 10 H), 1.44 (s, 1 H), 1.88 (d, 7=7.32 Hz, 1 H), 2.24 (s, 2 H), 2.60 (m, 1 H), 2.94 (m, 1 H), 3.92 (s, 3 H), 3.99 (s, 3 H), 4.06 (d, 7=11.90 Hz, 1 H), 4.23 (s, 1 H), 4.43 (d, 7=10.68 Hz, 1 H), 4.53 (m, 1 H), 5.12 (d, 7=10.38 Hz, 1 H), 5.30 (d, 7=17.40 Hz, 1 H), 5.77 (m, 2 H),
7.35 (d, 7=9.16 Hz, 1 H), 7.46 (d, 7=5.80 Hz, 1 H), 7.89 (d, 7=5.80 Hz, 1 H), 7.97 (d, 7=8.85 Hz, 1 H).
Compound 273 was prepared by following Scheme 2 of Example 269 except that 4-chloro-3-methoxycinnamic acid was used in place of 2-trifluormethoxycinnamic acid in step 1.
Modifications: 2.5 g 4-chloro-3-methoxycinnamic acid used, 1.2 g product obtained
(48% yield).
Product:
Data: 'HNMR (400 MHz, CD3OD) 5 4.00(s, 3 H), 6.64(d, 7=7.09 Hz, 1 H), 7.15 (d, 7=7.34 Hz, 1 H), 7.21 (s, 1 H), 8.22 (s, 1 H).
Step 2:
Modifications: 1.05 g 7-Chloro-6-methoxy-2//-isoquinolin-l-one used, 0.8 g product
obtained (70% yield).
Data: !H NMR (400 Hz, CDC13) 5 ppm 4.05 (s, 3 H), 7.13 (s, 1 H), 7.48 (d, 7=5.38 Hz, 1 H), 8.21 (d, 7=5.62 Hz, 1 H), 8.34 (s, 1 H); MS: (M+H)* 229.
Step 3:
Modifications: 44 mg l,7-dichloro-6-methoxy-isoquinoline and 113 mg {l-[2-(l-
cyclopropanesulfonylaminocarbonyl-2-vinyl-cyclopropylcarbamoyl)-4-hydroxy-
pyrrolidine-l-carbonyl]-2,2-dimethyl-propyl}-carbamic acid tert-butyl ester used, 25
mg product obtained (17% yield)
Product:
Data: !H NMR (400 Hz, CD3OD) 6 ppm 1.07 (m, 12 H), 1.24 (m, 10 H), 1.44 (dd, 7=9.54, 5.38 Hz, 1 H), 1.88 (dd, 7=8.07, 5.38 Hz, 1 H), 2.26 (m, 1 H,) 2.60 (m, 7=13.69, 6.85 Hz, 1 H), 2.94 (m, 2 H), 3.98 (s, 3 H), 4.06 (m, 1 H), 4.20 (m, 1 H), 4.42 (d, 7=12.23 Hz, 1 H), 4.57 (m, 1 H), 5.12 (d, 7=11.74 Hz, 1 H), 5.30 (d, 7=17.36 Hz, 1 H), 5.76 (m, 1 H), 5.86 (s, 1 H), 7.28 (d, 7=5.62 Hz, 1 H), 7.33 (s, 1 H), 7.92 (d, 7=5.87 Hz, 1 H), 8.09 (s, 1 H); MS: (M+H)+ 749.
Compound 274 was prepared by following Scheme 2 of Example 269 except that 2-fluoro-3-cinnamic acid was used in place of 2-trifluormethoxycinnamic acid in step 1.
Step 1:
Modifications: 3.92 g 2-fluoro-3-cinnamic acid used, 2.4 g product obtained (61%
yield).
Prouuci:
Data: 'H NMR(400 MHz, CD3OD) 6 ppm 4.00 (s, 3 H), 6.72 (m, 1 H), 7.16 (d, 7=7.34 Hz, 1 H), 1.35 (t, 7=8.44 Hz, 1 H), 8.09 (d, 7=8.80 Hz, 1 H).
Step 2:
Modifications: 1.93 g5-fluoro-6-methoxy-2tf-isoquinolin-l-one used, 1.688 g
product obtained (80% yield).
Product:
Data: 'H NMR (CDC13) 5 ppm 4.08 (s, 3 H), 7.44 (dd, 7=9.29, 7.83 Hz, 1 H), 7.75 (d, 7=5.87 Hz, 1 H), 8.12 (d, 7=9.29 Hz, 1 H), 8.22 (d, 7=5.87 Hz, 1 H); MS: (M+H)+ 212.
Step 3:
Modifications: 41 mg l-chloro-5-fluorp-6-methoxy-isoquinoline and 133 mg {l-[2-
(l-cyc]opropanesulfony]aminocarbonyl-2-vinyl-cyclopropy]carbamoyl)-4-hydroxy-
pyrrolidine-l-carbonyl]-2,2-dimethyl-propyl}-carbamic acid tert-butyl ester used, 70
mg product obtained (48% yield).
Product:
BocHN
Data: !H NMR (CD3OD) 5 ppm 1.06 (m, 13 H), 1.21 (s, 9 H), 1.44 (dd, 7=9.78, 5.38 Hz, 1 H), 1.88 (dd, 7=8.19, 5.50 Hz, 1 H), 2.24 (d, 7=9.29 Hz, 2 H), 2.62 (d, 7=13.94 Hz, 1 H), 2.94 (m, 1 H), 4.05 (m, 4 H), 4.22 (d, 7=9.29 Hz, 1 H), 4.45 (m, 1 H), 4.54 (dd, 7=9.66,7.21 Hz, 1 H), 5.12 (d, 7=10.52 Hz, 1 H), 5.30 (d, 7=16.87 Hz, 1 H), 5.76 (m, 1 H), 5.86 (s, 1 H), 7.39 (m, 2 H), 7.95 (d, 7=6.11 Hz, 1 H), 8.00 (d, 7=9.29 Hz, 1 H).
Compound 2 was prepared by following Scheme 2 of Example 269 except that 2-chloro-3-methoxycinnamic acid was used in place of 2-trifluormethoxycinnamic acid in step 1.
Step 1:
Modifications: 658 mg 2-chloro-3-methoxycinnamic acid used, 360 mg product
obtained (54% yield).
Product:
Data: 'H NMR(400 MHz, CD3OD) 6 ppm 4.02 (s, 3 H), 6.91 (d, 7=7.34 Hz, 1 H), 7.23 (d, .7=7.58 Hz, 1 H), 7.35 (d, 7=9.05 Hz, 1 H), 8.27 (d, 7=9.05 Hz, 1 H).
Step 2:
Modifications: 350 mg 5-chloro-6-methoxy-2//-isoquinolin-l-one used, 300 mg
product obtained (80% yield).
Product:
Data: 'H NMR (400 Hz, CDC13) 5 ppm 4.09 (s, 3 H), 7.43 (d, 7=9.29 Hz, 1 H), 7.93 (d, 7=6.11 Hz, 1 H), 8.30 (m, 2 H); MS (M+H)+ 229.
Step 3:
Modifications: 68 mg l,5-dichloro-6-methoxy-isoquinoline and 167 mg {l-[2-(l-
cyc]opropanesulfonylaminocarbonyl-2-vinyl-cyclopropylcarbamoyl)-4-hydroxy-
pyrrolidine-l-carbonyl]-2,2-dimethyl-propyl}-carbamic acid tert-buty] ester used,
Data: 'H NMR (400 MHz, CD3OD) 6 ppm 1.06 (m, 12 H), 1.25 (m, 10 H), 1.46 (d, 7=5.62 Hz, 1 H), 1.88 (dd, 7=8.07, 5.62 Hz, 1 H), 2.27 (m, 2 H), 2.62 (m, 1 H), 2.94 (m, 1 H), 4.05 (m, 4 H), 4.22 (d, 7=9.05 Hz, 1 H), 4.46 (d, 7=11.49 Hz, 1 H), 4.54 (dd, 7=9.78, 6.36 Hz, 1 H), 5.13 (d, 7=10.52 Hz, 1 H), 5.30 (d, 7=15.89 Hz, 1 H), 5.76 (m, 1 H), 5.86 (s, 1 H), 7.40 (d, 7=9.29 Hz, 1 H), 7.55 (d, 7=6.36 Hz, 1 H), 8.01 (d, 7=6.36 Hz, 1 H), 8.20 (d, 7=9.29 Hz, 1 H); MS: (M+H)+ 749.
Compound 276 was prepared by following Scheme 2 of Example 269 except that 3-chloro-2-methoxycinnarnic acid was used in place of 2-trifluormethoxycinnamic acid instep 1.
Stepl:
Modifications: 4.24 g 3-chloro-2-methoxycinnamic acid used, 2.4 g product obtained
Product:
Data: 'H NMR (400 MHz, CD3OD) 6 ppm 3.93 (s, 1 H), 6.85 (d, /=7.34 Hz, 1 H), 7.24 (d, 7=7.34 Hz, 1 H), 7.52 (d, 7=8.80 Hz, 1 H), 8.03 (d, 7=8.80 Hz, 1 H); MS: (M+H)+ 210.
Step 2:
Modifications: 2.09 g 6-chloro-5-methoxy-2H-isoquinolin-l-one used, 1.9 g product
obtained (83% yield).
Product:
Data: 'H NMR (400 Hz, CDC13) 8 ppm 4.03 (s, 2 H), 7.63 (d, 7=9.05 Hz, 1 H), 7.86 (d, 7=5.14 Hz, 1 H), 8.06 (d, 7=9.05 Hz, 1 H), 8.32 (d, 7=5.62 Hz, 1 H); MS: (M+H)* 229.
Step 3:
Modifications: 91 mg l,6-dichloro-5-methoxy-isoquinoline and 226 mg {l-[2-(l-
cyclopropanesulfonylaminocarbonyl-2-vinyl-cyclopropylcarbamoyl)-4-hydroxy-
pyrro]idine-l-carbonyl]-2,2-dimethyl-propyl }-carbamic acid tert-butyl ester used,
114 mg product obtained (38% yield).
Product:
Data: 'H NMR (400 Hz, CD3OD) 8 ppm 1.06 (m, 12 H), 1.23 (m, 10 H), 1.44 (t, 7=6.72 Hz, 1 H), 1.88 (dd, 7=7.95, 5.26 Hz, 1 H), 2.25 (m, 2 H), 2.62 (dd, 7=13.33, 6.48 Hz, 1 H), 2.94 (m, 1 H), 3.98 (s, 3 H), 4.03 (m, 1 H), 4.20 (m, 1 H), 4.51 (m, 2 H), 5.12 (d, 7=10.52 Hz, 1 H), 5.32 (s, 1 H), 5.75 (m, 1 H), 5.87 (s, 1 H), 7.50 (m, 2 H), 7.95 (d, 7=8.80 Hz, 1 H), 8.06 (d, 7=5.87 Hz, 1 H); MS (MH*) 749.
ng Scheme 2 of Example 269 except that 3-(4-chloro-phenyl)-3-methoxy-acrylic acid was used in place of 2-trifluormethoxycinnamic acid in step 1.
Step 1:
Modifications: 4.24 g 3-(4-chloro-phenyl)-3-methoxy-acrylic acid used, 130 mg
Product:
Data: 'H NMR(400 MHz, CD3OD) 5 ppm 3.96 (s, 3 H), 7.19 (dd, 7=8.80, 2.45 Hz, 1 H), 7.28 (d, 7=2.45 Hz, 1 H), 7.34 (s, 1 H), 8.25 (d, 7=9.05 Hz, 1 H); MS: (M+H)+ 210.
Step 2:
Modifications: 105 mg 7-chloro-4-methoxy-2//-isoquinolin-l-one used, 60 mg
product obtained (71% yield).
Product:
Data: 'H NMR (400 Hz, CDC13) 8 ppm 4.05 (s, 3 H), 7.67 (dd, 7=8.80,1.96 Hz, 1 H), 7.80 (s, 1 H), 8.16 (d, 7=9.05 Hz, 1 H), 8.24 (d, 7=1.96 Hz, 1 H); MS: (M+H)* 229.
Step 3:
Modifications: 46 mg l,7-dich1oro-4-methoxy-isoquinoline and 113 mg {l-[2-(l-
cyclopropanesulfonylaminocarbonyl-2-vinyl-cyclopropylcarbamoyl)-4-hydroxy-
pyrrolidine-l-carbonyl]-2,2-dimethyl-propyl}-carbamic acid tert-butyl ester used, 50
mg product obtained (31% yield).
Product:
Data: 'H NMR (400 Hz, CD3OD) 8 ppm 1.06 (m, 11 H), 1.16 (s, 9 H), 1.24 (m, 2 H), 1.44 (dd, 7=9.54,5.38 Hz, 1 H), 1.88 (dd, 7=8.07,5.62 Hz, 1 H), 2.28 (m, 2 H), 2.59 (dd, 7=13.69, 6.85 Hz, 1 H), 2.94 (m, 1 H), 4.00 (s, 3 H), 4.05 (d, 7=11.74 Hz, 1 H), 4.19 (s, 1 H), 4.43 (d, 7=11.49 Hz, 1 H), 4.56 (dd, 7=10.03,6.85 Hz, 1 H), 5.12 (d, 7=11.49 Hz, 1 H), 5.30 (d, 7=17.12 Hz, 1 H), 5.76 (m, 2 H), 7.57 (s, 1 H), 7.67 (d, 7=8.56 Hz, 1 H), 8.04 (s, 1 H), 8.08 (d, 7=8.80 Hz, 1 H); MS: (M+H)+ 749.
following Scheme 2 of Example 269 except step 1.
Step 1:
Modifications: A mixture of 6-methoxy-2#-isoquinolin-l-one (700 mg) and NCS
(532 mg) in MeCN (10 mL) was refluxed for 3 h. Filtration gave 600 mg (72%) of
the desired product as a solid.
Product:
Data: 'H NMR(400 MHz, CD3OD) 8 ppm 3.96 (s, 1 H), 7.19 (dd, 7=8.80,2.45 Hz, 1 H), 7.28 (d, 7=2.45 Hz, 1 H), 7.34 (s, 1 H), 8.25 (d, 7=9.05 Hz, 1 H); MS: (M+H)*" 210.
Step 2:
Modifications: 500 mg 4-chIoro-6-methoxy-2H-isoquinoIin-l-oneused, 400 mg
product obtained.
Product:
Data: 'H NMR (400 Hz, CDC13) 5 ppnr4.01 (s, 3 H), 7.35 (d, 7=2.45 Hz, 1 H), 7.41 (d, 7=2.45 Hz, 1 H), 8.24 (d, 7=9.29 Hz, 1 H), 8.27 (s, 1 H); MS: (M+H)+ 229.
Step 3:
Modifications: 42 mg l,4-dichloro6-methoxy-isoquinoline and 117 mg {l-[2-(l-
cyclopropanesulfonylaminocarbonyl-2-vinyl-cyclopropylcarbamoyl)-4-hydroxy-
pyrroIidine-l-carbonyl]-2,2-dimethyl-propyl}-carbamic acid tert-butyl ester used, 70
mg product obtained (47% yield).
Product:
Data: 'H NMR (400 Hz, CD3OD) 8 ppm 1.05 (m, 12 H), 1.25 (m, 10 H), 1.44 (m, 1 H), 1.88 (dd, 7=8.07,5.62 Hz, 1 H), 2.24 (m, 2 H), 2.61 (dd, 7=13.82, 6.72 Hz, 1 H), 2.94 (m, 1 H), 3.97 (s, 3 H), 4.04 (dd, 7=11.74,2.69 Hz, 1 H), 4.21 (s, 1 H), 4.49 (m, 2 H), 5.12 (d, 7=10.52 Hz, 1 H), 5.29 (d, 7=17.12 Hz, 1 H), 5.75 (m, 2 H), 7.19 (d, 7=8.80 Hz, 1 H), 7.37 (s, 1 H), 8.00 (s, 1 H), 8.13 (d, 7=9.05 Hz, 1 H); MS: (M+H)+ 749.
Compound 279 was prepared by following Scheme 2 of Example 269 except that 3-methoxy-3-(3-methoxy-phenyl)-acrylic acid was used in place of 2-trifluormethoxycinnamic acid in step 1.
Step 1:
Modifications: 4.24 g 3-methoxy-3-(3-methoxy-phenyl)-acrylic acid used, 400 mg
Product:
Step 2:
Modifications: 400 mg 4,6 -dimethoxy-2//-isoquinolin-l-one used, 300 mg product
obtained (69% yield).
Product:
Data: 'H NMR (400 Hz, CDC13) 8 ppm 3.97 (s, 3 H), 4.05 (s, 3 H), 7.31 (dd, 7=9.17, 2.57 Hz, 1 H), 7.45 (d, 7=2.69 Hz, 1 H), 7.75 (s, 1 H), 8.16 (d, 7=9.29 Hz, 1 H); MS: (M+H)+ 224.
Step 3:
Modifications: 89 mg l-chloro-4,6-dimethoxy-isoquinoline and 223 mg { l-[2-(l-
Cyclopropanesulfonylaminocarbonyl-2-viny]-cyclopropylcarbamoyl)-4-hydroxy-
pyrrolidine-l-carbonyl]-2,2-dimethyl-propyl}-carbamic acid tert-butyl ester used,
160 mg product obtained (54% yield).
Product:
Data: 'H NMR (400 Hz, CD3OD) 5 ppm 1.07 (m, 12 H), 1.21 (m, 10 H), 1.43 (m, 1 H), 1.87 (dd, 7=8.07, 5.62 Hz, 1 H), 2.24 (m, 2 H), 2.58 (dd, 7=13.57, 6.97 Hz, 1 H), 2.94 (m, 1 H), 3.92 (s, 3 H), 3.99 (s, 3 H), 4.04 (dd, 7=11.74, 2.93 Hz, 1 H), 4.24 (s, 1 H), 4.39 (d, 7=1 1.98 Hz, 1 H), 4.50 (m, 1 H), 5.12 (d, 7=10.52 Hz, 1 H), 5.29 (d, 7=16.87 Hz, 1 H), 5.75 (m, 2 H), 7.12 (d, 7=9.05 Hz, 1 H), 7.40 (d, 7=2.20 Hz, 1 H),
Compound 280 was prepared by following Scheme 2 of Example 269 except that 3-(3-difluoromethoxy-phenyl)-acrylic acid was used in place of 2-trifluormethoxycinnamic acid in step 1.
Step 1:
Modifications: 4.28 g 3-(3-difluorornethoxy-phenyl)-acrylic acid used, 3.1 g product
obtained (72% yield).
Data: MS: (M+H)* 212.
Step 2:
Modifications: 2 g 6-difluoromethoxy-2#-isoquinoIin-l-one used, 1.5 g product
obtained (61% yield).
Product:
Data: 'H NMR (400 Hz, CDC13) 5 ppm 6.69 (t, 7=72.75 Hz, 1 H), 7.49 (m, 2 H), 8.28 (d, /=5.62 Hz, 1 H), 8.36 (d, 7=9.05 Hz, 1 H); MS: (M+H)* 230.
Step 3:
Modifications: 46 mg l-chloro-6-difluoromethoxy-isoquinoline and 113 mg {l-[2-
(l-Cyclopropanesulfonylaminocarbonyl-2-viny]-cyclopropylcarbamoyl)-4-hydroxy-
pyrrolidine-l-carbonyl]-2,2-dimethyl-propyl}-carbamic acid tert-butyl ester used, 8
mg product obtained (5% yield).
Product:
Data: 'H NMR (400 Hz, CD3OD) 5 ppm 1.05 (m, 12 H), 1.23 (m, 10 H), 1.44 (m, 2 H), 1.88 (dd, 7=8.19, 5.50 Hz, 1 H), 2.30 (m, 2 H), 2.67 (d, 7=13.94 Hz, 1 H), 2.93 (m, 1 H), 4.07 (d, 7=10.27 Hz, 1 H), 4.21 (s, 1 H), 4.53 (d, 7=6.85 Hz, 2 H), 5.13 (m, 1 H), 5.31 (s, 1 H), 5.76 (d, 7=47.93 Hz, 2 H), 7.11 (m, 2 H), 7.26 (d, 7=6.11 Hz, 1 H), 7.81 (d, 7=6.11 Hz, 1 H), 8.16 (m, 1 H); MS: (M+H)+ 700.
Example 281: Preparation of Compound 281
Compound 281 was prepared by following Scheme 2 of Example 269 except that 3-chloro-3-phenyl-acrylic acid was used in place of 2-trifluormethoxycinnamic acid in step 1.
Step 1:
Modifications: 11 g 3-chloro-3-phenyl-acrylic acid used, 3.1 g product obtained
(29% yield).
Product:
Data: 'H NMR (400 MHz, CD3OD) 8 ppm 7.34 (s, 1 H), 7.52 (t, 7=7.58 Hz, 1 H), 7.77 (t, 7=7.46 Hz, 1 H), 7.90 (d, 7=8.07 Hz, 1 H), 8.39 (d, .7=8.07 Hz, 1 H), 11.37 (s, 1 H); MS: MS: (M+H)+ 180.
Step 2:
(66% yield) Product:
Data: 'H NMR (400 MHz, CDC13) 5 ppm 7.77 (ddd, 7=8.31,7.09, 1.22 Hz, 1 H), 7.88 (ddd, 7=8.31,7.09,1.22 Hz, 1 H), 8.23 (d, 7=8.31 Hz, 1 H), 8.34 (s, 1 H), 8.36 (d, 7=8.56 Hz, 1 H); MS: (M+H)+ 198.
Step 3:
Modifications: 20 mg 1,4-dichloro-isoquinoline and 56 mg {l-[2-(l-
cyclopropanesulfonylaminocarbonyI-2-vinyl-cyclopropylcarbamoyl)-4-hydroxy-
pyrrolidine-l-carbonyl]-2,2-dimethyl-propyl}-carbamic acid tert-buty] ester used, 33
mg product obtained (30% yield).
Data: !H NMR (400 MHz, CD3OD) 8 ppm 1.06 (m, 12 H), 1.24 (m, 10 H), 1.44 (dd, 7=9.41, 5.26 Hz, 1 H), 1.88 (dd, 7=7.83, 5.62 Hz, 1 H), 2.27 (m, 2 H), 2.63 (dd, 7=13.82,6.97 Hz, 1 H), 2.94 (m, 1 H), 4.06 (dd, 7=11.49,2.45 Hz, 1 H),4.22 (d, 7=9.29 Hz, 1 H), 4.53 (m, 2 H), 5.12 (d, 7=10.76 Hz, 1 H), 5.29 (d, 7=17.12 Hz, 1 H), 5.75 (m, 1 H), 5.85 (s, 1 H), 6.60 (d, 7=8.80 Hz, 1 H), 7.63 (t, 7=7.58 Hz, 1 H), 7.86 (t, 7=7.70 Hz, 1 H), 8.06 (s, 1 H), 8.11 (d, 7=8.56 Hz, 1 H), 8.25 (d, 7=8.31 Hz, 1 H); MS:(M+H)+718.
Example 282: Preparation of Compound 282
Compound 2 was prepared by following Scheme 2 of Example 269 except that 3-chloro-3-phenyl-acrylic acid was used in place of 2-trifluormethoxycinnamic acid in step 1.
Step 1:
Modifications: 20 g 3-chloro-3-phenyl-acrylic acid used, 2 g product obtained (8%
yield).
Product:
Data:MS:(M+H)+230.
Step 2:
Modifications: 2 g 6-trifluoromethoxy-2H-isoquinolin-l-one used, 0.7 product
obtained (33% yield).
Product:
Data: 'H NMR (400 MHz, CDC13) 5 ppm 7.51 (d, 7=9.29 Hz, 1 H), 7.59 (d, 7=5.62 Hz, 1 H), 7.64 (s. 1 H), 8.31 (d, 7=5.62 Hz, 1 H), 8.40 (d, 7=9.05 Hz, 1 H); MS: (M+H)+ 248.
Step 3:
Modifications: 50 mg l-chloro-6-trifluoromethoxy-isoquinoline and 1 13 mg { l-[2-
(l-cyclopropanesulfonylaminocarboriyl-2-vinyl-cyclopropylcarbamoyl)-4-hydroxy-
pyrrolidine-l-carbonyl]-2,2-dimethyl-propyl}-carbamic acid tert-butyl ester used, 42
mg product obtained (27% yield).
Product:
Data:. ]H NMR (400 MHz, CD3OD) 6 ppm 1.05 (m, 12 H), 1.24 (m, 10H), 1.44 (dd, 7=9.17, 5.50 Hz, 1 H), 1.88 (dd, 7=8.07, 5.62 Hz, 1 H), 2.28 (m, 2 H), 2.63 (dd, .7=13.45,7.09 Hz, 1 H), 2.94 (m, 1 H), 4.06 (dd, 7=11.25, 2.45 Hz, 1 H),4.21 (s, 1 H), 4.53 (m, 2 H), 5.13 (d, 7=10.52 Hz, 1 H), 5.30 (d, 7=17.12 Hz, 1 H), 5.75 (m, 1 H), 5.89 (s, 1 H), 7.39 (m, 2 H), 7.72 (s, 1 H), 8.05 (d, 7=5.87 Hz, 1 H), 8.31 (d, 7=9.05 Hz, 1 H), 9.18 (s, 1 H); MS: (M+H)+ 768.
Compound 283 was prepared by following Scheme 2 of Example 269 except that 3-(4-f!uoro-phenyl)-3-methoxy-acrylic acid was used in place of 2-trifluormethoxycinnamic acid in step 1.
Stepl:
Modifications: 3.82 g 3-(4-Fluoro-phenyl)-3-methoxy-acrylic acid used, 198 mg
product obtained (5% yield).
Product:
Data: MS: (M+H)+ 194.
Step 2:
Modifications: 193 mg 7-fluoro-4-methoxy-2tf-isoquinolin-l-one used, 199 mg
product obtained (94% yield).
Product:
Data: 'H NVTR (400 MHzr CDC13) 8 pom 4.05 (s, 3 H), 7.49 (m, 1 H), 7.78 (s, 1 H), 7.86 (dd, 7=9.66,2.57 Hz, 1 H), 8.23 (dd, .7=9.29, 5.38 Hz, 1 H); MS: (M+H)+ 212.
Step 3:
Modifications: 42 mg l-chloro-7-fluoro-4-methoxy-isoquinoline and 112 mg {l-[2-
(l-cyclopropanesu]fonylaminocarbonyl-2-vinyl-cyclopropylcarbamoyI)-4-hydroxy-
pyrrolidine-l-carbonyl]-2,2-dimethyl-propyl}-carbamic acid terr-butyl ester used, 40
mg product obtained (14% yield).
Product:
Data: 'H NMR (400 MHz, CD3OD) S ppm 1.06 (m, 12 H), 1.24 (m, 10 H), 1.42 (m, 1 H), 1.87 (dd, 7=7.95,5.50 Hz, 1 H), 2.23 (m, 2 H), 2.55 (dd, 7=13.08,6.48 Hz, 1 H), 2.93 (m, 1 H), 4.06 (s, 3 H), 4.09 (m, 1 H), 4.23 (s, 1 H), 4.30 (d, 7=11.49 Hz, 1 H), 4.46 (m, 1 H), 5.12 (d, 7=10.27 Hz, 1 H), 5.29 (d, 7=17.36 Hz, 1 H), 5.40 (s, 1 H), 5.76 (m, 1 H), 7.46 (d, 7=9.05 Hz, 1 H), 7.56 (d, 7=2.20 Hz, 1 H), 7.75 (s, 1 H), 8.18 (d, 7=9.05 Hz, 1 H); MS: (M+H)+ 749.
Compound 284 was prepared by following Scheme 2 of Example 269 except step 1.
Step 1:
Modifications: A mixture of 7-methoxy-2#-isoquinolin-l-one (876 mg) andNCS (665 mg) in MeCN (10 mL) was refluxed for 3 h. Filtration gave 500 mg (47%) of the desired product as a solid. Product:
Data: 'H NMR (400 MHz, CD3OD) 5 ppm 4.00 (s, 3 H), 7.58 (m, 2 H), 8.14 (d, J=10.03 Hz, 1 H), 8.17 (s, 1 H).
Step 2:
Modifications: 418 mg 4-chloro-7-methoxy-2H-isoquinoIin-l-oneused, 410 mg
product obtained (90% yield).
Product:
L/l
Data: 1H NMR (400 Hz, CDC13) 5 ppm 4.00 (s, 3 H), 7.49 (dd, 7=9.16, 2.44 Hz, 1 H), 7.55 (d, 7=2.44 Hz, 1 H), 8.12 (d, 7=9.16 Hz, 1 H), 8.21 (s, 1 H); MS: (M+H)+ 229.
Step 3:
Modifications: 42 mg l,4-dichloro-7-methoxy-isoquinolineand 117 mg {l-[2-(l-
cyclopropanesulfonylaminocarbonyI-2-vinyl-cyclopropylcarbamoyl)-4-hydroxy-
pyrrolidine-l-carbonyl]-2,2-dimethyl-propyl}-carbamic acid tert-butyl ester used, 50
mg product obtained (33% yield).
Product:
Data: 'H NMR (400 Hz, CD3OD) 5 ppm 1.05 (m, 20 H), 1.24 (m, 2 H), 1.44 (m, 1 H), 1.89 (dd, 7=8.19,5.50 Hz, 1 H), 2.28 (m, 2 H), 2.62 (dd, 7=13.69, 6.85 Hz, 1 H), 2.94 (m, 1 H), 3.92 (s, 3 H), 4.07 (dd, 7=11.98,3.42 Hz, 1 H), 4.19 (m, 1 H), 4.44 (d, 7=11.74 Hz, 1 H), 4.58 (dd, 7=10.27, 7.09 Hz, 1 H), 5.12 (m, 1 H), 5.31 (d, 7=17.12 Hz, 1 H), 5.78 (m, 2 H), 7.49 (m, 2 H), 7.91 (s, 1 H), 8.02 (m, 1 H); MS: (M+H)+ 749.
Compound 285 was prepared by following Scheme 2 of Example 269 except that was used in place of 2-difIuormethoxycinnamic acid in step 1.
Step 1 and step2: See compound 256
Step 3:
Modifications: 46 mg l-chloro-5-difluoromethoxy-isoquinoline and 111 mg {l-P-Cl-yclopropanesulfonylarninocarbonyl^-vinyl-cyclopropylcarbamoylM-hydroxy-pyn-olidine-l^arbonylj^^-dimethyl-propylJ-carbaniic acid tert-butyl ester used, 40 mg product obtained (27% yield). Product:
OCF2
Data: 'H NMR (400 MHz, CD3OD) 6 ppm 1.06 (m, 12 H), 1.25 (m, 10 H), 1.44 (m, 1 H. 1 89 Cm. 1 HV 2,22 (m. 2 ffi. 2.62 (m. 1 m 2.94 (m, 1 H), 4,08 (m, 1 H), 4.23 (d, 7=9.54 Hz, 1 H), 4.52 (m, 2 H), 5.12 (d, 7=10.76 Hz, 1 H), 5.29 (d, 7=17.61 Hz, 1 H), 5.75 (m, 7=10.03 Hz, 1 H), 5.88 (s, 1 H), 6.60 (s, 1 H), 7.02 (t, 7=73.48 Hz, 1 H), 7.52 (m, 3 H), 8.07 (m, 7=5.75,5.75 Hz, 2 H); MS: (M+Na)+ 772.
Compound 286 was prepared by following Scheme 2 of Example 269 except that 3-(2,3-dihydro-benzo[l,4]dioxin-5-yl)-acrylic acid was used in place of 2-trifluormethoxycinnamic acid in step 1.
Step 1:
Modifications: 4.12 g 3-(2,3-dihydro-benzo[l,4]dioxin-5-yl)-acrylic acid used, 2.2 g
product obtained (53% yield).
Product:
Data: !H NMR (400 MHz, CD3OD) 5 ppm 4.37 (m, 4 H), 6.83 (d, 7=7.09 Hz, 1 H), 7.02 (d, 7=8.80 Hz, 1 H), 7.12 (d, 7=7.34 Hz, 1 H), 7.79 (d, 7=8.80 Hz, 1 H); MS: (M+H)+ 204.
Step 2:
Modifications: 2.05 g 2,3-dihydro-7#-l,4-dioxa-7-aza-phenanthren-8-one used, 1.5
g product obtained (68% yield).
Product:
Data: 'H NMR (400 Hz, CDC13) 6 ppm 4.42 (m, 4 H), 7.24 (d, 7=9.05 Hz, 1 H), 7.77 (d, 7=5.87 Hz, 1 H), 7.84 (d, 7=9.05 Hz, 1 H), 8.18 (d, 7=5.87 Hz, 1 H); MS: (M+H)+ 222.
Step 3:
Modifications: 88 mg 8-Chloro-2,3-dihydro-l,4-dioxa-7-aza-phenanthrene and 223
mg {1 -[2-(l-CyclopropanesulfonyIaminocarbonyl-2-vinyl-cyclopropylcarbamoyl)-4-
hydroxy-pyrrolidine-l-carbonyl]-2,2-dimethyl-propyl}-carbaraic acid fm-butyl ester
used, 140 mg product obtained (47% yield).
Product:
Data: 'H NMR (400 Hz, CD3OD) 8 ppm 1.06 (m, 12 H), 1.24 (m, 10 H), 1.43 (dd, 7=9.05, 5.14 Hz, 1 H), 1.87 (m, 1 H), 2.22 (d, 7=9.29 Hz, 2 H), 2.60 (dd, 7=13.45, 7.09 Hz, 1 H), 2.94 (m, 1 H), 4.05 (dd, 7=11.62, 2.81 Hz, 1 H), 4.24 (s, 1 H), 4.44 (m, 6 H), 5.13 (d, 7=17.36 Hz, 1 H), 5.29 (d, 7=17.36 Hz, 1 H), 5.75 (m, 2 H), 7.04 (d,
f_0 OQ W-7 1 W) 7 AA (H fc
Hz, 1 H); MS: (M+Hf 742.
Compound 287
Compound 287 was prepared by following Scheme 2 of Example 269 except that 3-(2,2-difluoro-benzo[l,3]dioxol-4-yl)-acrylic acid was used in place of 2-trifluormethoxycinnamic acid in step 1.
Step 1:
Modifications: 4.56 g 3-(2,2-difluoro-benzo[l,3]dioxol-4-yl)-acrylic acid used, 2.2 g
product obtained (55% yield).
Product:
Data: 'H NMR (400 MHz, CD3DOD) 8 ppm 6.63 (d, 7=7.09 Hz, 1 H), 7.29 (d, 7=7.34 Hz, 1 H), 7.40 (d, 7=8.80 Hz, 1 H), 8.19 (d, 7=8.80 Hz, 1 H); MS: (M+H)* 226.
Step 2:
Modifications: 2.2 g 2,2-difluoro-7#-l,3-dioxa-7-aza-cyclopenta[a]naphthalen-6-one
used, 2.1 g product obtained (87% yield).
Product:
Data: 'H NMR (500 Hz, CDC13) ppm 7.51 (d, 7=9.29 Hz, 1 H), 7.65 (d, 7=5.87 Hz, 1 H), 8.22 (d, 7=9.05 Hz, 1 H), 8.32 (d, 7=5.87 Hz, 1 H); MS: (M+H)+ 244.
Step 3:
Modifications: 48 mg 6-chloro-2,2-difluoro-l,3-dioxa-7-aza-
cyclopenta[a]naphthalene and 113 mg {l-[2-(l-cyclopropanesulfonylaminocarbonyl-
-hydroxy-pyrrolidine-l-carbonyl]-2,2-dimethyl-propyl }-carbamic acid tert-butyl ester used, 40 mg product obtained (27% yield). Product:
Data: 1H NMR (400 Hz, CD3OD) 5 ppm 1.02 (s, 12 H), 1.24 (m, 10 H), 1.43 (m, 1
I
H), 1.88 (dd, 7=8.07,5.38 Hz, 1 H), 2.32 (d, 7=3.67 Hz, 2 H), 2.64 (d, 7=13.45 Hz, 1 H), 2.95 (m, 1 H), 4.05 (d, 7=11.49 Hz, 1 H), 4.19 (d, 7=9.29 Hz, 1 H), 4.53 (m, 2 H), 5.12 (d, 7=9.78 Hz, 1 H), 5.32 (s, 1 H), 5.77 (m, 2 H), 7.34 (d, 7=5.87 Hz, 1 H), 7.46 (df 7=9.05 Hz, 1 H), 8.11 (m, 2 H); MS: (M+Hf 764.
Example 288: Preparation of Compound 288
Compound 288 was prepared by following Scheme 2 of Example 269 except that 3-(2,2-difluoro-benzo[l,3]dioxol-5-yI)-acrylic acid was used in place of 2-trifluormethoxycinnamic acid in step 1.
Step 1:
Modifications: 1 g 3-(2,2-difluoro-benzo[l,3]dioxol-5-yl)-acrylic acid used, 0.55 g
product obtained.
Product:
Data: 'H NMR (400 MHz, CD3DOD) 5 ppm 6.69 (d, 7=7.09 Hz, 1 H), 7.19 (d, 7=7.09 Hz, 1 H), 7.47 (s, 1 H) 7.98 (s, 1 H); MS: (M+H)+ 226.
Step 2:
Modifications: 0.5 g2,2-difluoro-6flr-[l,3]dioxolo[4,5-g]isoquinolin-5-one used, 0.4
g product obtained.
Product:
Data: 'H NMR (400 Hz, CDC13) 8 7.41 (s, 1 H), 7.57 (d, 7=5.49 Hz, 1 H), 7.94 (s, 1 H), 8.27 (d, 7=5.80 Hz, 1 H); MS (M+H)+ 244.
Step 3:
Modifications: 48 mg 5-chloro-2,2-difluoro-[l,3]dioxolo[4,5-g]isoquinoline and 112
mg {l-[2-(l-Cyclopropanesulfonylaminocarbonyl-2-vinyl-cycIopropylcarbamoyl)-4-
hydroxy-pyrrolidine-l-carbonyl]-2,2-dimethyl-propyl}-carbamic acid tert-butyl ester
used, 30 mg product obtained.
Product:
Data: 'H NMR (400 Hz, CD3OD) 8 ppm 1.06 (m, 12 H), 1.25 (m, 10 H), 1.42 (m, 1 H), 1.87 (dd, 7=8.07,5.62 Hz, 1 H), 2.26 (m, 2 H), 2.61 (dd, 7=13.57, 6.97 Hz, 1 H), 2.93 (m, 1 H), 4.07 (dd, 7=11.86, 2.81 Hz, 1 H), 4.22 (m, 1 H), 4.40 (d, 7=11.98 Hz, 1 H), 4.52 (m, 1 H), 5.11 (d, 7=10.52 Hz, 1 H), 5.29 (d, 7=17.12 Hz, 1 H), 5.37 (s, 1 H), 5.74 (m, 1 H), 7.39 (s, 1 H), 7.56 (s, 1 H), 7.63 (d, 7=5.62 Hz, 1 H), 7.99 (d, 7=5.62 Hz, 1 H).
Compound 289
Example 289: Preparation of Compound 289
A suspension of compound 287 (15 mg) and Pt(S)/C (5%, 5 mg) in ethyl acetate (5 mL) was hydrogenated at 10 psi for 30 min. After filtration, concentration quantitatively gave 15 rag of compound 289 as a solid. 'H NMR (400 MHz, CD3OD) 5 ppm 1.09 (m, 26 H), 1.57 (m, 4 H), 2.30 (m, 1 H), 2.61 (m, 7=13.82, 7.21 Hz, 1 H), 2.96 (m, 1 H), 4.05 (m, 7=13.94 Hz, 1 H), 4.19 (d, 7=9.54 Hz, 1 H), 4.53 (m, 2 H), 5.89 (s, 1 H), 7.34 (d, 7=5.87 Hz, 1 H), 7.46 (d, 7=9.05 Hz, 1 H), 8.09 (d, 7=5.87 Hz, 1 H), 8.12 (d, 7=8.80 Hz, 1 H); MS: (M+H)* 766.
Compound 290 (15mg, 100%) was prepared by following Scheme 3 of Example 289 by using 15 mg of compound 286. Data: 'H NMR (400 Hz, CD3OD) 5 ppm
1.02 (m, 14 H), 1.23 (m, 12 H), 1.58 (m, 4 H), 2.25 (m, 1 H), 2.58 (dd, 7=13.82,7.21 Hz, 1 H), 2.96 (m, 1 H), 4.05 (m, 7=11.25, 2.93 Hz, 1 H), 4.25 (d, 7=9.54 Hz, 1 H), 4.39 (m, 5 H), 4.52 (m, 7=10.03,7.34 Hz, 1 H), 5.81 (s, 1 H), 7.03 (d, 7=9.05 Hz, 1 H), 7.43 (d, 7=6.11 Hz, 1 H), 7.69 (d, 7=9.05 Hz, 1 H), 7.88 (d, 7=6.11 Hz, 1 H); MS: (M+H)+ 744.
Comoound 291 C28me. 100%) was oreoared bv followine Scheme 3 of Kxamole 289 by using 28 mg of compound 251. Data: !H NMR (400 MHz, CD3OD) 6 ppm 1.01 (m, 15 H), 1.26 (m, 11 H), 1.37 (m, 1 H), 1.58 (m, 3 H), 2.25 (m, 1 H), 2.58 (dd, 7=13.6,7.0 Hz, 1 H), 2.96 (m, 1 H), 3.99 (s, 3 H), 4.06 (m, 1 H), 4.25 (m, 1 H), 4.44 (m, 1 H), 4.53 (dd, 7=10.3,7.6 Hz, 1 H), 5.78 (s, 1 H), 6.64 (d, 7=9.8 Hz, 1 H), 7.55 (m, 2 H), 7.71 (t, 7=7.3 Hz, 1 H), 8.09 (d, 7=8.6 Hz, 1 H), 8.14 (d, 7=8.1 Hz, 1 H); MS: (M+Na)+ 738.
Compound 292 (16 mg, 84%) was prepared by following Scheme 3 of Example 289 by using 19 mg of compound 253. 'H NMR (400 MHz, CD3OD) 8 ppm 0.90 (m, 15 H), 1.15 (m, 12 H), 1.48 (m, 3 H), 2.18 (m, 1 H), 2.51 (dd, 7=13.7,6.9 Hz, 1 H), 2.88 (m, 1 H), 3.90 (s, 3 H), 3.98 (dd, 7=11.6, 3.1 Hz, 1 H), 4.18 (d, 7=9.5 Hz, 1 H), 4.36 (d, 7=11.0 Hz, 1 H), 4.45 (dd, 7=10.2,7.2 Hz, 1 H), 5.76 (s, 1 H), 6.56 (d, 7=9.3 Hz, 1 H), 7.05 (d, 7=7.6 Hz, 1 H), 7.34 (t, 7=8.1 Hz, 1 H), 7.51 (d, 7=5.9 Hz, 1 H), 7.65 (d, 7=8.3 Hz, 1 H), 7.86 (d, 7=6.1 Hz, 1 H); MS: (M+Na)+ 738.
Example 293: Preparation of Compound 293
Compound 293 (7 mg, 35%) was prepared by following Scheme 3 of Example 289 by using 20 mg of compound 252.1R NMR (400 MHz, CD3OD) 5 ppm 1.04 (m, 15 H), 1.27 (m, 12 H), 1.58 (m, 3 H), 2.27 (m, 1 H), 2.60 (m, 4 H), 2.96 (m, 1 H), 4.07 (dd, 7=11.7, 2.9 Hz, 1 H), 4.25 (s, 1 H), 4.46 (d, 7=12.0 Hz, 1 H), 4.54 (dd, 7=10.0,
7.6 Hz, 1 H), 5.85 (s, 1 H), 7.39 (t, 7=7.7 Hz, 1 H), 7.44 (d, 7=5.9 Hz, 1 H), 7.53 (d, J=6.9 Hz, 1 H), 8.00 (d, 7=6.1 Hz, 1 H), 8.06 (d, 7=8.6 Hz, 1 H); MS: (M+H)+ 700.
Compound 294 (14 mg, 78 %) was prepared by following Scheme 3 of Example 289 by using 18 mg of compound 254. 'H NMR (400 MHz, CD3OD) 8 ppm 0.94 (m, 15 H), 1.13 (m, 10 H), 1.20 (m, 2 H), 1.50 (m, 3 H), 2.21 (m, 1 H), 2.53 (dd, 7=13.8, 7.0 Hz, 1 H), 2.88 (m, 1 H), 3.99 (dd, 7=11.4, 2.6 Hz, 1 H), 4.14 (d, 7=9.3 Hz, 1 HV 4.45 (m, 2 H), 5.79 (s, 1 H), 6.53 (d, 7=9.1 Hz, 1 H), 7.40 (t, 7=8.0 Hz, 1 H), 7.54 (d, 7=5.9 Hz, 1 H), 7.73 (d, 7=7.3 Hz, 1 H), 8.02 (d, 7=6.1 Hz, i H), 8.10 (d, 7=8.6 Hz, 1 H); MS: (M+Na)* 742.
Compound 295 (30 mg, 100%) was prepared by following Scheme 3 of Example 289 by using 30 mg of compound 270. MS: (M+Na)"1" 776.
Compound 296 (6.3 mg, 33%) was prepared by following Scheme 3 of Example 289 by using 20 mg of compound 259. ]H NMR (400 MHz, CD3OD) 6 ppm 1.04 (m, 15 H), 1.24 (m, 12 H), 1.59 (m, 3 H), 2.29 (m, 1 H), 2.50 (s, 3 H), 2.60 (dd, 7=13.69, 6.85 Hz, 1 H), 2.97 (m, 1 H), 4.09 (dd, 7=11.74,2.93 Hz, 1 H)4.22 (s, 1 H) 4.43 (d, 7=11.74 Hz, 1 H), 4.59 (dd, 7=10.27, 6.85 Hz, 1 H), 5.87 (s, 1 H), 7.30 (d, 7=5.87 Hz, 1 H), 7.57 (dd, 7=8.31,1.47 Hz, 1 H), 7.72 (d, 7=8.31 Hz, 1 H), 7.89 (d, 7=5.87 Hz, 1 H), 7.94 (s, 1 H); MS: (M+H)+ 700.
Example 297: Preparation of Compound 297
(Figure Removed) Compound 297 (40 mg, 100%) was prepared by following Scheme 3 of Example 289 by using 40 mg of compound 263. 'H NMR (400 MHz, CD3OD) 6 ppm 0.98 (m, 13 H) 1.07 (m, 2 H) 1.27 (m, 12 H) 1.57 (m, 3 H) 2.27 (m, 1 H) 2.58 (dd, 7=14.7, 7.1 Hz, 1 H) 2.77 (s, 3 H) 2.96 (m, 1 H) 4.04 (m, 1 H) 4.27 (m, 1 H) 4.42 (d, 7=11.5
Hz, 1 H) 4.55 (dd, 7=10.6, 7.0 Hz, 1 H) 5.94 (s, 1 H) 6.65 (d, 7=9.5 Hz, 1 H) 7.28 (m, 2 H) 7.50 (t, 7=7.6 Hz, 1 H) 7.60 (d, 7=7.6 Hz, 1 H) 7.89 (d, 7=5.6 Hz, 1 H); MS: (M+Na)+ 722.
Compound 298 (29 mg, 100%) was prepared by following Scheme 3 of Example 289 by using 29 mg of compound 261. !H NMR (400 MHz, CD3OD) 6 ppm 0.99 (m, 15 H), 1.25 (m, 12 H), 1.60 (m, 3 H), 2.28 (m, 1 H), 2.58 (m, 1 H), 2.96 (m, 1 H),
7=5.6 Hz, 1 H), 7.36 (d, 7=8.8 Hz, 1 H), 7.75 (d, 7=11.3 Hz, 1 H), 7.90 (d, 7=5.9 Hz, lH);MS:(M+Na)+756.
Compound 299 (34 mg, 97%) was prepared by following Scheme 3 of Example 289 by using 35 mg of compound 274. 'H NMR (400 MHz, CD3OD) 5 ppm 1.01 (m, 16 H), 1.28 (m, 12 H), 1.58 (m, 2 H), 2.27 (s, 1 H), 2.59 (dd, 7=13.82, 6.97 Hz, 1 H), 2.96 (m, 1 H), 4.02 (s, 3 H), 4.07 (m, 1 H), 4.21 (m, 1 H), 4.44 (m, 7=11.98 Hz, 1 H), 4.55 (d, 7=10.27 Hz, 1 H), 5.85 (s, 1 H), 7.39 (m, 2 H), 7.95 (d, 7=tf.l 1 Hz, 1 H), 8.00 (d, 7=9.29 Hz, 1 H); MS: (M+Na)* 756.
Compound 300 (30 mg, 100%) was prepared by following Scheme 3 of Example 289 by using 30 mg of compound 262. 'H NMR (400 MHz, CD3OD) 6 ppm 1.27 (m, 30 H), 2.25 (s, 1 H), 2.54 (s, 1 H), 2.96 (m, 1 H), 3.97 (s, 3 H), 4.20 (m, 3 H), 4.51 (m, 7=10.52,6.85 Hz, 1 H), 5.37 (s, 1 H), 7.38 (s, 1 H), 7.62 (s, 1 H), 7.65 (d, 7=5.38 Hz, 1 H) 8.06 (d, 7=5.62 Hz, 1 H); MS: (M+Na)+ 773.
Section G:
The LC/MS method used in section G is the following: 4.6X50mm Xterra @3min gradient and 4 mL/min flow
Scheme 1: (General Scheme)
Scheme 2: (General Scheme)
(Figure Removed)Compound 320 was prepared by following Scheme 1 and Scheme 3 of above. Step 1 (Scheme 1):
To a solution of N,N-Diethyl-4-methoxy-2-methyl-benzamide (332 mg, 1.5 mmol) in THF (15 mL) at -78°C, t-BuLi (1.7 M solution in pentane, 1.3 mL, 2.25 mmol) was added. The resulting red solution was stirred at -78°C for 10 min, then 2-cyanopyridine (156 mg, 1.5 mmol) was added. The reaction mixture was then warmed to rt and stirred for overnight. The reaction was quenched with saturated NHjCl solution and extracted with ethyl acetate twice. The combined organic layers were dried (MgSO4) and concentrated. The crude product was purified by Prep. HPLC to give yellowish solid as TFA salt. (85 mg, 15% yield) 'H NMR (400 MHz, CD3OD) 6 3.91 (m, 3 H), 7.09 (dd, 7=9.05, 2.45 Hz, 1 H), 7.17 (d, 7=2.45 Hz, 1 H), 7.37 (s, 1 H), 7.42 (m, 1 H), 7.92 (m, 1 H), 8.08 (d, 7=8.07 Hz, 1 H), 8.18 (d, 7=9.05 Hz, 1 H), 8.65 (d, 7=4.89 Hz, 1 H). LC-MS (retention time: 2.14 min.), MS m/z 253 (MH+).
6-Methoxy-3-pyridin-2-yl-2H-isoquinolin-l-one TFA salt (85 mg, 0.232 mmol) was heated under reflux with POC13 (3.0 mL) for 2 days. Then POC13 was distilled off and the residue was quenched with ice. It was then neutralized with 10 N NaOH solution and the brown solid was collected as pure product. (62 mg, 99% yield) LC-MS (retention time: 2.063 min.), MS m/z 271 (MH1").
Step 3 (Scheme 3, StepCompound 320
To a solution of {l-[2-(l-Cyclopropanesulfonylaminocarbonyl-2-vinyl-cyclopropyl-
carbamoyl)-4-hydroxy-pyrrolidine-l-carbonyl]-2,2-diniethyI-propyl}-carbamic acid
tert-butyl ester (82 mg, 0.148 mmol) and LaCl3 (36 mg, 0.148 mmol) in DMF (1.5
mL), potassium t-butoxide (1.0 M solution in THF, 0.74 mL, 0.74 mmol) was added
at -78°C. The reaction mixture was stirred for 1 hr, then l-chloro-6-methoxy-3-
pyridin-2-yl-isoquinoline (40 mg, 0.148 mmol) was added. It was warmed to rt and
stirred for overnight. Then it was quenched with water and filtered. The filtrated
was concentrated and the residue was purified by Prep. HPLC to give an off-white
solid as product (Compound 320). (23 mg, 20 % yield)
'HNMR (400 MHz, CD3OD) 8 0.87-1.08 (m, 11 H), 1.20-1.30 (m, 11 H), 1.43 (m, 1 H), 1.87 (m, 1 H), 2.22 (m, 1 H), 2.35 (m, 1 H), 2.69 (m, 1 H), 2.93 (m, 1 H), 3.94 (s, 3 H), 4.16 (m, 1 H), 4.27 (m, 1 H), 4.45 (m, 1 H), 4.56 (m, 1 H), 5.10 (d, 7=11.3 Hz, 1 H), 5.27 (d, J=15.9 Hz, 1 H), 5.74 (m, 1 H), 6.07 (s, 1 H), 7.12 (d, J=7.33 Hz, 1 H), 7.31 (d, 7=1.96 Hz, 1 H), 7.40 (m, 1'H), 7.94 (dd, J=7.8 Hz, 1.5 Hz, 1 H), 8.11 (d, 7=9.29 Hz, 1 H), 8.22 (s, 1 H), 8.45 (d, 7=8.07 Hz, 1 H), 8.62 (m, 1 H). LC-MS (retention time: 2.393min.), MS m/z 791 (MH*).
Condensation of ethyl bromopyruvate with ethyl thiourea in refluxing dioxane afforded the monoalkylamino thiazole as HBr salt in quantitative yield. Alkylation of 2-ethylamino-thiazole-4-carboxylic acid ethyl ester with Etl in DMF provided 2-diethylamino-thiazole-4-carboxylic acid ethyl ester.
LC/MS m/z 229 (MH)+
Compound 321 was prepared by following Scheme 2 and Scheme 3 above with that 2-diethylamino-thiazole-4-carboxylic acid ethyl ester was used in the step 1 of Scheme 2. LC/MS (Retention time 2.76 min): m/z 868 (MET).
Compound 322 was prepared by following Example 321, except that 2-dimethylamino-thiazole-4-carboxylic acid ethyl ester (Prepared according to Scheme 5, except that methyl thiourea and methyl iodide were used in the place of ethyl thiourea and ethyl iodide) was used in the place of 2-dimethylamino-thiazole-4-carboxylic acid ethyl ester in step 1 of Scheme 2. LC/MS (Retention time 2.56 min): m/z 840 (MIT)
mpound 323 was prepared by following Step 3 of Example 324, except that 3-chloro-6-methoxy-benzo[d]isoxazoIe was used in the place of l-chloro-6-methoxy-3-pyridin-2-yl-isoquinoline.
MS m/z 702 (M-H)'
Example 324: Preparation of Compound 324
Compound 324 was prepared by following Step 3 of Example 324, except that 3-
chloro-benzo[d]isothiazole was used in the place of l-chloro-6-methoxy-3-pyridin-2-
yl-isoquinoline.
LC/MS (Retention time 1.83 min): m/z 688 (M-H)"
(Figure Removed)MeOCompound 325
Compound 325 was prepared by following Scheme 1 and Scheme 3 of above. Step 1 (Scheme 1):
To a solution of N,N-Diethyl-4-methoxy-2-methyl-benzamide (332 mg, 1.5 mmol) in THF (15 mL) at -78°C, t-BuLi (1.7 M solution in pentane, 1.3 mL, 2.25 mmol) was added. The resulting red solution was stirred at -78°C for 10 min, then 4-cyanopyridine (164 mg, 1.575 mmol) was added. The reaction mixture was then warmed to rt and stirred for overnight. The reaction was quenched with saturated NH4C1 solution and the yellow precipitate was collected as pure product. (145 mg, 38% yield)
'H NMR(CD3OD, 400 MHz) 5 3.91 (s, 3 H), 7.18 (dd, 7=8.8 Hz, 2.8 Hz, 1 H), 7.26 (m, 2 H), 8.06 (d, 7=6.0 Hz, 2H), 8.16 (d, 7=8.8 Hz, 1H), 8.84 (d, 7=6.0 Hz, 2H). LC-MS (retention time: 1.300 min.), MS m/z 253 (MH+).
Step 2 (Scheme 3, step 1):
6-Methoxy-3-pyridin-4-yl-2H-isoquinolin-l-one (134 mg, 0.531 mmol) was heated
under reflux with POC13 (6.0 mL) for 5 days. Then POC13 was distilled off and the
residue was quenched with ice. It was then neutralized with saturated NaHCOa
solution and the brown solid was collected as pure product. (125 mg, 87% yield)
'H NMR(DMSO-d6, 400 MHz) S 3.99 (s, 3 H), 7.53 (dd, 7=9.04 Hz, 2.44 Hz, 1 H),
7.59 (d, 7=2.69 Hz, 1 H), 8.26 (d, 7=9.05 Hz, 1 H), 8.30 (d, 7=5.38 Hz, 2 H), 8.73 (s,
1 H), 8.85 (d, 7=6.36 Hz, 2 H).
LC-MS (retention time: 2.027 min.), MS m/z 271 (MH+).
Step 3 (Scheme 3, Step 2):
To a solution of {l-[2-(l-Cyclopropanesulfonylaminocarbonyl-2-vinyl-cyclopropyl-carbamoyl)-4-hydroxy-pyrrolidine-l-carbonyl]-2,2-dimethyl-propyl} -carbamic acid tert-butyl ester (83.5 mg, 0.15 mmol) and LaCl3 (36.8 mg, 0.15 mmol) in DMF (1.5 mL), potassium t-butoxide (1.0 M solution in THF, 0.75 mL, 0.75 mmol) was added at -78 °C. The reaction mixture was stirred for 1 hr , then l-chloro-6-methoxy-3-pyridin-4-yl-isoquinoline (40.6 mg, 0.15 mmol) was added. It was warmed to rt and stirred for overnight. Then it was quenched with water and filtered. The filtrated was concentrated and the residue was purified by Prep. HPLC to give an off-white sona as proauci (.compound o&3). u.o mg, 1.3 ~/o yieiu; 'H NMR (400 MHz, CD3OD) 8 0.90(m, 2 H), 1.02 (s, 9 H), 1.17-1.31 (m, 11 H), 1.42 (m, 1 H), 1.87 (m, 1 H), 2.23 (m, 1 H), 2.35 (m, 1 H), 2.68 (m, 1 H), 2.93 (m, 1 H), 3.95 (s, 3 H), 4.15 (m, 1 H), 4.25 (m, 1 H), 4.45 (m, 1 H), 4.56 (m, 1 H), 5.10 (d, .7=10.76 Hz, 1 H), 5.27 (d, J=17.61 Hz, 1 H), 5.74 (m, 1 H), 6.06 (s, 1 H), 7.14 (d, J=8.07 Hz, 1 H), 7.34 (s, 1 H), 8.01 (s, 1 H), 8.12 (d, 7=8.81 Hz, 1 H), 8.19(d, 7=6.12 Hz, 2 H), 8.61 (d, /=5.63 Hz, 2 H). LC-MS (retention time: 2.523min.), MS m/z 791 (MIT).
Compound 326 was prepared by following Scheme 1 and Scheme 4 of above. Step 1 (Scheme 1);
xy-2-methyl-benzarnide (332 mg, 1.5 mmol) in THF (15 mL) at -78°C, t-BuLi (1.7 M solution in pentane, 1.3 mL, 2.25 mmol) was added. The resulting red solution was stirred at -78°C for 10 min, then 4-dimethyiamino benzonitrile (219 mg, 1.5 mmol) was added. The reaction mixture was then warmed to rt and stirred for overnight. The reaction was quenched with saturated NHtCl solution and the yellow precipitate was collected and triturated with ether to give an off-white solid as pure product. (247 mg, 56% yield) 'H NMR(DMSO-d6, 400 MHz) 5 2.97 (s, 6 H), 3.87 (s, 3 H), 6.72 (s, 1 H), 6.78 (d, 7=8.80 Hz, 2 H), 6.97 (dd, 7=8.80, 2.45 Hz, 1 H), 7.10 (d, 7=2.45 Hz, 1 H), 7.65 (d, 7=8.80 Hz, 2 H), 8.05 (d, 7=8.80 Hz, 1 H), 11.11 (s, 1 H). LC-MS (retention time: 2.023 min.), MS m/z 295 (MH").
Step 2 (Scheme 4, Step 1):
3-(4-Dimethylamino-phenyl)-6-methoxy-2H-isoquinolin-l-one (245 mg, 0.83 mmol)
was heated under reflux with POC13 (10.0 mL) for 2 days. Then POC13 was distilled
off and the residue was quenched with ice. It was then neutralized with 10 N NaOH
solution and extracted with ethyl acetate twice. The organic layers were combined
and dried (MgSO4). Evaporation of solvent gave an orange solid as product (215
mg, 83% yield)
'H NMR (400 MHz, CD3OD) 5 3.01 (s, 6 H), 3.96 (s, 3 H), 6.88 (d, 7=9.05 Hz, 2 H),
7.20 (dd, 7=9.17,2.57 Hz, 1 H), 7.28 (d, 7=2.45 Hz, 1 H), 7.94 (s, 1 H), 7.96 (d,
7=9.05 Hz, 2 H), 8.13 (d, 7=9.29 Hz, 1 H).
LC-MS (retention time: 2.543 min.), MS m/z 313 (MH").
Step 3 (Scheme 4, Step 2):
A mixture of [4-(l-Chloro-6-methoxy-isoquinolin-3-yl)-phenyl]-dimethyl-amine (110 mg, 0.35 mmol) and tetrabutyl phosphonium hydrogen difluoride (0.5 g) was heated at 140°C in Smith microwave reactor for 20 min. Then it was added water and extracted with ethyl acetate. The organic layer was separated, washed with water and dried (MgSO,*). Evaporation of solvent gave a brownish solid as product. (85 mg, 82% yield) LC-MS (retention time: 2.320 min.), MS m/z 297 (MHT).To a solution of {l-[2-(l-Cydopropanesulfonylaminocarbonyl-2-vinyl-cyclopropyl-
carbamoyl)-4-hydroxy-pyrrolidine-l-carbonyl]-2,2-dimethyI-propyl}-carbamic acid
tert-butyl ester (111 mg, 0.2 mmol) and LaCl3 (49 mg, 0.2 mmol) in DMF (2.0 mL),
potassium t-butoxide (1.0 M solution in THF, 1.0 mL, 1.0 mmol) was added at -78
°C. The reaction mixture was stirred for 1 hr, then [4-(l-fluoro-6-methoxy-
isoquinolin-3-yI)-phenyl]-dimethyIamine (59 mg, 0.2 mmol) was added. It was
warmed to it and stirred for overnight. Then it was quenched with water and filtered.
The filtrated was concentrated and the residue was purified by Prep. HPLC to give
yellowish solid as product (Compound 326). (17.5 mg, 11 % yield) 'H NMR (400 MHz, CD3OD) 5 0.97-1.08 (m, 11 H), 1.23 (m, 2 H), 1.31 (s, 9 H), 1.44 (m, 1 H), 1.87 (m, 1 H), 2.22 (m, 1 H), 2.34 (m, 1 H), 2.68 (m, 1 H), 2.93 (m, 1 H), 2.99 (m, 6 H), 3.91 (s, 3 H), 4.17 (m, 1 H), 4.29 (m, 1 H), 4.39 (m, 1 H), 4.52 (m, 1 H), 5.10 (d, 7=10.76 Hz, 1 H), 5.27 (d, .7=17.11 Hz, 1 H), 5.74 (m, 1 H), 6.03 (s, 1 H), 6.83 (m, 2 H), 6.95 (m, 1 H), 7.16 (s, 1 H), 7.59 (s, 1H), 8.01 (m, 3 H). LC-MS (retention time: 2.850 min.), MS m/z 834 (MH*).
(Figure Removed)Compound 327 was prepared by following Scheme 1 and Scheme 4 of above. Step 1 (Scheme 1);
To a solution of N,N-Diethyl-4-methoxy-2-methyl-benzamide (332 mg, 1.5 mmol) in THF (15 mL) at -78°C, t-BuLi (1.7 M solution in pentane, 1.3 mL, 2.25 mmol) was added. The resulting red solution was stirred at -78°C for 10 min, then 4-diethylamino benzonitrile (261 mg, 1.5 mmol) was added. The reaction mixture was then warmed to it and stirred for overnight. The reaction was quenched with saturated NHtCl solution and the yellow precipitate was collected as pure product. (215 mg, 44% yield)
'H NMR(400 MHz, DMSO-d6) 6 1.12 (m, 6 H), 3.39 (m, 4H), 3.87 (s, 3 H), 6.69 (s, 1 H), 6.72 (d, 7=9.05 Hz, 2 H), 6.96 (dd, 7=8.80,2.45 Hz, 1 H), 7.09 (d, 7=2.45 Hz, 1 H), 7.61 (d, 7=9.05 Hz, 2 H), 8.04 (d, 7=8.80 Hz, 1 H), 11.06 (s, 1 H). LC-MS (retention time: 1.883 min.), MS m/z 323 (MH*).
3-(4-Diethylamino-phenyl)-6-methoxy-2-isoqunoIin-l-one (207 mg, 0.642 rnmol) was heated under reflux with POC13 (8.0 mL) for one day. Then POC13 was distilled off and the residue was quenched with ice. It was then neutralized with saturated NaHCO3 solution and extracted with ethyl acetate twice. The organic layers were combined and dried (MgSO4). Evaporation of solvent gave a brownish solid as product. (180 mg, 82% yield) LC-MS (retention time: 2.397 min.), MS m/z 341 (MlT).
Step 3 (Scheme 4, Step 2):
A mixture of [4-(l-Chloro-6-methoxy-isoquinolin-3-yl)-phenyl]-diethylamine (90
mg, 0.264 mmol) and tetrabutyl phosphonium hydrogen difluoride (0.5 g) was heated
at 140 °C in Smith microwave reactor for 20 min. Then it was added water and
extracted with ethyl acetate. The organic layer was separated, washed with water and
dried (MgSO4). Evaporation of solvent gave a yellowish oil as product. (70 mg, 82%
yield)
LC-MS (retention time: 2.253 min.), MS m/z 325 (MIT1).
Step 4 (Scheme 4, Step 3):
CT-2723-PCTTo a solution of {l-[2-(l-Cyclopropanesulfonylaminocarbonyl-2-vinyl-cyclopropyl-carbamoyl)-4-hydroxy-pyrrolidine-l-carbonyl]-2,2-dimethyl-propyl} -carbamic acid
tert-butyl ester (100 mg, 0.18 mmol) and LaCl3 (66 mg, 0.27 mmol) in DMF (2.0
mL), potassium t-butoxide (1.0 M solution in THF, 0.9 mL, 0.9 mmol) was added at -
78°C. The reaction mixture was stirred for 1 hr, then [4-(l-Fluoro-6-methoxy-
isoquinolin-3-yl)-phenyl]-diethylamine (70 mg, 0.216 mmol) was added. It was
wanned to rt and stirred for overnight. Then it was quenched with water and filtered.
me nitrated was concentrated ana me residue was punned oy rrep. jtmju 10 give
white solid as product (Compound 327). (18 mg, 12 % yield) 'HNMR (400 MHz, CD3OD) 6 0.95-1.07 (m, IIH), 1.18(m,6H), 1.25-1.38 (m, 11 H), 1.58 (m, 1 H), 1.85 (m, 1 H), 2.19 (m, 1 H), 2.34 (m, 1 H), 2.68 (m, 1 H), 2.92 (m, 1 H), 3.42 (m, 4 H), 3.90 (s, 3 H), 4.16 (m, 1 H), 4.28 (m, 1 H), 4.37 (m, 1 H), 4.53 (m, 1 H), 5.07 (d, 7=11.0 Hz, 1 H), 5.25 (d, J=17.36 Hz, 1 H), 5.74 (m, 1 H), 5.99 (s, 1 H), 6.77 (d, J=8.8 Hz, 2 H), 6.94 (d, J=9.05 Hz, 1 H), 7.14 (s, 1 H), 7.56 (s, 1H), 7.95-8.02 (m, 3 H). LC-MS (retention time: 2.690 min.), MS m/z 862(MJT).
Compound 328
Compound 328 was prepared by following Scheme 2 and Scheme 3 of above. Step 1 (Scheme 2, Step 1):
To a solution of N,N-Diethyl-4-methoxy-2-methyl-benzamide (332 mg, 1.5 mmol) in THF (15 mL) at -78°C, t-BuLi (1.7 M solution in pentane, 2.12 mL, 3.6 mmol) was added. The resulting red solution was stirred at -78°C for 10 min, then methyl nicotinate (206 mg, 1.5 mmol) was added. The reaction mixture was stirred at —78°C for 2h. Then the reaction was quenched with saturated NHUCl solution and extracted with ethyl acetate twice. The combined organic layers were dried (MgSC>4) and concentrated. The crude product was purified by Prep. HPLC to give yellowish thick oil as TFA salt. (124 mg, 19% yield) LC-MS (retention time: 1.740 min.), MS m/z 349 (M+Na+).
Step 2 (Scheme 2. Step 2):
N,N-Diethyl-4-methoxy-2-(2-oxo-2-pyridin-3-yl-ethyl)-benzamide (120 mg, 0.272 mmol) was heated with ammonium acetate (1 g) for 3 hr. Then it was cooled down and added water. Extracted with ethyl acetate and the organic layer was separated. It was then dried (MgSO4) and concentrated to give a brownish solid as product. (65 mg, 95% yield)
'H NMR (400 MHz, DMSO-d6) 5 3.89 (s, 3 H), 6.93 (s, 1 H), 7.10 (dd, 7=8.80,2.45 Hz, I H), 7.19 (d, 7=2.45 Hz, 1 H), 7.52 (dd, 7=7.46,4.77 Hz, 1 H), 8.15 (m, 2 H), 8.64 (dd, 7=4.89,1.47 Hz, 1 H), 8.96 (d, 7=1.71 Hz, 1 H), 11.51 (s, 1 H). LC-MS (retention time: 1.377 min.), MS m/z 253 (MH*). Step 3 (Scheme 3. Step 1);
6-Methoxy-3-pyridin-3-yl-2H-isoquinolin-l-one (65 mg, 0.258 mmol) was heated under reflux with POC13 (2.5 mL) for 7 days. Then POC13 was distilled off and the residue was quenched with ice. It was then neutralized with 10 N NaOH solution and extracted with ethyl acetate twice. The combined organic layers were dried (MgSO4) and concentrated to give yellow solid as product. (27 mg, 39% yield) LC-MS (retention time: 2.090 min.), MS m/z 271 (MH4). Step 4 (Scheme 3. Step 2);
To a solution of {l-[2-(l-Cyclopropanesulfonylaminocarbonyl-2-vinyl-cyclopropylcarbamoyl)-4-hydroxy-pyrrolidine-l-carbonyl]-2,2-dimethyl-propyl}-carbamic acid tert-butyl ester (56 mg, 0.10 mmol) and LaCla (25 mg, 0.10 mmol) in DMF (1.5 mL), potassium t-butoxide (1.0 M solution in THF, 0.5 mL, 0.5 mmol) was added at -78 °C. The reaction mixture was stirred for 1 hr , then l-chloro-6-methoxy-3-pyridin-3-yl-isoquinoline (27 mg, 0.10 mmol) was added. It was wanned to rt and stirred for overnight. Then it was quenched with water and filtered. The filtrated was concentrated and the residue was purified by Prep. HPLC to give white solid as product (Compound 328). (17 mg, 21 % yield)
'H NMR (400 MHz, CD3OD) 5 0.95 (m, 2 H), 1.02 (s, 9 H), 1.20-1.30 (m, 11 H), 1.41 (m, 1 H), 1.86 (m, 1 H), 2.21 (m, 1 H), 2.35 (m, 1 H), 2.67 (m, 1 H), 2.93 (m, 1 H), 3.93 (s, 3 H), 4.14 (m, 1 H), 4.26 (m, 1 H), 4.47 (d, 7=11.99 Hz, 1 H), 4.55 (m, 1 H), 5.09 (d, 7=10.02 Hz, 1 H), 5.26 (d, J=17.85 Hz, 1 H), 5.74 (m, 1 H), 6.07 (s, 1 H), 7.09 (m, 1 H), 7.29 (d, 7=1.96 Hz, 1 H), 7.53 (m, 1 H), 7.86 (s, 1 H), 8.09 (d, 7=9.05 Hz, 1 H), 8.50-8.58 (m, 2 H), 9.28 (s, 1 H). LC-MS (retention time: 2.453 min.), MS m/z 791 (MH*). Example 329: Preparation of Compound 329
Compound 329
Compound 329 was prepared by following Scheme 2 and Scheme 4 of above. Step 1 (Scheme 2. Step 1):
10 a solution or iN,iN-i>>ietnyi-^~meinoxy-z-m(Figure Removed)einyi-Denzamme poz mg, 10 mmoij in THF (15 mL) at -78°C, t-BuLi (1.7 M solution in pentane, 2.2 mL, 3.75 mmol) was added. The resulting red solution was stirred at -78°C for 10 min, then N,N-dimethylanthranilic acid methyl ester (269 mg, 1.5 mmol) was added. The reaction mixture was stirred at -78°C for 2h. Then the reaction was quenched with saturated NHjCl solution and extracted with ethyl acetate twice. The combined organic layers were dried (MgSO4) and concentrated. The crude product was purified by Prep. HPLC to give yellowish thick oil as product. (256 mg, 46% yield) 'H NMR (400 MHz, CD3OD) 6 0.99-1.13 (m, 6 H), 3.23-3.31 (m, 8 H), 3.39 (m, 2 H), 3.82 (s, 3 H), 4.35 (s, 2 H), 6.91 (dd, 7=8.44,2.57 Hz, 1 H), 6.99 (d, 7=2.45 Hz, 1 H), 7.22 (d, 7=8.56 Hz, 1 H), 7.69 (t, 7=7.70 Hz, 1 H), 7.84 (m, 1 H), 7.96 (d, 7=8.31 Hz, 1 H), 8.18 (d, 7=7.83 Hz, 1 H). LC-MS (retention time: 1.557min.), MS m/z 369(MH+).
2-[2-(2-Dimethylamino-phenyl)-2-oxo-ethyl]-N,N-diethyl-4-methoxy-benzamide
(250 mg, 0.678 mmol) was heated with ammonium acetate (1.5 g) for 2 hr. Then it
was cooled down and added water. Extracted with ethyl acetate and the organic layer
was separated. It was then dried (MgSO4) and concentrated to give a yellowish solid
as product. (125 mg, 63% yield)
'H NMR (400 MHz, CD3OD) 5 2.95 (s, 6 H), 3.92 (s, 3 H), 6.92 (s, 1 H), 7.12 (dd,
7=8.80, 2.45 Hz, 1 H), 7.16 (d, 7=2.45 Hz, 1 H), 7.35 (m, 1 H), 7.55 (m, 2H), 7.63
(d, 7=7.83 Hz, 1 H), 8.20 (d, 7=9.05 Hz, 1 H).
LC-MS (retention time: 2.097 min.), MS m/z 295 (MlT).
Step 3 (Scheme 4. Step 1);
3-(2-Dimethylamino-phenyl)-6-methoxy-2H-isoquinolin-l-one (125 mg, 0.425 mmol) was heated under reflux with POCb (4.0 mL) for one day. Then POC13 was distilled off and the residue was quenched with ice. It was then neutralized with 10 N NaOH solution and extracted with ethyl acetate twice. The organic layers were combined and dried (MgSO4). Evaporation of solvent gave a brownish solid as product (82 mg, 62% yield) LC-MS (retention time: 2.040 min.), MS m/z 313 (MH*).
A mixture of [2-(l-Chloro-6-methoxy-isoquinolin-3-yl)-phenyl]-dimethyl-amine (82 mg, 0.262 mmol) and tetrabutyl phosphonium hydrogen difluoride (1.0 g) was heated at 140°C in Smith microwave reactor for 20 min. Then it was added water and extracted with ethyl acetate. The organic layer was separated, washed with water and dried (MgSO*). Evaporation of solvent gave the crude product which was purified by Prep. HPLC to afford a yellowish oil as product. (85 mg) 'H NMR (400 MHz, CD3OD) 5 3.41 (s, 6 H), 4.00 (s, 3 H), 7.42 (dd, 7=9.05,2.45 Hz, 1 H), 7.53 (s, 1 H), 7.71 (m, 2 H), 7.99 (m, 1 H), 8.16 (m, 2 H), 8.31 (s, 1 H). LC-MS (retention time: 1.873 min.), MS m/z 297 (MH4).
To a solution of {l-[2-(l-Cyclopropanesulfonylaminocarbonyl-2-vinyl-cyclopropyl-
carbamoyl)-4-hydroxy-pyrrolidine-l-carbonyl]-2,2-dimethyl-propyl} -carbamic acid
tert-butyl ester (56 mg, 0.1 mmol) and LaCl3 (25 mg, 0.1 mmol) in DMF (1.0 mL),
potassium t-butoxide (1.0 M solution in THF, 0.5 mL, 0.5 mmol) was added at -
78°C. The reaction mixture was stirred for 1 hr, then [2-(l-Fluoro-6-methoxy-
isoquinolin-3-yl)-phenyl]-dimethyl-amine (30 mg, 0.1 mmol) was added. It was
warmed to it and stirred for overnight. Then it was quenched with water and filtered.
The filtrated was concentrated and the residue was purified by Prep. HPLC to give
white solid as product (Compound 329). (4.0 mg, 5 % yield) 'HNMR (400 MHz, CD3OD) 8 0.98-1.08 (m, 11 H), 1.16-1.32 (m, 11 H), 1.40 (m, 1 H), 1.85 (m, 1 H), 2.16- 2.32 (m, 2 H), 2.60-2.71 (m, 7 H), 2.92 (m, 1 H),3.91 (s, 3 H), 4.08 (m, 1 H), 4.26 (m, 1 H), 4.45 (m, 1 H), 4.55 (m, 1 H), 5.10 (d.MO.27 Hz, 1 H), 5.28 (d, .7=18.09 Hz, 1 H), 5.74 (m, 1 H), 5.89 (s, 1 H), 7.05 (d, 7=6.85 Hz, 1 H), 7.10-7.20 (m, 2 H), 7.29 (m, 1 H), 7.63 (d, 7=7.58 Hz, 1H), 7.78 (s, 1H), 8.07 (d, 7=8.56 Hz, 1H). LC-MS (retention time: 2.550 min.), MS m/z 834 (MET).
Compound 330 was prepared by following Scheme 2 and Scheme 4 of above. Step 1 (Scheme 2. Step 1):
To a solution of N,N-Diethyl-4-methoxy-2-methyl-benzamide (332 mg, 1.5 mmol) in THF (15 mL) at -78°C, t-BuLi (1.7 M solution in pentane, 2.2 mL, 3.75 mmol) was
added. The resulting red solution was stirred at-78°C for 10 min, then (3-dimethylamino)benzoic acid methyl ester (269 mg, 1.5 mmol) was added. The reaction mixture was stirred at -78°C for 2h. Then the reaction was quenched with saturated NHUC1 solution and extracted with ethyl acetate twice. The combined organic layers were dried (MgSC>4) and concentrated. The crude product was purified by Prep. HPLC to give yellowish thick oil as TFA salt. (245 mg, 33% yield) 1H NMR (400 MHz, CD3OD) 5 1.01 (t, 7=6.85 Hz, 3 H), 1.09 (m, 3 H), 3.11 (s, 6H), 3.21 (m, 2 H), 3.40 (m, 2 H), 3.79 (s, 3 H), 4.39 (s, 2 H), 6.84-6.91 (m, 2 H), 7.19 (d, 7=8.32 Hz, 1 H), 7.35 (m, 1 H), 7.49 (t, 7=8.07 Hz, 1 H), 7.66-7.71 (m, 2 H). LC-MS (retention time: 1.930 min.), MS m/z 369(MHT).
Step 2 (Scheme 2. Step 2);
2-[2-(3-Dimethylamino-nhenyl)-2-oxo-ethyl]-NTN-diethyl-4-methoxy-benzamide
(240 mg, 0.497 mmol) was heated with ammonium acetate (2.0 g) for 2.5 hr. Then it
was cooled down and added water. A brownish solid was collected as pure product.
(95 mg, 65% yield)
1H NMR (400 MHz, CD3OD) 8 2.98 (s, 6 H), 3.88 (s, 3 H), 6.74-6.87 (m, 2 H), 7.01-
7.07 (m, 3 H), 7.18 (d, 7=2.44 Hz, 1 H), 7.28 (t, 7=7.82 Hz, 1 H), 8.10 (d, 7=8.80 Hz,
1H).
LC-MS (retention time: 1.773 min.), MS m/z 295 (MH1").
Step 3 (Scheme 4. Step 1):
3-(3-Dimethylamino-phenyl)-6-methoxy-2H-isoquinolin-l-one (92 mg, 0.312 mmol) was heated under reflux with POC13 (3.0 mL) for 2 days. Then POC13 was distilled off and the residue was quenched with ice. It was then neutralized with saturated NaHCOs solution and extracted with ethyl acetate twice. The organic layers were combined and dried (MgSO4). Evaporation of solvent gave a brownish thick oil as product. (72 mg, 74% yield) LC-MS (retention time: 2.297 min.), MS m/z 313 (MH*).
A mixture of [3-(l-Chloro-6-methoxy-isoquinolin-3-yl)-phenyl]-dimethylamine (72 mg, 0.23 mmol) and tetrabutyl phosphonium hydrogen difluoride (0.5 g) was heated at 140°C in Smith microwave reactor for 20 min. Then it was added water and extracted with ethyl acetate. The organic layer was separated, washed with water and dried (MgSCU). Evaporation of solvent gave a brownish oil as product. (58 mg, 85% yield) LC-MS (retention time: 2.193 min.), MS m/z 297 (MR*).
To a solution of {l-[2-(l-Cyclopropanesulfonylaminocarbonyl-2-vinyl-cyclopropyl-
carbamoyl)-4-hydroxy-pyrrolidine-l-carbonyl]-2,2-dimethyl-propyl } -carbamic acid
tert-butyl ester (86 mg, 0.155 mmol) and LaCl3 (57 mg, 0.233 mmol) in DMF (1 .5
mL), potassium t-butoxide (1.0 M solution in THF, 0.5 mL, 0.5 mmol) was added at
-78°C. The reaction mixture was stirred for 1 hr , then [3-(l-Fluoro-6-methoxy-
isoquinolin-3-yl)-phenyl]-dimethylamine (55 mg, 0.185 mmol) was added. It was
warmed to it and stirred for overnight. Then it was quenched with water and filtered.
The filtrated was concentrated and the residue was purified by Prep. HPLC to give an
off-white solid as product (Compound 330). (8.0 mg, 6 % yield) 'H NMR (400 MHz, CD3OD) 6 0.99-1.09 (m, 11 H), 1.23 (m, 2 H), 1.29 (s, 9 H), 1.42 (m, 1 H), 1.86 (m, 1 H), 2.21 (m, 1 H), 2.33 (m, 1 H), 2.70 (m, 1 H), 2.93 (m, 1 H), 3.00 (s, 6 H), 3.92 (s, 3 H), 4.14 (m, 1 H), 4.29 (m, 1 H), 4.44-4.57 (m, 2 H), 5.10 (d, 7=1 1 .00 Hz, 1 H), 5.27 (d, 7=16.87 Hz, 1 H), 5.74 (m, 1 H), 6.01 (s, 1 H), 6.63 (d, 7=8.80 Hz, 1 H), 7.03 (d, 7=6.85 Hz, 1 H), 7.24 (s, 1 H), 7.28 (t, 7=8.07 Hz, 1 H), 7.45 (d, 7=7.82 Hz, 1 H), 7.59 (s, 1 H), 7.72 (s, 1 H), 8.05 (d, 7=8.80 Hz, 1 H). LC-MS (retention time: 2.707 min.), MS m/z 834 (MH*).
was prepared in the following manner:
Stepl:
To a solution of Boc-cis-HYP-OMe (122.6 mg, 0.5 mmol) in THF (15 mL) at 0°C, triphenylphosphine (196.7 mg, 0.75 mmol) and benzo[d]isoxazol-3-ol (81 mg, 0.6 mmol) were added. Then DEAD (0.118 mL, 0.75 mmol) was added. The reaction mixture was wanned to it. and stirred for 3 hr. Then solvent was evaporated and the residue was purified by Prep. HPLC to give a colorless thick oil. (117 mg, 54% yield) 'H NMR (400 MHz, CD3OD) 6 1.41 (m, 9 H), 2.38 (m, 1 H), 2.75 (m, 1 H), 3.75 (m, 3 H), 3.81 (m, 1 H), 3.90 (m, 1 H), 4.47 (m, 1 H), 5.44 (m, 1 H), 7.31 (t, 7=7.46 Hz, 1 H), 7.47 (d, 7=8.56 Hz, 1 H), 7.59 (t, 7=7.83 Hz, 1 H), 7.66 (d, 7=8.07 Hz, 1 H). LC-MS (retention time: 2.65 min.), MS m/z 363(MHf). Some of the coupling product (85 mg, 0.235 mmol) was then dissolved in 4N HC1 in
i
dioxane (1.5mL) and stirred for 3 hr. Evaporation of solvent gave a yellowing oil as HCI salt. (85 mg, >100% yield)
LC-MS (retention time: 1.327 min.), MS m/z 263(MtT). Step
To a solution of 4-(Benzo[d]isoxazoI-3-yloxy)-pyrrolidine-2-carboxylic acid methyl ester hydrochloride salt (85 mg, 0.285 mmol) in CH3CN (10 mL) was added N-boc-L-t-leucine (99 mg, 0.427 mmol), DIEA (0.25 mL, 1.425 mmol) and the coupling reagent HOBt (65 mg, 0.427 mmol) and HBTU (162 mg, 0.427 mmol). The solution was stirred at rt. overnight. Then it was concentrated, washed with water and extracted with ethvl acetate twice. The combined organic layers were washed with brine, dried over MgSO4 and_concentrated. it was then purified by Prep. HPLC column to give a colorless thick oil as product. (63 mg, 46% yield)
1H NMR (400 MHz, CD3OD) 8 1.01 (s, 9 H), 1.17 (s, 9 H), 2.34 (m, 1 H), 2.78 (dd, 7=14.13, 7.83 Hz, 1 H), 3.72 (s, 3 H), 4.00 (dd, 7=12.22, 3.42 Hz, 1 H), 4.19 (s, 1 H), 4.57(d, 7=12.23 Hz, 1 H), 4.68 (m, 1 H), 5.51 (m, 1 H), 7.27 (m, 1 H), 7.47 (d, 7=8.56 Hz, 1 H), 7.57 (m, 1H), 7.63 (d, 7=8.07 Hz, 1 H). LC-MS (retention time: 2.737 min.), MS m/z 498 (M+Na+).
Step 3:
Compound 334
To a solution of 4-(Benzo[d]isoxazoI-3-yloxy)-l-(2-tert-butoxycarbonylamino-3,3-dimethyI-butyryI)-pyrrolidine-2-carboxyIic acid methyl ester (63 mg, 0.132 mmol) in THF (3.5 mL), methanol (2.0 mL) and water (0.5 mL) mixture, lithium hydroxide monohydrate (83 mg, 1.89 mmol) was added. The reaction mixture was stirred at rt. for overnight. Then it was acidified with IN HC1 solution to pH=3 to 5 and concentrated. Extracted with ethyl acetate (2x30 mL) and the organic layers were combined and dried (MgSO4). Evaporation of solvent gave a yellowish oil to carry on. (61 mg, 100 % yield)
To a solution of above compound (61 mg, 0.132 mmol) in CHsCN (8 mL) was added (1R, 2S) (l-cyclopropanesulfonyl-aminocarbonyl-2-vinyl-cyclo-propyl)-carbamic acid hydrochloride (42 mg, 0.158 mmol), DIEA (0.115 mL, 0.66 mmol) and the coupling reagent HOBt (30 mg, 0.198 mmol) and HBTU (75 mg, 0.198 mmol). The solution was stirred at rt. overnight. Then it was concentrated, washed with water and extracted with ethyl acetate twice. The combined organic layers were washed with brine, dried over MgSO* and concentrated. It was then purified by Prep. HPLC column to give a yellow film as final product (Compound 334). (24 mg, 27% yield) •1H NMR (400 MHz, CD3OD) 5 1.01 (s, 9 H), 1.05 (m, 2 H), 1.12-1.26 (m, 11 H), 1.43 (m, 1 H), 1.86 (dd, 7=8.07,5.38 Hz, 1 H), 2.17-2.33 (m, 2 H), 2.67 (dd, 7=12.96, 5.87 Hz, 1H), 2.93 (m, 1 H), 4.05 (m, 1 H), 4.22 (m, 1 H), 4.49 (m, 2 H), 5.11 (d, J=10.21Hz, 1 H), 5.29 (d, 7=17.12 Hz, 1 H), 5.55 (s, 1H), 5.74 (m, 1 H), 7.29 (m, 1 H), 7.48 (d, 7=8.32 Hz, 1H), 7.54-7.64 (m, 2 H). LC-MS (retention time: 2.767 min.), MS m/z 696 (M+Na+).
Step 1: (Scheme 1, step 1)
To a solution of (2S, 4R) 4-hydroxy-pyrrolidine-l,2-dicarboxylic acid 1-tert-butyl
ester (0.25 g, 1.08 mmol) in CH3CN (10 mL) was added (1R, 2S) (1-
cyclopropanesulfonyl-aminocarbonyl-2-vinyl-cyclo-propyl)-carbamic acid
hydrochloride (0.346 g, 1.30 mmol), DffiA (0.94 mL, 5.41 mmol) and the coupling reagent HOBt (0.248 g, 1.62 mmol) and HBTU (0.615 mg, 1.62 mmol). The solution was stirred at it. overnight. Then it was concentrated, washed with water and extracted with ethyl acetate twice. The combined organic layers were washed with brine, dried over MgSC>4 and concentrated to give yellow oil. It was purified by Prep. HPLC column to give a colorless thick oil which was then dissolved in 4N HC1 in dioxane (5 mL). The reaction mixture was stirred at rt. for overnight. Evaporation of solvent gave white solid as product to carry on. (200 mg, 49% yield) LC-MS (retention time: 0.647 min.), MS m/z 344 (MIT").
Step 2: (Scheme 1, step 2)
To a solution of above compound (200 mg, 0.527 mmol) in CHsCN (10 mL) was added 2-methoxycarbonylamino-3,3-dimethyl-butyric acid (0.15 g, 0.79 mmol), DEEA (0.46 mL, 2.63 mmol) and the coupling reagent HOBt (0.121 g, 0.79 mmol) and HBTU (0.30 g, 0.79 mmol). The solution was stirred at rt. overnight. Then it was concentrated, washed with water and extracted with ethyl acetate twice. The combined organic layers were washed with brine, dried over MgSO4 and
concentrated to give yellowish oil. It was purified by Prep. HPLC column to give
white solid as final product (intermediate 2). (145 mg, 54% yield)
'H NMR(CD3OD, 500 MHz) 8 0.99-1.10 (m, 11 H), 1.24(m, 2 H), 1.41 (dd, 7=9.5,
5.5 Hz, 1 H), 1.87 (dd, 7=7.9, 5.5 Hz, 1 H), 1.97 (m, 1 H), 2.13 (m, 1 H), 2.24 (m, 1
H), 2.93 (m, 1 H), 3.65 (s, 3 H), 3.77-3.88 (m, 2 H), 4.33-4.39 (m, 2 H), 4.49 (m, br,
1 H), 5.13(d, 7=10.4 Hz, 1 H), 5.31 (d, 7=17.1 Hz, 1 H), 5.76 (m, 1 H).
LC-MS (retention time: 1.590 min.), MS m/z 515 (MET).
Step 3: (Scheme 2)
To a solution of 2,4-dichloropyrimidine (149 mg, 1 mmol) in THF (5 mL), tetrakis(triphenylphosphine) palladium (23 mg, 2 mol%) and 0.5M solution of phenylzinc bromide (2.1 mL, 1.05 mmol) in THF were added. The reaction mixture was stirred at 50°C for overnight. Then it was added saturated ammonium chloride solution and extracted with EtOAc twice. The organic layers were combined, washed with water and dried (MgSO4). Evaporation of solvent gave a yellow residue which was purified by Prep. HPLC to afford a yellowish oil as 2-chloro-4-phenyl-pyrimidine to carry on.
To a solution of intermediate 2 (20 mg, 0.039 mmol) in DMF (3 mL), NaH (3.9 ing of 60% dispersion in mineral oil, 0.0975 mmol) was added at 0°C. The reaction mixture was then warmed to it. and stirred for 1 hr. Then 2-chloro-4-phenyl-pyrimidine prepared above (18 mg as crude) was added. The reaction mixture was stirred at rt. for overnight. It was then quenched with water and extracted with EtOAc. The organic layer was separated, washed with brine and dried (MgSC^). Evaporation of solvent gave yellowish oil which was then purified by Prep. HPLC to give a thick colorless oil as final product (Compound 335) as TFA salt.(5.5 mg, 18% yield)
'H NMR(CD3OD, 300 MHz) 5 0.92-1.12 (m, 11 H). 1.25 (m, 2 H), 1.44 (dd, 7=9.2, 5.5 Hz, 1 H), 1.89 (dd, 7=8.1, 5.5 Hz, 1H), 2.17-2.37 (m, 2 H), 2.57 (m, 1 H), 2.95 (m, 1 H), 3.52 (s, 3 H), 4.14 (m, 1 H), 4.24-4.38 (m, 2 H), 4.51 (m, 1 H), 5.13 (d, 7=10.2 Hz, 1 H), 5.31 (d, 7=17.2 Hz, 1 H), 5.77 (m, 1 H), 5.86 (s, 1 H), 7.48-7.60 (m, 3 H), 7.66 (d, 7=5.3 Hz, 1 H), 8.18 (m, 2 H), 8.60 (d, 7=5.1 Hz, 1 H). LC-MS (retention time: 1.947 min.), MS m/z 669 (MH+).
(Figure Removed)
To a solution of 2,4-dichloropyrimidine (149 mg, 1 mmol) in THF (5 mL), tetrakis(triphenylphosphine) palladium (58 mg, 5 mol%) and 0.5M solution of 2-pyridinylzinc bromide (2.4 mL, 1.2 mmol) in THF were added. The reaction mixture was stirred at 50°C for overnight. Then it was added saturated ammonium chloride solution and extracted with EtOAc twice. The organic layers were combined, washed with water and dried (MgSC^). Evaporation of solvent gave a yellow residue which was purified by Prep. HPLC to afford a yellowish oil as product. (11 mg, 3.6 % yield)
'H NMR (500 MHz, CD3OD) 5 7.61 (m, 1 H), 8.07 (m, 1 H), 8.36 (d, 7=5.19 Hz, 1 H), 8.50 (d, 7=7.94 Hz, 1 H), 8.75 (d, /=3.97 Hz, 1 H), 8.82 (d, /=5.19 Hz, 1 H). LC-MS (retention time: 1.440 min.), MS m/z 192 (MH*).
Step Z:
To a solution of intermediate 2 from Example 335 (15 mg, 0.029 mmol) in DMF (3
mL), NaH (1.75 mg of 60% dispersion in mineral oil, 0.0728 mmol) was added at
0°C. The reaction mixture was then warmed to it. and stirred for 1 hr. Then 2-
Chloro-4-pyridin-2-yl-pyrimidine (9.5 mg, 0.0311 mmol) was added. The reaction
mixture was stirred at rt. for overnight. It was then quenched with water and
extracted with EtOAc. The organic layer was separated, washed with brine and dried
(MgSC>4). Evaporation of solvent gave yellowish oil which was then purified by
Prep. HPLC to give a yellowish film as final product (Compound 336) as TFA salt.
(3.5 mg, 15% yield)
'H NMR(CD3OD, 500 MHz) 5 1.03 (s, 9 H), 1.08 (m, 2 H), 1.24 (m, 2 H), 1.43 (dd,
.7=9.77, 5.50 Hz, 1 H), 1.89 (m, 1 H), 2.24 (m, 1 H), 2.31 (m, 1 H), 2.57 (m, 1 H),
2.95 (m, 1 H), 3.50 (s, 3 H), 4.13 (m, 1 H), 4.29 (s, 1 H), 4.36 (d, 7=11.91 Hz, 1 H),
4.52 (m, 1 H), 5.13 (d, 7=10.08 Hz, 1 H), 5.31 (d, 7=16.79 Hz, 1 H), 5.76 (m, 1 H),
5.88 (m, 1 H), 7.64 (m, 1 H), 8.06-8.13 (m, 2 H), 8.54 (d, 7=7.93 Hz, 1 H), 8.73-8.76
(m,2H).
LC-MS (retention time: 1.787 mir..), MS m/z 670 (MH1"}.
To a solution of 2,4-dichloropyrimidine (149 mg, 1 mmol) in DMF (5 mL), dichloro bis(triphenylphosphine) palladium (II) (35 mg, 5 mol%) and 2-(tributylstannyl)thiophene (0.38 mL, 1.2 mmol) were added. The reaction mixture was heated at 70°C for 3hr. Then it was added saturated KF solution in methanol (20 mL) and stirred at rt for 4 hr. The reaction mixture was concentrated with a small amount of silica gel and the residue was filtered through filter paper and washed with EtOAc. The filtrate was then concentrated and the residue was purified by Prep. HPLC to afford an off-white solid as product. (110 mg, 35 % yield) 'H NMR (400 MHz, CD3OD) 8 7.20 (dd, 7=5.01,3.79 Hz, 1 H), 7.74 (dd, .7=5.01, 1.10 Hz, 1 H), 7.77 (d, 7=5.38 Hz, 1 H), 7.98 (dd, 7=3.79,1.10 Hz, 1 H), 8.55 (d, 7=5.38 Hz, 1 H). LC-MS (retention time: 1.453 min.), MS m/z 197 (MH*).
Step 2:
To a solution of intermediate 2 from Example 335 (20 mg, 0.039 mmol) in DMF (3 mL), NaH (7.8 mg of 60% dispersion in mineral oil, 0.195 mmol) was added at 0°C. The reaction mixture was then warmed to it. and stirred for 1 hr. Then 2-Chloro-4-thiophen-2-yl-pyrimidine (16.9 mg, 0.0544 mmol) was added. The reaction mixture was stirred at it. for overnight. It was then quenched with water and extracted with EtOAc. The organic layer was separated, washed with brine and dried (MgSCXt). Evaporation of solvent gave yellowish oil which was then purified by Prep. HPLC to give two products (Compound 337 and intermediate 3). Compoun 337: (yellowish film, 3.0 mg, 11% yield))
'H NMR(CD3OD, 500 MHz) 6 0.98-1.07 (m, 11 H), 1.22 (m, 2 H), 1.41 (dd, 7=9.54, 5.62 Hz, 1H), 1.86 (dd, 7=8.32, 5.63 Hz, 1 H), 2.19- 2.31 (m, 2 H), 2.52 (m, 1 H), 2.92 (m, 1 H), 3.50 (s, 3 H), 4.09 (m, 1 H), 4.25-4.32 (m, 2 H), 4.47 (dd, /=10.03, 7.34 Hz, 1 H), 5.11 (dd, 7=10.27, 1.71 Hz, 1 H), 5.28 (dd, 7=17.11, 1.46 Hz, 1 H), 5.69-5.79 (m, 2 H), 7.20 (dd, 7=4.89, 3.66 Hz, 1 H), 7.51 (d, 7=5.38 Hz, 1 H), 7.70 (d, 7=4.89 Hz, 1 H), 7.95 (d, 7=3.67 Hz, 1 H), 8.54 (d, 7=5.14 Hz, 1 H). LC-MS (retention time: 1.787 min.), MS m/z 696 (M+Na+).
Intermediate 3: (10 mg, 35% yield)
LC-MS (retention time: 1.477 min.), MS m/z 617(MH+).
To a solution of l-(2-Amino-3,3-dimethyl-butyryl)-4-(4-thiophen-2-yl-pyrimidin-2-yloxy)-pyrrolidine-2-carboxylic acid (l-cyclopropanesulfonylaminocarbonyl-2-vinyl-cyclopropyl)-amide (10 mg, 0.0137 mmol) in CH3CN (5 mL) was added cyclopropylacetic acid (2.1 mg, 0.0205 mmol), DBEA (0.012 mL, 0.742 mmol) and the coupling reagent HOBt (3.1 g, 0.0205 mmol) and HBTU (7.8 mg, 0.0205 mmol). The solution was stirred at rt. overnight. Then it was concentrated, washed with water and extracted with ethyl acetate twice. The combined organic layers were washed with brine, dried over MgSC>4 and concentrated to give yellow oil. It was purified by Prep. HPLC column to give a yellowish film as TFA salt (Compound 338). (4.6 mg, 41% yield)
'H NMR(CD3OD, 400 MHz) 6 0.12 (m, 2 H), 0.48 (m, 2 H), 0.90 (m, 1 H), 1.01-1.09 (m, 11 H), 1.23 (m, 2 H), 1.43 (dd, 7=9.29, 5.38 Hz, 1 H), 1.87 (dd, 7=8.31, 5.62 Hz, 1 H), 2.06 (m, 2 H), 2.19- 2.31 (m, 2 H), 2.52 (dd, 7=13.45,6.85 Hz, 1 H), 2.93 (m, 1 H), 4.12(dd, 7=11,98, 3,91 Hz, 1 H), 4.27 (d, 7=11.74 Hz, 1 H), 4.47 (dd, 7=10.27, 6.85 Hz, 1 H), 4.63 (s, 1 H), 5.11 (dd, 7=10.27, 1.47 Hz, 1 H), 5.28 (dd, 7=17.12, 1.47 Hz, 1 H), 5.71-5.80 (m, 2 H), 7.20 (dd, 7=4.89, 3.67 Hz, 1 H), 7.51 (d, 7=5.38 Hz, 1 H), 7.70 (d, 7=5.20 Hz, 1 H), 7.95 (d, 7=3.67 Hz, 1 H), 8.48 (d, 7=5.13 Hz, 1 H). LC-MS (retention time: 1.833 min.), MS m/z 699 (MH1").
Example 339: Preparation of Compound 339
Compound 342 was prepared by following Schemes of Example 337 and Example 338, except that 2-(tributylstannyl)furan was used in the place of 2-(tributylstannyl)thiophene in the Step 1 of Example 337.
To a solution of 2,4-dichloropyrimidine (149mg, 1 mmol) in DMF (5 mL), dichloro bis(triphenylphosphine) palladium (D) (35 mg, 5 mol%) and 2-(tributylstannyl)furan (0.35 mL, 1.1 mmol) were added. The reaction mixture was heated at 70°C for 3hr. Then it was added saturated KF solution in methanol (20 mL) and stirred at rt for 4hr. The reaction mixture was concentrated with a. small amount of silica gel and the residue was filtered through filter paper and washed with EtOAc. The filtrate was then concentrated and the residue was purified by Prep. HPLC to afford a brownish solid as product. (80 me. 27 % yield)
'H NMR (400 MHz, CD3OD) 5 6.68 (dd, 7=3.67,1.71 Hz, 1 H), 7.42 (d, 7=3.67 Hz, 1 H), 7.67 (d, 7=5.13 Hz, 1 H), 7.30 (d, 7=1.71 Hz, 1 H), 8.62 (d, 7=5.14 Hz, 1 H). LC-MS (retention time: 1.233 min.), MS m/z 181 (MH*).
Step 2:
To a solution of {l-[2-(l-cyclopropanesulfonylaminocarbonyl-2-vinyl-cyclopropyl-carbamoyl)-4-hydroxy-pyrrolidine-l-carbonyl]-2,2-diniethyl-propyl} -carbamic acid methyl ester (20 mg, 0.039 mmol) in DMF (3 mL), NaH (7.8 mg of 60% dispersion in mineral oil, 0.195 mmol) was added at 0°C. The reaction mixture was then warmed to it. and stirred for 1 hr. Then 2-Chloro-4-thiophen-2-yl-pyrimidine (16.0 mg, 0.0544 mmol) was added. The reaction mixture was stirred at it. for overnight. It was then quenched with water and extracted with EtOAc. The organic layer was separated, washed with brine and dried (MgSCU). Evaporation of solvent gave yellowish oil which was then purified by Prep. HPLC to give deboced coupling product. (3 mg, 11% yield) LC-MS (retention time: 1.420 min.), MS m/z 601 (MH4).
Step 3:
To a solution of l-(2-Amino-3,3-dimethyl-butyryl)-4-(4-furan-2-yl-pyrimidin-2-yloxy)-pyrrolidine-2-carboxylic acid (l-cyclopropanesulfonylaminocarbonyl-2-vinyl-cyclopropyl)-amide (3 mg, 0.0042 mmol) in CH3CN (5 mL) was added cyclopropylacetic acid (0.6 mg, 0.0063 mmol), DIEA (0.004 mL, 0.021 mmol) and the coupling reagent HOBt (1.0 g, 0.0063 mmol) and HBTU (2.4 mg, 0.0063 mmol). The solution was stirred at rt. overnight. Then it was concentrated, washed with water and extracted with ethyl acetate twice. The combined organic layers were washed with brine, dried over MgSCU and concentrated to give yellow oil. It was purified by
Prep. HPLC column to give a yellowish film as TFA salt (Compound 339). (1.0 mg,
30% yield)
'H NMR(CD3OD, 400 MHz) 6 0.12 (m, 2 H), 0.48 (m, 2 H), 0.90 (m, 1 H), 0.99-1.09
(m, 11 H), 1.23 (m, 2 H), 1.43 (dd, 7=9.05, 5.31 Hz, 1 H), 1.87 (m, 1 H), 2.05 (m, 2
H), 2.19- 2.29 (m, 2 H), 2.50 (m, 1 H), 2.93 (m, 1 H), 4.10 (dd, .7=12.23,3.91 Hz, 1
H), 4.25 (d, 7=11.99 Hz, 1 H), 4.47 (dd, 7=10.52, 7.09 Hz, 1 H), 4.63 (s, 1 H), 5.11
(dd, 7=10.52, 1.71 Hz, 1 H), 5.29 (dd, 7=17.12, 1.47 Hz, 1 H), 5.71-5.79 (m, 2 H),
6.65 (dd, 7=3.67, 1.96'Hz, 1 H), 7.38 (d, 7=3.67 Hz, 1 H), 7.40 (d, 7=5.38 Hz, 1 H),
7.76 (m, 1 H), 8.54 (d, 7=5.38 Hz, 1 H).
LC-MS (retention time: 1.790 min.), MS m/z 683 (MH+).
To a solution of 2,4-dichloropyrimidine (149 mg, 1 mmol) in DMF (5 mL), dichloro bis(triphenylphosphine) palladium (II) (35 mg, 5 mol%) and 2-(tributylstannyl)thiazole (412 mg, 1.1 mmol) were added. The reaction mixture was heated at 80°C for 3hr. Then it was added saturated KF solution in methanol (20 mL) and stirred at rt for 4hr. The reaction mixture was concentrated with a small amount of silica gel and the residue was filtered through filter paper and washed with EtOAc. The filtrate was then concentrated and the residue was purified by Prep. HPLC to afford a brownish solid as product. (9 mg, 3 % yield)
LC-MS (retention time: 1.320 min.), MS m/z 198 (MH*).
Step 2:
To a solution of l-[2-(2-Cyclopropyl-acetylamino)-3,3-dimethyl-butyryl]-4-hydroxy-pyrrolidine-2-carboxylic acid (l-cyclopropanesulfonylaminocarbonyl-2-vinyl-cyclopropyO-amide (12.5 mg, 0.0232 mmol) in DMF (3 mL), NaH (3.7 mg of 60% dispersion in mineral oil, 0.0.0928 mmol) was added at 0°C. The reaction mixture was then warmed to rt. and stirred for 1 hr. Then 2-Chloro-4-thiazole-2-yl-pyrimidine (9.0 mg, 0.0289 mmol) was added. The reaction mixture was stirred at rt. for overnight. It was then quenched with water and extracted with EtOAc. The organic layer was separated, washed with brine and dried (MgS04). Evaporation of solvent gave crude product which was then purified by Prep. HPLC to give white solid as final product (Compound 340). (2.8 mg, 17% yield)
'H NMR(CD3OD, 400 MHz) 5 0.12 (m, 2 H), 0.47 (m, 2 H), 0.89 (m, 1 H), 1.00-1.09 (m, 11 H), 1.22 (m, 2 H), 1.44 (dd, 7=9.54, 5.38 Hz, 1 H), 1.87 (dd, 7=8.07,5.38 Hz, 1 H), 2.06 (m, 2 H), 2.20- 2.32 (m, 2 H), 2.52 (dd, 7=13.70, 6.85 Hz, 1 H), 2.93 (m, 1 H), 4.13 (dd, 7=11.98, 3.91 Hz, 1 H), 4.30 (d, 7=11.98 Hz, 1 H), 4.48 (dd, 7=10.51, 7.09 Hz; 1 H), 4 63 (d, 7=9.54 Hz, 1 H), 5.11 (d, 7=10.51 Hz, 1 H), 5.29 (d, 7=17.12 Hz, 1 H), 5.73-5.80 (m, 2 H), 7.81 (d, 7=5.14 Hz, 1 H), 7.84 (d, 7=3.18 Hz, 1 H), 8.03 (d, 7=2.93 Hz, 1 H), 8.68 (d, 7=5.13 Hz, 1 H). LC-MS (retention time: 1.710 min.), MS m/z 700 (MET).
o a solution of Boc-HYP-OH (1.0 g, 4.324 mmol) in DMF (20 mL), NaH (0.38 g of 60% dispersion in mineral oil, 9.513 mmol) was added at 0°C. The reaction mixture was stirred for 1 hr. Then 2,4-dichloropyrimidine (0.709 g, 0.0289 mmol) was added. The reaction mixture was warmed to rt and stirred for overnight. It was then quenched with IN HCI solution and extracted with EtOAc. The organic layer was separated, washed with brine and dried (MgSC^). Evaporation of solvent gave crude product which was then purified by Prep. HPLC to give colorless oil as product. (0.4 g, 27% yield)
!H NMR(CD3OD, 300 MHz) 6 1.13 (m, 9 H), 2.37 (m, 1 H), 2.62 (m, 1 H), 3.70-3.84 (m, 2 H), 4.38 (m, 1 H), 5.65 (m, 1 H), 6.88 (d, 7=5.86 Hz, 1 H), 8.37 (d, 7=5.86 Hz, 1H). LC-MS (retention time: 1.370 min.), MS m/z 344(MH+).
Step 2: (Scheme 1, step 2)
To a solution of (2S, 4R) 4-(2-Chloro-pyrimidin-4-yloxy)-pyrrolidine-l,2-dicarboxylic acid 1-tert-butyl ester (0.34 g, 0.99 mmol) in CH3CN (20 mJL) was added (1R, 2S)/(1S, 2R) (l-cyclopropanesulfonyl-aminocarbonyl-2-vinyl-cyclo-propyl)-carbamic acid (0.511 g, 1.48 mmol), DEEA (0.86 mL, 4.95 mmol) and the coupling reagent HOBt (0.226 g, 1.48 mmol) and HBTU (0.561 g, 1.48 mmol). The solution was stirred at rt. overnight. Then it was concentrated, washed with water and extracted with ethyl acetate twice. The combined organic layers were washed with brine, dried over MgS(>4 and concentrated. It was then purified by Prep. HPLC column to give a yellow solid (intermediate 4). (0.33 g, 41% yield) 'H NMR(CD3OD, 300 MHz) 5 diasteoromer mixture. LC-MS (retention time: 2.907 min.), MS m/z 655 (MET1").
Step 3: (Scheme 2, step 1)
To a solution of intermediate 4 (50 mg, 0.061 mmol) in CH2C12 (2.5 mL), 1,2,3,4-
tetrahydroisoquinoline (0.011 mL, 0.0915 mmol) and Et3N (0.021 mL, 0.153 mmol)
were added. The reaction mixture was stirred at rt for overnight and at 40°C for 1
day. The solvent was stripped and the residue was purified by Prep. HPLC to give a
colorless oil. It was then dissolved in 4N HC1 in dioxane (1 mL) and stirred for
overnight. Evaporation of solvent gave a colorless oil as hydrochloride salt. (20 mg,
52% yield)
LC-MS (retention time: 1.160 min.), MS m/z 553 (MJT).
Step 4: (Scheme 2, step 2)
To a solution of 4-[2-(3,4-Dihydro-lH-isoquinolin-2-yl)-pyrimidin-4-yloxy]-pyrrolidine-2-carboxylicacid(l-cyclopropanesuIfonylaminocarbonyl-2-vinyl-cyclopropyO-amide hydrochloride (20 mg, 0.032 mmol) in CH3CN (5 mL) was added 2-methoxycarbonylamino-3,3-dimethyl-butyric acid (9.1 mg, 0.048 mmol), DIEA (0.028 mL, 0.16 mmol) and the coupling reagent HOBt (7.3 mg, 0.048 mmol) and HBTU (18.2 mg, 0.048 mmol). The solution was stirred at rt. overnight. Then it was concentrated, washed with water and extracted with ethyl acetate twice. The combined organic layers were washed with brine, dried over MgSO4 and
concentrated to give yellowish oil. It was purified by Prep. HPLC column to give a
colorless oil as TFA salt (Compound 341). (16 mg, 60% yield)
'H NMR(CD3OD, 500 MHz) 6 0.98-1.06 (m, 13 H), 1.13 (m, 1 H), 1.22-1.32 (m, 1
H), 1.35-1.44 (m, 1 H), 1.82 (dd, 7=8.24, 5.19 Hz, 0.5 H), 1.90 (dd, 7=8.24,5.49 Hz,
0.5 H), 2.26 (m, 1 H), 2.32-2.43 (m, 1 H), 2.56 (m, 1 H), 2.96 (m, 1 H), 3.11 (m, br, 2
H), 3.56 (s, 3 H), 4.14 (m, 1 H), 4.21 (m, 1 H), 4.38 (m, 1 H), 4.47 (m, 1 H), 5.15 (m,
1 H), 5.31 (m, 1 H), 5.75 (m, 1 H), 5.94 (s, 1 H), 6.47 (d, 7=7.02 Hz, 1 H), 7.29 (s, 4
H), 7.49 (m, 1 H), 7.56 (m, 1 H), 7.74 (d, 7=8.24 Hz, 1 H), 7.88 (d, 7=8.24 Hz, 1 H),
8.11(d,7=7.02Hz, 1 H).
LC-MS (retention time: 1.517 min.), MS m/z 724 (MH*).
Example 342: Preparation of Compound 342
Compound 342was prepared by following Scheme 2 of Example 341, except that isoindoline was used in the place of 1,2,3,4-tetrahydroisoquinoline in step 1 of scheme 2.
Step 1:
To a solution of intermediate 4 from Example 341 (50 mg, 0.061 mmol) in CH2Ch (2.5 mL), isoindoline (0.013 mL, 0.115 mmol) and Et3N (0.026 mL, 0.19 mmol) were added. The reaction mixture was stirred at rt for 2 days. The solvent was stripped and the residue was purified by Prep. HPLC to give a colorless oil. It was then dissolved in 4N HC1 in dioxane (1 mL) and stirred for overnight. Evaporation of solvent gave crude product which was purified by Prep.HPLC again to afford yellowish solid as TFA salt. (8.5 mg, 14% yield) LC-MS (retention time: 1.860 min.), MS m/z 539 (MH+).
Step 2:
o a solution of 4-[2-(l,3-Dihydro-isoindol-2-yl)-pyrimidin-4-yloxy]-pyrrolidine-2-carboxylic acid (l-cyclopropanesulfonylaminocarbonyl-2-vinyl-cyclopropyl)-amide hydrochloride (8.5 mg, 0.0104 mmol) in CH3CN (5 mL) was added 2-methoxycarbonylamino-3,3-dimethyl-butyric acid (3.0 mg, 0.0156 mmol), DIEA (0.009 mL, 0.052 mmol) and the coupling reagent HOBt (2.4 mg, 0.0156 mmol) and HBTU (5.9 mg, 0.0156 mmol). The solution was stirred at rt. overnight. Then it was concentrated, washed with water and extracted with ethyl acetate twice. The combined organic layers were washed with brine, dried over MgS04 and concentrated to give yellowish oil. It was purified by Prep. HPLC column to give a colorless oil as TFA salt (Compound 342). (3 mg, 35% yield) 'H NMR(CD3OD, 300 MHz) § diasteoromer mixture. LC-MS (retention time: 2.547 min.), MS m/z 710 (Mir).
Compound 342 was prepared by following Scheme 2 of Example 341, except that morpholine was used in the place of 1,2,3,4-tetrahydroisoquinoline in step 1 of scheme 2.
Step 1:
To a solution of intermediate 4 from Example 341 (50 mg, 0.061 mmol) in
(2.5 mL), morpholine (0.008 mL, 0.0915 mmol) and Et3N (0.021 mL, 0.153 mmol)
were added. The reaction mixture was stirred at rt for overnight and at 40°C for 1
day. The solvent was stripped and the residue was purified by Prep. HPLC to give a
colorless oil. It was then dissolved in 4N HC1 in dioxane (1 mL) and stirred for
overnight. Evaporation of solvent gave a colorless oil as hydrochloride salt. (12.6 mg,
36% yield)
LC-MS (retention time: 0.810 min.), MS m/z 507 (MH4).
To a solution of 4-(2-Morpholin-4-yl-pyrimidin-4-yloxy)-pyrrolidine-2-carboxylic
acid (l-cyclopropanesulfonylaminocarbonyl-2-vinyl-cyclopropyl)-amide
hydrochloride (12.6 mg, 0.0217 mmol) in CH3CN (5 mL) was added 2-methoxycarbonylamino-3,3-dimethyl-butyric acid (6.2 mg, 0.0326 mmol), DEEA (0.019 mL, 0.1085 mmol) and the coupling reagent HOBt (5.0 mg, 0.0326 mmol) and HBTU (12.4 mg, 0.0326 mmol). The solution was stirred at it. overnight. Then it was concentrated, washed with water and extracted with ethyl acetate twice. The combined organic layers were washed with brine, dried over MgSC>4 and concentrated to give yellowish oil. It was purified by Prep. HPLC column to give a colorless oil as TFA salt (Compound 343). (7 mg, 41% yield) 'H NMR(CD3OD, 500 MHz) 8 diasteoromer mixture. LC-MS (retention time: 1.280 min.), MS m/z 678 (MH*).
To a solution of 4-p-tolylsulfanylcarbonyl-pyrrolidine-l,2-dicarboxylic acid 1-tert-butyl ester 2-methyl ester (3.0 g, 7.91 mmol)in ethanol (15 mL) and THF (30 mL) mixture, sodium borohydride (0.6 g, 15.8 mmol) was added. The reaction mixture was stirred at it. for overnight. Then it was concentrated, washed with 1 N HC1 solution and extracted with EtOAc three times. The organic layers were combined, washed with saturated NaHC03 solution and dried (MgSO/O. Evaporation of solvent gave yellowish oil which was purified by flash column chromatography (silica gel, 3:1 EtOAc: Hexanes) to afford colorless oil as product (intermediate 5). (1.77 g, 86% yield)
'H NMR (CD3OD, 500 MHz) 5 1.43 (m, 9 H), 2.00-2.13 (m, 2 H), 2.46 (m, 1 H), 3.19 (m, 1 H), 3.47-3.53 (m, 2 H), 3.61 (m, 1 H), 3.73 (m, 3 H), 4.31 (m, 1 H). LC-MS (retention time: 1.240 min.), MS m/z 282 (M+Na+).
Step 2: (Scheme 2, step 1)
To a solution of intermediate 5 (80 mg, 0.309 mmol) in THF (10 mL) at 0°C, triphenylphosphine (121.4 mg, 0.463 mmol) and 4-hydroxyquinoline (67.2 mg, 0.463 mmol) were added. Then DEAD (80.6 mg, 0.463 mmol) was added. The reaction mixture was warmed to it. and stirred for 2 days. Then solvent was evaporated and the residue was purified by Prep. HPLC to give colorless oil. It was then dissolved in 4N HC1 in dioxane (3 mL) and stirred for 2 hr. Evaporation of solvent gave thick colorless oil as bis HC1 salt. (110 mg, 99% yield)
'H NMR(500 MHz, CD3OD) 8 2.52 (m, 1 H). 2.60 (m, 1 H), 3.19 (m, 1 H), 3.45 (m, 1 H), 3.66 (s, 3 H), 3.86 (m, 1 H), 4.61-4.75 (m, 3 H), 7.56 (d, 7=6.7 Hz, 1 H), 7.94 (t, 7=7.3 Hz, 1 H), 8.10-8.20 (m, 2 H), 8.55 (d, 7=8.2 Hz, 1 H), 9.07 (d, 7=6.7 Hz, 1 H). LC-MS (retention time: 0.570 min.), MS m/z 287 (MH+).
Step 3: (Scheme 2, step 2)
To a solution of 4-(quinolin-4-yloxymethyl)-pyrrolidine-2-carboxylic acid methyl ester bis hydrochloride salt (110 mg, 0.306 mmol) in CH3CN (10 mL) was added 2-methoxycarbonylamino-3,3-dimethyl-butyric acid (87 mg, 0.46 mmol), DEA (0.27 mL, 1.53 mmol) and the coupling reagent HOBt (70 mg, 0.46 mmol) and HBTU (174
mg, 0.46 mmol). The solution was stirred at rt. overnight. Then it was concentrated, washed with water and extracted with ethyl acetate twice. The combined organic layers were washed with brine, dried over MgSC>4 and concentrated to give yellowish oil. It was purified by Prep. HPLC column to give colorless oil as TFA salt. (105 mg, 60% yield)
1H NMR (CD3OD, 500 MHz) 6 1.07 (s, 9 H). 2.34 (m, 1 H), 2.45 (m, 1 H), 3.14 (m, 1 H), 3.27 (s, 3 H), 3.75 (s, 3 H), 4.05 (m, 1 H), 4.20 (m, 1 H), 4.31 (s, 1 H), 4.57-4.63 (m, 2 H), 4.73 (m, 1 H), 7.53 (d, 7=6.7 Hz, 1 H), 7.91 (t, 7=7.6 Hz, 1 H), 8.06-8.16 (m, 2 H), 8.43 (d, 7=8.6 Hz, 1 H), 9.02 (d, 7=6.4 Hz, 1 H). LC-MS (retention time: 1.250 min.), MS m/z 458 (MET).
Step 4:(Scheme 2, step 3)
To a solution of l-(2-Methoxycarbonylamino-3,3-dimethyl-butyryl)-4-(quinolin-4-yloxymethyl)-pyrrolidine-2-carboxylic acid methyl ester (100 mg, 0.175 mmol) in THF (6 mL), methanol (3.25 mL) and water (1.0 mL) mixture, lithium hydroxide monohydrate (110 mg, 2.62 mmol) was added. The reaction mixture was stirred at rt. for overnight. Then it was acidified with IN HC1 solution to pH=3 to 5 and concentrated. .Extracted with ethyl acetate (3x40 mL) and the organic layers were combined and dried (MgS04). Evaporation of solvent gave thick colorless oil to carry on (25 mg, 32% yield).
To a solution of above compound (25 mg, 0.056 mmol) in CHsCN (5 mL) was added (1R, 2S) (l-cyclopropanesulfonyl-aminocarbonyl-2-vinyl-cyclo-propyl)-carbamic acid hydrochloride (22.5 mg, 0.085 mmol), DffiA (0.05 mL, 0.28 mmol) and the coupling reagent HOBt (12.9 mg, 0.085 mmol) and HBTU (32 mg, 0.085 mmol). The solution was stirred at rt. overnight. Then it was concentrated, washed with water and extracted with ethyl acetate twice. The combined organic layers were washed with brine, dried over MgSO4 and concentrated to give yellow oil. It was purified by Prep. HPLC column to give colorless thick oil as TFA salt (Compound 344). (20 mg, 46% yield)
'H NMR(CD3OD, 500 MHz) 6 1.02-1.10 (m, 11 H). 1.24 (m, 2 H), 1.40 (dd, 7=9.2, 5.5 Hz, 1 H), 1.90 (dd, 7=7.9, 5.5 Hz, 1 H), 2.19-2.38 (m, 3 H), 2.95 (m, 1 H), 3.19 (m, 1 H), 3.28 (s, 3 H), 4.10 (m, 1 H), 4.15 (m, 1 H), 4.34 (s, 1 H), 4.55 (m, 1
4.62 (d, 7=4.6 Hz, 2 H), 5.15 (d, J=10.7 Hz, 1 H), 5.30 (d, J=17.1 Hz, 1H), 5.72 (m, 1 H), 7.54 (d, 7=6.7 Hz, 1 H), 7.93 (m, 1 H), 8.07-8.18 (m, 2 H), 8.41 (d, 7=8.6 Hz, 1 H), 9.03 (d, 7=6.7 Hz, 1 H), 9.09(s, 1 H). LC-MS (retention time: 1.617 min.), MS m/z 656 (MH*).
Example 345: Preparation of Compound 345
Compound 345 was prepared by following Scheme 2 of Example 344, except that 3-bromophenol was used in the place of 4-hydroxyquinoline in step 1 of scheme 2.
Stepl:
To a solution of Intermediate 5 from Example 344 (150 mg, 0.578 mmol) in THF (15 mL) at 0°C, triphenylphosphine (228 mg, 0.868 mmol) and 3-bromophenol (150 mg, 0.868 mmol) were added. Then DEAD (0.14.mL, 0.868 mmol) was added. The reaction mixture was warmed to rt. and stirred for 2 days. Then solvent was
evaporated and the residue was purified by Prep. HPLC to give colorless oil as
product. (105 mg, 44% yield)
LC-MS (retention time: 2.023 min.), MS m/z 436
Step 2:
4-(3-Bromo-phenoxymethyl)-pyrrolidine-l,2-dicarboxylic acid 1-tert-butyl ester 2-methyl ester (35 mg, 0.085 mmol) was dissolved in 4N HC1 in dioxane (1.5 mL) and stirred for 2 hr. Evaporation of solvent gave thick colorless oil. To a solution of this oil in' CKjCN (10 mL) was added 2 methoxycarbor.y!arrJno-3,3-dirnethy!-butyric acid (21.9 mg, 0.1155 mmol), DffiA (0.067 mL, 0.385 mmol) and the coupling reagent HOBt (17.7 mg, 0.1155 mmol) and HBTU (43.8 mg, 0.1155 mmol). The solution was stirred at rt. overnight. Then it was concentrated, washed with water and extracted with ethyl acetate twice. The combined organic layers were washed with brine, dried over MgSO4 and concentrated. It was then purified by Prep. HPLC column to give colorless oil as product. (20 mg, 49% yield)
'H NMR (CD3OD, 400 MHz) 5 1.03 (s, 9 H), 2.15 (m, 1 H), 2.24 (m, 1 H), 2.83 (m, 1 H), 3.54 (s, 3 H), 3.70 (s, 3 H), 3.87 (m, 1 H), 3.91-3.98 (m, 3 H), 4.3l(s, 1 H), 4.59 (dd, 7=8.80, 5.38 Hz, 1 H), 6.89 (d, 7=8.32 Hz, 1 H), 7.03-7.10 (m, 2 H), 7.15 (t, 7=8.07 Hz, 1 H). LC-MS (retention time: 1.943 min.), MS m/z 485 (MH4).
Step 3:
To a solution of 4-(3-Bromo-phenoxymethyl)-l-(2-memoxycarbonylamino-3,3-dimethyl-butyryl)-pyrrolidine-2-carboxylic acid methyl ester (17 mg, 0.035 mmol) in THF (1.5 mL), methanol (0.8 mL) and water (0.25 mL) mixture, lithium hydroxide monohydrate (22 mg, 0.525 mmol) was added. The reaction mixture was stirred at it. for 3 days. Then it was acidified with IN HC1 solution to pH=3 to 5 and concentrated. Extracted with ethyl acetate (2x20 mL) and the organic layers were combined and dried (MgSO/j). Evaporation of solvent gave thick colorless oil to carry on (15 mg, 91% yield).
To a solution of above acid (15 mg, 0.0318 mmoJ) in CH3CN (5 mL) was added (1R, 2S) (1 -cyclopropanesulfonyl-aminocarbonyl-2-vinyl-cyclo-propyl)-carbamic acid hydrochloride (12.7 mg, 0.0477 mmol), DffiA (0.028 mL, 0.159 mmol) and the coupling reagent HOBt (7.3 mg, 0.0477 mmol) and HBTU (18.1 mg, 0.0477 mmol). The solution was stirred at rt. overnight. Then it was concentrated, washed with water and extracted with ethyl acetate twice. The combined organic layers were washed with brine, dried over MgSCU and concentrated. It was then purified by Prep. HPLC column to give colorless thick oil as final product (Compound 345). (14 mg, 64% yield)
'H NMR(CD3OD, 400 MHz) 6 1.00-1.06 (m, 11 H), 1.21 (m, 2 H), 1.37 (dd, .7=9.53 Hz, 5.62 Hz, 1 H), 1.86 (dd, .7=8.07 Hz, 5.62 Hz, 1 H), 2.06 (m, 1 H), 2.14-2.24 (m, 2 H), 2.81-2.94 (m, 2 H), 3.53 (s, 3 H), 3.91-3.97 (m, 4 H), 4.33 (s, 1 H), 4.38 (m, 1 H), 5.11 (dd, 7=10.27, 1.47 Hz, 1 H), 5.28 (dd, 7=17.12, 1.22 Hz, 1 H), 5.70 (m, 1 H), 6.89 (m, 1 H), 7.05-7.11 (m, 2 H), 7.16 (t, 7=8.07 Hz, 1 H). LC-MS (retention time: 3.500 min.), MS m/z 683 (MHf).
To a solution of 4-hydroxymethyl-pyrrolidine-l,2-dicarboxylic acid 1-tert-butyl ester 2-methyl ester (300 mg, 1.157 mmol) in THF (15 mL) at 0°C, triphenylphosphine (455 mg, 1.735 mmol) and 5-bromo-pyridin-3-ol (prepared according to EE.Ziegler et ah, J.Am.Chem.Soc., (1973), 95, 7458) (302 mg, 1.735 mmol) were added. Then DEAD (0.273 mL, 1.735 mmol) was added. The reaction mixture was warmed to it. and stirred for 2 days. Then solvent was evaporated and the residue was purified by Prep. HPLC to give a yellowish oil. Then it was dissolved in 4N HC1 solution in dioxane (3.0 mL) and stirred for 4 hr. Evaporation of solvent gave crude product which was further purified by Prep. HPLC to afford a yellowish oil as TFA salt. (70 mg, 11% yield) LC-MS (retention time: 0.890 min.), MS m/z 315 (MH*).
Step 2: (Scheme 1, step 2)
To a solution of 4-(5-Bromo-pyridin-3-yloxymethyl)-pyrrolidine-2-carboxylic acid methyl ester (70 mg, 0.129 mmol) in CH3CN (10 mL) was added 2-methoxycarbonylamino-3,3-dimethyl-butyric acid (36.5 mg, 0.193 mmol), DIEA (0.135 mL, 0.744 mmol) and the coupling reagent HOBt (30 mg, 0.193 mmol) and HBTU (73 mg, 0.193 mmol). The solution was stirred at rt. overnight. Then it was concentrated, washed with water and extracted with ethyl acetate twice. The
combined organic layers were washed with brine, dried over MgSCU and
concentrated. It was then purified by Prep. HPLC column to give colorless oil as
product. (80 mg, 100% yield)
'H NMR (CD3OD, 400 MHz) 8 1.04 (s, 9 H), 2.17 (m, 1 H), 2.26 (m, 1 H), 2.87 (m,
1 H), 3.50 (s, 3 H), 3.70 (s, 3 H), 3.88-3.98 (m, 2 H), 4.04-4.12 (m, 2 H), 4.28 (s, 1
H), 4.60 (dd, 7=9.05,5.87 Hz, 1 H), 7.86 (m, 1 H) 8.31-8.35 (m, 2 H).
LC-MS (retention time: 1.697 min.), MS m/z 486 (MH4).
Step 3: (Scheme 1, step 3)
To a solution of 4-(5-Bromo-pyridin-3-yloxymethyl)-l-(2-methoxycarbonylamino-
3,3-dimethyl-butyryl)-pyrrolidine-2-carboxylic acid methyl ester (80 mg, 0.133
mmol) in THF (5.6 mL), methanol (3 mL) and water (1 mL) mixture, lithium
hydroxide monohydrate (84 mg, 2.0 mmol) was added. The reaction mixture was
stirred at rt. for 3 days. Then it was acidified with IN HC1 solution to pH=3 to 5.
Extracted with ethyl acetate (2x20 mL) and the organic layers were combined and
dried (MgSC>4). Evaporation of solvent gave thick colorless oil as product
(intermediate 6) (50 mg, 80% yield).
*H NMR (CDsQD, 400 MHz) § 1.04 (s, 9 H), 2.16-2.30 (m, 2 H), 2.88 (m, 1 H), 3.51
(s, 3 H), 3.92 (m, 2 H), 4.07 (m, 2 H), 4.29 (s, 1 H), 4.57 (dd, .7=8.56, 5.87 Hz, 1 H),
7.79 (m, 1 H) 8.29 (m, 2 H).
LC-MS (retention time: 1.590 min.), MS m/z 472 (MH*).
Step 4: (Scheme 2)
To a solution of 4-(5-Bromo-pyridin-3-yloxymethyI)-l-(2-
methoxycarbonyIamino-3,3-dimethyl-butyryl)-pyrrolidine-2-carboxyIic acid (5
mg, 0.0106 mmol) in CH3CN (5 mL) was added (1R, 2S) (1-
cyclopropanesulfonyI-aminocarbonyl-2-vinyl-cycIo-propyl)-carbamk acid
hydrochloride (4.2 mg, 0.0159 mmol), DIEA (0.009 mL, 0.053 mmol) and the coupling reagent HOBt (2.4 mg, 0.0159 mmol) and HBTU (6.0 mg, 0.0159 mmol). The solution was stirred at rt. overnight Then it was concentrated, washed with water and extracted with ethyl acetate twice. The combined organic layers were washed with brine, dried over MgSO4 and concentrated. It
was then purified by Prep. HPLC column to give colorless thick oil as final product (Compound 346). (2 mg, 24% yield)
'H NMR(CD3OD, 400 MHz) 8 1.00-1.07 (m, 11 H), 1.20 (m, 2 H), 1.37 (dd, 7=9.29 Hz, 5.14 Hz, 1 H), 1.86 (dd, 7=8.07 Hz, 5.38 Hz, 1 H), 2.08 (m, 1 H), 2.15-2.25 (m, 2 H), 2.87-2.94 (m, 2 H), 3.51 (s, 3 H), 3.92-3.97 (m, 2 H), 4.02-4.07 (m, 2 H), 4.31 (s, 1 H), 4.39 (m, 1 H), 5.10 (dd, 7=10.27, 1.47 Hz, 1 H), 5.28 (dd, 7=17.12,1.46 Hz, 1 H), 5.70 (m, 1 H), 7.68 (m, 1 H), 8.24 (m, 2 H). LC-MS (retention time: 1.727 min.), MS m/z 684 (MM*).
Example 346 (16 mg, 0.0339 mmol) in DMF
(1 mL), 3-thiopheneboronic acid (5.6 mg, 0.044 mmol),
tetrakis(triphenylphosphine) palladium (2.0 mg, 0.0017 mmol) and 2M Na2CO3 solution (0.051 mL, 0.1017 mmol) were added. The reaction mixture was heated at HOoC for 4hr. Then it was filtered and washed with methanol. The filtrate was concentrated and purified by Prep.HPLC to give brownish oil as product. (6mg, 37% yield)
'H NMR (CD3OD, 400 MHz) $ 1.05 (s, 9 H), 2.21-2.30 (m, 2 H), 2.95 (m, 1 H), 3.42 (s, 3 H), 3.93 (m, 1 H), 4.01 (m, 1 H), 4.20-4.30 (m, 3 H), 4.60 (dd, 7=8.56, 5.87 Hz, 1 H), 7.64 (m, 2 H), 8.12 (m, 1 H) 8.37 (m, 1 H), 8.45 (m, 1 H), 8.75 (s, 1 H). LC-MS (retention time: 1.353 min.), MS m/z 476 (MH1").
Step 2:
To a solution of l-(2-Methoxycarbonylamino-3,3-dimethyl-butyryl)^--(5-thiophen-3-yI-pyridin-3-yloxymethyl)-pyrrolidine-2-carboxylic acid (6 mg, 0.0126 mmol) in GHsCN (5 mL) was added (1R, 2S) (l-cyclopropanesulfonyl-aminocarbonyI-2-vinyl-cyclo-propyl)-carbamic acid hydrochloride (5.0 mg, 0.0189 mmol), DDEA (0.011 mL, 0.063 mmol) and the coupling reagent HOBt (2.9 mg, 0.0189 mmol) and HBTU (7.2 mg, 0.0189 mmol). The solution was stirred at rt. overnight. Then it was concentrated, washed with water and extracted with ethyl acetate twice. The combined organic layers were washed with brine, dried over MgSCU and concentrated. It was then purified by Prep. HPLC column to give yellowish film as TFA salt (Compound 347). (2.2 mg, 22% yield)
'H NMR(CD3OD, 400 MHz) 6 1.01-1.07 (m, 11 H), 1.19 (m, 2 H), 1.36 (m, 1 H), 1.88 (dd, 7=8.07 Hz, 5.62 Hz, 1 H), 2.09-2.24 (m, 3 H), 2.91 (m, 1 H), 3.00 (m, 1 H), 3.45 (s, 3 H), 3.98 (d, 7=5.86 Hz, 2 H), 4.20-4.31 (m, 3 H), 4.43 (m, 1 H), 5.12 (dd, 7=10.27, 1.71 Hz, 1 H), 5.29 (dd, 7=17.12, 1.22 Hz, 1 H), 5.69 (m, 1 H), 7.64 (m, 2 H), 8.11 (m, 1 H), 8.31 (m, 1 H), 8.43 (m, 1 H), 8.75 (s, 1 H). LC-MS (retention time: 1.540 min.), MS m/z 688 (MH+).
(Scheme 1)
To a solution of intermediate 5 from Example 344 (700 mg, 2.7 mmol) in THF (90 mL), methanol (50 mL) and water (12 mL) mixture, lithium hydroxide monohydrate (1700 mg, 2.0 mmol) was added. The reaction mixture was stirred at it. for overnight. Then it was acidified with IN HC1 solution to pH=3 to 5. Extracted with ethyl acetate (2x20 mL) and the organic layers were combined and dried (MgSC>4). Evaporation of solvent gave thick colorless oil as product (intemediate 7) (0.58, 88% yield).
'II NMR (CD3OD, 400 MHz) 5 1. 42 (m, 9 H), 2.00 2.09 (m, 2 H), 2.15 (m, 1 H), 3.17 (m, 1 H), 3.49 (m, 2 H), 3.59 (m, 1 H), 4.24 (m, 1 H). LC-MS (retention time: 1.08 min.), MS m/z 268 (M+Na*).
Step 2: (Scheme 2, step 1)
To a solution of intermediate 7 (270 mg, 1.1 mmol) in DMSO (10 mL), potassium t-butoxide (309 mg, 2.75 mmol) was added. The reaction mixture was stirred at it for Ihr. Then 2-Bromo-4-chloro-pyridine (254 mg, 1.32 mmol) was added. The reaction mixture was stirred at it for overnight. Then it was quenched with water and washed with ethyl acetate. The aqueous layer was separated and acidified with IN HC1 solution to pH=3. Extracted with ethyl acetate twice and the organic layers were combined and dried (MgSO4). Evaporation of solvent gave an orange oil. It was then dissolved in methanol and HC1 (gas) was bubbled through for 2 min at -78°C. Then the reaction mixture was warmed to rt and stirred for overnight. Evaporation of solvent gave an orange oil as crude to carry on.
LC-MS (retention time: 0.65 min.), MS m/z 315 (MH+).
Step 3: (Scheme 2, step 2)
To a solution of crude 4-(2-Bromo-pyridin-4-yloxymethyI)-pyrrolidine-2-carboxylic
acid methyl ester in CH3CN (20 mL) was added 2-methoxycarbonylamino-3,3-
dimethyl-butyric acid (312 mg, 1.65 mmol), DIEA (1.15 mL, 6.6 mmol) and the
coupling reagent HOBt (252 mg, 1.65 mmol) and HBTU (626 mg, 1.65 mmol). The
solution was stirred at rt. overnight. Then it was concentrated, washed with water and
extracted with ethyl acetate twice. The combined organic layers were washed with
brine, dried over MgSC>4 and concentrated. It was then purified by Prep. HPLC
column to give colorless oil as product. (270 mg, 41% yield two steps)
'H NMR (CD3OD, 400 MHz) 8 1.03 (s, 9 H), 2.13-2.19 (m, 2 H), 2.87 (m, 1 H), 3.51
(s, 3 H), 3.70 (s, 3 H), 3.93 (d, 7=6.36 Hz, 2 H), 4.11 (m, 2 H), 4.27 (s, 1 H), 4.60
(dd, 7=8.80, 5.87 Hz, 1 H), 7.06 (d, 7=5.87, 2.20 Hz, 1 H) 7.32 (d, 7=2.20 Hz, 1 H),
8.18 (d, 7=6.11 Hz, 1H).
LC-MS (retention time: 1.657 min.), MS m/z 486 (MH1").
Step 4: (Scheme 2, step 3)
To a solution of 4-(2-Bromo-pyridin-4-yloxymethyl)-l-(2-methoxycarbonylarnino-3,3-dimethyl-butyryl)-pyrrolidine-2-carboxyIic acid methyl ester (270 mg, 0.45 mmol) in THF (18 mL), methanol (10 mL) and water (3.3 mL) mixture, lithium hydroxide monohydrate (283 mg, 6.75 mmol) was added. The reaction mixture was stirred at it. for overnight. Then it was concentrated and acidified with IN HC1 solution to pH=3 to 5. The off-white solid was collected as product (intermediate 8) (180 mg, 85% yield).
'H NMR (CD3OD, 500 MHz) 8 1.06 (s, 9 H), 2.20-2.29 (m, 2 H), 2.89 (m, 1 H), 3.54 (s, 3 H), 3.92 (d, 7=6.4 Hz, 2 H), 4.06-4.13 (m, 2 H), 4.31 (d, 7=8.85 Hz, 1 H), 4.59 (dd, 7=8.85, 5.50 Hz, 1 H), 7.00 (dd, 7=6.10, 2.24 Hz, 1 H), 7.22 (d, 7=1.83 Hz, 1 H), 8.12 (d, 7=5.80 Hz, 1 H). LC-MS (retention time: 2.113 min.), MS m/z 472 (MH4).
Step 5: (Scheme 3)
To a solution of intermediate 8 (10 mg, 0.0212 mmol) in CH3CN (5 mL) was added (1R, 2S) (l-cyclopropanesulfonyl-aminocarbonyl-2-vinyl-cyclo-propyl)-carbamic acid hydrochloride (8.5 mg, 0.00318 mmol), DIEA (0.018 mL, 0.106 mmol) and the coupling reagent HOBt (4.9 mg, 0.0318 mmol) and HBTU (12.1 mg, 0.0318 mmol). The solution was stirred at rt overnight. Then it was concentrated, washed with water and extracted with ethyl acetate twice. The combined organic layers were washed with brine, dried over MgSOa and concentrated. It was then purified by Prep. HPLC column to give colorless thick oil as final product (Compound 348). (9 mg, 53% yield)
'H NMR(CD3OD, 400 MHz) 8 1.00-1.06 (m, 11 H), 1.20 (m, 2 H), 1.36 (dd, 7=9.54 Hz, 5.38 Hz, 1 H), 1.87 (dd, 7=8.07 Hz, 5.38 Hz, 1 H), 2.04-2.24 (m, 3 H), 2.88-2.94 (m, 2 H), 3.52 (s, 3 H), 3.93 (d, 7=5.87 Hz, 2 H), 4.09 (m, 2 H), 4.30 (s, 1 H), 4.38 (t, 7=7.58 Hz, 1 H), 5.11 (dd, 7=10.27, 1.47 Hz, 1 H), 5.28 (dd, 7=17.12, 1.47 Hz, 1 H), 5.70 (m, 1 H), 7.00 (dd, 7=5.87, 2.20 Hz, 1 H), 7.24 (d, 7=2.20 Hz, 1 H), 8.14 (d, 7=5.87 Hz, 1 H). LC-MS (retention time: 1.670 min.), MS m/z 684 (MH*>
Compound 349 was prepared by following scheme of Example 347, except that intermediate 8 from Example 348 was used in the place of intermediate 6 from Example 346 in step 1.
Step 1:
To a solution of intermediate 8 (20 mg, 0.0423 mmol) in DMF (1 mL), 3-thiopheneboronic acid (7.0 mg, 0.055 mmol), tetrakis (triphenylphosphine) palladium (2.4 mg, 0.00212 mmol) and 2M Na2CO3 solution (0.063 mL, 0.127 mmol) were added. The reaction mixture was heated at 110°C for 30 hr. Then it was filtered and washed with methanol. The filtrate was concentrated and purified by Prep.HPLC to give brownish oil as product. (10.5 mg, 42% yield) (50177-165) LC-MS (retention time: 1.690 min.), MS m/z 476 (MET1").
Step 2:
To a solution of l-(2-Methoxycarbonylamino-3,3-dimethyl-butyryl)-4-(2-thiophen-3-yl-pyridin-4-yloxymethyl)-pyrrolidine-2-carboxylic acid (10 mg, 0.017 mmol) in CHsCN (5 mL) was added (1R, 2S) (l-cyclopropanesulfonyl-aminocarbonyl-2-vinyl -cyclo-propyl)-carbamic acid hydrochloride (6.8 mg, 0.0254 mmol), DEEA (0.015 mL, 0.085 mmol) and the coupling reagent HOBt (3.9 mg, 0.0254 mmol) and HBTU (9.6 mg, 0.0254 mmol). The solution was stirred at rt. overnight. Then it was concentrated, washed with water and extracted with ethyl acetate twice. The combined organic layers were wasned witn Dnne, dried over Mgi>U4 ana concentrated. It was then purified by Prep. HPLC column to give brownish film as TFA salt (Compound 349). (2.2 mg, 16% yield).(50177-172) 'H NMR(CD3OD, 400 MHz) 8 1.00-1.07 (m, 11 H), 1.20 (m, 2 H), 1.37 (dd, 7=9.04, 5.38 Hz, 1 H), 1.88 (dd, 7=8.07 Hz, 5.38 Hz, 1 H), 2.10-2.25 (m, 3 H), 2.90 (m, 1 H), 3.04 (m, 1 H), 3.47 (s, 3 H), 3.93-4.02 (m, 2 H), 4.29 (s, 1 H), 4.35-4.45 (m, 3 H), 5.12 (d, 7=10.51 Hz, 1 H), 5.28 (d, J=17.61 Hz, 1 H), 5.69 (m, 1 H), 7.40 (dd, 7=6.84, 2.44 Hz, 1 H), 7.71-7.80 (m, 3 H), 8.38 (m, 1 H), 8.51 (d, 7=7.09 Hz, 1 H). LC-MS (retention time: 1.443 min.), MS m/z 688 (MET).
Example 350: Preparation of Compound 350
To a solution of intermediate 8 from Example 348 (20 mg, 0.0423 mmol) in DMF (2 mL), 2-thiopheneboronic acid (7.0 mg, 0.055 mmol), tetrakis(triphenylphosphine) palladium (2.4 mg, 0.00212 mmol) and barium hydroxide (40 mg, 0.127 mmol) were added. The reaction mixture was heated at 150°C in Smith microwave reactor for 110 min. Then it was filtered and washed with methanol. The filtrate was concentrated and purified by Prep.HPLC to give yellowish oil as product (5.0 mg, 20% yield) LC-MS (retention time: 2.137 min.), MS m/z 476 (MPT*").
Step 2:
To a solution of above carboxylic acid (5.0 mg, 0.0085 mmol) in CHsCN (5 mL) was added (1R, 2S) (l-cyclopropanesulfonyl-aminocarbonyl-2-vinyl-cyclo-propyl)-carbamic acid hydrochloride (3.4 mg, 0.0127 mmol), DffiA (0.007 mL, 0.0424 mmol) and the coupling reagent HOBt (1.9 mg, 0.0127 mmol) and HBTU (4.8 mg, 0.0127 mmol). The solution was stirred at it. overnight. Then it was concentrated, washed with water and extracted with ethyl acetate twice. The combined organic layers were washed with brine, dried over MgSC>4 and concentrated. It was then purified by Prep. HPLC column to give yellowish oil as TFA salt (Compound 350). (2.6mg, 38% yield)
!H NMR(CD3OD, 400 MHz) 6 0.99-1.07 (m, 11 H), 1.19 (m, 2 H), 1.37 (dd, 7=9.54, 5.63 Hz, 1 H), 1.87 (dd, 7=8.07 Hz, 5.38 Hz, 1 H), 2.10-2.25 (m, 3 H), 2.91 (m, 1 H), 3.03 (m, 1 H), 3.48 (s, 3 H), 3.92-4.02 (m, 2 H), 4.30 (s, 1 H), 4.32-4.45 (m, 3 H), 5.11 (dd, 7=10.27,1.22 Hz, 1 H), 5.28 (d, 7=17.11 Hz, 1 H), 5.69 (m, 1 H), 7.30-7.38 (m, 2 H), 7.66 (d, 7=2.45 Hz, 1 H), 7.92 (m, 1 H), 7.95 (m, 1 H), 8.48 (d, 7=6.85 Hz, 1H). LC-MS (retention time: 2.067 min.), MS m/z 688 (MH"").
Examole 351: Preoaration of Comoound 351
Compound 351
Compound 351 was prepared by following scheme of Example 350, except that 3-furanboronic acid was used in the place of 2-thiopheneboronic acid in step 1.
To a solution of intermediate 8 from Example 348 (20 mg, 0.0423 mmol) in DMF (2 mL), 3-furanboronic acid (6.2 mg, 0.055 mmol), tetfakis(triphenylphosphine) palladium (2.4 mg, 0.00212 mmol) and barium hydroxide (40 mg, 0.127 mmol) were added. The reaction mixture was heated at 150°C in Smith microwave reactor for 30 min. Then it was filtered and washed with methanol. The filtrate was concentrated and purified by Prep.HPLC to give yellowish oil as product (12 mg, 49% yield) LC-MS (retention time: 1.937 min.), MS m/z 460 (MH*).
Compound 351
Step 2:
To a solution of above carboxylic acid (5.0 mg, 0.0209 mmol) in CH3CN (5 mL) was added (1R, 2S) (l-cyclopropanesulfonyl-aminocarbonyl-2-vinyl-cyclo-propyl)-carbamic acid hydrochloride (8.4 mg, 0.0314 mmol), DffiA (0.018 mL, 0.1O46 mmol) and the coupling reagent HOBt (4.8 mg, 0.0314 mmol) and HBTU (11.9 mg, 0.0314 mmol). The solution was stirred at rt. overnight. Then it was concentrated, washed with water and extracted with ethyl acetate twice. The combined organic layers were washed with brine, dried over MgSCU and concentrated. It was then purified by Prep. HPLC column to give yellowish oil as TFA salt (Compound 351). (4.0 mg, 24% yield).
'HNMR(CD3OD, 400 MHz) 5 1.00-1.08 (m, 11 H), 1.21 (m, 2 H), 1.37 (dd, 7=8.80, 5.62 Hz, 1 H), 1.87 (dd, 7=8.32 Hz, 5.38 Hz, 1 H), 2.11-2.24 (m, 3 H), 2.91 (m, 1 H), 3.03 (m, 1 H), 3.49 (s, 3 H), 3.91-4.03 (m, 2 H), 4.29 (s, 1 H), 4.35-4.46 (m, 3 H), 5.12 (dd, 7=10.27, 1.47 Hz, 1 H), 5.28 (d, 7=17.12 Hz, 1 H), 5.69 (m, 1 H), 7.11 (m, 1 H), 7.38 (dd, .7=7.10, 2.69 Hz, 1 H), 7.71 (d, 7=2.69 Hz, 1 H), 7.81 (m, 1 H), 8.48 (s, 1 H), 8.50 (d, 7=7.09 Hz, 1 H). LC-MS (retention time: 1.410 min.), MS m/z 672.(MH*).
Example 352: Preparation of Compound Compound 352
Compound 352 was prepared by following scheme 2 and scheme 3 of Example 348, except that 2,6-dibromopyridine was used in the place of 2-bromo-4-chIoro-pyridine in step 1 of scheme 2.
Step 1: (Scheme 2, step 1)
To a solution of intermediate 7 from Example 348 (270 mg, 1.1 mmol) in DMSO (10 mL), potassium t-butoxide (309 mg, 2.75 mmol) was added. The reaction mixture was stirred at it for Ihr. Then 2,6-dibromopyridine (313 mg, 1.32 mmol) was added. The reaction mixture was stirred at it for overnight. Then it was quenched with water and washed with ethyl acetate. The aqueous layer was separated and acidified with IN HC1 solution to pH=3. Extracted with ethyl acetate twice and the organic layers were combined and dried (MgSC^). Evaporation of solvent gave an orange oil. It was then dissolved in methanol and HC1 (gas) was bubbled through for 2 min at -78°C. Then the reaction mixture was warmed to it and stirred for overnight. Evaporation of solvent gave an orange oil as crude to carry on. LC-MS (retention time: 1.480 min.), MS m/z 315
Step 2: (Scheme 2, step 2)To a solution of crude 4-(6-Bromo-pyridin-2-yloxymethyl)-pyrrolidine-2-carboxylic acid methyl ester in CH3CN (20 mL) was added 2-methoxycarbonylamino-3,3-dimethyl-butyric acid (312 mg, 1.65 mmol), DEEA (1.15 mL, 6.6 mmol) and the coupling reagent HOBt (252 mg, 1.65 mmol) and HBTU (626 mg, 1.65 mmol). The solution was stirred at it. overnight. Then it was concentrated, washed with water and extracted with ethyl acetate twice. The combined organic layers were washed with brine, dried over MgSC>4 and concentrated. It was then purified by flash column chromatography (silica gel, 1:1 hexanesrethyl acetate) to give a colorless oil as product. (340 mg, 63% yield two steps)
'H NMR (CD3OD, 400 MHz) 5 1.03 (s, 9 H), 2.10-2.24 (m, 2 H), 2.84 (m, 1H), 3.55 (s, 3 H), 3.70 (s, 3 H), 3.83 (m, 1 H), 3.94 (m, 1 H), 4.20-4.29 (m, 2 H), 4.31 (s, 1 H), 4.59 (dd, 7=8.80, 5.13 Hz, 1 H), 6.76 (d, 7=8.07 Hz, 1 H) 7.11 (d, 7=7.58 Hz, 1 H), 7.53 (t, 7=7.83 Hz, 1 H). LC-MS (retention time: 1.820 min.), MS m/z 486 (MET1").
Step 3: (Scheme 2, step 3)intermediates
To a solution of 4-(6-Bromo-pyridin-2-yloxymethyl)-l-(2-methoxycarbonylamino-3,3-dimethyl-butyryl)-pyrrolidine-2-carboxylic acid methyl ester (330 mg, 0.679 mmol) in THF (28 mL), methanol (15 mL) and water (5 mL) mixture, lithium hydroxide monohydrate (427 mg, 10.18 mmol) was added. The reaction mixture was
stirred at rt. for 2 days. Then it was concentrated and acidified with IN HC1 solution
to pH=3 to 5. The white solid was collected as product (intermediate 9) (310 mg,
97% yield).
'H NMR (CD3OD, 500 MHz) 6 1.06 (s, 9 H), 2.18-2.25 (m, 2 H), 2.88 (m, 1 H), 3.57
(s, 3 H), 3.84 (m, 1 H), 3.96 (m, 1 H), 4.25 (m, 1 H), 4.28-4.35 (m, 2 H), 4.58 (m, 1
H), 6.79 (d, 7=7.94 Hz, 1 H), 7.13 (d, 7=7.32 Hz, 1 H), 7.55 (m, 1 H).
LC-MS (retention time: 3.030 min.), MS m/z 472 (MH"1").
To a solution of intermediate 9 (10 mg, 0.0212 mmol) in CH3CN (5 mL) was added (1R, 2S) (l-cyclopropanesulfonyl-aminocarbonyl-2-vinyI-cyclo-propyl)-carbamic acid hydrochloride (8.5 mg, 0.00318 mmol), DIE A (0.018 mL, 0.106 mmol) and the coupling reagent HOBt (4.9 mg, 0.0318 mmol) and HBTU (12.1 mg, 0.0318 mmol). The solution was stirred at rt overnight. Then it was concentrated, washed with water and extracted with ethyl acetate twice. The combined organic layers were washed with brine, dried over MgSC>4 and concentrated. It was then purified by Prep. HPLC column to give yellowish film as TFA salt (Compound 352). (10.2 mg, 60% yield).
'H NMR(CD3OD, 400 MHz) 5 1.00-1.06 (m, 11 H), 1.20 (m, 2 H), 1.37 (dd, 7=9.54 Hz, 5.63 Hz, 1 H), 1.86 (dd, 7=8.07 Hz, 5.38 Hz, 1 H), 2.05 (m, 1 H), 2.12-2.25 (m, 2 H), 2.86-2.94 (m, 2 H), 3.54 (s, 3 H), 3.87 (m, 1 H), 3.94 (m, 1 H), 4.18-4.27 (m, 2 H), 4.33 (s, 1 H), 4.37 (m, 1 H), 5.11 (dd, 7=10.27,1.72 Hz, 1 H), 5.28 (dd, 7=17.12,
1.47 Hz, 1 H), 5.70 (m, 1 H), 6.76 (d, 7=8.32 Hz, 1 H), 7.11 (d, 7=7.33 Hz, 1H), 7.53
(t, 7=7.82 Hz, 1H).
LC-MS (retention time: 1.837 min.), MS m/z 684 (MH*).
Example 353: Preparation of Compound 353
Compound 353 was prepared hy following scheme of Example 347. except that intermediate 9 from Example 352 was used in the place of intermediate 6 from Example 346 in step 1.
To a solution of intermediate 9 (25 mg,. 0.053 mmol) in DMF (1 niL), 3-thiopheneboronic acid (8.8 mg, 0.0688 mmol), tetrakis(triphenyiphosphine) palladium (3.1 mg, 0.00265 mmol) and 2M Na2CO3 solution (0.080 mL, 0.159 mmol) were added. The reaction mixture was heated at 110°C for overnight Then it was filtered and washed with methanol. The filtrate was concentrated and purified by Prep.HPLC to give brownish oil as product (15 mg, 48% yield) 'H NMR (CD3OD, 500 MHz) 5 1.06 (s, 9 H), 2.20-2.31 (m, 2 H), 2.94 (m, 1 H), 3.55 (s, 3 H), 3.91 (m, 1 H), 3.98 (m,l H), 4.34 (s, 1 H), 4.37-4.46 (m, 2 H), 4.61 (dd, 7=8.85, 5.19 Hz, 1 H), 6.77 (d, 7=8.24 Hz, 1 H), 7.39 (d, 7=7.32 Hz, 1 H), 7.48 (dd, 7=5.19, 3.05 Hz, 1 H), 7.68 (dd, 7=4.88, 1.22 Hz, 1 H), 7J7(t, 7=7.93 Hz, 1H), 8.04 (m, 1 H). LC-MS (retention time: 1.857 min.), MS m/z 476 (MH*).
To a solution of l-(2-Methoxycarbonylamino-3,3-dimethyl-butyryl)-4-(6-thiophen-3-yl-pyridin-2-yloxymethyl)-pyrroIidine-2-carboxyIic acid (15 mg, 0.0254 mmoJ) in CHaCN (5 mL) was added (1R, 2S) (l-cyclopropanesuIfonyl-aminocarbonyl-2-vinyl-cyclo-propyl)-carbamic acid hydrochloride (10.2 mg, 0.0382 mmol), DffiA (0.022 mL, 0.127 mmol) and the coupling reagent HOBt (5.8 mg, 0.0382 mmol) and HBTU (14.5 mg, 0.0382 mmol). The solution was stirred at it. overnight. Then it was
concentrated, washed with water and extracted with ethyl acetate twice. The
combined organic layers were washed with brine, dried over MgSCU and
concentrated. It was then purified by Prep. HPLC column to give yellowish film as
TFA salt (Compound 353). (6 mg, 29% yield)
'H NMR(CD3OD, 400 MHz) 6 1.00-1.06 (m, 11 H), 1.20 (m, 2 H), 1.36 (dd, 7=9.29,
5.38 Hz, 1 H), 1.86 (dd, 7=8.07 Hz, 5.38 Hz, 1 H), 2.07 (m, 1 H), 2.16-2.25 (m, 2 H),
2.87-2.99 (m, 2 H), 3.54 (s, 3 H), 3.87-3.99 (m, 2 H), 4.31-4.44 (m, 4 H), 5.11 (dd,
7=10.27,1.46 Hz, 1 H), 5.28 (d, 7=17.12 Hz, 1 H), 5.70 (m, 1 H), 6.67 (d, 7=8.31 Hz,
1 H), 7.33 (d, 7=7.34 Hz, 1 H), 7.44 (dd, 7=4.89, 2.93 Hz, 1 H), 7.63-7.70 (m, 2 H),
7.99 (m, 1 H).
LC-MS (retention time: 2.770 min.), MS m/z 688 (MH*).
Example 354: Preparation of Compound 354
Compound 354 was prepared by following scheme of Example 347, except that intermediate 9 from Example 352 was used in the place of intermediate 6 from Example 346 and phenyl boronic acid was used in the place of 3-thiopheneboronic acid in step 1.
To a solution of intermediate 9 (20 ing, 0.0423 mmol) in DMF (1 mL), phenyl boronic acid (6.7 mg, 0.0688 mmol), tetrakis(triphenylphosphine) palladium (2.4 mg, 0.00212 mmol) and Cs2CO3 (41 mg, 0.127 mmol) were added. The reaction mixture was heated at 110°C for overnight. Then it was filtered and washed with methanol. The filtrate was concentrated and purified by Prep.HPLC to give yellowish oil as product (12mg, 49% yield) LC-MS (retention time: 2.733 min.), MS m/z 470 (MH*).
To a solution of l-(2-Methoxycarbonylamino-3,3-dimethyl-butyryl)-4-(6-phenyl-pyridin-2-yloxymethyl)-pyrrolidine-2-carboxylic acid (12 mg, 0.0206 mmol) in CH3CN (5 mL) was added (IR, 2S) (l-cyclopropanesulfonyl-aminocarbonyl-2-vinyl-cyclo-propyl)-carbamic acid hydrochloride (8.2 mg, 0.0308 mmol), DIEA (0.018 mL, 0.1028 mmol) and the coupling reagent HOBt (4.7 mg, 0.0308 mmol) and HBTU (11.7 mg, 0.0308 mmol). The solution was stirred at rt. overnight. Then it was concentrated, washed with water and extracted with ethyl acetate twice. The combined organic layers were washed with brine, dried over MgSCU and concentrated. It was then purified by Prep. HPLC column to give a white solid as TFA salt (Compound 354). (1.5 mg, 9% yield)
'H NMR(CD3OD, 400 MHz) 8 1.00-1.07 (m, 11 H), 1.20 (m, 2 H), 1.36 (m, 1 H), 1.85 (m, 1 H), 2.09 (m, 1 H), 2.17-2.25 (m, 2 H), 2.87-3.00 (m, 2 H), 3.52 (s, 3 H), 3.84-4.00 (m, 2 H), 4.33-4.44 (m, 4 H), 5.11 (dd, 7=10.27, 1.71 Hz, 1 H), 5.28 (d , 7=17.12, 1.22 Hz, 1 H), 5.70 (m, 1 H), 6.71 (d, 7=8.31 Hz, 1 H), 6.78 (m, 1 H), 7.34-7.44 (m, 3 H), 7.74 (m, 1 H), 7.95 (m, 1 H), 8.01 (d, J=8.31 Hz, 1H). LC-MS (retention time: 3.553 min.), MS m/z 682 (MET).
Compound 355
Compound 354 was prepared by following scheme of Example 347, except that intermediate 9 from Example 352 was used in the place of intermediate 6 from
Example 346 and 3-furan boron ic acid was used in the place of 3-thiopheneboronic acid in step 1.
Step 1:
To a solution of intermediate 9 (20 mg, 0.0423 mmol) in DMF (1 mL), 3-furan boronic acid (6.2 mg, 0.055 mmol), tetrakis(triphenylphosphine) palladium (2.4 mg, 0.002115 mmol) and 2M Na2CO3 solution (0.064 mL, 0.127 mmol) were added. The reaction mixture was heated at 110°C for 2 days. Then it was filtered and washed with methanol. The filtrate was concentrated and purified by Prep.HPLC to give yellowish oil as product. (7.0 mg, 29% yield)
To a solution of above carboxylic acid (6.0 mg, 0.0109 mmol) in CH3CN (5 mL) was added (1R, 2S) (l-cyclopropanesulfonyl-aminocarbonyl-2-vinyl-cyclo-propyl)-carbamic acid hydrochloride (4.4 mg, 0.0163 mmol), DffiA (0.0095 mL, 0.0544 mmol) and the coupling reagent HOBt (2.5 mg, 0.0163 mmol) and HBTU (6.2 mg, 0.0163 mmol). The solution was stirred at it. overnight. Then it was concentrated, washed with water and extracted with ethyl acetate twice. The combined organic layers were washed with brine, dried over MgSC>4 and concentrated. It was then purified by Prep. HPLC column to give yellowish film as TFA salt (Compound 355). (1.5 mg, 18% yield)
'H NMR(CD3OD, 400 MHz) 8 0.98-1.07 (m, 11 H), 1.20 (m, 2 H), 1.35 (dd, .7=9.54, 5.87 Hz, 1 H), 1.86 (dd, 7=8.07 Hz, 5.62 Hz, 1 H), 2.06 (m, 1 H), 2.15-2.25 (m, 2 H), 2.85-2.98 (m, 2 H), 3.55 (s, 3 H), 3.89 (m, 1 H), 3.95 (m, 1 H), 4.28-4.42 (m, 4 H), 5.11 (dd, 7=10.27, 1.71 Hz, 1 H), 5.28 (dd, 7=17.12, 1.22 Hz, 1 H), 5.69 (m, 1 H), 6.63 (d, 7=8.07 Hz, 1 H), 6.90 (m, 1 H), 7.16 (d, 7=7.33 Hz, 1 H), 7.53 (m, 1 H), 7.63 (m, 1 H), 8.08 (s, 1 H). LC-MS (retention time: 3.340 min.), MS m/z 672 (MET).
Compound 356
Compound 356 was prepared by following scheme of Example 350, except intermediate 9 from Example 352 was used in the place of intermediate 8 from Example 348 in step 1.
To a solution of intermediate 9 (20 mg, 0.0423 mmol) in DMF (2 mL), 2-thiopheneboronic acid (7.0 mg, 0.055 mmol), tetrakis(triphenylphosphine) palladium (2.4 mg, 0.00212 mmol) and barium hydroxide (40 mg, 0.127 mmol) were added. The reaction mixture was heated at 150°C in Smith microwave reactor for 30 min. Then it was filtered and washed with methanol. The filtrate was concentrated and purified by Prep.HPLC tp give brownish oil as product. (13.0 mg, 52% yield)
'H NMR (CD3OD, 400 MHz) 8 1.03 (s, 9 H), 2.18-2.25 (m, 2 H), 2.93 (m, 1 H), 3.55 (s, 3 H), 3.83 (m, 1 H), 3.98 (m, 1 H), 4.34 (s, 1 H), 4.38 (m, 2 H), 4.58 (dd, 7=8.05, 5.14 Hz, 1 H), 6.63 (d, 7=8.07 Hz, 1 H), 7.07 (dd, 7=4.89, 3.67 Hz, 1 H), 7.33 (d, 7=7.34 Hz, 1 H), 7.42 (d, 7=5.14 Hz, 1 H), 7.60-7.66 (m, 2 H). LC-MS (retention time: 3.393 min.), MS m/z 476 (MH*).
Step 2:
To a solution of l-(2-Methoxycarbonylamino-3,3-dimethyl-butyryl)-4-(6-thiophen-2-yl-pyridin-2-yloxymethyl)-pyrrolidine-2-carboxylic acid (11.5 mg, 0.0195 mmol) in CH3CN (5 mL) was added (1R, 2S) (l-cyclopropanesulfonyl-aminocarbonyl-2-vinyl-cyclo-propyl)-carbamic acid hydrochloride (7.8 mg, 0.0293 mmol), DIEA (0.017 mL, 0.0975 mmol) and the coupling reagent HOBt (4.5 mg, 0.0293 mmol) and HBTU (11.1 mg, 0.0293 mmol). The solution was stirred at it. overnight. Then it was concentrated, washed with water anrl pyfrarteri with pthvl s*v»tat*» f\i/ir/» Th*»
combined organic layers were washed with brine, dried over MgSC>4 and
concentrated. It was then purified by Prep. HPLC column to give an off-white solid
as TFA salt (Compound 356). (8.5 mg, 54% yield)
'H NMR(CD3OD, 400 MHz) 5 0.99-1.06 (m, 11 H), 1.21 (m, 2 H), 1.36 (dd, 7=9.54,
5.38 Hz, 1 H), 1.86 (dd, 7=8.07 Hz, 5.62 Hz, 1 H), 2.06 (m, 1 H), 2.15-2.25 (m, 2 H),
2.87-2.99 (m, 2 H), 3.54 (s, 3 H), 3.89 (m, 1 H), 3.96 (m, 1 H), 4.30-4.44 (m, 4 H),
5.11 (dd, 7=10.51, 1.71 Hz, 1 H), 5.28 (dd, 7=17.11, 1.22 Hz, 1 H), 5.70 (m, 1 H),
6.62 (d, 7=8.07 Hz, 1 H), 7.07 (dd, 7=4.89, 3.66 Hz, 1 H), 7.33 (d, 7=7.59 Hz, 1 H),
7.42 (d, 7=4.89 Hz, 1H), 7.60-7.66 (m, 2 H).
LC-MS (retention time: 1.967 nrin.), MS m/z 688 (MH+).
To a solution of (2S, 4R) Fmoc-4-amino-l-boc-pyrrolidine-2-carboxylic acid (400 mg, 0.884 mmol) in acetonitrile (15 mL), five drops of pyrrolidine was added. The reaction mixture was stirred at rt for 3hr. Then it was concentrated and put on high vacuum to give crude 4-amino-l-boc-pyrrolidine-2-carboxylic acid. In another round-bottomed flask, a solution of Pdadbas (40 mg, 5% mol)and racemic-BINAP (56 mg, 10% mol) was stirred under nitrogen in degassed toluene (8 mL) at rt for Ih. Then 1-chloroisoquinoline (216 mg, 1.326 mmol) and sodium t-butoxide (340 mg, 3.536 mmol) were added and the reaction mixture was stirred for 30 min. Then 4-amino-i-boc-pyrrolidine-2-carboxylic acid was added and the reaction mixture was heated under reflux for Ih. Water was added to quench the reaction and the aqueous layer was separated and filtered through filter paper. It was then concentrated and purified by Prep. HPLC to give coupled product as TFA salt. (165 mg, 40% yield) 'H NMR (CD3OD, 400 MHz) 5 1.44 (m, 9H), 2.51-2.74 (m, 2H), 3.64 (m, IH), 4.01 (m, IH), 4.49 (m, IH), 4.64 (m, IH), 7.30 (d, J=6.85 Hz, IH), 7.58 (d, J=6.85 Hz, IH), 7.79(m, IH), 7.91-7.99 (m, 2H), 8.56 (d, J=8.56 Hz, IH). LC-MS (retention time: 1.707 min.), MS m/z 358 (MH*).
To a solution of 4-(Isoquinolin-I-ylamino)-pyrrolidine-l,2-dicarboxylic acid 1-tert-
butyl ester (115 mg, 0.244 mmol) in CH3CN (10 mL) was added (1R, 2S) (1-
cycIopropanesulfonyl-aminocarbonyl-2-vinyl-cyclo-propyl)-carbamic acid
hydrochloride (97 mg, 0.366 mmol), DIEA (0.255 mL, 1.464 mmol) and the coupling
reagent HOBt (56 mg, 0.366 mmol) and HBTU (139 mg, 0.366 mmol). The solution
was stirred at rt. overnight. Then it was concentrated, washed with water and
extracted with ethyl acetate twice. The combined organic layers were washed with
brine, dried over MgSCU and concentrated to give yellow oil. It was purified by Prep.
HPLC column to a yellowish solid as TFA salt (112 mg, 67% yield).
'HNMR (CD3OD, 400 MHz) 5 1.05 (m, 2H), 1.20 (m, 2H), 1.40-1.48 (m, 10H), 1.87
(dd, J=8.19, 5.50 Hz, 1H),2.23 (m, 1H), 2.39 (m, 1H), 2.50 (m, 1H),2.93 (m, 1H),
3.65 (m, 1H), 4.08 (m, 1H), 4.33 (t, J=7.09 Hz, 1H), 4.69 (m, 1H), 5.12 (d, J=10.27
Hz, 1H), 5.29 (d, J=17.12 Hz, 1H), 5.74 (m, 1H), 7.31 (d, J=6.85 Hz, 1H), 7.60 (d,
J=7.09 Hz, 1H), 7.80(m, 1H), 7.93-8.00 (m, 2H), 8.56 (d, J=8.19 Hz, 1H).
LC-MS (retention time: 2.023 min.), MS m/z 570 (MH1").
2-(l-Cyclopropanesulfonylaminocarbonyl-2-vinylcyclopropyl-carbamoyl)-4-(isoquinolin-l-ylamino)-pyrrolidine-l-carboxylic acid tert-butyl ester (31 mg, 0.0453 mmol) was dissolved in 4N HC1 in dioxane (1.5 mL) and stirred at it. for 2 hr. Evaporation of solvent gave yellowish oil as bis hydrochloride salt. To a solution of bis hydrochloride salt in CHjCN (5 mL) was added N-boc-L-t-leucine(11.5 mg, 0.0498 mmol), DDEA (0.047 mL, 0.272 mmol) and the coupling reagent HOBt (10.4
mg, 0.068 mmol) and HBTU (25.8 mg, 0.068 mmol). The solution was stirred at rt.
overnight. Then it was concentrated, washed with water and extracted with ethyl
acetate twice. The combined organic layers were washed with brine, dried over
MgSO4 and concentrated to give yellowish oil. It was purified by Prep. HPLC
column to give an off-white solid as final product (Compound 357).(9 mg, 29%
yield)
'H NMR (CD3OD, 400 MHz) 5 0.98 (m, 2H), 1.05 (s, 9H), 1.20 (m, 2H), 1.36-1.43
(m, 10H), 1.84 (m, 1H),2.10-2.30 (m, 2H), 2.52 (m, 1H),2.90 (m, 1H), 4.07 (m, 1H),
4.17-4.27 (m, 2H), 4.47 (m, 1H), 4.79 (m, 1H), 5.07 (d, J=9.29 Hz, 1H), 5.24 (d,
J=16.87 Hz, 1H), 5.72 (m, 1H), 6.62 (m, 1H), 6.98 (d, J=6.11 Hz, 1H), 7.47 (m, 1H),
7.62(m, 1H), 7.69 (d, J=8.07 Hz, 1H), 7.84 (d, J=5.87 Hz, 1H), 8.20 (d, J=8.56 Hz,
1H).
LC-MS (retention time: 2.043 min.), MS m/z 683 (MET).
Section H:
LC-MS condition for section H
Columns: (Method A) - YMC ODS S7 CIS 3.0x50 mm (Method B) - YMC ODS-A S7 C18 3.0x50 mm (Method C) - YMC S7 C18 3.0x50 mm (Method D) - YMC Xterra ODS S7 3.0x50 mm (Method E) - YMC Xterra ODS S7 3.0x50 mm (Method F) - YMC ODS-A S7 C18 3.0x50 mm (Method H) - Xterra S7 3.0x50 mm (Method I) - Xterra S7 CIS 3.0x50 mm (Method G) - YMC CIS S5 4.6x50 mm (Method J) - Xterra ODS S7 3.0x50 mm (Method K) - YMC ODS-A S7 C18 3.0x50 mm
Gradient: 100% Solvent A/0% Solvent B to 0% Solvent A/100% Solvent B Gradient time: 2 min. (A, B, D, F, G, H, I); 8 min. (C, E); 4 min (J); 3 min (K)
Hold time: 1 min. (A, B, D, F, G, H, I, J, K); 2 min. (C, E)
Flow rate: 5 mL/min (A, B, C, D, E, F, G)
Flow rate: 4 mL/min (J, K)
Detector Wavelength: 220 nm
Solvent A: 10% MeOH / 90% H20 / 0.1% TFA
Solvent B: 10% H2O / 90% MeOH / 0.1% TFA.
Example 370: Preparation of Compound 370
N
Step 1:
A solution of (l#,2S)/(lS,2ft)-l-amino-2-vinylcyclopropane carboxylic acid ethyl ester hydrochloride (2.54 g, 12 mmol) in CH3CN (70 mL) was treated with a solution of diisopropylethylamine (9.5 mL, 67 mmol), [(4tf)-(2-methoxycarbonyl-7-methoxylquino!ine-4-oxo)-5-proline] (5.9 g, 13.2 mmol), and TBTU (3.89 g, 12.21 mmol) in CHsCN (50 mL). The reaction mixture was stirred for 14 h and concentrated. The residue dissolved in EtOAc was repeatedly washed with NaHCOa (aq.), brine, dried (MgSCU), and concentrated. The residue was purified over Biotage 65M column (EtOAc/hexane: 45-100%) to provide the high Rf stereo isomer (Boc-P2[(4^)-(2-methoxycarbonyl-7-methoxylquinoline-4-oxo)-5-proline]-Pl(lJR,25
Vinyl Acca) Acid ethyl ester 2.0 g (52%) as a white solid: 'H NMR (methanol-dt) 8 ppm 1.24 (t, 7=7.02 Hz, 3 H), 1.38 (m, 11 H), 1.76 (m, 1 H), 2.21 (m, 1 H), 2.45 (m, 1 H), 2.71 (m, 1 H), 3.92 (m, 2 H), 3.96 (s, 3 H), 4.03 (s, 3 H), 4.16 (q, 7=7.22Hz, 2 H), 4.42 (m, 1 H), 5.10 (m, 1 H), 5.30 (m, 1 H), 5.44 (s, 1 H), 5.77 (m, 1 H), 7.27 (d, /=9.16 Hz, 1 H), 7.48 (s, 1 H), 7.52 (s, 1 H), 8.05 (s, 1 H).
Step 2:
A solution of the high Rf product (3.16g, 5.40 mmol) of Step 1 of Example 370 {Boc-P2[(4^?)-(2-methoxycarbonyl-7-methoxylquinoline-4-oxo)-5-proline]-P1(IR,2S Vinyl Acca) COOEt} at 0 °C dissolved in MeOH/THF (1/1,13.2 mL) was treated with aqueous 1.0 N NaOH (5.5 mL, 5.5 mmol), stirred for 1 h, neutralized by the addition of AcOH. The solvent was removed in vacuo. The residue was redissolved in THF/CH2C12 (1/1, 150 mL), dried (MgSO4) and concentrated in vacuo to provide the product which was directly used in next step: LC-MS (retention time: 1.53 Method D), MS m/z 570 (M++l).
Step 3:
To a solution of the product (assumed at 5.4 mmol) of step 2 example 370 at 0°C dissolved in THF (35 mL) was added a solution of fresh made CH2N2(30 mmol) in EtiO (80 mL). The reaction mixture was stirred at the temperature for 0.5 h, and stirred at it for 18.5 h. After bubbling nitrogen for 1 h to the reaction mixture, the solution was removed in vacuo. The residue redissolved in EtOAc (1 L) was washed with saturated NaHCO3 (aq.), (2x200 mL), brine (100 mL), and dried (MgS04). The solvent was removed in vacuo to afford the product 3.10 g (97% two steps): LC-MS (retention time: 3.06, Method J), MS m/z 594
Step 4:
To a solution of the product (3.03g, 5.10 mmol) of step 3 of example 370 { Boc-P2[(4/?)-(2- diazoacetyl-7-methoxylquinoline-4-oxo)-S-proline]-Pl (IR,2S Vinyl Acca) COOEt} at 0°C dissolved in THF (110 mL) was added 2 mL of 48% HBr. The mixture was stirred for 1 h, partitioned between EtOAc (500 mL) and saturated NaHCO3 (aq.) (100 mL). The EtOAC layer was separated, dried (MgSO4). The solvent was removed to afford the product (3.12g, 95%): LC-MS (retention time: 1.56 Method D). MS m/z 648 (MM), MS m/z 646 (M'-l).
Step 5:
The product (1.0 g, 1.54 mmol) of step 4 of example 370 {Boc-P2[(4tf)-(2-bromoacetyl-7-methoxylquinoline-4-oxo)-S-proline]-Pl(l/?,2S Vinyl Acca) COOEt} was treated with isopropylthiourea (0.365 g, 3.09 mmol) in isopropyl alcohol (57 mL) for 2 h, and then the solvent was removed. The residue dissolved in aqueous 1.0 N HC1 (30 mL) and EtOAC (200 mL) was adjusted pH to 7 by addition of 1.0 N NaOH (aq.). The aqueous layer was extracted with EtOAc (2x100 mL) and the combined extract was dried (MgSO4), concentrated. The residue was purified by over Biotage 40+M column (EtOAc-hexanes: 30-100%) to afford the product 870 mg (84%) and ready for the next step.
Step 6:
The product (0.250 g, 0.375 mmol) of step 5 of example 370 (Boc-P2{(4/?)-[2-(2-isopropylaminothiazol-4-yl)-7-methoxylquinoline-4-oxo]-5-proline}-Pl(l/?,25
Vinyl Acca) COOEt} was treated with 4N HCl/dioxane (2.5 mL, 10 mmol) for 2.5 h and concentrated in vacuo. To the residue was added N-methylmorphoIine (0.206 mL, 1.875 mmol) in DMF (3 mL), N-Boc-L-ter/-leucine (0.117 g, 0.506 mmol), and HATU (0.192 g, 0.506 mmol). The mixture was stirred ovenite and partitioned between EtOAc and pH 4.0 buffer. The EtOAc layer was washed with water, NaHCO3 (aq.), dried (MgSO4), concentrated. The residue was purified over a Biotage 40M column (MeOH-CH2Cl2: 0-8%) to afford the product 0.289 g (99%): LC-MS (retention time: 2.53, Method K), MS m/z 779 (MM).
Step 7:
To a suspension of the product of Step 6 (274 mg, 0.352 mmol) of Example 370 {BOCNH-P3(L-f-BuGly)- {[2-(2-isopropylaminothiazol-4-yl)-7-methoxylquinoline-4-oxo]-S-proline} -P1(1/?,2S Vinyl Acca)-COOEt} inTHF(10.6 mL), CH3OH (2.6 mL), and H2O (5.3 mL) was added LiOH (0.068 g, 2.86 mmol). The reaction mixture was stirred for 24, adjusted to pH 6, removed the organic solvents in vacuo. The aqueous residue was acidified to pH4, and extracted with CH2Ch repeatedly. Combined organic solvent was dried (MgSO4), and concentrated in vacuo to afford the desired product 255 mg (95%): LC-MS (retention time: 2.58, Method K), MS m/z 751 (MM).
(Figure Removed)A solution of GDI (0.024 g, 0.15 mmol) and the product of Step 7 of Example 370 (0.0683 g, 0.09 mmol) (BOCNH-P3(L-r-BuGly)- {[2- (2-isopropylaminothiazol-4-yl)-7-methoxylquinoline-4-oxo]-S-proline} -Pl(lfl,2S Vinyl Acca)-COOH} in THF (2 mL) was refluxed for 60 min and allowed to cool down to rt. Cyclopropanesulfonamide (0.022 g. 0.18 mmol) was added followed by the addition of neat DBU (0.027 mL, 0.18 mmol). The reaction was stirred for ovemite, worked
up by diluting with EtOAc and washed with pH 4.0 buffer, dried (MgSO,t), and concentrated. The residue was purified repeatedly by preparative HPLC (0-100% solvent B) and over 1000 nM preparative TLC plate from Analtech (20X40 cM) to afford 0.0032 g (4%) the desired product (Compound 370) as a pale yellow foam: LC-MS (Retention time: 1.71, method I) MS m/z 854
.
To a suspension of /V-Boc-cw-L-4-Hydroxyproline methyl ester (10 g, 40.7mmol) and 7-chloroquinolin-4-ol (8.73 g, 49.0 mmol) in THF (200 mL) cooled to 0 °C was added PPh3 (12.82 g, 48.9 mmol) and DIAD. (8.80 g, 42.13 mmol). The mixture was slowly allowed to warm to rt overnite, stirred at total of 30 h. The mixture was dissolved in EtOAc (800 mL), washed with IN aqueous HC1, 5% aqueous KaCOs (3X100 mL), brine (2 X 100 mL) and dried (MgSO4), and concentrated. The residue was purified several times over a Biotage 65M (MeOH-CHzCb: 0-10%) to afford cumulatively 10.57 g (68%) of the desired product as a glass: 'H NMR (CDC13) 8 1.40 (s, 9H), 2.33-2.42 (m, IH), 2.61-2.72 (m, IH), 3.75 (s, 3H), 3.91 (m, 2H), 4.45-
4.59 (m, IH), 5.13 (m, IH), 6.61-6.64 (m, IH), 7.41 (dd, 7=9,2 Hz, IH), 7.98 (d, J=2 Hz, IH), 8.03 (d, 7=9 Hz, IH), 8.67-8.71 (m, IH). LC-MS (retention time: 1.39, method D), MS m/e 407 (MM). Step 2:
To a solution of the product (10.57 g, 26.0 mmol) of Step 1 of Example 371 {BOC-Af-P2[(4/?)-(7-chloroquinoline-4-oxo) proline methyl ester} dissolved in MeOH (800 mL) cooled to 0 °C was added an aqueous IN NaOH solution (44.5 mL, 44.5 mmol). The mixture was warmed to it after 6 h, stirred overnite, and the pH adjusted to pH 7 using 1.0 N aqueous HC1. The solution was concentrated until only the water layer remained, the pH adjusted to 4 using 6N aqueous HC1 and the mixture was partitioned repeatedly with EtOAc (3x500 mL). The combined organic layers were dried (MgSO4) and concentrated to afford 10.16 g (100%) of the as a white solid. 'H NMR (DMSO-de) 5 1.32,1.34 (two s (retainers) 9H), 2.31-2.40 (m, IH), 2.58-2.69 (m, IH), 3.65-3.81 (m, 2H), 4.33-4.40 (m, IH), 5.34 (m, IH) 7.10-7.11 (m, IH), 7.57 (d, J=9 Hz, IH), 7.98 (s, IH), 8.09-8.14 (m, IH), 8.75 (d, 7=5 Hz, IH), 12.88 (bra, IH). 13C NMR (DMSO- do) 6 27.82,, 35.84, 51.52, 57.75, 76.03, 79.33, 102.95, 119.54, 123.86,126.34,127.24,134.49,149.32,152.88,153.25, 159.08,173.74. LC-
Step 3:
To a solution of the product (5.11 g, 13 mmol) of Step 2 of Example 371 (Boc-4(/?)-(7-chloroquinoline-4-oxo) proline}, the HC1 salt (3.48 g, 18.2 mmol) of vinyl Acca (existing as a 1:1 mixture of diastereoisomers (17?,25/15,27? where cyclopropyl carboxyethyl group is syn to vinyl moiety) and NMM (7.1 mL 65 mmol) in DMF (30 mL) was added HATU (6.92 g, 18.2 mmol). The mixture was stirred for 3 days. The reaction mixture was diluted with EtOAc (180 mL) and was partitioned with pH 4.0 buffer (3x100 mL). The organic layer was washed with saturated aqueous NaHCOs (2x50mL), water (2x50mL), and brine (2x50mL). The organic solution was dried (MgS04) and concentrated. The residue was purified over a Biotage 40M column (EtOAc-Hexanes: 50% to 100%) to afford 2.88 g of the product existing as a diastereomeric mixture. This mixture was partially separated using a Biotage 65M column (MeOH-EtOAc: 0% to 9%) to afford BOC-NH-P2[(4/?)-(7-chloroquinoline-4-oxo)-5-proline]-Pl(l/f,25 vinyl acca PI moiety)-COOEt as the initial eluted high
Rf isomer (1.20 g, 17.4%). 'H NMR (CDCWethanol-dO 6 1.16 (t, 7=7 Hz, 3H), 1.35 (s, 9H), 1.37-1.43 (m, IH), 1.76-1.84 (m, IH), 2.06-2.11 (m, IH), 2.35-2.45 (m, IH), 2.63 (m, IH), 3.72-3.93 (m, 2H), 4.02-4.15 (m, IH), 4.33-4.40 (ra, IH), 5.06 (d, 7=9 Hz, IH), 5.16 (m, IH), 5.24 (d, 7=17 Hz, IH), 5.63-5.70 (m, IH), 6.74 (m, IH), 7.39 (dd, 7=9,2 Hz, IH), 7.74-7.78 (m, IH), 7.89 (d, 7=2 Hz.l H), 7.97 (d,7=9 Hz ,1H), 8.60 (d, 7=5 Hz, IH). 'H NMR (methanol-du 60/40 Rotomers) 51.24 (t, J=7 Hz, 3H), 1.39,1.43 (2s, 9H, ratio 4:6), 1.71-1.74 (m, 0.4H), 178-1.81 (m,0.6H), 2.18-2.23 (m, IH), 2.65-2.69 (m, 0.4H), 2.71-2.76 (m, 0.6H), 3.88-3.96 (m, 2H), 4.11-4.18 (m, 2H), 4.39-4.45 (m, IH), 5.09-5.13 (m, IH), 5.28-5.33 (ra, IH), 5.37 (m, IH), 5.73-5.81 (m, IH), 7.05 (d,7=5 Hz, IH), 7.53 (d, 7=8.9 Hz, 1H),7.92 (s, IH), 8.12 (d, 7=8.9 Hz, IH), 8.70 (d, 7=5 Hz, IH). LC-MS (retention time: 1.54, method A) MS m/z 530 (JVT+1). The rest of the material (-1.66 g, 24%) was mixed fractions greatly enriched in the lower Rf isomer.
Step 4:
The product (0.65 g, 1.22 mmol) of step 3 of Example 371 {BOC-P2 [(4fl)-(7-
chloroquinoline-4-oxo)-S-proline]-Pl(l#,2S Vinyl Acca-CO2Et} was dissolved in 4N
HCI/dioxane (4.5ml, 18 mmol) and stirred for 1 h at rt. The reaction mixture was
concentrated and the crude product was directly used in next step: LC-MS (retention
time: 0.94, method A) LC-MS m/z 430 (M*+l).
Step 5:
To suspension of the product 1(.22 mmol) of step 4 Example 371 { Bis HC1 Salt of NH2-P2[(4/?)-(7-chloroquinoIine-4-oxo)-5-proline]-Pl(l^,25-VinylAcca)-COOEt), N-BOC-L-terr-leucine (BOC L-tBuGly) (0.34g, 1.47 mmol), DIPEA (1.0 ml, 5.74 mmol), HOBT.H2O (0.22g, 1.47 mmol) in CH2CI2 (15mL) was added HBTU(0.56g, 1.47 mmol) at it. The reaction mixture was stirred overnite, diluted with CH2Ch (50 mL), washed with pH 4.0 buffer (2x20 mL), saturated aqueous NaHCO3 (50 mL), brine (50mL), dried (MgSO*), and concentrated. The residue was purified over a Biotage 40 M column (EtOAc-Hexanes: 15% to 60%) to afford 607 mg (77%) of the product as a foam. 'H NMR (CDCb-methanol-d^ 6 1.00 (s, 9H), 1.19 (t, J=7 Hz, IH), 1.30 (s, 9H), 1.38 (m, IH), 1.78-1.83 (m, IH), 2.01-2.46 (m, 2H), 2.73-2.82 (m IH), 3.96-4.03 (m, IH), 4.04 (d, 7=10 Hz, IH), 4.11 (q, 7=7 Hz, 2H), 4.42 (d, /=12 Hz, IH), 4.68-4.73 (m, IH), 5.09-5.13 (m, IH), 5.23-5.31 (m, 2H), 5.67-5.79 (m, IH), 6.78 (d, J=9 Hz, IH), 7.38 (d, 7=9 Hz, IH), 7.70 (s, IH), 7.96 (s, IH), 8.08 (d, 7=9 Hz, IH), 8.68 (d, 7=5 Hz ,1H). LC-MS (retention time: 1.64, method A), MS m/z 643 (M++1). Step 6:
To a suspension of the product (207 mg, 0.32 mmol) of Step 5 of Example 371 {BOChJK P3(L t BuG!y)-P2[(4JK)-7-ch!oroquir,olinc-4-oxo)-1?-pro3ine3-Pl(l/?,2.S Vinyl Acca)-CO2Et} in THF(14 mL), CH3OH (2 mL), andH20 (8 mL) was added Li OH (62 mg, 2.60 mmol). The reaction mixture was stirred for one day, adjusted to neutral pH, and concentrated in vacuo until only the aqueous layer remained. The resulting aqueous residue was acidified to pH 4.0 by addition of 1.0 N aqueous HC1 and then saturated with solid NaCI. This aqueous mixture was extracted repeatedly with EtOAc (3X60 mL), the combined organic solvent was dried (MgjSC^) and concentrated in vacuo to afford 107 mg (54%) of the product {BOCNH-P3(L-/-BuGly)-P2[(47?)-(7-chloroquinoline-4-oxo)-S-prolineJ-Pl(l/?,25 Vinyl Acca)-CO2H} as a white solid. !H NMR (CDC13) 5 1.06 (s, 9H), 1.23 (2s, 9H), 1.31-1.43 (m IH), 1.63-1.70 (m, IH), 1.85-1.89 (m, IH), 2.19 (m, IH), 2.65-2.78 (m, IH), 4.03-4.10 (m, IH), 4.18-4.21 (m, IH), 4.55-4.62 (m, IH), 5.03-5.12 (m, IH), 5.23-5.31 (m, IH), 5.51 (m, IH), 5.88-5.95 (m, IH), 7.12 (m, IH), 7.47-7.50 (m, IH), 7.96 (m, IH), 8.26 (d, 7=9 Hz, IH), 8.75 (d, 7=5 Hz, IH). LC-MS (retention time: 1.46, method A), MS m/z 615 (MM).
Step 7:
To a solution of the tripeptide acid (0.0453 g, 0.074 mmol) of Step 6 Example 371 {BOCNH-P3(L-r-BuGly)-P2[(4/?)-(7-chloroquinoline-4-oxo)-5-proline]-Pl(l/?,25 Vinyl Acca)-CO2H} in THF (4 mL) was added GDI (17 mg, 0.10 mmol), and the resulting solution refluxed for 45 min and allowed to cool down to rt. Cyclopropylsulfonamide (0.013g, 0.10 mmol) was added in one portion before the addition of neat DBU (0.015 mL, 0.10 mmol). The reaction was stirred for 18 h, diluted with EtOAc (200mL) and washed pH 4.0 buffer (3x30mL), water (2x30 mL), brine (30mL), dried (MgSO4) and purified using one 20X40 cM 1000D Analtech PTLC plate (MeOH - CH2CJ2: 0 to 2%) to afford the desired product (Compound 371) as a foam (0.040g, 76%); JHNMR 8 0.95-1.23 (m, 4H), 1.03 (s, 9H), 1.19 (s, 9H), 1.40-1.43 (m, IH), 1.85 (dd, 7=8,5 Hz, IH), 2.12-2.20 (m ,1H), 2.43 (m, IH), 2.82 (m, IH), 4.07-4.19 (m, 2H), 4.51-4.57 (m, 2H), 5.07 (d, 7=10 Hz, IH), 5.25 (d, 7=17 Hz, IH), 5.85 (m, IH), 5.48 (s, IH), 7.09 (d, 7=5 Hz, IH), 7.45 (d, 7=9 Hz ,1H; 7.92 (m, IH), 8.20 (d, 7=9 Hz, IH), 8.72 (d, 7=5 Hz, IH); LC-MS (retention time: 1.52, method B), MS m/z 718 (MM). HRMS m/z (M+H)+ calcd for CuHsi 718.2677 found 718.2674.
To a solution of L-te/t-leucine (2 g, 15.25 mmol) dissolved in CH3CN (50 mL) was added TMSCN (7.06 mL, 56.41 mmol) and stirred for 15 min. The reaction mixture was heated to 75 °C for 30 min. Cyclopentyl chloroformate (2.83 g, 19.06 mmol) was
auucu to me icaiHiuu JIIIA.IUIC aiiu me icacuuu IUIALUIC was ncaicu ai ou \_ ovcunic, concentrated in vacuo. The residue was treated with MeOH (40 mL), stirred for 10 min, and concentrated in vacuo. The residue was adjusted pH to 8.5, and extracted with Et2O (2x200mL). The aqueous layer was acidified to pH 3 and extracted with CH2Cl2 (2x200mL). The combined extract was dried (MgSO4), and concentrated in vacuo. The residue was recrystallized from minimal amount of Et2O/hexanes to afford the product 3.48 g (94%): 'H NMR (500 MHz, methanol-dj) 5 ppm 1.00 (s, 9 H), 1.59 (m, 2 H), 1.73 (m, 4 H), 1.84 (dd, /=5.95, 3.20 Hz, 2 H), 3.98 (s, 1 H), 5.02 (m, 1 H). Step 2:
To a solution of the product (530.1 mg, 1.04 mmol) of Step 4 of Example 371 {HC1 salt of P2[(4/?)-7-chloroquinoline-4-oxo)-5-proline]-Pl(l/?,25 Vinyl Acca) COOEt, the product (328 mg, 1.35 mmol) of Step 1 of Example 372 {(L)-2-cyclopentyloxycarbonylamino-3,3-dimethyl-butyric acid}, HOBT (146 mg, 1.08 mmol), and diisopropylethylamine (0.755 mL, 4.32 mmol) in CH2Cl2 (7 mL) was
added HBTU (512 mg, 1.35 mmol). The reaction mixture was stirred for overrate and partitioned between CH2C12 and pH 4.0 buffer. The CH2C12 layer was washed with water, saturated NaHCOs (aq.), dried (MgSO4), concentrated. The residue was purified over a Biotage 40M column (EtOAc-Hexanes: 35-100%) to afford the product 640 mg (92%): *H NMR (methanol-dO 8 ppm 1.02 (s, 9 H), 1.26 (m, 4 H), 1.56 (m, 10 H), 2.19 (q, 7=8.75 Hz, 1 H), 2.41 (m, 1 H), 2.70 (dd, 7=14.19,8.09 Hz, 1 H), 4.01 (dd, 7=11.90,3.05 Hz, 1 H), 4.13 (m, 2 H), 4.20 (s, 1 H), 4.53 (m, 1 H), 4.62 (m, 1 H), 5.09 (d, 7=10.38 Hz, 1 H), 5.26 (d, 7=17.09 Hz, 1 H), 5.47 (m, 1 H), 5.77 (m, 1 H), 7.07 (d, 7=5.49 Hz, 1 H), 7.47 (m, 1 H), 7.94 (m, 1 H), 8.20 (d, 7=8.85 Hz, 1 H), 8.72 (d, 7=5.49 Hz, 1 H). LC-MS (retention time:1.71, MethodB), MS m/z 655 (M*+l). Step 3:
Tripeptide acid was prepared by following Step 7 of Scheme 2 of Example 370, except that cyclopentoxycarbonyl - NH-P3(L-terf-BuGly)-P2[(4fl)-(7-chloroquinoline-4-oxo)-S-proline]-Pl(l/?,2S Vinyl Acca)-COOEt used in place of the product of Step 6 of Example 370.
Modification: 0.636 g (0.97 mmol) of the product of Step 2 of Example 372 used, 0.424 g obtained (69% yield). Product:
Data: !H NMR (methanol-d,) 5 ppm 1.02 (s, 9 H), 1.57 (m, 11 H), 2.14 (q, 7=9.03 Hz, 1 H), 2.46 (m, 1 H), 2.68 (m, 1 H), 4.02 (dd, 7=11.89,3.11 Hz, 1 H), 4.19 (m, 1 H), 4.50 (d, 7=26.35 Hz, 1 H), 4.64 (t, 7=8.42 Hz, 1 H), 5.04 (m, 1 H), 5.24 (d, 7=17.20 Hz, 1 H), 5.44 (s, 1 H), 5.87 (m, 1 H), 7.05 (d, 7=5.12 Hz, 1 H), 7.48 (m, 1 H), 7.92 (m, 1 H), 8.18 (d, 7=8.78 Hz, 1 H), 8.71 (d, 7=5.49 Hz, 1 H). LC-MS (retention time: 2.32, Method A), MS m/z 627 (MM).
A solution of GDI (0.021 g, 0.13 mmol) and the product of Step 3 of Example 372 (0.058 g, 0.09 mmol) {BOCNH-P3(L-*-BuGly)-P2[(4/?)-7-chloroquinoline-4-oxo)-S-proline]-Pl (1/2,25 Vinyl AccaJ-COaH} in THF (2 mL) was refluxed for 40 min and allowed to cool down to rt. A total of 0.016 g (0.13 mmol) of cyclopropanesulfonamide, followed by the addition of a solution of neat DBU (0.019 mL, 0.13 mmol). The reaction was stirred for ovemite, then diluted with EtOAc (100 mL) and washed pH 4.0 buffer (2x), dried (MgSO4), concentrated and purified over three 1000 uM preparative TLC plate from Analtech (20x40 cM, eluted sequentially with 50% to 0% to 2% MeOH in CH2C12) to provide product (Compound 372) 27.3
1.49 (m, 11 H), 1.86 (m, 1 H), 2.14 (m, 1 H), 2.49 (m, 1 H), 2.68 (dd, 7=13.89, 7.48 Hz, 1 H), 2.78 (m, 1 H), 4.08 (m, 1 H), 4.22 (s, 1 H), 4.55 (m, 2 H), 5.05 (d, 7=10.07 Hz, 1 H), 5.22 (d, 7=17.09 Hz, 1 H), 5.46 (m, 1 H), 5.86 (m, 1 H), 7.07 (d, 7=5.19 Hz, 1 H), 7.46 (d, 7=8.55 Hz, 1 H), 7.91 (s, 1 H), 8.18 (d, 7=8.85 Hz, 1 H), 8.72 (d, 7=5.19 Hz, 1 H). LC-MS (retention time: 1.52 Method I), MS m/z 730 (M++l). Example 373: Preparation of Compound 373.
N A solution of 2-amino-4-methoxylacetophenone (4.45 g, 26.94 mmol) at 0 °C dissolved in CHaCb (100 mL) was treated with cyclopropanecarbonyl chloride (3.1 mL, 33.68 mmol) diisopropylethylamine (19 mL, 107.8 mmol), DMAP (0.780 g, 6.4 mmol). The reaction mixture was stirred at rt ovemite and concentrated in vacuo. The residue dissolved in CHaCk (500 mL) was washed with aqueous 1 N HCI, water, NaHCO3 (aq.), and dried (MgSO4). The solvent was removed in vacuo and the solid residue was treated with EtOAc/hexanes (1/1) to provide the product (5.35 g, 85%): 'H NMR (methanol-d4) 8 ppm 0.94 (m, 4 H), 1.69 (m, 7=3.97 Hz, 1 H), 2.60 (s, 3 H), 3.84 (s, 3 H), 6.69 (d, 7=7.93 Hz, 1 H), 7.98 (d, 7=8.85 Hz, 1 H), 8.23 (s, 1 H). Step 2:
A solution of product (5.35 g, 22.72 mmol) of Step 1 example 373 (cyclopropanecarboxylic acid (2-acetyI-5-methoxy-phenyl)-amide} and tert-BuOK (5.45 g, 48.6 mmol) in tert-butanol (130 g) was refluxed for 6 h. The reaction mixture was cooled, poured into ice cold buffer and adjusted to pH 7, filtered. The solid collection was recrystallized from MeOH/EtaO to provide the product (1 g, 20%): 'H NMR (methanol-dO 8 ppm 0.96 (m, 2 H), 1.15 (m, 2 H), 1.94 (m, 1 H), 3.87 (s, 3 H), 5.86 (m, 1 H), 6.93 (m, 2 H), 8.04 (d, 7=8.85 Hz, 1 H). Step 3:
To a solution of N-Boc-L-3-hydroxyproline (1.06 g, 4.32 mmol) and triphenylphosphine (2.27 g, 8.64 mmol) at 0 °C dissolved THF (25 mL) was added a solution of the product (0.93 g, 4.32 mmol) of Step 2 Example 373 {2-CycIopropyl-
mm..me reaction mixture was stirred ovemite and concentratea. The residue was purified twice by a Biotage 40+M column (EtOAc-Hexanes: 20-65%) to afford the product 1:74 g (90%): LC-MS (retention time: 2.56, Method J), MS m/z 443 (M*+l). Step 4:
To a suspension of (1.70 g, 3.86 mmol) of the product of Step 3 of Example 373 (Boc-(4R)-(2-cycIopropyl-7-methoxy-quinoline-4-oxo)-S-proline methyl ester} in THF(91 mL), CH3OH (18.2 mL), and H2O (27 mL) was added LiOH (0.73 g, 30 mmol). The reaction mixture was stirred for 16 h, adjusted to pH 6, the organic solvent was removed in vacuo. The residue was acidified to pH 4, and extracted with EtOAc (4x100 mL). The combined organic extract was dried (MgS04>, and concentrated in vacuo to supply the product 1.64 g (100%): JH NMR (methanol-d4) 5 ppm 1.32 (m, 13 H), 2.37 (m, 2 H), 2.71 (m, 1 H), 3.86 (m, 1 H), 3.95 (s, 3 H), 4.14 (m, 1 H), 4.43 (m, 1 H), 5.41 (s, 1 H), 6.65 (s, 1 H), 7.19 (m, 1 H), 7.30 (m, 1 H), 8.02 (dd,/=12.63,9.33 Hz, 1 H). Step 5:
The product (1.61 g, 2.79 mmol) of Step 4 of Example 373 {Boc-P2{(4/?)-[2-cyclopropyl-7-methoxylquinoline-4-oxo]-S-proline}-Pl(l/?,2S Vinyl Acca) COOEt} was dissolved in HCl/dioxane (15 mL; 60 mmol) and stirred for 3 h at rt. The reaction mixture was concentrated and azeotroped with dry THF to afford the product (1.58 g, 100%): LC-MS (retention time: 2.12, Method K), MS m/z 566 (MM).
To a suspension of the product (1.58 g, 2.79 mmol) of Step 5 of Example 373 {Bis HCJ salt of P2 {(4/f)-[2- cyclopropyl-7-methoxyIquinoline-4-oxo]-S-proline}-Pl(lR,2S Vinyl Acca) COOEt}, diisopropylethylamine (1.65 mL, 9.25 mmol), N-Boc-L-terr-leucine (0.775 g, 3.35 mmol), HOBT.H2O (0.515 g, 3.36 mmol) in CH2C12 (13 mL) was added HBTU (1.28 g, 3.36 mmol). The mixture was stirred for 14 h and partitioned between EtOAc and pH 4.0 buffer. The EtOAc layer was dried (MgSCU), concentrated. The resisdue was purified over a Biotage 40+M column (EtOAc-hexanes: 20-100%, followed MeOH) and further purified by 20X40 cM 1000D Analtech PTLC plate (MeOH-CH2Cl2 2%) to afford the product 1.4 g (63%): 'H NMR (methanol-dO 5 ppm 1.04 (s, 9 H), 1.20 (m, 5 H), 1.28 (s, 9 H), 1.39 (m, 2 H), 1.69 (m, 1 H), 2.19 (m, 2 H), 2.36 (m, 1 H), 2.63 (dd, 7=13.54, 7.68 Hz, 1 H), 3.90 (s, 3 H), 4.08 (m, 4 H), 4.19 (d, 7=11.34 Hz, 1 H), 4.47 (d, 7=11.71 Hz, 1 H), 4.56 (t, 7=8.60 Hz, 1 H), 5.08 (m, 1 H), 5.24 (m, 1 H), 5.39 (s, 1 H), 5.78 (m, 1 H), 6.56 (s, 1 H), 6.96 (dd, 7=9.15, 2.20 Hz, 1 H), 7.21 (d, 7=2.56 Hz, 1 H), 7.97 (d, 7=9.15 Hz, 1 H). LC-MS (retention time: 2.34, Method K), MS m/z 679 (M*+l). Step 7:
To a suspension of the product of Step 6 of Example 373 (1.28 g, 1.89 mmol), Boc -NH-P3(L-/e/t-BuGly)-P2[(4/?)-(2-cyclopropyl-7-methoxylquinoline-4-oxo)-5-proline]-Pl(ltf,2S Vinyl Acca)-COOEt, in THF(93 mL), CH3OH (23 mL), and H2O (45 mL) was added LiOH (0.491 g, 20.4 mmol). The reaction mixture was stirred for 18.5 h, adjusted to pH 4, removed the organic solvent in vacuo. The residue was extracted with EtOAc (5x lOOmL). Combined organic solvent was dried (MgSO4), and concentrated in vacuo to afford the desired product 1.17 g (97% ): 'H NMR (methanol-dO 6 ppm 1.04 (s, 9 H), 1.24 (s, 9 H), 1.27 (m, 3 H), 1.42 (m, 2 H), 1.68 (dd, 7=8.05,5.12 Hz, 1 H), 2.17 (m, 1 H), 2.33 (m, 1 H), 2.47 (m, 1 H), 2.66 (m, 1 H), 3.95 (s, 3 H), 4.09 (m, 2 H), 4.51 (d, 7=11.71 Hz, 1 H), 4.59 (t, 7=8.60 Hz, 1 H), 5.07 (m, 1 H), 5.26 (m, 1 H), 5.52 (s, 1 H), 5.85 (m, 1 H), 6.69 (s, 1 H), 7.10 (dd, 7=9.15, 2.20 Hz, 1 H), 7.27 (d, 7=2.20 Hz, 1 H), 8.10 (d, 7=9.15 Hz, 1 H). LC-MS (retention time: 2.21, Method K), MS m/z 651 (M++l).
Step 8:
A solution of CDI (0.058 g, 0.344 mmol) and the product of Step 7 of Example 373 (0.160 g, 0.246 mmol) (Boc - NH-P3(L-/e/t-BuGly)-P2[(4JR)-(2- cyclopropyl-7-methoxylquinoline-4-oxo)-5-proline]-Pl(lJ?,25 Vinyl Acca)-COOH} in THF (2 mL) was refluxed for 60 min and allowed to cool down to it. Cyclopropanesulfonamide (0.041 g, 0.344 mmol) followed by the addition of neat DBU (0.051 mL, 0.344 mmol). The reaction was stirred for 24 h and worked up by partition the reaction mixture between pH 4.0 buffer and EtOAc. The organic layer was dried (MgSO,*), concentrated and purified by preparative HPLC (0-100% solvent B) to supply the product (Compound 373) 0.086 g (46%): 'H NMR (TRIFLUOROACETIC ACID-D) 5ppm 1.04 (s, 9 H), 1.21 (m, 16 H), 1.41 (m, 1 H), 1.87 (dd, 7=8.05, 5.49 Hz, 1
(m, 1 H), 4.21 (m, 1 H), 4.49 (m, 2 H), 5.11 (d, 7=11.71 Hz, 1 H), 5.27 (d, 7=17.20 Hz, 1 H), 5.46 (s, 1 H), 5.76 (m, 1 H), 6.62 (m, 2 H), 7.01 (dd, 7=8.97, 2.01 Hz, 1 H), 7.23 (d, 7=2.56 Hz, 1 H), 8.00 (d, 7=8.78 Hz, 1 H).
To a solution of m-anisidine (58 g, 471 mmol) in 800 mL of CH3CN was added Meldrum's acid (75g, 518 mmol), and trimethylformate (60g, 565 mmol). The heterogeneous mixture was refluxed for 2 h. The solvent was removed in vacuo, MeOH (30 mL) was added, and the resulting precipitate was filtered and washed with 10-15 mL of MeOH. The MeOH addition/filtration procedure was repeated on the concentrated mother liquor. The resulting combined solid was dried (-20 torr, 45 °C ovemite) to afford 117.6 g (90%) of the intermediate 5-[(3-Methoxyphenyl-amino)methylene]-2,2-dimethyl-[l,3]dioxane-4,6-dione. Step 2:
To a solution of Ph2O (500 g) heated to 250 °C was added 108.7g (392 mmol) of 5-[(3-Methoxyphenyl-amino)methylene]-2,2-dimethyl-[l,3]dioxane-4,6-dionein portions over a 30 min period. The mixture was heated an additional 15 min, cooled to it, diluted with hexanes (800 mL) and the resulting slurry stirred ovemite. The hexanes was decanted off, the solid residue dissolved in 600 mL of MeOH at reflux, cooled to rt and the resulting solid filtered and washed with minimal QfyCh. The
analogous recrystallization procedure was followed to afford a total of 20.73 g (30%) of 7-methoxyquinolin-4-ol as a light brown solid.' H NMR (methanol-d4) 8 3.87 (s, 3H), 6.23 d, 7=7.3 Hz, IH), 6.68 (d, 7=2.4 Hz, IH), 6.96 (dd, 7=9.0, 2.4 Hz, IH), 8.11 (d, 7=9 Hz, IH); LC-MS (retention time: 0.77, method D), MS m/z 176 flvT+1). Step 3:
To a solution of) of Af-Boc-cij-L-4-Hydroxyproline methyl ester (12.24 g, 49.8 mmol) and PPh3 (26.14 g, 99.7 mmol) in THF (200 mL) cooled to 0 °C was added a solution of DEAD (17.36 g, 99.7 mmol) and 7-methoxyquinolin-4-ol (8.73 g, 49.8 mmol) in (THF 700 mL) over a 45 min period. The mixture was slowly allowed to warm to it ovemite, concentrated in vacuo. The residue was purified over a Biotage 65M column (MeOH-EtOAc: 0-10%) to afford 12.78g (64%) of the product as a colorless glass: 'H NMR (CDC13) 5 1.36 (s, 9H), 2.26-2.35 (m, IH), 2.57-2.68 (m, IH), 3.71 (s, 3H), 3.75-3.92 (m, 2H), 3.86, 3.87 (two s (rotamers) 3H), 4.41-4.53 (m, IH), 5.09 (m, IH), 6.52 (d, 7=5.5 Hz, IH), 7.06-7.09 (m, IH), 7.24-7.26 (m, IH), 7.94 (d, 7=9.1 Hz, IH), 8.50-8.56 (m, IH); LC-MS (retention time: 1.34, method D), MS m/e 403 (M*+l). Step 4:
To a solution of the product (8.54 g, 21.2 mmcl) of step 3 cf Eaxinple 374 [EQC-N-P2[(4fl)-(7-methoxyquinoline-4-oxo) proline methyl ester} in 600 mL of 5:1 THF/MeOH was added a solution of LiOH (4.0 g, 167 mmol) in 150 mL of water. The mixture was stirred overnite, the pH was adjusted to pH 7 using 6N aqueous HC1, and the solution concentrated until only the water layer remained. The residue was adjusted to pH 4 using IN aqueous HC1, NaCl added to saturate the mixture and was partitioned repeatedly with first EtOAc and then THF as the product was aqueous soluble. The combined organic layers were dried (MgSO/0 and concentrated to afford the product 8.18 g (99%) as a white solid. 'H NMR (CDCb-Methanol-cU) 5 1.42 (s, 9H), 2.40-2.49 (m, IH), 2.68-2.77 (m, IH), 3.88 (m, 2H), 3.94 (s, 3H), 4.41-4.53 (m, IH), 5.32 (m, IH), 6.86-6.92 (m, IH), 7.21 (dd, 7=9,2 Hz, IH), 7.30 (d, 7=2 Hz, IH), 8.05-8.10 (m, IH), 8.62 (d, 7=6 Hz, IH); LC-MS (retention time 1.20, method A), MS m/z 389 (MM). Step 5:
To a solution of the product (4.50 g, 11.60 mmol) of Step 4 of Example 374 {Boc-4(/?)-(7-methoxyquinoline-4-oxo) proline}, 2.66 g (13.9 mmol) of the HC1 salt of vinyl Acca (existing as a 1:1 mixture of diastereoisomers (IR,2S/IS,2R where cyclopropyl carboxyethyl group is syn to vinyl moiety), 10 mL (57.4 mmol) of DIPEA, and 2.13 g (13.9 mmol) of HOBT.H2O in 150 mL of CH2C12 was added 5.27 g (13.9 mmol) of HBTU, and the mixture stirred overnite. The solution was diluted with 200 mL of CH2C12 and was partitioned with pH 4.0 buffer (2x50 ml). The organic layer was washed with saturated aqueous NaHCOa (2x50mL), water (2x50mL), and brine (2x50mL). The organic solution was dried (MgSO,)), concentrated and purified using a Biotage 65M column (eluted with 0- 9% MeOH/EtOAc) to provide of BOC-NH-P2[(4/?)-(7-methoxyquinoline-4-oxo)-5-proline]-Pl(l/?,25 vinyl accaPl moiety)-COOEt as the initial eluted isomer (2.21 g, 36% overall), followed by 1.13 g (19%) of pure lower Rf isomer BOC-NH-P2[(4/?)-(7-methoxyquinoline-4-oxo)-S-proline]-Pl(lS,2# Vinyl Acca PI moiety)-CO2Et. Mixed fractions were also obtained. Data for BOCN-P2[(4/2)-(7-methoxyquinoline-4-oxo)-S-proline]-Pl(ltf,2SHVinylAcca)-COOEt: 1H NMR (CDC13) 61.16 (t, 7=7 Hz ,3H), 1.35 (s, 9H), 1.37-1.47 (m, IH), 1.74-1.88 (m, IH), 2.04-2.13(m, IH), 2.32-2.46(m, IH), 2.58-2.69 (m, IH), 3.76 (m, IH), 3.87 (s ,3H), 4.02-4.13 (m, 2H), 4.30-4.44 (m, IH), 5.05-5.19 (m, 2H), 5.24 (d, 7=17 Hz, IH), 5.63-5.71 (m, IH), 6.61 (m, IH), 7.07 (dd, 7=9,2Hz, IH), 7.22 (d, 7=2 Hz, IH), 7.76-7.83 (m, IH), 7.92 (d, 7=9 Hz, IH), 8.50 (d, 7=5 Hz, IH). LC-MS (retention time: 1.38, method A), MS m/z 526 (M++1).
Step 6:
A total of product (1.35 g, 2.90 mmol) of Step 5 of Example 374 {BOC-P2 methoxyquinoline-4-oxo)-S-proline]-Pl(ltf,2S Vinyl Acca)-COOEt) was dissolved in 4N HCl/dioxane (15ml, 60 mmol) and was stirred for 2.5 h at it. The reaction mixture was concentrated in vacuo to supply 1.3 g (100%) of the product as a tan
IH), 1.47-1.52 (m, IH), 1.78 (dd, 7=8, S Hz, IH), 2.21-2.32 (m, IH), 2.55-2.64 (m, IH), 2.99 (dd, 7=15, 7 Hz, IH), 3.96 (s, 2H), 4.06 (s, 3H), 4.14 (q, 7=7 Hz, 2H), 4.69-4.75 (m, IH), 5.13 (d, 7=10 Hz, IH), 5.33 (d, 7=17 Hz ,1H), 5.71-5.83 (m, IH), 5.89 (m, IH), 7.44 (m, IH), 7.49-7.52 (m, IH), 8.51-8.55 (m, IH), 8.94-8.96 (m, IH); I3C NMR (methanol-dj) 6 14.62, 23.08, 30.89, 34.73, 36.97, 41.03, 52.42, 57.11, 60.17, 62.70,81.13, 100.06, 103.07, 117.02, 118.53. 122.70, 126.86, 134.74, 143.15, 146.75, 166.62, 167.71, 169.37, 171.18. LC-MS (retention time: 0.94, method D), MSm/z426(MM) Step 7:
To suspension of product (1.3 g, 2.61 mmol) of Step 6 of Example 374 {NH2-P2[(4/?)-(7-methoxyquinoline-4-oxo)-5-proline]-Pl(l/?,25- Vinyl Acca)-COOEt, Bis HC1 Salt}, A/-BOC-L-re/t-leucine (BOC L-tBuGly) (0.94 g, 4.25 mmol), NMM (1.7 ml, 15.5 mmol) in DMF (20mL) was added HATU (1.55g, 3.40 mmol) at rt. The reaction mixture was stirred overnite, diluted with 75% EtOAc-THF (300 mL),
washed with pH 4.0 buffer (2x50 mL), saturated aqueous NaHCO3 (50 ml), brine (50mL), dried (MgSO4), purified by a Biotage 40 M column (eluted with 15% to 100% EtOAc in Hexanes) to supply the product 0.702 g (42%) {BOCNH-P3(L-f-BuGly)-P2[(4^)-(7-methoxyquinoline-4-oxo)-5-proline]-Pl-CO2Et as a foam. *H NMR (Methanol-dL,) 8 1.06 (s, 9H), 1.22-1.32 (m, 3H), 1.28 (s, 9H), 1.42-1.46 (m, 1H), 1.73 (dd, 7=8, 5 Hz, 1H), 2.19-2.25 (m, 1H), 2.67-2.72(m, 1H), 3.95 (s, 3H), 4.03-4.07(m, 1H), 4.10-4.18 (m, 2H), 4.20-4.24 (m, 1H), 4.54 (d, 7=12 Hz, 1H), 4.60-4.63 (m, 1H), 5.11 (dd, 7=10,2 Hz, 1H), 5.28-5.30 (m, 1H), 5.43 (m, 1H), 5.76-5.83 (m, 1H), 6.50 (d, 7=9 Hz, NH), 6.93 (d, J=5 Hz, 1H), 7.10 (dd, 7=9,2Hz, 1H), 7.28 (m, 1H), 7.99 (m, 1H), 8.11 (d, 7=9 Hz, 1H), 8.62 (d,7=5H); LC-MS m/z 639 (retention time: 1.53 method D). Step 8:
To a suspension of product (702 mg , 1.1 mmol) of Step 7 of Example 374 {BOCNH-P3(L-r-BuGly)-P2[(4/?)-7-methoxyquinoline-4-oxo)-5-proline]-Pl(l^,25 Vinyl Acca)-COOEt} in THF (50 mL), CH3OH (7 mL), and H2O (22 mL) was added LiOH (211 mg, 8.80 mmol). The reaction mixture was stirred for one day, acidified to neutral pH, and concentrated in vacua until only the aqueous layer remained. The resulting aqueous residue was acidified to pH 4.0 by addition of 1.0 N aqueous HC1 and then saturated with solid NaCI. This aqueous mixture was extracted repeatedly with EtOAc and THF, the combined organic solvent washed with brine (50 mL), dried (MgSO/O, filtered, and concentrated m vacuo to supply the product 631 mg (92%), BOCNH-P3(L-/-BuGly)-P2[(4/?)-(7-methoxyquinoline-4-oxo)-5-proline]-Pl(lR,2S Vinyl Acca)-CO2H, as a solid. !H NMR (Methanol-d,) 5 1.04 (s, 9H), 1.22 (s, 9H), 1.34-1.39 (m, 1H), 1.67 (dd, 7=8, 5 Hz, 1H), 2.03-2.13 (m, 1H), 2.43-2.49 (m, 1H), 2.67-2.73 (m, 1H), 3.96 (s, 3H), 4.00-4.05 (m, 1H), 4.15-4.21 (m, 1H), 4.56-4.62 (m, 2H), 5.02 (d, 7=10 Hz, 1H), 5.20 (d, 7=17 Hz, 1H), 5.52 (m, 1H), 5.87-5.99 (m, 1H), 6.47 (d, 7=8 Hz, 1H), 6.91 (s, 1H), 7.12 (d, 7=5 Hz, 1H), 7.19 (dd, 7=9, 2 Hz, 1H), 7.31 (d, 7=2 Hz, 1H), 8.22 (d, 7=9 Hz, 1H), 8.72 (d, 7=5 Hz, 1H). LC-MS (retention time: 1.44, method D), MS m/z 611 (MM). Step 9:
To a solution of the tripeptide acid (0.120 g, 0.195 mmol) of Step 8 of Example 374 in THF (2 mL) was added GDI (44.3 mg, 0.27 mmol) and the resulting solution was
refluxed for 60 min and allowed to cool down to it. Cyclobutylsulfonamide (0.037g, 0.273 mmol) was added in one portion before the addition of neat DBU (0.041 mL,, 0.273 mmol). The reaction was stirred for 24 h, another one equivalent of GDI and Cyclobutylsulfonamide added and the mixture stirred 48h more. The mixture was diluted with 50% THF/EtOAc (200mL) and washed brine saturated pH 4.0 buffer (30mL), dried (MgSO4) and concentrated in vacuo. The residue was dissolved in 2 mL of 50% THF-CH2C12,75 mg (0.39 mmol) of ED AC, 48 mg (0.39 mmol) of 4-DMAP, 58 DL (0.39 mmol) of DBU and 53 mg (0.39 mmol) of Cyclobutylsulfonamide added, and the mixture stirred 4 days. The mixture was purified by one 1000D Analtech PTLC plate (20 X 40 cM, eluted with 2% MeOH in CH2C12) to supply the desired product Compound 374, BOCNH-P3(L-t-BuGly)-P2[(4R)-(7-methoxyquinoline-4-oxo)-S-proline]-Pl(lR,2S Vinyl Acca)-CONHSO2. Cyclobutane, as a foam 2 mg (2%): 'H NMR (methanol-d,) 5 1.07, 1.08 (two s (retainers) 9H), 1.20,1.21 (two s (rotamers) 9H), 1.41-1.48 (m, 1H), 1.64-1.70 (m, 1H), 1.72-1.91 (m, 2H), 1.95-2.11 (m, 2H), 2.23-2.37 (m, 2H), 2.40-2.58 (m, 2H), 2.72-2.75 (m, 1H), 4.06 (s, 3H), 4.12-4.17 (m, 2H), 4.35-4.38 (m, 1H), 4.58-4.62 (m, 1H), 4.65-4.70 (m, 1H), 5.16-5.18 (m, 1H), 5.24-5.37 (m, 1H), 5.69-5.76 (m, 2H), 7.40-7.46 (m, 3H), 8.35-8.40 (m, 1H), 8.92 (d, 7=7 Hz, 1H). LC-MS (retention time: 1.58 method B), MS m/z 728 (M++1).
To a solution of product (794 mg, 1.51 mmol) of Step 5 of Example 374 {N-BOC-P2[(4RM7-methoxyquinoline-4-oxo)-S-proline]-Pl(lK,2S VinylAcca)-C02Et} in 68 mL of 12% MeOH/THF was added a solution of 218 mg (9.08 mmol) of lithium hydroxide in 30 mL of water and the mixture was stirred 16 h. The pH was adjusted to neutral by addition of 6N aqueous HC1, concentrated until only the water remained, the solution adjusted to pH 4 using aqueous IN HC1 and was then extracted with 50% THF-EtOAc (5x200-mL portions). The combined organic layers were dried (MgSC>4) and concentrated to provide the product 752 mg (100%) {N-BOC-P2[(4fl)-(7-methoxyquinoline-4-oxo)-S-proline]-Pl(l/?,2S Vinyl Acca)-CO2H}: 'H NMR (Methanol-d4) 6 1.37-1.43 (m, IH), 1.39 (s, 9H), 1.69-1.78 (m, 1 H), 2.16-2.24 (m, IH), 2.44-2.54 (m, IH), 2.64-2.74 (m, IH), 3.89-3.94 (m, 2H), 3.96 (s, 3H), 4.40-4.43 (m, IH), 5.11 (d, 7=10 Hz, IH), 5.31 (d, 7=17 Hz, IH), 5.40 (m, IH), 5.79-5.87 (m, IH), 6.91 (s, IH), 7.04 (d, 7=6 Hz, IH), 7.25 (dd, 7=9.1, 2 Hz, IH), 7.29 (m, IH), 8.09 (d, 7=9.1 Hz, IH), 8.66 (d, 7=6 Hz, IH). LC-MS (retention time: 1.05, method H). MS m/z 498 (M++1). Step 2:
To a solution of product (399.5 mg, 0.668 mmol of Step 1 of Example 375 {N-BOC-P2[(4R)-(7-methoxyquinoline-4-oxo)-S-proline]-Pl(l/?,2SVinylAcca)-CO2H} in THF (4 mL) and GDI (434 mg, 2.68 mmol) was refluxed for 60 min and allowed to cool down to rt. Cyclopropylsulfonamide (406 mg, 3.35 mmol) was added in one
portion before the addition of neat DBU (0.50 mL, 3.35 mmol). The reaction was stirred for 16 h, diluted with 50% THF-EtOAc (200mL) and washed with brine saturated pH 4.0 buffer (2x40mL). Organic layer was dried (MgSO4), concentrated, and purified over a Biotage 25M column (MeOH in CH2C12,0% to 15%) to supply 217 mg (54%) of the desired product {N-BOC-P2[(4R)-(7-methoxyquinoline-4-oxo)-S-proline]-Pl(lfl,2S VinylAcca)-CONHSO2Cyclopropane}: 'H NMR (Methanol-dt) 81.01-1.10 (m, 2H), 1.11-1.18 (m, 1H), 1.20-1.27 (m, 1H), 1.39-1.48 (m, 1H), 1.44 (s, 9H), 1.87 (dd, 7=8, 5 Hz, 1H), 2.01-2.38 (m, 2H), 2.57 (dd, 7=14, 7 Hz, 1H), 2.91-2.96 (m, 1H), 3.83-3.92 (m, 2H), 3.94 (s, 3H), 4.36-4.39 (m, 1H), 5.11 (d, 7=10 Hz, 1H), 5.29 (d, 7=17 Hz, 1H), 5.38 (m, 1H), 5.74-5.81 (m, 1H), 6.91 (d, 7=5.5 Hz, 1H), 7.20 (dd, 7=9.2,2.4 Hz, 1H), 7.29 (m, 1H), 8.07 (d, 7=9.2 Hz, 1H), 8.60 (d, 7=5.5 Hz, 1H). LC-MS (retention time: 1.28, method I). MS m/z 601 (M++1) Steps 3:
A total of product (198 mg, 0.33 mmol) of Step 2 of Example 375 {BOC-P2 [(4R)-(7-methoxyquinoline-4-oxo)-S-proline]-Pl(lR,2S Vinyl Acca)-CONHSO2Cyclopropane} was dissolved in 4N HCl/dioxane (4ml, 16 mmol) and stirred for 2h at rt. The reaction mixture was concentrated to supply the crude product as a tan solid which was used immediately in the next reaction. Step 4:
The crude product of Step 3 of Example 375 {HN-P2[(4R)-(7-methoxyquinoline-4-oxo)-S-proline]-Pl(lR,2S Vinyl Acca)-CONHSO2Cyclopropane, Bis HC1 Salt} was suspended in 10 mL of dichloromethane. To this mixture was added N-BOC-L-tert-leucine (BOC L-tBuGly) [120 mg, 0.52 mmol], HOAT (30 mg, 0.20 mmol), DIPEA (0.29 ml, 1.65 mmol), and HATU (160 mg, 0.43 mmol) at rt. The reaction mixture was stirred for 16 h, diluted with 50% EtOAc-THF (300 mL), washed with brine saturated pH 4.0 buffer (3x50 mL), dried (MgSO4), concentrated. The residue was purified by a Isco 35g column (eluted with 0% to 15% MeOH in CH^Ch) to supply the product (130.1 mg, 47%) as a Running's base salt (Compound 375): 'H NMR (methanol-d4) 6 ppm 1.00-1.48 (m, 29 H), 1.47 (s, 9 H), 1.89 (m, 1 H), 2.26 (m, 1 H), 2.36 (m, 1 H), 2.69 (m, 1 H), 2.97 (m, 1 H), 3.25 (q, 7=7.43 Hz, 2 H), 3.74 (m, 2 H), 3.97 (s, 3 H), 4.10 (m, 1 H), 4.23 (dd, 7=19.68, 9.92 Hz, 1 H), 4.57 (m, 2 H), 5.15 (m, 1 H), 5.31 (m, 1 H), 5.50 (s, 1 H), 5.77 (m, 1 H), 7.01 (t, 7=5.34 Hz, 1 H), 7.16 (d,
/=9.16 Hz, 1 H), 7.31 (d, 7=1.83 Hz, 1 H), 8.14 (m, 1 H), 8.67 (d, 7=5.49 Hz, 1 H)'. LC-MS (retention time: 1.49 Method d), MS m/z 714 (M++l). Example 376:
Step 1:
Of Compound 375 (130 mg) was dissolved in EtOAc, washed one more time with pH 4 buffer, brine and then dried (MgSO,0. The crude mixture was purified over two 1000D PTLC plate from Analtech (20X40 cm, eluted with 3% MeOH in CH2C12) to afford the product (Compound 376) 54 mg (23% yield from the tripeptide acid): 'H NMR (Methanol-cU) 6 0.88-1.00(m, 2H), 1.01-1.14 (m, 2H), 1.03 (s, 9H), 1.25 (s, 9H), 1.34 (dd, 7=9,5 Hz, 1 H), 1.81-1.89 (m, 1H), 2.06-2.13 (m,lH), 2.45-2.50 (m, 1H), 2.65-2.75 (m, 1H), 3.91 (s, 3H), 3.98-4.11 (m, 1H), 4.21-4.22 (m, 1H), 4.46-4.50 (m, 1H), 4.54-4.57 (m, 1H), 4.97-5.02 (m, 1H), 5.14-5.22 (m, 1H), 5.33-5.41 (m, 1H), 5.81-5.99 (m, 1H), 6.87-6.95 (m, 1H), 7.06-7.09 (m, 1H), 7.25 (m, 1H), 8.07-8.10 (m, 1H), 8.59 (d, 7=5.2 Hz, 1H). HRMS m/z (M-Hy calcd. for C 712.3016, found: 712.3024; LC-MS m/e 714 (retention time: 1.42, method I).
A total of 1.0 mmol the product of Step 2 of Example 375 {The Bis HCl Salt of HN-P2[(4/?)-(7-methoxyquinoline-4-oxo)-5-proline]-Pl(lR,2S Vinyl Acca)-CONHSOjCyclopropane} suspended in 20 mL of dichloromethane was added 352 mg (1.30 mmol) of 2-(S)-terT-butoxycarbonylamino-8-nonenoic acid purchased from Kir Ammo AGIOS, nuAi ^az mg, u.ou mmoij, uirc,t\ (v./t mi, D.U mmoi;, ana HATU (494 mg, 1.30 mmol) at it. The reaction mixture was stirred 16 h, and the majority of the CHaCla removed in vacuo. The mixture was diluted with saturated pH 4.0 buffer (150 mL), and extracted into EtOAc (4x200 mL). The combined organic layers were dried (MgSC>4), concentrated. The residue was purified over a Biotage 40M column (eluted with 0% to 15% MeOH in CH2C12) to afford the product (Compoud 377) 574 mg (76%): LC-MS m/z 754 (retention time: 1.64, method I).
A total of 0.34 mmol of the product of Step 2 of Example 375 (The Bis HC1 Salt of HN-P2[(4fl)-(7-methoxyquirioIine-4-oxo)-S-proline]-Pl (1R.2S Vinyl Acca)-CONHSO2Cyclopropane} was suspended in 3 mL of dichloromethane. To this, mixture was added N-BOC-L-Valine (L-Val) (120 mg, 0.55 mmol), HOAT (30 mg, 0.20 mmol), DIPEA (0.29 ml, 1.65 mmol), and HATU (160 mg, 0.43 mmol) at rt. The reaction mixture was stirred 16 h, diluted with saturated pH 4.0 buffer (150 mL), and extracted into EtOAc (3x200 mL). The combined organic layers were washed with brine, dried (MgSC>4), and concentrated. The residue was purified over an Isco 35g column (MeOH in CH2C12:0% to 15%). This material was further purified over two 6 PTLC plate from Analtech (20X40 cm, eluted with 3% MeOH in CH2C12) to afford the product 104.1 mg (44%), Compound 378: HRMS m/z (M-H)' calcd. for CwEwNsC^S: 698.2860, found: 698.2865. LC-MS m/e 700 (retention time: 1.60, method D).
To a suspension of 2-picolic acid (3.73g, 30.3 mmol) and 2-amino-4-mc-thoxybcnzophe'-nonc (5.0 g, 30.3 mmo!) at -30 °C dissolved in pyridine (150 mL) was added POCh (3.7 mL, 45.4 mmol) in 5 min. the reaction mixture was stirred for 3 hr at the temperature, and stirred at it overrule. The reaction mixture was poured into cold water and extracted with EtOAc (3x). The combined extract was dried to provide the product (7.67 g, 93%): ]H NMR (methanol-d4) 6 ppm 2.65 (s, 3 H), 3.92 (s, 3 H), 6.78 (m, 1 H), 7.60 (m, 1 H), 8.00 (m, 1 H), 8.06 (m, 1 H), 8.21 (d, 7=7.63 Hz, 1 H), 8.59 (t, 7=2.29 Hz, 1 H), 8.76 (d, 7=3.97 Hz, 1 H). LC-MS (retention time: 1.56, Method D), MS m/z 271 (M++l). Step 2:
To a suspension suspension of Pyridine-2-carboxylic acid (2-acetyl-5-methoxy-phenyl)-amide (2.90 g, 10.7 mmol) in THF (50 mL) was added t-BuOK/THF (IM, 24 mL, 24 mmol). The reaction mixture was heated at 70 °C for 3 h and stirred ovemite. The solvent was removed the in vacuo. Cold water was added to the residue and adjusted pH to 4.6 with aqueous 1.0 N HC1, filtered. The solid residue was purified
over a Biotage 65M column (MeOH/CH2Cl2:0-15%) to provide the product (2.26 g, 84%): LC-MS (retention time: 1.19, Method D), MS m/z 253 (M++1). Step 3:
A mixture of 7-Methoxy-2-pyridin-2-yl-quinolin-4-ol (2.2 g, 8.71 mmol) in POCh (92 mL) was refluxed for 3 h and then removed the solvent in vacuo. Ice water was added to the residue, adjusted the pH >10 with 1.0 N NaOH, and extrated with EtOAc (2x). The combined extract was washed with water, brine, dried (MgSCu), removed solvent to supply the product as a yellow solid (89 %, 2.1 g): DMSO-D6) 5 ppm 3.97 (s, 3 H), 7.40 (dd, 7=9.16, 2.44 Hz, 1 H), 7.53 (m, 1 H), 8.01 (m, 1 H), 8.09 (d, 7=9.16 Hz, 1 H), 8.46 (s, 1 H), 8.56 (d, 7=7.93 Hz, 1 H), 8.74 (d, 7=3.97 Hz, 1 H). LC-MS (retention time: 1.50, Method D), MS m/z 271 (M^+l). Step 4:
To a solution of N-Boc-4-hydroxyproline (1.6 g, 6.7 mmol) in DMSO (20 mL) was added /-BuOK (1.9 g, 16.8 mmol). The generated mixture was stirred for 1.5 h and 4-Chloro-7-methoxy-2-pyridin-2-yl-quinoline (2.0 g, 7.4 mmol) and DMSO (10 mL) were added. The reaction mixture was stirred for 38 h, diluted with cold water and extracted with EtOAc/ether (1/4, 2x). the aqueous layer was acidified to pH 4 and extracted with EtOAc/THF (5x). the combined extract was dried (Na2SO4/MgSO4), removed the solvent in vacuo and the residue was purified by preparative HPLC (0-80% solvent B) to provide the product (1.6 g, 50%): LC-MS (retention time: 1.23, Method I), MS m/z 466 (MT+1). Step 5:
A solution of product (0.21 g, 0.65 mmol) of Step 4 of Example 379 {N-boc-(l#,2S)-l-amino-2-vinylcyclopropane carboxylic acid ethyl ester} in HCl/dioxane (4M, 5 mL, 20 mmol) was stirred for 3 h, and the solvent was removed in vacuo. To the residue was added CHaCh (10 mL), diisopropylethylamine (0.4 mL, 3.23 mmol), HOBT (0.20 g, 1.35 mmol), Boc-(4R)-(2-cyclopropyl-7-methoxy-quinoline-4-oxo)-S-proline (0.20 g, 0.5 mmol) and HATU (0.415 g, 1.07 mmol). The reaction mixture was stirred overnite and diluted with pH 4.0 buffer, extracted with EtOAc. The extract was dried (MgSCu) and purified by Biotage 40 M column using MeOH/ CH2C12 (0 to 15%) as eluent to provide the product (204.7 mg, 70%): 'H NMR (methanol-d4) 8 ppm 0.64 (m, 1 H), 0.96 (m, 2 H), 1.33 (m, 8 H), 1.39 (m, 9 H), 1.90
(m, 2 H), 2.18 (m, 1 H), 2.54 (m, 1 H), 2.81 (m, 1 H), 4.01 (m, 5 H), 4.44 (d, .7=28.99 Hz, 1 H), 5.08 (m, 1 H), 5.31 (m, 1 H), 5.57 (s, 1 H), 6.03 (m, 1 H), 6.94 (s, 1 H), 7.27 (d, 7=8.24 Hz, 1 H), 7.64 (m, 1 H), 7.92 (m, 1 H), 8.14 (m, 2 H), 8.66 (s, 1 H), 8.74 (s, 1 H). Step 6:
A slurry of P2 Boc-(4R)-(7-methoxy-2-Pyridin-2-yl-quinoline-4-oxo)-S-proline]-Pl(lR,2S Vinyl Acca)-CONHSO2(l-cyclopropylmethylcyclopropan-l-yl) (Step 5, Example 379) (203 mg, 0.3 mmol) in 4M HCl/dioxane (3.5 mL, 14 mmol) was stirred for 2 h, removed the solvent in vacuo. To the residue was added CH2Cl2 (2 mL), diisopropylethylamine (0.63 mL, 3.6 mmol), Boc-L-rert-leucine (83 mg, 0.36 mmol), HOAt (41 mg, 0.3 mmol), and HATU (148 mg, 0.39 mmol). The reaction mixture was stirred at rt for 7 h and removed the solvent in vacuo. The residue was purified by preparative HPLC (35-85% solvent B) to provide the desired product (Compound 379) 25.1 mg (11%): 'H NMR (methanol-ck) 6 ppm -0.05 (m, 1 H), 0.30 (m, 1 H), 0.66 (m, 1 H), 0.91 (m, 2 H), 1.05 (s, 9 H), 1.28 (s, 9 H), 1.67 (m, 8 H), 2.15 (m, 1 H), 2.58 (m, 1 H), 2.77 (m, 1 H), 3.96 (s, 3 H), 4.19 (d, 7=40.25 Hz, 2 H), 4.51 (d, 7=16.47 Hz, 2 H), 4.95 (m, 1 H), 5.15 (m, 1 H), 5.53 (s, 1 H), 5.89 (dd, 7=16.65, 933 Hz, 1 H), 7.09 (d, 7=8.42 Hz, 1 H), 7.43 (d, 7=1.83 Hz, 1 H), 7.50 (m, 1 H), 7.82 (s, 1 H), 7.99 (m, 1 H), 8.10 (d, 7=9.15 Hz, 1 H), 8.48 (d, 7=7.68 Hz, 1 H), 8.72 (s, 1 H). LC-MS (retention time: 1.59, Method I), MS m/z 791 (MM). Example 380: Preparation of Compound 380.
starting material in Scheme 1 of the present example was prepared by coupling of the product of step 3 in Example 11 of section B with the amino terminus of P1(IR,2S Vinyl Acca)-COOEt. A slurry of said coupling product, P2 Boc-(4R)-(6-methoxy-isoquinoline-l-oxo)-S-proline]-Pl(l/?,2S Vinyl Acca)-COOEt (7.88 g, 14.99 mrnol) in 4M HCI/dioxane (120 mL, 480 mmol) was stirred for 2 h, removed the solvent in vacuo and azeotroped with dry dioxane. To the residue was added DMF (75 mL), N-mehtylmorpholine (6.27 mL, 57.07 mmol), Boc-L-tert-leucine (5.20 g, 22.49 mmol), and HATU (8.53 g, 22.49 mmol). The reaction mixture was stirred at it ovemite and worked up by pouring the reaction mixture into ice water and adjusted to pH 5 with aqueous 1.0 N HC1 and extracted with EtOAc. The extract was washed with NaHCOs (aq.), brine, dried (MgSO4) and concentrated. The residue was purified over Biotage 65M column (EtOAc-hexanes: 5-100%) to provide the product (8.07 g, 84%): Retention time: 1.88 method I) MS m/z 639 (MM). Step 2:
To a suspension of the product (4.0 g, 6.26 mmol) of Step 1 of Example 384 {Boc -NH-P3(L-Krr-BuGly)-P2[(4^)-(6-methoxyl-isoquinoline-l-oxo)-S-proline]-Pl(l/?,25 Vinyl Acca)-COOEt} in THF(250 mL), CH3OH (31 mL), and H2O (125 mL) was added LiOH (2.4 g, 100.2 mmol). The reaction mixture was stirred for ovemite and then adjusted to pH 7 with aqueous 1.0 N HC1. The organic solvents were removed in vacuo. The aqueous residue was acidified to pH 4 and extracted with EtOAc (2x).
The combined organic solvent was dried (Na2SO4/MgSC>4), and concentrated in vacuo to supply the product (3.79 g, 99%): 'H NMR (methanol-dt) D ppm 1.05 (s, 9 H), 1.25 (m, 1 H), 1.29 (s, 9 H), 1.46 (m, 1 H), 1.72 (dd, 7=8.24, 5.19 Hz, 1 H), 2.23 (q, 7=8.55 Hz, 1 H), 2.68 (dd, 7=13.89, 7.78 Hz, 1 H), 3.94 (s, 3 H), 4.05 (dd, 7=11.60,3.05 Hz, 1 H), 4.23 (d, 7=8.85 Hz, 1 H), 4.46 (d, 7=11.60 Hz, 1 H), 4.63 (t, 7=8.39 Hz, 1 H), 5.10 (d, 7=10.38 Hz, 1 H), 5.29 (d, 7=17.40 Hz, 1 H), 5.85 (m, 2 H), 7.10 (d, 7=9.16 Hz, 1 H), 7.19 (s, 1 H), 7.26 (d, 7=5.49 Hz, 1 H), 7.91 (d, 7=5.80 Hz,
1 H), 8.12 (d, 7=9.16 Hz, 1 H). Retention time: 1.81 method I) MS m/z 611 (M*+l).
Step 3:
A solution of GDI (0.052 g, 0.32 mmol) and the product (0.130 g, 0.21 mmol) of Step
2 of Example 384 {BOCNH-P3(L-/-BuGly)-P2[(4/?)-6-methoxy-sioquinoline-l-oxo)-
5-proline]-Pl(1R,2S Vinyl Acca)-CO2H} in THF (2 mL) was refluxed for 60 min and
allowed to cool down to it. Cyclobutanesulfonamide (0.043 g, 0.32 mmol) was added
followed by the addition of a solution of neat DBU (0.048 mL, 0.32 mmol). The
reaction was stirred for ovemite, then filtered through syringe filter and purified by
preparative HPLC (30% to 100% solvent B) to provide the desired product 0.1422
mg (92%): 'H NMR (methanol-d4) 6 ppm 1.04 (s, 9 H), 1.26 (d, 7=13.43 Hz, 9 H),
1.39 (m. 1 H), 1.85 (dd, 7=7.63,5.19 Hz, 1 H), 1.98 (m, 2 H), 2.26 (m, 4 H), 2.50 (m,
2 H), 2.61 (m, 1 H), 3.92 (s, 3 H), 4.05 (m, 1 H), 4.24 (m, 1 H), 4.33 (m, 1 H), 4.43
(d, 7=11.60 Hz, 1 H), 4.52 (m, 1 H), 5.13 (m, 1 H), 5.30 (m, 1 H), 5.71 (m, 1 H), 5.82
(s, 1 H), 7.08 (d, 7=8.85 Hz, 1 H), 7.18 (s, 1 H), 7.24 (d, 7=5.80 Hz, 1 H), 7.88 (m, 1
H), 8.08 (d, 7=9.16 Hz, 1 H). Retention time: 1.89 method I) MS m/z 728
Step 4:
Example 380, Step 3 (0.196 mg, 0.27 mmol) {(BOCNH-P3(L-f-BuGly)-P2 -(4K)-(6-methoxy-isoquinoline-l-oxo)-S-proline]-Pl(l/?,2S Vinyl Acca)-CONHSO2 Cyclobutyl} was dissolved in HCl/dioxane (5 mL; 20 mmol) and was stirred for 2 h at rt. Removed the solvent in vacuo to supply the titled product 100% (0.1887 g) which was ready to next step. Step 5:
To a mixture of the product (0.037 g, 0.053 mmol) of Step 4 of Example 380{HC1 salt of NH2-P3(L-/-BuGly)-P2 -(4/?)-(6-methoxy-isoquinoline-l-oxo)-S-proIine]-P1(1R,2S Vinyl Acca)-CONHSO2Cyclobutyl} anddiisopropylethylamine(0.046 mL), 0.26 mmol) in CH2C12 (2 mL) was added cyclopentyl chloroformate (0.7 M, 0.151 mL, 0.069 mmol). The reaction mixture was stirred overrule and purified by preparative HPLC (30% to 100% solvent B) to provide the desired product (Comound 380) (0.0303 g, 77%): JH NMR (methanol-cU) 5 ppm 1.03 (s, 9 H), 1.48 (m, 9 H), 1.86 (dd, 7=8.24, 5.49 Hz, 1 H), 1.99 (m, 2 H), 2.27 (m, 4 H), 2.51 (m, 2 H), 2.60 (dd, 7=13.89, 6.87 Hz, 1 H), 3.92 (s, 3 H), 4.05 (dd, 7=12.21, 3.97 Hz, 1 H), 4.32 (m, 2 H), 4.41 (d, 7=11.90 Hz, 1 H), 4.53 (m, 1 H), 4.69 (m, 1 H), 5.12 (d, 7=10.38 Hz, 1 H), 5.29 (d, 7=17.09 Hz, 1 H), 5.71 (m, 1 H), 5.83 (s, 1 H), 7.11 (d, 7=9.46 Hz, 1 H), 7.19 (s, 1 H), 7.25 (d, 7=5.80 Hz, 1 H), 7.88 (d, 7=5.80 Hz, 1 H), 8.08 (d, 7=9.16 Hz, 1 H). retention time: 1.85 method H), MS m/z 740 (M++1)
Step 1:
To a mixture of the product (0.037 g, 0.053 mmol) of Step 4 of Example 380 {HC1 salt of NH2-P3(L-r-BuGly)-P2 -(4tf)-(6-methoxy-isoquinoline-l-oxo)-S-proline]-Pl(ltf ,25 Vinyl Acca)-CONHSO2Cyclobutyl} and iisopropylethylamine (0.046 mL), 0.26 mmol) in CH2C12 (2 mL) was added new-pentyl chloroformate (0.012 mL, 0.069 mmoi;. me reaction mixture was stirrea overnne ana airecity punnea oy preparative HPLC (30% to 100% solvent B) to provide the desired product (Comound 381) (0.0252 g, 64%): *H NMR (methanol-oU) 8 ppm 0.84 (s, 9 H), 1.05 (s, 9 H), 1.40 (m, 1 H), 1.86 (m, 1 H), 2.00 (m, 2 H), 2.28 (m, 4 H), 2.51 (m, 2 H), 2.57 (m, 1 H), 3.39 (d, 7=10.07 Hz, 1 H), 3.55 (d, 7=10.38 Hz, 1 H), 3.92 (s, 3 H), 4.05 (m, 1 H), 4.33 (m, 2 H), 4.41 (d, 7=11.29 Hz, 1 H), 4.53 (m, 1 H), 5.12 (d, 7=10.07 Hz, 1 H), 5.29 (d, 7=17.09 Hz, 1 H), 5.71 (m, 1 H), 5.82 (s, 1 H), 7.10 (d, 7=9.16 Hz, 1 H), 7.19 (s, 1 H), 7.25 (d, 7=5.80 Hz, 1 H), 7.88 (d, 7=5.80 Hz, 1 H), 7.97 (s, 1 H), 8.07 (d, 7=8.85 Hz, 1 H). retention time: 1.89 method H), MS m/z 742 (M++1).
p 1To a mixture of the product (0.037 g, 0.053 mmol) of Step 4 of Example 380 {HC1 salt of NH2-P3(L-f-BuGly)-P2 -(4/?)-(6-methoxy-isoquinoline-l-oxo)-S-proline]-Pl(ltf,2S Vinyl Acca)-CONHSO2Cyclobutyl} and diisopropylethylamine (0.046 mL), 0.26 mmol) in CH2C12 (2 mL) was added di-t-amyl dicarbonate (0.0169 g, 0.069 mmol). The reaction mixture was stirred ovemite and directly purified by HPLC (30% to 100% solvent B) to provide the desired product (Comound 382) (0.0175 g, 44%): !H NMR (methanol-d4) 5 ppm 0.79 (t, 7=6.87 Hz, 3 H), 1.04 (s, 8 H), 1.21 (s, 3 H), 1.23 (s, 3 H), 1.41 (m, 2 H), 1.64 (m, 2 H), 1.83 (m, 1 H), 2.00 (m, 2 H), 2.26 (m, 4 H), 2.51 (m, 2 H), 2.60 (m, 1 H), 3.92 (s, 3 H), 4.07 (m, 1 H), 4.24 (m, 1 H), 4.33 (m, 1 H), 4.43 (d, 7=11.60 Hz, 1 H), 4.52 (m, 1 H), 5.13 (m, 1 H), 5.29 (m, 1 H), 5.71 (m, 1 H), 5.82 (s, 1 H), 7.09 (d, 7=8.85 Hz, 1 H), 7.18 (s, 1 H), 7.25 (d, 7=5.49 Hz, 1 H), 7.88 (d, 7=5.80 Hz, 1 H), 8.08 (d, 7=8.85 Hz, 1 H). retention time: 1.90, method H), MS m/z 742 (JVT+1).
Step 1
To a mixture of the product (0.037 g, 0.053 mmol) of Step 4 of Example 380 {HC1 salt of NH2-P3(L-r-BuGly)-P2 -(4/?)-(6-methoxy-isoquinoline-l-oxo)-S-proIine]-Pl(lR,2S Vinyl Acca)-CONHSO2Cyclobutyl} and iisopropylethylamine (0.046 mL), 0.26 mmol)in CH2C12 (2 mL) was added t-butyl-isocianate (0.008 mL, 0.069 mmol). The reaction mixture was stirred overnue ana airecuy punneu oy preparative HrLC (30% to 100% solvent B) to provide the desired product (Comound 383) (0.024 g, 62%): 'H NMR (methanol-da) 5 ppm 1.05 (s, 9 H), 1.19 (s, 9 H), 1.37 (m, 1 H), 1-85 (dd, 7=8.09, 5.34 Hz, 1 H), 2.00 (m, 2 H), 2.26 (m, 4 H), 2.50 (m, 2 H), 2.58 (m, 1 H), 3.92 (s, 3 H), 4.06 (m, 1 H), 4.32 (m, 2 H), 4.49 (m, 2 H), 5.11 (d, 7=10.38 Hz, 1 H), 5.27 (d, 7=17.40 Hz, 1 H), 5.69 (m, 1 H), 5.83 (s, 1 H), 7.08 (dd, 7=9.16,2.44 Hz, 1 H), 7.17 (d, 7=2.44 Hz, 1 H), 7.24 (d, 7=5.80 Hz, 1 H), 7.87 (d, 7=6.10 Hz, 1 H), 8.12 (d, 7=8.85 Hz, 1 H). retention time: 1.77, method H), MS m/z 727 (lvT+1).
Step 1:
A suspension of diisopropylethylamine (0.031 mL, 0.018 mmol), N,N'-disuccinimidyl carbonate (0.0274 g, 0.107 mmol) and the product (0.050 g, 0.0714 mmol) of Step 4 of Example 380{HC1 salt of NH2-P3(L-r-BuGly)-P2 -(4R)-(6-methoxy-isoquinoline-l-oxo)-S-proline]-Pl(l/?,2S Vinyl Acca)-CONHS02 Cyclobutyl} in THF (2 mL) was sonicated at 80 °C for 15 min. KH (0.046 g, 1.14 mmol) and 1-methylcyclopentanol (0.079 mL, 0.714 mmol) was added. The reaction mixture was stirred for 20 min and worked up by diluting with cold water, adjusted pH to 4, extracted with EtOAc. The extract was dried (MgS04) and the residue was purified by preparative HPLC (30% to 100% solvent B) to provide the desired product (Comound 384) (0.018 g, 33%): (methanol-d4) 8 ppm 1.04 (s, 9 H), 1.29-1.79 (m, 10 H), 1.84 (m, 2 H), 1.99 (m, 3 H), 2.26 (m, 4 H), 2.49 (m, 2 H), 2.60 (dd, 7=13.73,7.02 Hz, 1 H), 3.92 (s, 3 H), 4.05 (dd, 7=11.29,2.44 Hz, 1 H), 4.26 (s, 1 H), 4.32 (m, 1 H), 4.44 (d, 7=11.90 Hz, 1 H), 4.52 (m, 1 H), 5.12 (d, 7=10.07 Hz, 1 H), 5.28 (d, 7=16.79 Hz, 1 H), 5.71 (m, 1 H), 5.82 (s, 1 H), 7.10 (d, 7=8.85 Hz, 1 H), 7.19 (s, 1 H), 7.26 (d, 7=5.80 Hz, 1 H), 7.88 (d, 7=5.80 Hz, 1 H), 8.08 (d, 7=9.16 Hz, 1 H). LC-MS retention time: 1.91 method H), MS m/z 754 (M++l).
A suspension of 2-cyanomethyl-4-methoxy-benzoic acid methyl ester (1.9g and
TsOH. H2O (0.15 g, mmol) in morpholine 5 mL) was refluxed for 4 h and removed
the solvent in vavuo. The residue was recrystalyzed from EtOAc/hexanes with drops
of MeOH to provide the product (0.43 g, 17%): LC-MS retention time: 1.07 method
H),MSm/z266(M++l).
Step 2:
A mixture of 6-methoxy-3-morpholin-4-yl-isoquinoIin-l-ol (0.298 g, 1.15 mmol) in
was added. The pH was adjustde to >1 1 by addition of 1.0 N NaOH. The aqueous layer was extracted with EtOAc. The extract was dried (MgSO4), removed the solvent in vacuo to provide the produt (0.299g, 94%): LC-MS retention time: 1.68 method H), MS m/z 279 (MVl). Step 3:
A mixture of l-Chloro-6-methoxy-3-morpholin-4-yl-isoquinoline (O.OSOg, 0.18 mmol) and tetrabutyl phosphorium hydrgen difloride (0.8 g, 2.8 mmol) [Synlett 1992, (4), 345-6] was heated at 140 °C in microwave for 10 min. the reaction mixture was diluted with EtOAc and filtered through an ISCO 25g precolumn with a layer of silicon gel on the top, removed the solvent to provide the product (0.037 mg, 77%): 'H NMR (CHLOROFORM-D) 8 ppm 3.48 (m, 4 H), 3.84 (m, 4 H), 3.89 (s, 3 H), 6.46 (d, 7=1.22 Hz, 1 H), 6.85 (s, 1 H), 6.90 (dd, J=9.16, 2.44 Hz, 1 H), 7.82 (d, 7=8.85 Hz, 1 H). LC-MS retention time: 1.56 method H), MS m/z 263 (MM). Step 4:
A mixture of l-floro-6-methoxy-3-morpholin-4-yl-isoquinoline (0.037g,0.14 mmol), LaCl3 (0.020 g, 0.8 mmol), t-BuOK (1M/THF, 0.32 mL, 0.32 mmol), andBoc - NH-P3(L-te/f-BuGly)-P2 [(4^)-4-hydroxyl-5-proline]-Pl(l/2,25 Vinyl Acca)-CONHSO2Cyclopropane (0.045 g, 0.08 mmol) in THF (3 mL) was stirred for 3 days. The reaction mixture was diluted with methanol filtered through syringe filter and purified by preparative HPLC to provide the product as a pale yellow foam (0.0158 g, 24%): 'H NMR (methanol-cU) 5 ppm 1.03 (s, 9 H), 1.24 (m, 4 H), 1.31 (s, 9 H), 1.43 (m, 2 H), 1.88 (m, 1 H), 2.24 (m, 2 H), 2.59 (dd, 7=13.43, 6.71 Hz, 1 H), 2.94 (m, 1 H), 3.47 (m, 4 H), 3.83 (m, 4 H), 3.86 (s, 3 H), 4.08 (m, 1 H), 4.28 (s, 1 H), 4.48 (m, 1 H), 5.12 (d, 7=10.38 Hz, 1 H), 5.29 (d, 7=16.48 Hz, 1 H), 5.76 (m, 2 H), 6.74 (d, 7=9.16 Hz, 1 H), 6.94 (s, 1 H), 7.85 (d, 7=8.85 Hz, 1 H), 9.19 (s, 1 H). retention time: 1.86 method H), MS m/z 799 (M*+l). Example 386: Preparation of Compound 386.
Compound 386 Compounds 386 was prepared using the methods described herein.
Section I:
All compounds in section I were analyzed by the LC/MS methodology, which has the
following conditions.
Method A: Xterra C18 S7 3.0 x 50 mm
Gradient: 100% solvent A / 0% solvent B to 0% solvent A / 100% solvent B
Gradient time: 3 min.
Hold time: 1 min.
Flow rate: 4 mL/min.
Detector Wavelength: 220 nm
Solvent A: 10% MeOH / 90% H2O / 0.1% TFA
Step 1:
To a solution of Boc-L-hydroxyproline (0.723 g, 3.13 mmol) in DMSO, KO'Bu (0.808 g, 7.2 mmol) was added under a nitrogen atmosphere. The suspension
was stirred at room temperature for 1.5 hours, and 4-chloro-6-methyl-2-(tiifluoromethyl)quinoline (0.916 g, 3.75 mmol) was added in two portions. The mixture was stirred at room temperature for three hours, and 1.3 equivalents of HCI (IN) was used to neutralize the reaction. Buffer solution of pH 4.0 was added and the pH was adjusted to pH 4-5. The aqueous layer was extracted with ethyl acetate, (3 x 25mL) and the combined organic layers were washed with brine (20 mL) and dried over MgSC>4 to yield the titled compound as a white solid (crude yield not calculated). The crude product was taken into the next step. LC/MS rt-min (MH1"): 2.48 (441.5) (method A).
Step 2:
A solution of the crude product from Step 1,4-(6-methyl-2-trifluoromethyl-quinolin-4-yloxy)-pyrrolidine-l,2-dicarboxylic acid 1-tert-butyl ester (assumed 3.13 mmol), in THF (10 mL) and methanol (10 mL) was cooled to 0° C. TMSCN2 2M in hexanes (~ 1.3 eq) was slowly added to the stirring solution under a nitrogen atmosphere until gas was no longer emitted from the solution. The fully reacted solution was then concentrated in vacuo, and purification by a Biotage 40M column (eluted 10% - 30% ethyl acetate in hexanes) afforded the pure titled compound as a white foam (976 mg, 69% over Step 1&2) LC/MS rt-min (MH+): 2.60 (477) (method A).
Step 3:
A solution of the product from Step 2 (0.976 g, 2.15 mmol) in DCM (7 mL) and TFA (6.62 mL) was stirred at room temperature for one hour. The solvent was removed in vacuo and the residue was suspended in IN HCI in diethy] ether (8 mL), gently stirred, and concentrated in vacuo. This procedure was repeated and the resulting product was placed on an oil pump overnight to yield a white solid in quantitative yield.
'H NMR: (DMSO-iU) 6 2.50 (s, 3H), 2.57- 2.6 (m, IH), 2.66-2.71 (m, IH), 3.62-3.65 (br d, J = 15 Hz, IH), 3.80-3.81 (m, 4H), 4.8 (br s, IH), 5.7 (s, IH), 7.46 (s, IH), 7.72-7.75 (d, J = 7.5 Hz, IH), 7.98-7.8 (d, J = 8.5 Hz, IH), 8.24 (s, IH), 9.54 (br s, IH); LC/MS rt-min (MET): 1.61 (355) (method A).
Step 4:
The product from Step 3 (assumed quantitative yield, 2.746 mmol) was added to a solution of BOC-t-Butyl-L-glycine (0.635 g, 2.746 mmol) in DCM (20 mL) under a nitrogen atmosphere. This step was followed by the addition of HOBt (0.408 g, 3.02 mmol), DIPEA (3.35 mL, 19.2 mmol), and HBTU (1.56 g, 4.12 mmol). A peach colored solution immediately resulted and the reaction was left to stir at room temperature overnight. 10 mL DCM was added to the completed reaction in order to increase the volume, and the reaction was quenched with pH 4.00 buffer solution (25 mL). The mixture was acidified to a pH of 4.5 using IN HC1, and the aqueous phase was extracted with DCM (3 x 20 mL). The organic phase was washed twice with pH 4.00 buffer solution (20 mL), saturated NaOH (25 mL), and brine (20 mL), and then dried with MgSCu. The resulting solution was concentrated in vacuo and purified by a Biotage 40M column (eluted 10% - 40% ethyl acetate in hexanes). This purification afforded the pure titled compound as a white solid (1.11 g, 89%).
'H NMR: (DMSO-de) 6 0.96-1.02 (retainers, 3:2, s, 18H), 2.27-2.33 (m, 1H), 2.50 (s, 3H), 2.68-2.72 (m, 1H), 3.67 (s, 3H), 4.02-4.04 (m, 1H), 4.43-4.45 (br d, J = 15 Hz, 2H), 4.58-4.61 (t, 1H), 5.60 (br s, 1H), 6.72-6.74 (br d, / = 15 Hz, 1H), 7.38 (s, 1H), 7.68-7.73 (m, 1H), 7.95-7.97 (m, 2H); LC/MS rt-min (MH*): 2.61 (590) (method A).
Step 5:
LiOH (0.138 g, 5.78 mmol) was dissolved in water (10 mL) by heating and sonication. The LiOH solution and MeOH (10 mL) were added to a solution of the pure material from Step 4 (1.09 g, 1.93 mmol) in THF (lOmL). The mixture immediately turned a vivid blue color. The reaction was left to stir at room temperature for 3 hours and was then acidified with IN HC1 (5.78 mL, 5.78 mmol). The reaction was quenched with pH4.00 buffer solution and the pH was adjusted to pH 4.5 using IN aqueous NaOH. The aqueous layer was extracted with EtOAc (3 x 23 mL), washed with brine (20 mL), and dried over MgSO4. The filtered solution
was concentrated in vacuo and left on a vacuum line overnight. The crude product (957 mg, 90% yield) was taken into the next step. LC/MS rt-min (MH+): 2.51 (577) (method A).
Step 6:
The crude product from Step 5 (60 mg, 0.11 mmol) was dissolved in DCM (5 mL) and cyclopropanesulfonic acid (1 (#)-amino-2 (S)-vinyl-cyclopropanecarbonyl)-amide hydrochloride salt (Example 1, Step 8) (0.029 g, 0.11 mmol) was added. DIPEA (0.094 mL, 0.541 mmol), and then HATU (0.0575,0.151 mmol) were added under a nitrogen atmosphere. The reaction was left to stir at room temperature for about 8 hours. 10 mL DCM was added to the solution in order to increase the volume, and the reaction was quenched with pH 4.00 buffer solution (10 mL). The mixture was acidified using IN HC1 to a pH of 4-5, and the aqueous phase was extracted with DCM (3 x 20 mL). The organic phase was washed twice with pH 4.00 buffer solution (10 mL) and brine (10 mL), and then dried over MgSC>4. The resulting solution was concentrated in vacuo and purified by a Biotage 12M column (eluted 10% - 40% acetone in hexanes). This purification afforded Compound 410 as a white powder (29 mg, 35%).
'HNMR: (DMSO-da) 6 0.976-1.12 (m, 24 H), 1.36-1.39 (m, 1H), 1.70-1.72 (m, 1H), 2.15-2.25 (m, 2H), 2.50-2.52 (m, 4H), 2.91-2.96 (m, 1H), 3.97-4.01 (m, 2H), 4.40-4.47 (m, 2H), 5.09-5.11 (d, J= lOHz, 1H), 5.21-5.24 (d, J = 15Hz, 1H), 5.59-5.66 (m, 2H), 6.65-6.67 (d, NH), 7.43 (s, 1H), 1.12-1.14 (d, J = 10 Hz, 1H), 7.90 (s, 1H), 7.98-8.0 (d, J = 10 Hz, 1H), 8.87 (s, NH), 10.35 (s, NH); LC/MS rt-min (MH*): 2.65 (789.61) (method A).
To a solution of Boc-L-hydroxyproline (2.00 g, 8.65 mmol) in THF (25 mL), NaH (0.795g. 19.87 mmol) was added under a nitrogen atmosphere. The suspension was stirred at room temperature for 15 minutes, and 4,6-dichloropyrimidine (2.58 g, 17.30 mmol) was added in two portions. The mixture was stirred at room temperature for one hour and 1.3 equivalents of HC1 (IN) were used to neutralize the reaction. pH 4.0 buffer solution was added and the pH was adjusted to pH 5. Ethyl acetate was used to extract the aqueous phase (3 x 25mL) and the organic layers were washed with brine (20 mL) and dried over MgSC>4 to yield the titled compound as a white solid (crude yield not calculated). The crude product was taken into the next step. LC/MS rt-min (MH+): 1.91 (366.2) (method A).
Step 2:
A solution of the crude product from Step 1, (assumed 8.65 mmol), in THF (40 mL) and methonal (40 mL) was cooled to 0° C. TMSCN2 2M in hexanes (~ 1.3 eq) was slowly added to the stirring solution under a nitrogen atmosphere until gas was no longer emitted from the solution. The fully reacted solution was then concentrated in vacuo, and purification by a Biotage 40M column (eluted 20% - 40% ethyl acetate in hexanes) to afford the pure titled compound as a white foam (497 mg, 16% over steps 2a-2b).
'HNMR: (DMSO-dd) 8 1.34-1.38 (rotamers, 2:1, 9H), 2.25-2.29 (m, 1H), 2.53-2.56 (m, 1H), 3.58-3.75 (m, 2H), 3.69 (s, 3H), 4.28-4.33 (m, 1H), 5.59 (s, 1H), 7.24 (s, 1H), 8.69 (s, 1H); LC/MS rt-min (MH+): 2.08 (380.14) (method A).
Step 3:
A solution of the pure product from Step 2 (472 mg, 1.83 mmol) in DCM (3 mL) and TFA (5.65 mL) was stirred at room temperature for one hour. The solvent was removed in vacuo, the residue was suspended in IN HCI in diethyl ether (7.33 mL), gently stirred and concentrated in vacuo. This procedure was repeated, and the resulting product was placed on an oil pump overnight to yield a white solid in quantitative yield. LC/MS rt-min (MH+): 0.55 (258.35) (method A).
Step 4:
The product from Step 3 (assumed quantitative yield, 1.83 mmol) was added to a solution of BOC-t-Butyl-L-glycine (0.424 g, 1.83 mmol) in DCM (1 1 mL) under a nitrogen atmosphere. This step was followed by the addition of HOBt (0.272 g, 2.02 mmol), DIPEA (2.23 mL, 12.82 mmol), and HBTU (1.04 g, 2.75 mmol). The reaction was left to stir at room temperature for 15 hours. 15 mL DCM was added to the solution in order to increase the volume, and the reaction was quenched with pH
HC1, and the aqueous phase was extracted with DCM (3 x 20 mL). The organic phase was washed twice with pH 4.00 buffer solution (20 mL), saturated NaOH (25 mL), brine (20 mL), and dried over MgSO4. The resulting solution was concentrated in vacuo and purified by a Biotage 40S column (eluted 20% - 50% ethyl acetate in hexanes). This purification afforded the pure titled compound as a white solid (454 mg, 53%).
'HNMR: (DMSO-de) 8 0.94 (s, 9H), 1.25 (s, 9H), 2.21-2.27 (m, IH), 2.48-2.55 (m, IH), 3.64 (s, 3H), 3.86-4.02 (m, 2H), 4.29-4.31 (d, / = 10 Hz, IH), 4.46-4.49 (t, IH), 5.75 (br s, IH), 6.72-6.74 (d, NH), 7.12 (s, IH), 8.71 (s, IH); LC/MS rt-min (MET): 2.27 (493.5) (method A).
Step 5:
LiOH (0.0141 g, 0.589 mmol) was dissolved in water (7.5 mL) by heating and sonication. The LiOH solution was added to a solution of the pure material from Step 4 (252 mg, 0.535 mmol) in THF (7.5mL), and left to stir at room temperature. The reaction was complete after 3 hours. It was quenched with pH 4.0 buffer and acidified to a pH of approximately 4.5 with IN HC1. The aqueous phase was extracted with EtOAc (3 x 25 mL), and the organic phase was washed with brine (20 mL) and dried over MgSO4. The filtered solution was concentrated in vacuo and left on a vacuum line overnight. The crude product (231 mg, 95% yield) was taken into the next step.
'H NMR: (DMSO-do) 5 0.94 (s, 9H), 1.25 (s, 9H), 2.14-2.22 (m, IH), 2.50-2.54 (m, IH), 3.84-3.876 (d, J = 150 Hz, IH), 3.97-3.99 (d, J = 10 Hz, IH), 4.27-4.30 (d, / = 15 Hz, IH), 4.37-4.40 (t, IH), 5.63 (br s, IH), 6.69-6.71 (d, NH), 7.12 (s, IH), 8.71 (s, IH), 12.56 (br s, OH); LC/MS rt-min (MH+): 2.24 (479.5) (method A).
Step 6:
The pure material from Step 5 (80 mg, 0.146 mmol), and phenylboronic acid (0.0178 g, 0.146 mmol) were solvated in DMF (2 mL). The solution was placed under a
nitrogen atmosphere and 2M aqueous Na2CO3 (0.146 mL, 0.292 mmol) was added. Five mole percent of Tetrakis(triphenyl)phosphine)-palladium (0) was added (8.44 mg, 0.0073 mmol) and the mixture was heated by microwave using the Personal Chemistry Emrys Optimizer for 50 minutes at 140°C. Palladium black precipitated out of the reaction upon completion. The mixture was acidified with one equivalent of IN HC1, and filtered through a syringe, using MeOH to extract the product. The product was purified by prep HPLC (column - 4 Xterra S5 30 x 75 mm, solvent -70% A / 30% B - 30% A / 70% B (where solvent A is 10% MeOH, 90% H20,0.1 % TFA and solvent B is 90% MeOH, 10% H20,0.1% TFA), gradient time -15 min., hold time - 1 min., flow rate - 40 mL/min, retention time of pure product-10.45-11.37). Fractions containing the desired product were neutralized with IN NaOH and placed in the speed vacuum for approximately 4 hours. The fractions were combined and pH 4.0 buffer (15mL) was added. The pH was adjusted to pH 4-5 using IN HC1, aiiu me aqucuuo layci was CAUUCICU wjin cinji accHiuc \J A ^unu^;. iiu; uigcuuo tcijrci was washed with brine (15 mL), dried over MgSO4, and concentrated in vacuo. The product was placed on an oil pump to dry overnight, and an viscous oil was obtained (37 mg, 50%). LC/MS rt-min (MH+): 2.37 (499.3) (method A).
Step 7:
The product from Example 411, Step 6 (36.7 mg, 0.061 mmol) was dissolved in DCM (4 mL) and cyclopropanesulfonic acid (1 (7?)-amino-2 (5)-vinyl-cyclopropanecarbonyl)-amide hydrochloride salt (Example 1, Step 8) (0.0164 g, 0.161 mmol) was added. DIPEA (0.0534 mL, 0.307 mmol), and then HATU (0.0326, 0.0858 mmol) were added under a nitrogen atmosphere. The reaction was left to stir at room temperature for 3 hours. 10 mL DCM was added to the solution in order to increase the volume, and the reaction was quenched with pH 4.00 buffer solution (10 mL). The mixture was acidified to a pH of 4-5 using IN HC1, and the aqueous phase was extracted with DCM (3 x 15 mL). The organic phase was washed twice with pH 4.00 buffer solution (10 mL) and brine (10 mL), and then dried over MgS04. The resulting solution was concentrated in vacuo and purified by a Biotage
12M column (eluted 20% - 40% acetone in hexanes). This purification afforded the pure Compound 411 as a white powder (7 mg, 15%).
'H NMR: 6 1.07-1.46 (m, 24 H), 1.87-1.90 (m, 1H), 2.22-2.32 (m, 2H), 2.51-2.55 (m, 1H), 2.92-2.97 (m, 1H), 4.04-4.07 (d, 7= 15 Hz, 1H), 4.20-4.22 (d, / = 10 Hz, 1H), 4.36-4.38 (d, J= 10 Hz, 1H), 4.47-4.50 (t, 1H), 5.12-5.14 (d, J= 10 Hz, 1H), 5.29-5.33 (d, /= 20 Hz, 1H), 5.73-5.82 (m, 2H), 6.59-6.60 (d, NH), 7.29 (s, 1H), 7.50-7.51 (m, 3H), 8.03-8.05 (m, 2H), 8.81 (s, 1H); LC/MS rt-min (MH+): 2.50 (711.4) (method A).
The product from Example 411, Step 5 (80 mg, 0.146 mmol) was solvated in DMF (2 mL), and 2-thiopheneboronic acid (0.028 g, 0.219 mmol) was added to the solution. The reaction was placed under a nitrogen atmosphere and 2M aqueous Na2C03 (0.146 mL, 0.292 mmol), and 5 mole percent of Tetrakis(triphenyl)phosphine)-palladium (0) were added (8.44 mg, 0.0073mmol). The reaction was heated by
microwave using the Personal Chemistry Emrys Optimizer for 30 minutes at 150°C. Palladium black precipitated out of the reaction upon completion. The mixture was acidified with one equivalent of IN HC1, and filtered through a syringe, using MeOH to extract the product. The product was purified by prep HPLC (column - 4 Xterra S5 30 x 75 mm, solvent - 70% A / 30% B - 30% A / 70% B (where solvent A is 10% MeOH, 90% H20, 0.1% TFA and solvent B is 90% MeOH, 10% H20, 0.1% TFA), gradient time - 15 min., hold time - 1 min., flow rate - 40 mL/min, retention time of pure product - 10.45-11.37). The fractions containing the desired product were neutralized with IN NaOH and placed in the speed vacuum for approximately 4 hours. The fractions were then combined, and pH 4.0 buffer (15mL) was added. The pH was adjusted to pH 4-5 using IN HC1 and the aqueous layer was extracted with ethyl acetate (3 x 20mL). The organic layer was washed with brine (15 mL), dried over MgSO4, and concentrated in vacuo. The product was placed on an oil pump to
LC/MS rt-min (MlT): 2.37 (499.3) (method A).
Step 2:
The product from Example 412, Step 1 (39 mg, 0.0773 mmol) was dissolved in DCM (4 mL) and cyclopropanesulfonic acid (1 (tf)-amino-2 (S)-vinyl-cyclopropanecarbonyl)-amide hydrochloride salt (Example 1, Step 8) (0.0206 g, 0.0773 mmol) was added. DIPEA (0.015 mL, 0.387 mmol), and then HATU ( 0.041 1 g, 0.108 mmol) were added under a nitrogen atmosphere. The reaction was left to stir at room temperature for 15 hours. 10 mL DCM was added to the solution in order to increase the volume, and the reaction was quenched with pH 4.00 buffer solution (10 mL). The mixture was acidified to a pH of 4-5 using IN HC1 and the aqueous phase was extracted with DCM (3 x 15 mL). The organic phase was washed twice with pH 4.00 buffer solution (10 mL) and brine (10 mL), and then dried over MgSO4. The resulting solution was concentrated in vacuo and purified by a Biotage 12M column (eluted 20% - 50% acetone in hexanes). This purification afforded the pure Compound 412 as a white powder (4 mg, 7%).
'HNMR: 5 1.04-1.29 (m, 24H), 1.45-1.47 (m, 1H), 1.89-1.91 (m, 1H), 2.26-2.31 (m, 2H), 2.51-2.53 (m, 1H), 2.92-2.95 (m, 1H), 4.05-4.07 (d, J = 10 Hz, 1H), 4.22-
4.24 (d, 7= 10 Hz, 1H), 4.38-4.40 (d, J= 10 Hz, 1H), 4.48-4.52 (m, 1H), 5.15-5.17 (d, J = 10 Hz, 1H), 5.32-5.36 (d, J = 20 Hz, 1H), 5.76-5.83 (m, 2H), 6.65-6.67 (d, NH), 7.19-7.21 (m, 2H), 7.66-7.67 (d, 7 = 5 Hz, 1H), 7.86-7.87 (d, J = 5 Hz, 1H), 8.69 (s,lH); LC/MS rt-min (MH+): 2.45 (739.4) (method A).
Example 413: Preparation of Compound 413
Stepl:
2-Bromo-6-chloropyridine (3.0 g, 15.55 mmol) and phenylboronic acid (1.896 g, 15.55 mmol) were solvated in a mixture of EtOH, toluene and water (2:1:1; 120 mL). Aqueous 1M NaaCOa (15.55 mL, 31.10 mmol) and 5 mole percent of Tetrakis(triphenyl)phosphine)-palladium (0) (0.896 g, 0.775 mmol) were added under a nitrogen atmosphere. The reaction was refluxed at 90°C for one hour. Water (20 mL) was added to quench the reaction, and the aqueous layer was extracted with diethyl ether (4 x 25 mL). The organic layer was then washed with brine, dried over MgSC>4, and concentrated in vacuo. The crude mixture was purified by a Biotage 40S column (eluted 2% -10% ethyl acetate in hexanes), to afford the pure titled compound (1.45 g, 74%).
'H NMR: 6 7.24-7.26 (m, 1H), 7.42-7.48 (m, 3H), 7.63-7.70 (m, 2H), 7.98-8.00 (m, 2H);
LC/MS rt-min (MET): 2.04 (190.18) (method A) Step 2:
TFA (20 mL) was added to the pure solid obtained in Step 1 (3.27 g, 17.24 mmol). A 30% solution of KfeOi (5.55 mL, 48.9 mmol) was slowly added dropwise to the stirring solution under a nitrogen atmosphere. The reaction was heated to reflux at 100°C for 3 hours, and 0.5 additional equivalents of H2O2 (2.27 mL, 25 mmol) were added to the solution. The reaction continued to stir at 100°C for 2 hours. The flask was allowed to cool to room temperature before the solution was concentrated in vacuo to approximately half of the original volume. Water (40 mL) was added to quencn tne reaction and tne aqueous layer was extracted witn etnyi acetate p x 3U mL). The organic layer was washed once with brine (20 mL), dried over MgSO4, and concentrated in vacuo. The crude product was purified by Biotate 40M column (eluted 10% - 75% ethyl acetate in hexanes) to yield a pale yellow liquid (0.81 g, 23%). Pure starting material was also recovered for future use (1.895 g, 58%). 'H NMR: 6 7.40-7.42 (t, 1H), 7.49-7.50 (m, 3H), 7.59-7.61 (d, J = 10 Hz, 1H), 7.77-7.82 (m, 3H); LC/MS rt-min (MH+): 1.12 (206.37) (method A).
Step 3:
The purified product from Step 2 (0.81 g, 3.94 mmol) was added to a solution of SOC12 (25 mL) and stirred at 60°C for 2 hours. The temperature was then increased to 80°C in order to force the reaction to completion, and it was heated for an additional 30 min. The solution was concentrated in vacuo and quenched carefully with ice. The pH was adjusted to a pH of 4-5 using ION NaOH, keeping the flask in
an ice bath. The aqueous phase was extracted with ether (4 x 25 mL), and the organic layer was washed with brine (20 mL), dried over MgSO4, and concentrated in vacuo. The crude, yellow liquid was purified by Biotage 40S column (eluted 2%-10% ethyl acetate in hexanes). A slightly yellow, viscous liquid was obtained (538 mg, 61%).
'H NMR: 6 7.52-7.55 (m, 3H), 7.73 (s, 1H), 8.10-8.11 (m, 2H), 8.17 (s, 1H); LC/MS rt-min (MIT): 2.62 (225.33) (method A).
Step 4:
To a solution of Boc-L-hydroxyproline (555 mg, 2.40 mmol) in DMSO (4 mL), KOlBu (0.619 g, 5.52 mmol) was added under a nitrogen atmosphere. The suspension was stirred at room temperature for 45 min., and 2,4-dichloro-6-phenyl-pyridine (purified in Step 3.) (538 mg, 2.40 mmol) was added in two portions. The mixture was stirred at room temperature for two hours and 1.3 equivalents of HC1 (IN) were used to neutralize the reaction. Buffer solution of pH 4.0 was added, and the pH was adjusted to pH 4-5. Ethyl acetate was used to extract the aqueous phase, (3 x 25mL) and the organic phase was washed with brine (20 mL) and dried over MgSC>4 to yield the titled compound as a white solid (crude yield = 962 mg). The crude product was taken into the next step. LC/MS rt-min (NOT): 2.55 (419.27) (method A).
Step 5:
A solution of the crude product from Step 4 (assumed.2.4 mmol) in THF (10 mJL) and methonal (10 mL) was cooled to 0° C. TMSCN2 2M in hexanes (~ 1.3 eq) was slowly added to the stirring solution under a nitrogen atmosphere until gas was no longer emitted from the solution. The fully reacted solution was then concentrated in vacuo, and purification by a Biotage 25S column (eluted 10% - 50% ethyl acetate in hexanes) afforded the pure titled compound as a white foam (503 mg, 48% over steps 4d-4e). 'HNMR- (DMsn-rU s i ^s.i w frnfam*™ ^-? QT-H ? 91.9 9* (m twy ? *c\-i *&
(m, 1H), 3.67-3.70 (m, 5H), 4.26-4.34 (m, 1H), 5.35 (br s, 1H), 7.14-7.15 (m, 1H),
7.47-7.55 (m, 4H), 8.05-8.09 (m, 2H);
LC/MS rt-min (MM*): 2.69 (455.52) (method A).
Step 6:
A solution of the pure product from Step 5 (503 mg, 1.16 mmol) in DCM (2.5 mL) and TFA (3.58 mL) was stirred at room temperature for one hour. The solvent was removed in vacuo. and the residue was suspended in IN HCI in diethyl ether (6 mL), gently stirred, and concentrated in vacuo. This procedure was repeated and the resulting product was placed on an oil pump to yield a white solid in quantitative yield. The crude product was carried into the next step.
The product from Step 6 (assumed quantitative yield, 1.83 mmol) was added to a solution of BOC-t-Butyl-L-glycine (0.424 g, 1.83 mmol) in DCM (11 mL) under a nitrogen atmosphere. This step was followed by the addition of HOBt (0.272 g, 2.02 mmol), DIPEA (2.23 mL, 12.82 mmol), and HBTU (1.04 g, 2.75 mmol). The reaction was left to stir at room temperature for 15 hours. 15 mL DCM was added to the solution in order to increase the volume, and the reaction was quenched with pH 4.00 buffer solution (15 mL). The mixture was acidified to a pH of 4.5 using IN HC1, and the aqueous phase was extracted with DCM (3 x 20 mL). The organic phase was washed twice with pH 4.00 buffer solution (20 mL), saturated NaOH (25 mL), brine (20 mL), and dried over MgSO4. The resulting solution was concentrated in vacuo and purified by a Biotage 40S column (eluted 20% - 50% ethyl acetate in hexanes). This purification afforded the pure titled compound as a white solid (454 mg, 53%).
'H NMR: (DMSO-de) 6 0.96 (s, 9H), 1.19 (s, 9H), 2.17-2.29 (m, IH), 2.48-2.58 (m, IH), 3.65 (s, 3H), 3.81-3.89 (m, IH), 4.05-4.08 (m, IH), 4.21-4.26 (m, IH), 4.44-4.50 (t, IH), 5.45 (br s, IH), 6.72-6.75 (d, J~ 15 Hz, IH), 7.09 (s, IH), 7.46-7.51 (m, 4H), 8.02-8.06 (m, 2H); LC/MS rt-min (MH+): 2.27 (493.5) (method A).
Step 8:
LiOH (0.0233 g, 0.973 mmol) was dissolved in water (10 mL) by heating and sonication. The LiOH solution was added to a solution of the pure material from Step 7 (483 mg, 0.885 mmol) in THF (lOmL), and the mixture immediately turned a pale peach color. The reaction was left to stir at room temperature for 1 hour and was acidified with IN HC1 (0.973 mL, 0.974 mmol). The reaction was quenched with pH 4.00 buffer solution and the pH was adjusted to a pH between 4 and 5. The aqueous iayer was extracted with EtOAc (3 x 20 mL), washed with brine (if) mL) and dried over MgSC>4. The filtered solution was concentrated in vacuo and left on a vacuum line overnight. The crude product (480 mg, >95% yield) was taken into the next step. 'H NMR: (DMSO-d
Step 9:
The dipeptide from Step 8 (100 mg, 0.188 mmol) and 2-thiopheneboronic acid (0.0481 g, 0.376 mmol) were solvated in DMF (2 mL). The solution was placed under a nitrogen atmosphere and 2M aqueous KF (0.282 mL, 0.376 mmol) was added. Five mole percent of Tetrakis(triphenyl)phosphine)-palladium (0) was added
(0.011 mg, 0.0094 mmol) and the mixture was heated by microwave using the Personal Chemistry Emrys Optimizer for 30 minutes at 150°C. Palladium black precipitated out of the reaction upon completion. The mixture was acidified with one equivalent of IN HC1 and filtered through a syringe, using MeOH to extract the product. The product was purified by prep HPLC (column - 4 Xterra S5 5um 30 x 75 mm, solvent - 85% A / 15% B -10% A / 90% B (where solvent A is 10% MeOH, 90% H20,0.1% TFA and solvent B is 90% MeOH, 10% H20,0.1% TFA), gradient time - 15 min., hold time - 1 min., flow rate - 40 mL/min, retention time of pure product - 16.23). Fractions containing the desired product were neutralized with IN NaOH and placed in the speed vac for approximately 2 hours. The fractions were combined, and pH 4.0 buffer (15mL) was added. The pH was adjusted to pH 4-5 using IN HC1, and the aqueous layer was extracted with ethyl acetate (3 x 20mL). The organic layer was washed with brine (15 mL), dried over MgSC>4. and concentrated in vacuo. The product was placed on an oil pump to dry overnight, and a pale yellow oil was obtained (44 mg, 40%). LC/MS rt-min (MH+): 2.7 (580.54) (method A).
Step 10:
The product from Example 413, Step 9 (43 mg, 0.0742 mmol) was dissolved in DCM (2 mL) and cyclopropanesulfonic acid (1 (^?)-amino-2 (5)-vinyl-cyclopropanecarbonyl)-amide hydrochloride salt (Example 1, Step 8) (0.0198 g, 0.0742 mmol) was added. DIPEA (0.0646 mL, 0.371 mmol), and then HATU (0.039 g, 0.0104 mmol) were added under a nitrogen atmosphere. The reaction was left to stir at room temperature for 4.5 hours. 10 mL of DCM was added to the solution in order to increase the volume, and the reaction was quenched with pH 4.00 buffer solution (10 mL). The mixture was acidified to a pH of 4-5 using IN HC1, and the aqueous phase was extracted with DCM (3 x 15 mL). The organic phase was washed twice with pH 4.00 buffer solution (10 mL) and brine (10 mL), and then dried over MgSO4. The resulting solution was concentrated in vacuo and purified by a Biotage 12S column (eluted 10% - 50% acetone in hexanes). The compound was isolated and re-purified by prep-HPLC (column - YMC ODS-A 20 x 50 mm s5, solvent - 60% A / 40% B - 10% A / 90% B (where solvent A is 10% MeOH, 90% H20,0.1% TFA and
solvent B is 90% MeOH, 10% H20,0.1% TFA), gradient dme - 8 min., hold time -
2 min., flow rate - 25 mL/min, retention time of pure
product - 8.702). This purification afforded the pure Compound 413 as a pale orange
oil (22.3 mg, 38%).
'HNMR: 8 1.02-1.29 (m, 24H), 1.42-1.45 (m, 1H), 1.87-1.89 (m, 1H), 2.24-2.3O
(m, 2H), 2.53-2.57 (m, 1H), 2.92-2.97 (m, 1H), 4.06-4.08 (d, .7 = 10 Hz, 1H), 4.25 (s,
1H), 4.31-4.33 (d, 7= 10 Hz, 1H), 4.45-4.49 (t, 1H), 5.12-5.14 (d, J= 10 Hz, 1H),
5.29-5.32 (d, / = 15 Hz, 1H), 5.46 (br s, 1H), 5.73-5.80 (m, 1H), 7.13-7.15 (m, 1H),
7.29-7.30 (d, J = 5 Hz, 2H), 7.42-7.53 (m, 4H), 7.75-7.56 (d, J = 5 Hz, 1H), 8.07-8.09
(d,7=10Hz,2H).
LC/MS rt-min (MH+): 2.79 (792.72) (method A).
Stepl:
The pure material from Example 413, Step 8 (100 mg, 0.188 mmol), and 4-methoxyphenylboronic acid (0.0429 g, 0.282 mmol) were solvated in DMF (2.5 mL). The solution was placed under a nitrogen atmosphere and 2M aqueous
(0.188 mL, 0.376 mmol) was added. Five mole percent of Tetrakis(triphenyl)phosphine)-palladium (0) was added (0.011 mg, 0.0094 mmol), and the mixture was heated by microwave using the Personal Chemistry Erarys Optimizer for 30 minutes at 150°C. Palladium black precipitated out of the reaction upon completion. The mixture was acidified with one equivalent of IN HC1 and filtered through a syringe, using MeOH to extract product. The product was purified by prep HPLC (column - Xterra MS CIS Sum 30 x 50 mm, solvent - 90% A /10% B - 10% A / 90% B (where solvent A is 10% MeOH, 90% H20,0.1% TFA and solvent B is 90% MeOH, 10% H20,0.1% TFA), gradient time - 15 min., hold time- 1 min., flow rate - 45 mL/min, retention time of pure product - 13.72). Fractions containing the desired product were neutralized with IN NaOH and placed in the speed vac for approximately 2 hours. The fractions were combined, and pH 4.0 buffer (15mL) was added. The pH was adjusted to pH 4-5 using IN HC1, and the aqueous layer was extracted with ethyl acetate (3 x 20mL). The organic layer was washed with brine (15 mL), dried over MgSO^ and concentrated in vacuo. The product was placed on an oil pump to dry overnight, and a viscous oil was obtained (44 mg, 50%). LC/MS rt-min (MH+): 2.23 (604.61) (method A).
Step 2:
The product from Example 414, Step 1 (43 mg, 0.0712 mmol) was dissolved in DCM (2 mL) and cyclopropanesulfonic acid (1 (/?)-amino-2 (5)-vinyl-cyclopropanecarbonyl)-amide hydrochloride salt (Example 1, Step 8) (0.01899 g, 0.0712 mmol) was added. DffEA (0.062 mL, 0.356 mmol), and then HATU (0.038 g, 0.0997 mmol) were added under a nitrogen atmosphere. The reaction was left to stir at room temperature for 4.5 hours. 10 mL DCM was added to the solution in order to increase the volume, and the reaction was quenched with pH 4.00 buffer solution (10 mL). The mixture was acidified to a pH of 4-5 using IN HC1, and the aqueous phase was extracted with DCM (3 x 15 mL). The organic phase was washed twice with pH 4.00 buffer solution (10 mL) and brine (10 mL), and then dried over MgSO4. The resulting solution was concentrated in vacuo and purified by a Biotage 12S column (eluted 20% - 50% acetone in hexanes). The compound was isolated and re-purified by prep-HPLC (column - YMC ODS-A 20 x 50 mm s5, solvent - 60% A /
40% B - 10% A / 90% B (where solvent A is 10% MeOH, 90% H2O, 0.1% TFA and solvent B is 90% MeOH, 10% H20,0.1% TFA), gradient time - 10 min., hold time -2 min., flow rate - 25 mL/min, retention time of pure product - 7.43-8.24). This purification afforded the pure Compound 414 as a pale orange oil (19.4 mg, 34%). 'HNMR: 5 1.02-1.23 (m, 24H), 1.29-1.44 (m, 1H), 1.89-1.95 (m, 1H), 2.24-2.30 (q, 1H), 2.32-2.40 (m, 1H), 2.59-2.62 (m, 1H), 3.90 (s, 3H), 4.10-4.12 (d, J = 10 Hz, 1H), 4.21 (s, 1H), 4.42-4.56 (m, 2H), 5.12-5.14 (d, J = 10 Hz, 1H), 5.28-5.31 (d, J = 15 Hz, 1H), 5.61 (br s, 1H), 5.72-5.80 (m, 1H), 7.14-7.16 (d, /= 10 Hz, 2H), 7.52-7.54 (d, J = 10 Hz, 2H), 7.61-7.62 (m, 2H), 7.95-7.98 (m, 4H); LC/MS rt-min (NOT): 2.35 (816.76) (method A). Example 415: Preparation of Compound 415.
The dipeptide from Example 413, Step 8 (174 mg, 0.327 mmol) and phenylboronic acid (0.06 g, 0.491 mmol) were solvated in DMF (4 mL). The solution was placed under a nitrogen atmosphere and 2M aqueous NaCO3 (0.33 mL, 0.654 mmol) was added. Five mole percent of Tetrakis(triphenyl)phosphine)-palladium (0) was added
(0.019 mg, 0.0164 mmol) and the mixture was heated by microwave using the Personal Chemistry Emrys Optimizer for 30 minutes at 150°C. Palladium black precipitated out of the reaction upon completion. The mixture was acidified with one equivalent of IN HC1 and filtered through a syringe, using MeOH to extract the product. The product was purified by prep HPLC (column - 5 Xterra c-18 Sum 30 x 100 mm, solvent - 80% A / 20% B -0% A / 100% B (where solvent A is 10% MeOH, 90% H20,0.1% TFA and solvent B is 90% MeOH, 10% H20,0.1% TFA), gradient time - 20 min., hold time - 1 min., flow rate - 40 mL/min, retention time of pure product - 11.28-11.72). Fractions containing the desired product were neutralized with IN NaOH and placed in the speed vac for approximately 2 hours. The fractions were combined, and pH 4.0 buffer (15mL) was added. The pH was adjusted to pH 4-5 using IN HC1, and the aqueous layer was extracted with ethyl acetate (4 x 15mL). The organic layer was washed with brine (15 mL), dried over MgSO4, and concentrated in vacuo. The product was placed on an oil pump to dry overnight. (31.5mg, 17%). LC/MS rt-min (MH+): 2.54 (574.37) (method A).
Step 2:
The product from Example 415, Step 1 (31.5 mg, 0.055 mmol) was dissolved in DCM (3 mL) and cyclopropanesulfonic acid (1 (7?)-amino-2 (S)-vinyl-cyclopropanecarbonyl)-amide hydrochloride salt (Example 1, Step 8) (0.0147 g, 0.055 mmol) was added. DIPEA (0.048 mL, 0.275 mmol), and then HATU (0.029 g, 0.077 mmol) were added under a nitrogen atmosphere. The reaction was left to stir at room temperature for 3.5 hours and an additional 0.3 equivalents of cyclopropanesulfonic acid (1 (/?)-amino-2 (S)-vinyl-cyclopropanecarbonyl)-amide hydrochloride salt were added. The reaction was left to stir for 8 more hours. 10 mL of DCM was added to the solution in order to increase the volume, and the reaction was quenched with pH 4.00 buffer solution (10 mL). The mixture was acidified to a pH of 4-5 using IN HC1, and the aqueous phase was extracted with DCM (4 x 10 mL). The organic phase was washed twice with pH 4.00 buffer solution (10 mL) and brine (10 mL), and then dried over MgSO4. The resulting solution was concentrated in vacuo and purified by prep HPLC (column - YMC ODS-A 30 x 50 mm, solvent -
80% A / 20% B - 10% A / 90% B (where solvent A is 10% MeOH, 90% H20, 0. 1 % TFA and solvent B is 90% MeOH, 10% H20, 0.1% TFA), gradient time - 20 min., hold time - 3 min., flow rate - 30 mL/min, retention time of pure product - 19.6). This purification did not afford a pure compound so it was re-purified by aBiotage!2 S column (eluted 10%-50% acetone in hexanes). This purification afforded the pure titled compound as a pale orange oil (22.3 mg, 38%).
'H NMR: 5 1.02-1.45 (m, 24H), 1.85-1.86 (m, 1H), 2.03-2.11 (m, 2H), 2.42-2.46 (m, 1H), 2.77-2.85 (m, 1H), 4.10-4.12 (m, 1H), 4.25 (s, 1H), 4.31-4.33 (d, J= 10 Hz, 1H), 4.49-4.54 (m, 1H), 5.03-5.05 (d, J = 10 Hz, 1H), 5.20-5.24 (d, J = 20 Hz, 1H), 5.44 (br s, 1H), 5.82-5.94 (m, 1H), 7.33 (s, 2H), 7.43-7.50 (m, 6 H), 8.09-8.10 (d, / = 5 Hz, 4 H); LC/MS rt-min (MH+): 2.37 (786.37) (method A).
;
In section J the LC/MS method utilized was the following:
Columns: Method A: YMC ODS-A C18 S7 (4.6 x 33 mm) Method B: YMC Xterra ODS S7 (3.0 x 50mm) Method C: Xterra ms C18 (4.6 x 33mm) Method D: YMC ODS-A CIS S3 (4.6 x 33 mm)
Gradient: 100% solvent A/ 0% solvent B to 0% solvent A/ 100% solvent B
Gradient time: 3 min.
Hold Time: 1 min.
Flow Rate: 5 mL/min.
Detector Wavelength: 220 nm.
Solvents: Solvent A: 10% MeOH/ 90% water/ 0.1% TFA. Solvent B: 90% MeOH/
10% water/ 0.1% TFA.
Example 420: Preparation of Compound 420
To a solution of PPh3 (16.8 g, 63.9 mmol) in THF (150 mL) was added dropwise DEAD (10.1 mL, 63.9 mmol) and the solution was stirred for 30 min at room temperature. A solution of Boc-cis-(L)-Hyp-OMe (10.5 g, 42.6 mmol) in THF (50 mL) was added slowly, followed by 5-bromo-pyridin-3-ol (prepared according to RE. Ziegler et al., J. Am. Chem. Soc., (1973), 95,7458) (8.90 g, 51.1 mmol) portion wise. The resulting solution was stirred at 45°C for 18 hrs. The solution was concentrated in vacuo, and the residue partitioned between diethyl ether (200 mL) and IN NaOH (50 mL). The organic phase was dried (MgS04) and the ethereal
solution was after filtration concentrated to half its volume. A precipitate formed that was removed by filtration. The filtrated was concentrated in vacuo and purified by a Biotage 65 M column (eluted with hexanes - EtOAc 2:1,3:2, 1:1) to provide the title compound (11.9 g, 69%) as a red oil.
'HNMR: (CDCU) 8 1.42,1.45 (s, 9H (rotamers)), 2.25-2.30 (m, 1H), 2.49-2.58 (m, 1H), 3.75,3.81 (s, 3H (rotamers)), 3.66-3.81 (m, 2H (hidden)), 4.42,4.50 (t, J=8 Hz, 1H (rotamers)), 4.92 (m, 1H), 7.36 (s, 1H), 8.20 (s, 1H), 8.32 (s, 1H). LC/MS rt-min (MH+): 2.26 (401,403)(method B).
Step 2:
The product of Step 1 (2.34 g, 5.83 mmol) was dissolved in DCM (20 mL) and TFA (18 mL, 0.23 mole) and stirred at room temperature for 2 hrs. The volatiles were removed in vacuo and the residue partitioned between EtOAc and water. The
OlgaiiJC piidoU Was CAi.iUi.iCU Wilii ilH n^i \i.J ilii^ aiiU UiC CUUiUiiiCU aijUCUUb
extracts were neutralized with satd. NaHCOs (40 mL). The aqueous phase was
extracted with EtOAc (twice) and the combined organic extracts washed with brine
and dried (MgSO4) to give the title compound (1.02 g, 58%, free base) as a colorless
oil.
'HNMR: (DMSO-de) 6 2.12-2.20 (m, 2H), 2.94 (d, 7=12 Hz, 1H), 3.19 (dd, 7=4.5,
12 Hz, 1H), 3.64 (s, 3H), 3.90 (t, 7=8 Hz, 1H), 5.07 (m, 1H), 7.69 (s, 1H), 8.26 (s,
1H), 8.29 (s, 1H).
LC/MS rt-min (MH+): 0.78 (301, 302)(method B).
Step 3:
To a suspension of the product of Step 2 (1.02 g, 3.39 mmol), W-BOC-L-tert-Jeucine (862 mg, 3.73 mmol), and HOBt (458 mg, 3.39 mmoJ) in DCM (15 mL) were added DIPEA (2.36 mL, 13.6 mmol) followed by HBTU (1.61 g, 4.24 mmol). The resulting solution was stirred at room temperature for 15 hrs and quenched with DCM and buffer pH 4 and some IN HC1 to adjust the pH to 4-5. The organic phase was washed with buffer pH 4, satd. NaHCO3 (twice), brine, and dried (MgSO4). Purification using a Biotage 40 M column (eluted hexane - EtOAc 3:2,1:1) afforded the title compound (1.48 g, 85%) as a white solid.
'H NMR: (DMSO-d6) 5 0.94 (s, 9H), 1.17 (s, 9H)r 2.16-2.21 (m, IH), 2.50 (m, (hidden), IH), 3.64 (s, 3H), 3.82 (d, 7=12 Hz, IH), 4.06 (d, 7=9.5 Hz, IH), 4.16 (d, 7=12 Hz, IH), 4.45 (dd, 7=8,9.5 Hz, IH), 5.26 (m, IH), 6.71 (d, 7=9 Hz, NH), 7.75 (s, IH), 8.28 (s, IH), 8.32 (s, IH). LC/MS rt-min (MH*): 2.35 (514, 516)(method B).
Step 4:
To a mixture of the product of Step 3 (98 mg, 0.19 mmol), Pd(PPh3)4 (6.6 mg, 0.00573 mmol), 2M aqueous Na2CO3 (0.191 mL, 0.381 mmol) in toluene (2 mL) was added a solution of phenyl boronic acid (29 mg, 0.24 mmol) in methanol (0.1 mL). The solution was heated at 85°C for 6 h under nitrogen. After cooling to room temperature the mixture was quenched with buffer pH 4 and extracted with EtOAc (2 x 10 mL), and dried (NajSO^. Purification using a Biotage 12 M column (eluted hexane - EtOAc 2:3) afforded the title compound (72 mg, 74%) as a colorless oil. 'HNMR: (methanol-d4) 5 1.05 (s, 9H), 1.31 (s, 9H), 2.29-2.35 (m, IH), 2.68-2.72 (m, IH), 3.77 (s, 3H), 4.00 (d, 7=12 Hz, IH), 4.24 (d, 7=9.5 Hz, IH), 4.41 (d, 7=12 Hz, IH), 4.67 (dd, 7=7.5,10 Hz, IH), 5.36 (m, IH), 6.51 (d, 7=9.5 Hz, NH), 7.79-7.85 (m, 3H), 8.39 (s, IH), 8.59 (s, IH), 8.67-8.68 (m, 2H). LC/MS rt-min (MH*): 2.16 (512)(method B).
Step 5:
To a solution of the product of Step 4 (150 mg, 0.293 mmol) in THF (2 mL) and methanol (2 mL) was added LiOH (14 mg, 0.59 mmol) in water (2 mL). The mixture was stirred for 2 h at room temperature and quenched with IN HC1 until neutral pH. The organic volatiles were removed in vacuo and to the residue was added buffer pH 4. The product was extracted into EtOAc (3 x 10 mL), washed with brine/buffer pH 4 and dried (MgSO4) to yield the title compound in quantitative yield as a white solid after trituration from pentane.
'HNMR: (methanol-d,) 5 1.05 (s, 9H), 1.32 (s, 9H), 2.32-2.38 (m, IH), 2.69-2.74 (m, IH), 3.99 (dd, 7=3,12 Hz, IH), 4.25 (s, IH), 4.40 (d, 7=12 Hz, IH), 4.64 (dd, 7=7.5, 9.5 Hz, IH), 5.36 (m, IH), 7.85-7.87 (m, 3H), 8.40 (s, IH), 8.60 (s, IH), 8.69-8.70 (m, 2H).
LC/MS rt-min (MtT): 2.03 (499)(method B).
Step 6:
To a suspension of the product of Step 5 (93 mg, 0.19 mmol), and the product from Example 1, Step 8 (50 mg, 0.19 mmol) in DCM (2 mL) was added DIPEA (0.163 mL, 0.935 mmol), followed by HATU (92 mg, 0.243 mmol). The resulting mixture was stirred at room temperature for 18 hrs and quenched with DCM and buffer pH 4 and some IN HCI to adjust the pH to 4-5. The layers were separated and the aqueous phase extracted with DCM (10 mL) and dried (Na2SO4). Purification using a Biotage 12 M column (eluted gradient hexane - acetone 20-60%) afforded the title compound (65 mg, 49%) as a white powder.
'HNMR: (DMSO-ds) 5 0.95 (s, 9H), 1.03-1.05 (m, 2H), 1.08-1.10 (m, 2H), 1-26 (s, 9H), 1.36-1.39 (m, IH), 1.69-1.72 (m, IH), 2.09-2.21 (m, 2H), 2.41-2.45 (m, IH),
Hz, IH), 4.36 (t, J= 8.5 Hz, IH), 5.10 (d, 7=10 Hz, IH), 5.23 (d, .7=17.5 Hz, IH), 5.38 (m, IH), 5.59-5.67 (m, IH), 6.54 (s, NH), 7.41-7.46 (m, IH), 7.50-7.53 (m, 2H), 7.65 (s, IH), 7.74-7.75 (m, 2H), 8.28 (s, IH), 8.52 (s, IH), 8.92 (s, NH). LC/MS rt-min (MH+): 2.08 (710)(method B).
Step 1:
To a cold (-5°C) 48% aqueous HBr solution (35 mL) was added 4-chloro-pyridin-2-ylamine (4.18 g, 32.5 mrnol; prepared according to K.S. Gudmundsson et al; Synth. Commun. (1997), 27, 861), followed by the slow addition of bromine (6.7 mL, 0.13 mole). After 20 min sodium nitrite (8.63 g, 0.125 mole) in water (40 mL) was added at the same temperature and stirring was continued for 30 min. The reaction was quenched under ice cooling with ION NaOH (ca 40 mL) to alkaline pH.
The product was extracted into EtOAc (2 x 100 mL) and dried (Na2SO4). The crude
material was purified using a Biotage 40 M column (eluted with 10% EtOAc in
hexanes) to afford the title compound (2.50 g, 40%) as a colorless oil that solidified
upon standing.
'H NMR: (DMSO-ds) 6 7.64 (dd, 7=1.5, 5.5 Hz, 1H), 7.94 (d, 7=1.5 Hz, 1H), 8.40
(d, 7=5.5 Hz, 1H);
LC/MS rt-min (MIT): 1.65 (192, 194,196)(method B).
Step 2:
To a solution of//-BOC-trans-J^-Hyp-OH (3.22 g, 13.9 mrnol) in DMSO (30 mL) was added potassium tert.butoxide (3.90 g, 34.8 mmol) in portions at room temperature under a nitrogen atmosphere. After 1.5 h the product of Step 1 was added in DMSO (5 mL). The mixture was stirred overnight and quenched with water (150 mL). The solution was washed with EtOAc (100 mL). The aqueous phase was acidified to pH 4 with IN HC1. The crude carboxylic acid was extracted into EtOAc (thrice) and dried (MgS04). The residue, as a brown solid, was suspended in THF (20 mL) and MeOH (20 mL) and cooled to 0°C. A solution of trimethylsilyl diazomethane (2 M in hexane, 12 mL) was dropwise added, and the solution concentrated in vacuo after 15 min. Purification using a Biotage 40 M column (eluted with hexanes - EtOAc 2:1,1:1) gave the title compound (3.47 g, 62%) as an off-white powder.
(m, 1H), 3.57 (d, 7=12.5 Hz, 1H), 3.64-3.68 (m, 1H), 3.66,3.69 (s, 3H (rotamers)), 4.27-4.34 (m, 1H), 5.21 (m, 1H), 7.06 (d, 7=6 Hz, 1H), 7.28 (s, 1H), 8.20 (d, 7=6 Hz, 1H); LC/MS rt-min (MH+): 2.59 (401,403)(method B).
Step 3:
The product of Step 2 (2.00 g, 4.98 mmol) was suspended in 4N HC1 in dioxane (10 mL) and IN HC1 in diethyl ether (40 mL) and stirred overnight at room temperature. The resulting suspension was concentrated in vacuo and the residue triturated from pentane to give the title compound in quantitative yield as a white powder. LC/MS rt-min (NOT): 0.24 (301, 303)(method B).
Step 4:
To a suspension of the product of Step 3 (assumed 4.98 mmol), N-cyclopentyloxycarbonyl-L-tert-leucine (1.24 g, 5.10 mmol), and HOBt (673 mg, 4.98 mmol) in DCM (25 mL) was added DIPEA (4.34 mL, 24.9 mmol) followed by HBTU (2.36 g, 6.23 mmol). The resulting solution was stirred at room temperature
for 15 hrs and quenched with DCM and buffer pH 4 and 10 mL IN HC1 to adjust the
pH to 4. The aqueous phase was extracted with DCM (twice). The combined organic
extracts were washed with satd. NaHCOs (twice), brine, and dried (MgSCU).
Purification using a Biotage 40 M column (eluted hexane - EtOAc 3:2,1:1) afforded
the title compound (2.09 g, 80%) as a white foam.
'H NMR: (DMSO-de) 5 0.94 (s, 9H), 1.43-1.74 (m, 8H), 2.18-2.23 (m, 1H), 2.46-
2.49 (m, 1H), 3.64 (s, 3H), 3.87 (d, 7=12 Hz, 1H), 4.08-4.13 (m, 1H), 4.42 (dd, J=7.5,
9.5 Hz, 1H), 4.78 (m, 1H), 5.30 (m, 1H), 7.03-7.05 (m, 1H), 7.24 (s, 1H), 8.120 (d,
7=6 Hz, 1H).
LC/MS rt-min (MH+): 2.34 (526, 528)(method C).
Step 5:
To a solution of the product of Step 4 (206 mg, 0.391 mmol) in THF (2 mL) and methanol (2 mL) was added LiOH (28 mg, 1.2 mmol) in water (2 mL). The mixture was stirred for 2 h at room temperature and quenched with IN HC1 until neutral pH. The organic volatiles were removed in vacuo and to the residue was added buffer pH 4. The product was extracted into EtOAc (2 x 20 mL) and dried (MgSO4) to yield the title compound (196 mg, 100%) as a white solid. 'HNMR: (methanol-d4) 6 1.05 (s, 9H), 1.60-1.85 (m, 8H), 2.30-2.36 (m, 1H), 2.62-2.67 (m, 1H), 3.97 (d, 7=12 Hz, 1H), 4.26 (s, 1H), 4.32 (d, 7=12 Hz,lH), 4.58 (dd, 7=7.5, 9.5 Hz, 1H), 4.89 (m (hidden), 1H), 5.29 (m, 1H), 7.03-7.05 (m, 1H), 7.26 (s, 1H), 8.19 (d, 7=6 Hz, 1H); LC/MS rt-min (MH+): 2.17 (512, 514)(methodB).
Step 6:
This product was prepared according to Example 420, Step 4 (reaction time 20 h) in 20% yield starting from the product of Example 421, Step 5. 'HNMR: (methanol-dt) 5 1.03 (s, 9H), 1.45-1.74 (m, 8H), 2.31-2.37 (m, 1H), 2.65-2.69 (m, 1H), 3.99 (dd, 7=12, 3.0 Hz, 1H), 4.26 (d, 7=9.5 Hz, 1H), 4.33 (d, 7=11.5 Hz,lH), 4.60 (dd, 7=8.0,9.5 Hz, 1H), 4.80 (m, 1H), 5.35 (m, 1H), 6.72 (d, 7=9.0 Hz, NH), 7.02 (dd, 7=2.5, 6.0 Hz, 1H), 7.39 (s, 1H), 7.50 (m, 3H (hidden)), 7.91 (d, 7=6.5 Hz, 1H), 8.46 (d, 7=6.0 Hz, 1H).
Step 7:
Compound 421 was prepared according to Example 420, Step 6 in 68% yield, starting from the product of Example 421, Step 6.
'H NMR: (methanol-d4) 5 1.03 (s, 9H), 1.06-1.09 (m, 2H), 1.23-1.26 (m, 2H), 1.43 (dd, 7=5.5,9.5 Hz, IH), 1.47-1.77 (m, 8H), 1.88 (dd, 7=5.5, 8.5 Hz, IH), 2.21-2.29 (m, 2H), 2.50-2.54 (m, IH), 2.91-2.96 (m, IH), 4.06 (dd, 7=3.0, 11.5 Hz, IH), 4.28-4.30 (m, 2H), 4.44 (dd, 7=7.0,10.5 Hz, IH), 4.82 (m, IH (hidden)), 5.12 (d, 7=10 Hz, IH), 5.30 (d, 7=17 Hz, IH), 5.37 (m, IH), 5.73-5.80 (m, IH), 6.92 (d, 7=9.5 Hz, NH), 6.98 (dd, 7=5.5,2.0 Hz, IH), 7.37 (s, IH), 7.43-7.50 (m, 3H), 7.90 (d, 7=7.0 Hz, IH), 8.45 (d, 7=5.5 Hz, IH). LCMS rt-min (MH*): 2.37 (723)(method A).
C67
To a mixture of the product of Example 420, Step 3 (102 mg, 0.198 mmol) and Pd(PPh3)4 (23 mg, 0.0198 mmol) in toluene (2 mL) was added 4-tributylstannanyl-pyridine (87 mg, 0.24 mmol). The solution was heated at 105°C for 20 h under aHCO3 and extracted with EtOAc (2x10 mL), and dried (Na2SO4). Purification using a Biotage 12 M column (eluted gradient hexane-acetone 20-60%) afforded the title compound (49 mg, 49%) as a white solid.
'HNMR: (methanol-cU) 6 1.05 (s, 9H), 1.31 (s, 9H), 2.29-2.35 (m, IH), 2.68-2.72 (m, IH), 3.77 (s, 3H), 4.00 (d, 7=12 Hz, IH), 4.24 (d, 7=9.5 Hz, IH), 4.41 (d, J=12 Hz, IH), 4.67 (dd, 7=7.5,10 Hz, IH), 5.36 (m, IH), 6.51 (d, .7=9.5 Hz, NH), 7.79-7.85 (m, 3H), 8.39 (s, IH), 8.59 (s, IH), 8.67-8.68 (m, 2H). LC/MS rt-min (MH1): 1.77 (514)(method C).
Step 2:
This product was prepared by the same procedure as described in Example 420, Step 5 in quantitative yield, except using the product from Example 422, Step 1 instead. 'HNMR: (methanol-dO 8 1.05 (s, 9H), 1.32 (s, 9H), 2.32-2.38 (m, IH), 2.69-2.74 (m, IH), 3.99 (dd, 7=3,12 Hz, IH), 4.25 (s, IH), 4.40 (d, 7=12 Hz, IH), 4.64 (dd, 7=7.5, 9.5 Hz, IH), 5.36 (m, IH), 7.85-7.87 (m, 3H), 8.40 (s, IH), 8.60 (s, IH), 8.69-8.70 (m, 2H). LC/MS rt-min (MH*): 1.57 (500)(method B).
Step 3:
Compound 422 was prepared by the same procedure as described in Example 42O, Step 6 in 51% yield as a white solid, except using the product from Example 422, Step 2 instead.
'HNMR: (DMSO-de) 8 0.95 (s, 9H), 1.03 (m, IH), 1.08 (m, IH), 1.23 (s,9H), 1.34-1.37 (m, IH), 1.68-1.70 (m, IH), 2.12-2.18 (m, 2H), 2.41-2.45 (m, IH), 2.93 (m, IH), 3.90 (d, 7=11 Hz, IH), 4.06 (d, 7=9 Hz, IH), 4.17 (d, 7=11 Hz, IH), 4.36 (dd, 7=7, 10 Hz, IH), 5.10 (d, 7=12 Hz, IH), 5.23 (d, 7=16.5 Hz, IH), 5.40 (m, IH), 5.59-5.66 (m, IH), 6.60 (d, 7=9 Hz, NH), 7.81-7.82 (m, 3H), 8.38 (s, IH), 8.65 (s, IH), 8.68-8.70 (m, 2H), 8.93 (s, NH), 10.4 (s, NH). LC/MS rt-min (MH*): 2.14 (71 l)(method D).
To a solution of the product of Example 420, Step 3 (1.00 g, 1.94 mmol) in THF (5 mL) and methanol (5 mL) was added LiOH (140 mg, 5.83 mmol) in water (5 mL). The mixture was stirred for 2 h at room temperature and quenched with IN HC1 until neutral pH. The organic volatiles were removed in vacuo, buffer pH 4 was added and
the product was extracted into EtOAc (3 x 25 mL) and dried (MgSC^) to yield the
title compound (1.0 g, 100%) as a white solid.
'HNMR: (DMSO-de) 6 0.95 (s, 9H), 1.27 (s, 9H), 2.14-2.19 (m, 1H), 2.47-2.50 (m,
1H), 3.80 (d, .7=11.5 Hz, 1H), 3.99-4.07 (m, 2H), 4.15 (d, .7=11.5 Hz,lH), 4.36 (dd,
7=8,10 Hz, 1H), 5.25 (m, 1H), 6.66 (d, 7=9 Hz, NH), 7.75 (s, 1H), 8.28 (s, 1H), 8.31
(s, 1H), 12.5 (s, 1H).
LC/MS rt-min (MH+): 2.47 (500, 502)(method A).
Step 2:
Compound 423 was accomplished according to Example 420, Step 6 in 52% yield, starting from the products of Example 423, Step 1 and Example 8, Step 3 (racemic P,, (17?, 25) and (15, 2/?)).
'H NMR: (DMSO-de) 8 0.93,0.95 (s, 9H), 1.00-1.09 (m, 4H), 1.28, 1.29 (s, 9H), 1.37-1.39 (m, 1H), 1.69-1.72 (m, 1H), 2.09-2.22 (m, 2H), 2.36-2.46 (m, 1H), 2.88-2.94 (m, 1H), 3.82-3.87 (m, 1H), 4.02-4.04 (m, 1H), 4.10-4.15 (m, 1H), 4.31-4.34 (m, 1H), 5.10 (d, 7=10.5 Hz, 1H), 5.22-5.28 (m, 1H), 5.54-5.66 (m, 1H), 6.56, 6.60 (d, 7=9.5 Hz, NH), 7.74,7.76 (s, 1H), 8.28-8.29 (m, 1H), 8.32 (s, 1H), 8.79, 8.89 (s, 1H). LC/MS rt-min (MH*): 2.42 (712,714)(method B).
To a solution of the product of Example 423, Step 1 (91 mg, 0.18 mmol), Pd(PPh3)4 (10.5 mg, 0.0091 mmol), and 3-furyl boronic acid (25.4 mg, 0.227 mmol) in DMF (2 mL) was added 2M aqueous Na2CO3 (0.273 mL, 0.546 mmol). The mixture was heated at 110°C for 2.5 h under nitrogen. After cooling to room temperature the solid was removed by filtration, and the filtrate concentrated in vacuo. The residue was purified by preparative HPLC (gradient 30-80% B) to afford the title compound (64
]H NMR: (DMSO-de) 8 0.95 (s, 9H), 1.25 (s, 9H), 2.17-2.21 (m, IH), 2.50 (m (hidden), IH), 3.84-3.86 (m, IH), 4.09-4.15 (m, 2H), 4.37 (t, 7=9 Hz, IH), 5.28 (m, IH), 6.67 (d, 7=9 Hz, NH), 7.08 (s, IH), 7.62 (s, IH), 7.79 (s, IH), 8.17 (s, IH), 8.33 (s, IH), 8.51 (s, IH), 12.6 (s, IH). LC/MS rt-min (MH*): 1.60 (488)(method B).
Step 2:
C ompound 424 was prepared according to Example 420, Step 6 in 55% yield,
starting from the product of Example 424, Step 1.
'HNMR: (methanol-d4) 5 1.02 (s, 9H), 1.05-1.09 (m, 2H), 1.22-1.25 (m, 2H), 1.34
(s, 9H), 1.42-1.45 (m, IH), 1.86-1.89 (m, IH), 2.21-2.26 (m, IH), 2.48-2.52 (m, IH),
2.91-2.96 (m, IH), 4.02 (d, 7=12 Hz, IH), 4.24-4.29 (m, 2H), 4.43-4.47 (dd, 7=7.5,
10.5 Hz, IH), 5.12 (d, 7=10.5 Hz, IH), 5.28-5.32 (m, IH), 5.73-5.81 (m, IH), 6.63 (d,
7=9 Hz, NH), 6.90 (s, IH), 7.60-7.62 (m, 2H), 8.07 (s, IH), 8.12 (s, IH), 8.39 (s,
NH).
LC/MS rt-min (MH+): 2.30 (700)(method E).
Compound 425 was accomplished according to Example 421, Step 7 in 45% yield, starting from the product of Example 421, Step 5.
1HNMR: (DMSO-de) 8 0.95 (s, 9H), 1.03-1.04 (m, IH), 1.08-1.09 (m, IH), 1.33-1.36 (m, IH), 1.46-1.75 (m, 9H), 2.08-2.12 (m, IH), 2.17 (q, J=9 Hz, IH), 2.35-2.38 (m, IH), 2.88-2.93 (m, IH), 3.91 (d, J=9'.5 Hz, IH), 4.05-4.10 (m, 2H), 4.27 (dd, 7=10, 7 Hz, IH), 4.80 (m, IH), 5.10 (d, 7=12 Hz, IH), 5.23 (d, 7=16.5 Hz, IH), 5.32 (m, IH), 5.58-5.66 (m, IH), 6.94 (d, 7=9 Hz, NH), 7.03-7.05 (m, IH), 7.26 (s, IH), 8.21 (d, 7=6 Hz, IH), 8.86 (s, NH), 10.4 (s, NH). LC/MS rt-min (MH+): 2.56 (724, 726)(method D).
This product was prepared according to Example 421, Step 6 in 65% yield, except
using 3-furanoboronic acid.
'HNMR: (methanol-d,) 5 1.03 (s, 9H), 1.49-1.76 (m, 8H), 2.30-2.35 (m, 1H), 2.63-
2.67 (m, 1H), 3.98 (d, 7=12 Hz, 1H), 4.26 (t, J=9 Hz, 1H), 4.31 (d, 7=12 Hz,lH),
4.58 (t, 7=8.0 Hz, 1H), 5.32 (m, 1H), 6.71 (d, 7=9.5 Hz, NH), 6.92 (dd, 7=2.5,6.0 Hz,
1H), 6.98 (s, 1H), 7.25 (d, 7=2.5 Hz, 1H), 7.6U (s, 1H), 8.15 (s, 1H), 8.35 (d, 7=5.5
Hz, 1H).
LC/MS rt-min (MH*): 1.94 (500)(method D).
Step 2:
Compound 426 was prepared according to Example 421, Step 7 in 57% yield, starting from the product of Example 426, Step 1.
'HNMR: (DMSO-de) 5 0.95 (s, 9H), 1.03-1.04 (m, 2H), 1.08-1.09 (m, 2H), 1.34-1.71 (m, 8H), 2.09-2.20 (m, 2H), 2.37-2.41 (m, 1H), 2.93 (m, 1H), 3.96 (d, 7=9.5 Hz, 1H), 4.07-4.11 (m, 2H), 4.29 (m, 1H), 4.78 (m, 1H), 5.10 (d, 7=10.5 Hz, 1H), 5.23 (d, 7=17 Hz, 1H), 5.34 (m, 1H), 5.59-5.66 (m, 1H), 6.87-6.91 (m, 2H), 7.08 (s, 1H), 7.27 (s, 1H), 7.75 (s, 1H), 8.33 (s, 1H), 8.39 (d, 7=6 Hz, 1H), 8.90 (s, NH), 10.4 (s, 1H). LC/MS rt-min (MH*): 2.38 (712)(methodD).
Step 1:
This product was prepared according to Example 421, Step 6 in 86% yield, except using 4-fluorophenylboronic acid.
'HNMR: (methanol-d4) 8 1.03 (s, 9H), 1.44-1.75 (m, 8H), 2.30-2.36 (m, IH), 2.64-2.69 (m, IH), 3.99 (dd, 7=12, 3.5 Hz, IH), 4.26 (d, 7=9.5 Hz, IH), 4.32 (d, 7=12 Hz,lH), 4.59 (dd, 7=8.0, 9.5 Hz, IH), 4.81 (m, IH), 5.34 (m, IH), 6.73 (d, 7=9.5 Hz, NH), 6.99 (dd, 7=2.5, 6.0 Hz, IH), 7.20 (t, 2H (hidden)), 7.36 (s, IH (hidden)), 7.94-7.97 (m, 2H), 8.44 (d, 7=6.0 Hz, IH). LC/MS rt-min (MH+): 2.22 (528)(method A).
Step 2:
Compound 427 was prepared according to Example 421, Step 7 in 53% yield, starting from the product of Example 427, Step 1.
'H NMR: (methanol-d4) 6 1.03 (s, 9H), 1.06-1.09 (m, 2H), 1.23-1.26 (m, 2H), 1.43 (dd, 7=5.0, 9.5 Hz, IH), 1.47-1.78 (m, 8H), 1.88 (dd, 7=5.5, 8.0 Hz, IH), 2.21-2.29 (m, 2H), 2.49-2.53 (m, IH), 2.91-2.96 (m, IH), 4.05 (dd, 7=3.0, 11.5 Hz, IH), 4.27-
4.29 (m, 2H), 4.44 (dd, 7=7.0, 10.5 Hz, IH), 4.83 (m, IH (hidden)), 5.12 (d, 7=10 Hz, IH), 5.29 (d, 7=17 Hz, IH), 5.37 (m, IH), 5.73-5.80 (m, IH), 6.93 (d, 7=9.5 Hz, NH), 6.98 (m, IH), 7.21 (t, 7=9.0 Hz, 2H), 7.36 (s, IH), 7.94-7.97 (m, 2H), 8.44 (d, 7=6.0 Hz, IH). LC/MS rt-min (MH+): 2.42 (741)(method A).
This product was prepared according to Example 421, Step 6 in 37% yield, except using 4-methoxyphenylboronic acid.
'H NMR: (methanol-dO 5 1.03 (s, 9H), 1.45-1.74 (m, 8H), 2.31-2.36 (m, IH), 2.64-2.68 (m, IH), 3.85 (s, 3H), 3.98 (dd, 7=12, 3.5 Hz, IH), 4.25 (d, 7=9.0 Hz, IH), 4.33 (d, 7=11.5 Hz.lH), 4.59 (dd, 7=8.0,10 Hz, IH), 4.77 (m, IH), 5.36 (m, IH), 6.72 (d, 7=9.0 Hz, NH), 7.01 (m, IH), 7.04 (d, 7=9.0 Hz, 2H), 7.37 (d, 7=2:0 Hz), 7.86 (d, 7=9.0 Hz, 2H), 8.42 (d, 7=6.0 Hz, IH). LC/MS rt-min (MH+): 2.09 (540)(method A).
Step 2:
Compound 428 was prepared according to Example 420, Step 6 in 72% yield, starting from the product of Example 428, Step 1.
'HNMR: (methanol-d4) 8 1.03 (s, 9H), 1.06-1.09 (m, 2H), 1.23-1.25 (m, 2H), 1.43 (dd, 7=5.5, 9.5 Hz, IH), 1.48-1.77 (m, 8H), 1.88 (dd, 7=5.0, 8.0 Hz, IH), 2.21-2.28 (m, 2H), 2.50-2.54 (m, IH), 2.91-2.96 (m, IH), 3.85 (s, 3H), 4.05 (d, J= 12 Hz, IH), 4.27-4.29 (m, 2H), 4.44 (dd, 7=7.0,10.5 Hz, IH), 4.84 (m, IH (hidden)), 5.12 (d, 7=10 Hz, IH), 5.30 (d, 7=17 Hz, IH), 5.37 (m, IH), 5.72-5.80 (m, IH), 6.89 (d, 7=9.5 Hz, NH), 6.95 (dd, 7=2.5, 6.0 Hz, IH), 7.03 (d, 7=9.0 Hz, IH), 7.33 (d, 7=2.5 Hz, IH), 7.86 (d, 7=9.0 Hz, 2H), 8.41 (d, 7=6.0 Hz, IH). LC/MS rt-min (MH*): 2.40 (753)(method A).
Example 429: Preparation of Compound 429.
This product was prepared according to Example 421, Step 6 in 22% yield, except
using 2-thiopheneboronic acid.
'H NMR: (methanol-d4) 5 1.03 (s, 9H), 1.46-1.74 (m, 8H), 2.29-2.35 (m, 1H), 2.63-
2.67 (m, 1H), 3.97 (d, 7=12 Hz, 1H), 4.26 (d, 7=8.5 Hz, 1H), 4.31 (d, 7=12 Hz.lH),
4.60 (t, 7=8.5 Hz, 1H), 4.81 (m, 1H (hidden)), 5.31 (m, 1H), 6.87-6.89 (m, 2H), 7.13
(d, 7=5.0 Hz, 1H), 7.52 (s, 1H (hidden)), 7.70 (d, 7=2.5 Hz, 1H), 8.32 (d, 7=6.0 Hz,
1H).
LC/MS rt-min (MH+): 1.96 (516)(method A).
Step 2:
Compound 429 was prepared according to Example 420, Step 6 in 57% yield, starting from the product of Example 429, Step 1.
'HNMR: (methanol-d4) 5 1.02 (s, 9H), 1.07 (m, 2H), 1.24 (m, 2H), 1.43 (dd, 7=5.5, y.j rL6, in), i.jj-i./a (in, ori), i.oo \QQ, J=D.J, o.u ilZ, m;, z.zi-z.zo (rll, Zrij, 2.49-2.53 (m, 1H), 2.92-2.96 (m, 1H), 4.04 (d, 7= 10 Hz, 1H), 4.26-4.29 (m, 2H), 4.43 (t, 7=9.0 Hz, 1H), 4.82 (m, 1H (hidden)), 5.12 (d, 7=10.5 Hz, 1H), 5.29 (d, 7=17.5 Hz, 1H), 5.35 (m, 1H), 5.73-5.80 (m, 1H), 6.89 (d, 7=4.5 Hz, 1H), 6.92 (d, 7=4.5 Hz, NH), 7.13 (s, 1H), 7.35 (s, 1H), 7.51 (d, 7=4.5 Hz, 1H), 7.70 (s, 1H), 8.32 (d, 7=5.5 Hz, 1H). LC/MS rt-min (MH+): 2.37 (728)(method A).
Example 430: Preparation of Compound 430.
Step 1:
This product was prepared according to Example 421, Step 6 in 17% yield, except using 3-thiopheneboronic acid.
'H NMR: (methanol-d4) 8 1.03 (s, 9H), 1.43-1.74 (m, 8H), 2.30-2.36 (m, 1H), 2.64-2.68 (m, 1H), 3.98 (dd, 7=11.5,3.0 Hz, 1H), 4.25 (d, 7=9.0 Hz, 1H), 4.32 (d, 7=11.5 Hz,lH), 4.60 (dd, 7=8.0, 9.5 Hz, 1H), 4.80 (m, 1H (hidden)), 5.33 (m, 1H), 6.96 (dd, 7=2.5,6.0 Hz, 1H), 7.36 (s, 1H (hidden)), 7.51 (s, 1H (hidden)), 7.67 (d, 7=5.0 Hz, 1H), 8.03 (s, 1H), 8.39 (d, 7=6.0 Hz, 1H). LC/MS rt-min (NflT): 1.94 (516)(method A).
Step 2:
Compound 430 was prepared according to Example 420, Step 6 in 45% yield, starting from the product of Example 430, Step 1.
'H NMR: (methanol-dO 8 1.02 (s, 9H), 1.06 (m, 2H), 1.29 (m, 2H), 1.43 (dd, 7=5.5, 9.5 Hz, 1H), 1.43-1.75 (m, 8H), 1.87 (dd, 7=6.0,7.5 Hz, 1H), 2.20-2.27 (m, 2H), 2.49-2.53 (m, 1H), 2.93-2.95 (m, 1H), 4.05 (d, 7= 9.0 Hz, 1H), 4.27-4.29 (m, 2H), 4.42-4.45 (m, 1H), 4.85 (m, 1H (hidden)), 5.12 (d, 7=10.0 Hz, 1H), 5.29 (d, 7=17.5 Hz, 1H), 5.36 (m, 1H), 5.73-5.80 (m, 1H), 6.92-6.94 (m, 2H), 7.35 (s, 1H), 7.51 (s, 1H), 7.66 (d, 7=4.5 Hz, 1H), 8.00 (s, 1H), 8.38 (d, 7=5.5 Hz, 1H). LC/MS rt-min (MlT): 2.36 (728)(method A).
Example 431: Preparation of Compound 431.
To a mixture of the product of Example 421, Step 5 (100 mg, 0.195 mmol) and Pd(PPh3)4 (23 mg, 0.0195 mmol) in dioxane (3 mL) was added 2-tributylstannnylthiazole (95 mg, 0.254 mmol) and triethylamine (82 nL, 0.585 mmol). The solution was heated at 95°C for 5 h under nitrogen, then at 105°C for 15 h. After cooling to room temperature the mixture was filtered and concentrated. The residue was purified by preparative HPLC (gradient 30-80% B). The combined fractions were partitioned between buffer pH 4 and dichloromethane. The aqueous phase was extracted with dichloromethane and the combined organic extracts washed with brine and dried (MgSC>4). The title compound (31 mg) was obtained as a colorless oil, significantly contaminated with tributylstannyl residue. 'HNMR: (methanol-d4) 5 1.03 (s, 9H), 1.4 (m, 8H (hidden)), 2.32-2.36 (m, 1H), 2.64-2.68 (m, 1H), 4.00 (d, 7=11.5 Hz, 1H), 4.25 (s, 1H), 4.33 (d, 7=11.5 Hz,lH), 4.60 (t, 7=8.5 Hz, 1H), 4.80 (m, 1H (hidden)), 5.33 (m, 1H), 7.03 (br s, 1H), 7.70 (s, 1H), 7.73 (s, 1H), 7.93 (s, 1H), 8.41 (d, 7=5.5 Hz, 1H). LC/MS rt-min (MH+): 2.25 (517)(method A).
Step 2:
Compound 431 was prepared according to Example 420, Step 6 in 41% yield, starting from the product of Example 431, Step 1.
'HNMR: (methanol-d*) 5 1.02 (s, 9H), 1.06-1.70 (m, 13H), 1.86-1.89 (m, IH), 2.22-2.31 (m, 2H), 2.51-2.55 (m, IH), 2.92-2.94 (m, IH), 4.06 (d, J= 11.5 Hz, IH), 4.23-4.32 (m, 2H), 4.44-4.47 (m, IH), 4.82 (m, IH (hidden)), 5.12 (d, 7=1 1 Hz, IH), 5.30 (d, 7=17 Hz, IH), 5.36 (m, IH), 5.73-5.81 (m, IH), 6.90 (d, 7=9.0 Hz, NH), 7.04 (m, IH), 7.71 (m, 2H), 7.93 (s, IH), 8.42 (d, 7=5.5 Hz, IH). LC/MS rt-min (NOT): 2.46 (729)(method A).
To a mixture of the product of Example 423, Step 1 (102 mg, 0.204 mmol) and Pd(PPh3)4 (24 mg, 0.0204 mmol) in dioxane (3 mL) was added 2-tributylstannnylthiazole (99 mg, 0.265 mmol) and triethylamine (85 }iL, 0.612
mmol). The solution was heated at 95°C for 5 h under nitrogen, then at 105°C for 15 h. After cooling to room temperature the mixture was filtered and concentrated. The residue was purified by preparative HPLC (gradient 30-80% B). The combined fractions were neutralized with cone, ammonia and concentrated. The residue was partitioned between buffer pH 4 and dichloromethane. The aqueous phase was extracted with dichloromethane and the combined organic extracts washed with brine and dried (MgSO/O- The title compound (33 mg) was obtained as a colorless oil, significantly contaminated with tributylstannyl containing residue. 'H NMR: (methanol-d4) 5 1.03 (s, 9H), 1.30 (s, 9H), 2.28-2.32 (m, 1H), 2.62-2.67 (m, 1H), 3.98 (d, 7=11.5 Hz, 1H), 4.21 (s, 1H), 4.34 (d, 7=11.5 Hz,lH), 4.58 (t, 7=9.0 Hz, 1H), 5.31 (m, 1H), 7.71 (d, 7=2.5 Hz, 1H), 7.94-7.96 (m, 2H), 8.33 (s, 1H), 8.73 (s, 1H). LC/MS rt-min (MHVBoc): 2.21 (405)(method A).
Step 2:
Compound 432 was prepared according to Example 420, Step 6 in 42% yield, starting from the product of Example 432, Step 1.
'HNMR: (methanol-aU) 6 1.02 (s, 9H), 1.07-1.08 (m, 2H), 1.24 (m, 2H), 1.32 (s, 9H), 1.44 (m, 1H (hidden)), 1.86-1.89 (m, 1H), 2.21-2.29 (m, 2H), 2.51-2.55 (m, 1H), 2.93-2.95 (m, 1H), 4.04 (d, 7= 12 Hz, 1H), 4.23 (d, 7= 9.5 Hz, 1H), 4.33 (d, 7= 12 Hz, 1H), 4.47 (t, 7= 9.5 Hz, 1H), 5.12 (d, 7=10.0 Hz, 1H), 5.30 (d, 7=18 Hz, 1H), 5.36 (m, 1H), 5.72-5.81 (m, 1H), 6.62 (d, 7= 8.5 Hz, NH), 7.73 (s, 1H), 7.96 (m, 1H), 8.34 (s, 1H), 8.74 (s, 1H). LC/MS rt-min (MH+): 2.42 (717)(method A).
To a mixture of the product of Example 420, Step 3 (1.00 g, 1.94 mmol) and Pd(PPh3)4 (112 mg, 0.097 mmol) in dioxane (15 mL) was added tributyl(l-ethoxyvinyl)tin (876 mg, 2.43 mmol. The solution was heated at 105°C for 6 h under nitrogen. After cooling to room temperature the mixture was filtered and concentrated. The residue was partitioned between satd NaHCOa and ethyl acetate. The aqueous phase was extracted with ethyl acetate and the combined organic extracts washed with 5% aq. KF and brine and dried (MgSCU). Purification using a Biotage 40 M column (eluted gradient hexane - EtOAc 40-70%) afforded the title compound (624 mg, 64%) as a yellow oil.
'H NMR: (DMSO-de) 5 0.95 (s, 9H), 1.27 (s, 9H), 1.35 (t, 7=7.0 Hz, 3H), 2.16-2.21 (m, IH), 2.50 (m, IH (hidden)), 3.64 (s, 3H), 3.85 (d, 7= 11 Hz, IH), 3.90 (q, 7=7.0 Hz, 2H), 4.09 (d, 7= 9.0 Hz, IH), 4.13 (d, 7= 11 Hz, IH), 4.40 (d, 7=2.5 Hz, IH), 4.45 (t, 7=8.0 Hz, IH), 4.91 (d, 7=2.5 Hz, IH), 5.27 (m, IH), 6.69 (d, J- 9.0 Hz, NH), 7.48 (s, IH), 8.25 (s, IH), 8.46 (s, IH). LC/MS rt-min (MH*): 2.14 (507)(method B).
To a solution of the product of Example 433, Step 1 (125 mg, 0.247) in THF (3 mL) and water (111 yL, 6.18 mmol) was added NBS (44 mg, 0.247 mmol). After stirring at room temperature for 20 min. the mixture was concentrated and partitioned between ethyl acetate and brine. The organic phase was dried (MgSC>4) to give the intermediate bromomethyl ketone. This intermediate was dissolved in DMF and created wiin cnioacetarniue \z* mg, O.JZL mmoi; anci isanUUa (Ji mg, U.371 mmoij. The mixture was stirred for 2 h at room temperature, concentrated and suspended in satd. NaHCOa. The product was extracted with ethyl acetate (2x), washed with brine, and dried (MgS04.). Purification using a Biotage 12 M column (eluted gradient hexane - EtOAc 50-70%) afforded the title compound (50 mg, 38%) as a pale oil. 'HNMR: (methanol-oU) 5 1.02 (s, 9H), 1.31 (s, 9H), 2.27-2.31 (m, IH), 2.63-2.67 (m, IH), 2.77 (s, 3H), 3.74 (s, 3H), 3.98 (d, J= 10.0 Hz, IH), 4.22 (d, J= 9.5 Hz, IH), 4.34 (d, J= 10.5Hz, IH), 4.64 (t, 7=9.0 Hz, IH), 5.29 (m, IH), 6.38 (s, NH), 7.87 (s, IH), 7.91 (s, IH), 8.20 (s, IH), 8.71 (s, IH). LC/MS rt-min (MH+): 1.96 (533)(method B).
Step 3:
This product was prepared according to Example 420, Step 5, except using the
product of Example 433, Step 2 instead.
'H NMR: (DMSO-de) 6 0.96 (s, 9H), 1.25 (s, 9H), 2.18-2.23 (m, IH), 2.50 (m, IH
(hidden)), 2.73 (s, 3H), 3.86 (d, 7= 11.5 Hz, IH), 4.10 (d, J= 9.0 Hz, IH), 4.14 (d, 7=
1 l.SHz, IH), 4.39 (t, .7=8.5 Hz, IH), 5.30 (m, IH), 6.60 (br s, NH), 7.84 (s, IH), 8.14
(s, IH), 8.24 (s, IH), 8.78 (s, IH).
LC/MS rt-min (MH+): 1.84 (519)(method B).
Step 4:
Compound 433 was prepared, according to Example 420, Step 6 in 46% yield,
starting from the product of Example 433, Step 3.
'HNMR: (methanol-d4) 8 1.05 (s, 9H), 1.09-1.11 (m, 2H), 1.26-1.29 (m, 2H), 1.36 (s, 9H), 1.45-1.48 (m, IH), 1.89-1.92 (m, IH), 2.25-2.30 (m, 2H), 2.53-2.57 (m, IH), 2.80 (s, 3H), 2.94-3.00 (m, IH), 4.06 (d, 7= 10.5 Hz, IH), 4.27 (s, IH), 4.32 (d, 7= 12 Hz, IH), 4.48 (dd, 7= 10.5,7.0 Hz, IH), 5.15 (d, 7=10.5 Hz, IH), 5.33 (d, 7=17 Hz, IH), 5.35 (m, IH), 5.76-5.83 (m, IH), 7.93 (s, IH), 7.95 (m, IH), 8.22 (s, IH), 8.74 (s, IH). LC/MS rt-min (MH*): 2.21 (732)(method B).
Example 434: Preparation of Compound 434.
To a solution of the product of Example 421, Step 1 (300 mg, 1.56 mmol) and Pd(PPh3)4 (90 mg, 0.078 mmol) in DMF (6 mL) was added l-methyl-2-(tributylstannyl)-lH-pyrrole (750 mg, 2.03 mmol) and triethylamine (0.435 mL, 3.12 mmol). The solution was heated at 150°C for 30 min under nitrogen in a microwave oven (Emrys, Personal Chemistry). After cooling to room temperature the mixture was diluted with diethyl ether and 5% aq. KF and filtered. The aqueous phase was extracted with diethyl ether (2x). The combined organic extracts were washed with 5% aq. KF, water and brine and dried (MgSO4). Purification using a Biotage 25 S column (eluted gradient hexane - diethyl ether 0-5%) afforded the title compound (169 mg, 56%) as a colorless oil.
'HNMR: (DMSO-d6) 8 3.94 (s, 3H), 6.10 (s, 1H), 6.77 (d, 7=2.0 Hz, 1H), 6.93 (s, 1H), 7.27 (d, .7=4.0 Hz, 1H), 7.77 (s, 1H), 8.49 (d, 7=5.0 Hz, 1H), LC/MS rt-min (NOT): 1.15 (193,195)(methodB).
Step 2:This product was prepared according to Example 421, Step 2 in 39% yield, starting
from the product of Example 434, Step 1.
'H NMR: (methanol-d4) 5 1.42,1.43 (s, 9H (rotamers)), 2.27-2.34 (m, IH), 2.55-
2.62 (m, IH), 3.75 (m, 2H), 3.76,3.74 (s, 3H (rotamers)), 3.84 (s, 3H), 4.394.45 (m,
IH), 5.19 (m, IH), 6.10 (m, IH), 6.49 (m, IH), 6.78 (s, IH), 6.80-6.82 (m, IH), 7.07
(s, IH), 8.35 (d, 7=6.0 Hz, IH).
LC/MS rt-min (MH1", carboxylic acid): 1.49 (389)(method B).
Step 3:
The product of Example 434, Step 2 (90 mg, 0.22 mmol) was dissolved in dichloromethane (1.5 mL) and TFA (1.0 mL, 9.0 mmol).The solution was stirred at room temperature for 45 min., and concentrated. The residue was treated with IN HCI in diethyl ether (5 mL) and concentrated. The title compound was obtained in quantitative yield as a pale oil. LC/MS rt-min (MH*): 0.32 (302)(method B).
Step 4:
This product was prepared according to Example 420, Step 3 in 80% yield, starting from the product of Example 434, Step 3.
'HNMR: (methanol-d4) 8 1.02 (s, 9H), 1.31 (s, 9H), 2.25-2.31 (m, IH), 2.61-2.64 (m, IH), 3.73 (s, 3H), 3.84 (s, 3H), 3.97-3.99 (m, IH), 4.22 (d, /= 9.5 Hz, IH), 4.32 (d, J= 1 1.5 Hz, IH), 4.61 (t, 7=7.5 Hz, IH), 5.27 (m, IH), 6.10 (m, IH), 6.42 (br d,
LC/MS rt-min (MH): 1.81 (516)(method B).
Step 5:
To a solution of the product of Example 434, Step 4 (92 mg, 0.179 mmol) in THF (1 mL) and methanol (1 mL) was added LiOH (13 mg, 0.536 mmol) in water (1 mL). The mixture was stirred for 1.5 h at room temperature and quenched with IN HC1 until neutral pH. The organic volatiles were removed in vacuo, and the residue purified by preparative HPLC (gradient 10-80% B). The combined fractions were neutralized with cone, ammonia and concentrated. The residue was partitioned
between buffer pH 4 and ethyl acetate. The aqueous phase was extracted with ethyl acetate and the combined organic extracts washed with brine and dried (MgSO/O- The title compound (56 mg, 62%) was obtained as a white solid. 'H NMR: (methanol-cU) 6 1.03 (s, 9H), 1.32 (s, 9H), 2.31-2.35 (m, IH), 2.62-2.67 (m, IH), 3.85 (s, 3H), 3.98 (d,7= 11.5 Hz, IH), 4.21-4.23 (m, IH), 4.33 (d, J= 11.5 Hz, IH), 4.58 (t, 7=8.0 Hz, IH), 5.31 (m, IH), 6.12 (m, IH), 6.40 (br d, J= 8.0 Hz, NH), 6.52 (m, IH), 6.82 (m, IH), 6.87 (m, IH), 7.12 (s, IH), 8.36 (d, 7=5.5 Hz, IH). LC/MS rt-min (MH+): 1.73 (502)(method B).
Step 6:
Compound 434 was prepared according to Example 420, Step 6 in 68% yield, starting from the products of Example 434, Step 5.
'HNMR: (methanol-d4) 8 1.02 (s, 9H), 1.06-1.09 (m, 2H), 1.23-1.26 (m, 2H), 1.33 (s, 9H), 1.42-1.45 (m, IH), 1.86-1.89 (m, IH), 2.21-2.27 (m, 2H), 2.47-2.51 (m, IH), 2.91-2.96 (m, IH), 3.85 (s, 3H), 4.04 (d, 7= 12 Hz, IH), 4.24 (d, J= 10.0 Hz, IH), 4.28 (d, J= 12 Hz, IH), 4.43 (dd, J= 10.0, 7.0 Hz, IH), 5.12 (d, 7=10.0 Hz, IH), 5.30 (d, 7=17 Hz, IH), 5.32 (m, IH), 5.73-5.80 (m, IH), 6.10 (m, IH), 6.49 (m, IH), 6.64 (br d, 7= 9.0 Hz, NH), 6.79 (m, IH), 6.82 (m, IH), 7.08 (s, IH), 8.35 (d, 7=5.5 Hz, IH). LC/MS rt-min (MPT): 2.08 (714)(method B).
Example 435: Preparation of Compound 435.
This product was prepared according to Example 421, Step 2 in 74% yield, starting from 2,6-dibromopyridine
'HNMR: (DMSO-de) 6 1.34, 1.38 (s, 9H (rotamers)), 2.23-2.31 (m, IH), 2.43-2.47 (m, IH (hidden)), 3.53 (d, 7=12 Hz, IH), 3.66, 3.69 (s, 3H (rotamers)), 3.72-3.75 (m, IH), 4.29-4.34 (m, IH), 5.42 (m, IH), 6.89 (d, 7=7.5 Hz, IH), 7.26 (d, 7=7.5 Hz, IH), 7.68 (t, 7=7.5 Hz, IH).
This product was prepared according to Example 420, Step 2 in quantitative yield, starting from the product of Example 435, Step 1. LC/MS rt-min (MHT): 1.42 (301, 303)(method B).
Step 3:
This product was prepared according to Example 420, Step 3 in 96% yield, starting
from the product of Example 435, Step 2.
'HNMR: (DMSO-dft) 8 0.95 (s, 9H), 1.28 (s, 9H), 2.20-2.26 (m, IH), 2.45-2.48 (m,
IH), 3.64 (s, 3H), 3.94 (d, 7=9.5 Hz, IH), 4.01-4.08 (m, 2H), 4.45 (t, 7=8.5 Hz, IH),
5.53 (m, IH), 6.66 (d, 7=7.0 Hz, IH), 6.82 (d, 7=7.0 Hz, IH), 7.25 (d, 7=7.0Hz, IH),
7.64-7.69 (m, IH).
LC/MS rt-min (MH1"): 2.73 (514, 516)(method A).
Step 3:
This product was prepared according to Example 420, Step 5 in quantitative yield,
starting from the product of Example 435, Step 2.
'HNMR: (DMSO-d*) 8 0.95 (s, 9H), 1.28 (s, 9H), 2.19-2.25 (m, IH), 2.43-2.47 (m,
IH), 3.94 (m, IH), 4.01-4.08 (m, 2H), 4.36 (t, 7=8.5 Hz, IH), 5.52 (m, IH), 6.65 (d,
7=8.0 Hz, IH), 6.82 (d, 7=7.5 Hz, IH), 7.25 (d, 7=7.5 Hz, IH), 7.67 (t, 7=7.5 Hz,
IH), 12.6 (s, IH).
LC/MS rt-min (MNa+): 2.51 (522,524)(method B)..
Step 4:
To a solution of the product of Example 435, Step 3 (125 mg, 0.250 mmol), Pd(PPh3)4 (14.4 mg, 0.0125 mmol), and 3-furyl boronic acid (35 mg, 0.313 mmol) in DMF (2 mL) and water (0.025 mL) was added Cs2CO3 (244 mg, 0.750 mmol). The mixture was heated at 105°C for 3 h under nitrogen. After cooling to room temperature the solid was removed by filtration, and the filtrate concentrated in vacuo. The residue was purified by preparative HPLC (gradient 30-100% B). The combined tractions were neutralized with cone, ammonia and concentrated. The residue was partitioned between buffer pH 4 and dichloromethane. The aqueous phase was extracted with dichloromethane and the combined organic extracts washed with brine and dried (MgSO4). The title compound (90 mg, 76%) was obtained as a white foam.
'H NMR: (methanol-d4) 6 1.06 (s, 9H), 1.39 (s, 9H), 2.36-2.42 (m, IH), 2.61-2.65 (m, IH), 4.12 (dd, 7=4.0.11 Hz, IH), 4.19 (d, 7=11 Hz, IH), 4.28 (s, IH), 4.62 (t, 7=8.5 Hz, IH), 5.79 (m, IH), 6.64 (d, 7=8.0 Hz, IH), 6.96 (s, IH), 7.22 (d, 7=8.0 Hz, IH), 7.58 (m, IH), 7.66 (t, 7=8.0 Hz, IH), 8.13 (s, IH). LC/MS rt-min (MNa+): 2.53 (511)(methodB).
Step 5:
Compound 435 was prepared according to Example 420, Step 6 in 57% yield, starting from the product of Example 435, Step 4.
'H NMR: (DMSO-de) 5 0.96 (s, 9H), 1.02-1.05 (m, 2H), 1.09-1.11 (m, 2H), 1.19 (s, 9H), 1.35-1.38 (m, IH), 1.71 (dd, 7=5.5, 8.0 Hz, IH), 2.15-2.22 (m, 2H), 2.37-2.41 (m, IH), 2.93 (br m, IH), 4.03-4.08 (m, 3H), 4.35 (br t, IH), 5.10 (d, 7=10.5 Hz, IH), 5.24 (d, 7=17 Hz, IH), 5.60-5.67 (m, IH), 5.73 (m, IH), 6.47 (br s, IH), 6.64 (d,
7=7.5 Hz, IH), 7.04 (s, IH), 7.31 (d, 7=7.5 Hz, IH), 7.72 (t, 7=7.5 Hz, 1H),7.77 (s, IH), 8.32 (s, IH), 8.92 (s, NH), 10.4 (s, NH). LC/MS rt-min (MNa+): 2.64 (723)(method B).
Example 436: Preparation of Compound 436.
This product was prepared according to Example 435, Step 4 in 73% yield, except
using phenylboronic acid instead.
'HNMR: (methanol-d4) 8 1.06 (s, 9H), 1.39 (s, 9H), 2.39-2.45 (m, IH), 2.65-2.77
(m, IH), 4.18-4.30 (m, 3H), 4.64 (t, 7=8.0 Hz, IH), 5.72 (m, IH), 6.74 (d, 7=8.0 Hz,
IH), 7.44-7.55 (m, 4H), 7.75 (t, 7=8.0 Hz, IH), 8.07 (d, 7=7.5 Hz, 2H).
LC/MS rt-min (MNa+): 2.72 (521)(method B).
Step 2:
Compound 436 was prepared according to Example 420, Step 6 in 66% yield, starting from the product of Example 436, Step 1.
'H NMR: (DMSO-de) 5 0.96 (s, 9H), 1.04-1.05 (m, 2H), 1.09 (m, 2H), 1.30 (s, 9H), 1.36-1.39 (m, IH), 1.71 (t, 7=7.5 Hz, IH), 2.16-2.24 (m, 2H), 2.41-2.45 (m, IH), 2.93 (m, IH), 4.06-4.09 (m, 3H), 4.38 (br t, IH), 5.10 (d, 7=10.5 Hz, IH), 5.30 (d, 7=17 Hz, IH), 5.60-5.67 (m, IH), 5.80 (m, IH), 6.49 (br s, IH), 6.75 (d, 7=7.5 Hz, IH), 7.43-7.51 (m, 3H), 7.59 (d, 7=7.5 Hz, IH), 7.81 (t, 7=7.5 Hz, IH), 8.09 (d, 7=7.0 Hz, 2H), 8.91 (s, NH), 10.4 (s, NH). LC/MS rt-min (MH+): 2.77 (711)(method B).
Example 437: Preparation of Compound 437.
To a solution of 2-bromo-6-methyl-pyridine (7.65 g, 44.4 mmol) in dichloromethane (50 mL) was added a solution of/nCPBA (77%, 12.9 g, 57.7 mmol) in dichloromethane (100 mL). The solution was stirred for 18 h at ambient temperature. The mixture was neutralized with solid Na2C(>j and water was added. The aqueous phase was extracted with dichloromethane (2x). The combined organic fractions were washed with 5% Na2S2O3,5% Na2CC>3, brine and dried (MgSO4). Purification using a Biotage 40 M column (eluted gradient hexane - ethyl acetate 40-70%) afforded the title compound (5.0 g, 60%) as a colorless oil that solidified upon standing. 'H NMR: (DMSO-de) 6 2.43 (s, 3H), 7.15 (t, 7=8.0 Hz, IH), 7.50 (s, IH), 7.78 (s, IH).
To a solution of the product of Example 437, Step 1 (4.5 g, 24 mmol) in DMF (20 mL) was added POBrs (8.2 g, 29 mmol) in portions. A strong exothermic reaction occurred and a precipitate formed. The mixture was left for 2 h at ambient temperature. The mixture was quenched with water and satd. NaHCOs until neutral pH. The aqueous phase was extracted with diethyl ether (2x). The combined organic fractions were washed with brine and dried (MgSO4). Purification using a Biotage 40 M column (eluted gradient hexane - diethyl ether 0-10%) afforded the title compound (1.78 g, 30%) as a colorless oil. 'H NMR: (DMSO-dfi) 5 2.45 (s, 3H), 7.64 (s, IH), 7.80 (s, IH). LC/MS rt-min (NOT): 1.85 (250, 252, 254)(method B).
Step 3:
This product was prepared according to Example 421, Step 2 in 46% yield, starting
from the product of Example 437, Step 1.
'HNMR: (DMSO-dtO 5 1.34,1.38(s, 9H (retainers)), 2.20-2.27 (m, IH), 2.38 (s,
3H), 2.43-2.50 (m, IH), 3.55 (d, 7=12.5 Hz, IH), 3.64-3.67 (m, IH), 3.66,3.69 (s, 3H
(retainers)), 4.26-4.32 (m, IH), 5.17 (m, IH), 6.93 (s, IH), 7.08 (s, IH).
LC/MS rt-min (MH*): 2.17 (415,417)(method B).
This product was prepared according to Example 420, Step 3 in quantitative yield, starting from the product of Example 437, Step 3.
Step 4:
This product was prepared according to Example 420, Step 3 in 75% yield, starting
from the product of Example 437, Step 3.
'H NMR: (DMSO-de) S 0.94 (s, 9H), 1.27 (s, 9H), 2.16-2.21 (m, IH), 2.36 (s, 3H),
2.48 (m, IH (hidden)), 3.64 (s, 3H), 3.83 (d, 7=10.5 Hz, IH), 4.06 (d, 7=8.5 Hz, IH),
4.14 (d, 7=10.5 Hz, IH), 4.42 (t, 7=9.0 Hz, IH), 5.27 (m, IH), 6.68 (br s, NH), 6.88
(s, IH), 7.03 (s, IH).
LC/MS rt-min (MH4): 2.19 (528, 530)(method B).
This product was prepared according to Example 420, Step 5 in quantitative yield,
starting from the product of Example 437, Step 4.
'H NMR: (DMSO-de) 6 0.95 (s, 9H), 1.27 (s, 9H), 2.15-2.19 (m, IH), 2.36 (s, 3H),
2.44-2.48 (m, IH), 3.81 (d, 7=10.5 Hz, IH), 4.04-4.06 (m, IH), 4.13 (d, 7=10.5 Hz,
IH), 4.33 (t, 7=8.5 Hz, IH), 5.26 (m, IH), 6.66 (br d, 7=9.0 Hz, NH), 6.88 (s, IH),
7.03 (s, IH).
LC/MS rt-min (MNa+): 2.14 (536, 538)(method B).
Step 6:
To a solution of the product of Example 437, Step 5 (101 mg, 0.196 mmol), Pd(PPh3)4 (11.3 mg, 0.0098 mmol), and phenyl boronic acid (34 mg, 0.275 mmol) in DMF (2 mL) was added 2M aqueous Na2CO3 (0.294 mL, 0.588 mmol). The tube was sealed and heated in a microwave oven (Emrys, Personal Chemistry) at 150°C for 15 min. under nitrogen. After cooling to room temperature the mixture was acidified with IN HC1 (0.5 mL). The solid was removed by filtration, and the filtrate concentrated in vacuo. The residue was purified by preparative HPLC (gradient 20-80% B). The combined fractions were neutralized with cone, ammonia and
concentrated. The residue was partitioned between buffer pH 4 and ethyl acetate. The
aqueous phase was extracted with ethyl acetate (2x) and the combined organic
extracts washed with brine and dried (MgSO/O. The title compound (115 mg, >100%)
was obtained as a white solid.
'H NMR: (methanol-d4) 5 1.06 (s, 9H), 1.30 (s, 9H), 2.36-2.41 (m, IH), 2.69 (s,
3H), 2.65-2.76 (m, IH), 4.01 (dd, 7=3.0,12 Hz, IH), 4.21 (s, IH), 4.44 (d, 7=12 Hz,
IH), 4.64 (dd, 7=8.0,10 Hz, IH), 5.46 (m, IH), 6.91 (s, IH), 7.29 (s, IH), 7.39 (m,
3H), 7.57 (d, 7=7.5 Hz, 2H).
LC/MS rt-min (MET): 1.84 (513)(method B).
Step 7:
Compound 437 was prepared according to Example 420, Step 6 in 31% yield, starting from the product of Example 437, Step 6.
-
IH), 1.69-1.71 (m, IH), 2.11-2.20 (m, 2H), 2.39-2.43 (m, IH), 2.48 (s, 3H), 2.93 (m, IH), 3.92 (d, 7=8.5 Hz, IH), 4.07 (d, 7=9.0 Hz, IH), 4.11 (d, 7=12 Hz, IH), 4.32 (t, 7=7.0 Hz, IH), 5.10 (d, 7=10.5 Hz, IH), 5.23 (d, 7=17.5 Hz, IH), 5.39 (m, IH), 5.60-5.67 (m, IH), 6.58 (d, 7=8.5 Hz, IH), 6.83 (s, IH), 7.27 (s, IH), 7.40-7.48 (m, 3H), 8.04-8.06 (m, 2H), 8.92 (s, NH), 10.4 (s, NH). LC/MS rt-min (MH+): 2.10 (725)(method B).
This product was prepared according to Example 437, Step 6 in quantitative yield,
starting from 2-thiopheneboronic acid.
!H NMR: (methanol-d4) 8 1.05 (s, 9H), 1.32 (s, 9H), 2.32-2.38 (m, IH), 2.56 (s,
3H), 2.66-2.70 (m, IH), 3.99 (dd, 7=3.0,12 Hz, IH), 4.23 (s, IH), 4.36 (d,;=12 Hz,
IH), 4.61 (t, 7=8.5 Hz, IH), 5.35 (m, IH), 5.86 (s, IH), 7.16-7.18 (m, IH), 7.21 (s,
IH), 7.56 (m, IH), 7.72 (d, 7=3.0 Hz, IH).
LC/MS rt-min (MH+): 1.80 (519)(method B).
Step 2:
Compound 438 was prepared according to Example 420, Step 6 in 41% yield, starting from the product of Example 438, Step 1.
'H NMR: (DMSO-dfi) 6 0.91 (s, 9H), 0.99-1.04 (m, 4H), 1.20 (s, 9H), 1.35-1.37 (m, IH), 1.69-1.71 (m, IH), 2.09-2.20 (m, 2H), 2.33 (m, IH), 2,42 (s, 3H), 2.93 (m, IH), 3.92 (d, 7=8.5 Hz, IH), 4.07-4.11 (m, 2H), 4.29-4.32 (m, IH), 5.10 (d, 7=10.5 Hz, IH), 5.23 (d, 7=17.0 Hz, IH), 5.36 (m, IH), 5.60-5.67 (m, IH), 6.58 (d, 7=8.5 Hz, IH), 6.75 (s, IH), 7.14 (t, 7=4.5 Hz, IH), 7.28 (s, IH), 7.59 (d, 7=5.5 Hz, IH), 7.80 (d, 7=3.5 Hz, IH), 8.92 (s, NH), 10.4 (s, NH). LC/MS rt-min (MH+): 2.06 (731)(method B).
Section K:
Example 450: Preparation of Compound 450.
Compound 450 was prepared according to Example 8, Step 5, except using 4-chloro-6-fluoro-2-trifluoromethylquinoline instead.
'HNMR (CD3OD) 6 0.97-1.04 (m, 12H), 1.17-1.24 (m, 10H), 1.39-1.46 (m, IH), 1.82-1.87 (m, IH), 2.20-2.23 (m, IH), 2.35-2.39 9m, IH), 2.55-2.65 (m, IH), 2.91-2.96 (m, IH), 4.09-4.11 (m, IH), 4.18-4.21 (m, IH), 4.56 (b, 2H), 5.10-5.14 (m, IH),
Example 451: Preparation of Compound 451.
The tosylate was prepared as described in the literature (Patchett, A. A.; Witkof, B. J. Am. Chem. Soc. 1957, 185-192) and was used without further purification.
To a slurry of NaH (76 mg, 1.90 mmol) in DMF (20 ml) was added 1-thionaphthol (0.29 mg, 1.80 mmol) and the mixture stirred for 30 minutes. A solution of the tosylate (0.61 g, 1.80 mmol) was added and the mixture stirred for 12 h at 23°C. The mixture was concentrated and the residue partitioned between EtOAc/H20. The organic extracts are dried (MgSO4) and concentrated. The residue was purified by column chromatography (elution with 5% EtOAc/hexanes to 30% EtOAc/hexanes to give 261 mg (38%) of the product as a yellow oil.
'H NMR (CDC13,3:2 mixture of rotamers) 8 1.41 (s, 9H), 1.44 (s, 9H), 2.25-2.29 (m, 2H), 3.69 (s, 3H), 3.35-3.42 (m, IH), 3.51-3.53 (m, IH), 3.80-3.86 (m, 2H), 4.38-4.39 (m, IH), 4.46-4.48 (m, IH), 7.41-7.46 (m, IH), 7.42-7-54 (m, IH), 7.57-7.59 (m, IH), 7.58 (d, J = 4 Hz, IH), 7.82-7.88 (m, 2H), 8.46 (d, J = 5Hz, IH); LC-MS (retention time: 1.93), MS m/z 388 (MM).
Step 2:
A mixture of 4-(naphthalen-l-ylsulfanyl)-pyrrolidine-l,2-dicarboxylic acid 1-tert-butyl ester 2-methyl ester (0.38 g, 0.98 mmol) and 4N HC1 (1.0 ml) was stirred at 23°C for 2 h. The solvent was removed and the residue dissolved in CHaCN (20 ml) and treated with acid (0.37 g, 2.16 mmol), TBTU (0.23 g, 0.98 mmol) and DIPEA (0.37 g, 2.16 mmol) and stirred for 12 h. The mixture is concentrated and the residue dissolved in EtOAc and washed with 1 N HC1, saturated NaHCOs then dried over
IH NMR (CDCI3,1:1 mixture of rotamers) 6 0.99 (s, 9H), 1.02 (s, 9H), 1.44 (s, 9H), 1.46 (s, 9H)2.2-2.25(m, 2H), 3.70 (s, 3H), 3.82-3.86 (m, IH), 3.89-3.92 (m, 2H)4.26 (s, IH), 4.28 (s, IH), 4.70-4.75 (m, lH),7.40-7.48 (m, IH), 7.54-7.55 (m, IH), 7.59-7.62 (m, IH), 7.72-7.74 (m, IH), 7.86-7.89 (m, 2H), 8.48-8.50 (m, IH); LC-MS (retention time: 1.59), MS m/z 523 (M+Na).
Step 3:
To a mixture of l-(2-tert-butoxycarbonylamino-3,3-dimethyl-butyryl)-4-(naphthalen-l-ylsulfanyl)-pyrro!idine-2-carboxylic acid methyl ester (Example 451, Step 2) (0.49 g, 0.98 mmol), in THF/H2O (2:1) was added LiOH hydrate (0.20 g, 4.9 mmol) and the mixture stirred for 12 h. The solution was concentrated and washed with EtOAc. The aqueous layer is acidified with IN HC1 and extracted with EtOAc. The product was observed in the first EtOAc extract. The first organic extract was dried over MgS04 and concentrated to 328 mg (71%) of a tan solid. 'H NMR (DMSO-ds, 2:1 mixture of rotamers) 6 0.88 (s, 9H), 0.92 (s, 9H), 1.34 (s, 9H), 1.38 (s, 9H), 2.18-2.25(m, 2H), 3.66-3.75 (m, IH), 3.89-4.00 (m, 2H), 4.10-4.13 (m, IH), 4.25-4.32 (m, IH), 7.45-7.7.51 (m, IH), 7.56-7.61 (m, 2H), 7.65-7.7.69 (m,lH), 7.88-7.91 (m, IH), 7.97 (d, J = 4.8 Hz, IH), 8.27-8.35 (m, IH);
(retention time: 1.52), MS m/z 486 (M+l).
Step 4:
To a solution of the acid (Example 451, Step 3) (0.32 g, 0.87 mmol) in CH3CN (10 mL) and DMF (2 mL) was added the diastereomeric mixture of 1(R)-2(S) and 1-(S)-2(R) l-amino-2-vinyl-cyclopropanecarboxylic acid ethyl ester hydrochloride (240 mg, 0.87 mmol) and TBTU (201 mg, 0.87 mmol) andDIPEA (0.32 mL, 0.742 mmol) and the mixture stirred at 23°C for 12 h. The mixture was concentrated and the residue partitioned between EtOAc and water. The organic layer was separated, dried over MgS(>4 and concentrated. The residue was chromatographed with 30% EtOAc/hexanes as eluant to give 240 mg (38%) of a light yellow solid.
'H NMR (DMSO-dfi, mixture of rotamers and diasteromers) 8 0.87 (s, 9H), 0.88 (s, 9H), 0.97-1.04 (m, 3H), 1.33 (s, 9H), 1.38(s, 9H), 2.11-2.20 (m, 2H), 3.74-3.85 (m, IH), 3.89-3.96 (m, 2H), 3.98-4.03 (m, 4H), 4.00-4.09 (m, IH), 4.40-4.42 (m, IH), 5.04-5.09 (m, IH), 5.17-5.29 (m, 2H), 5.50-5.70 (m, IH), 6.60-6.62 (m, IH), 6.72-6.75 (m, IH), 7.50-7.56 (m, IH), 7.56-7.72 (m, 2H), 7.70-7.80 (m, IH), 7.92-8.00 (m, IH), 8.00-8.06 (m, IH), 8.29-8.40 (m, IH), 8.65 (s, IH), 8.79 (s, IH); LC-MS (retention time: 1.59), MS m/z 623 (M+l).
Step 5:
The acid was prepared as previously described using LiOH in THF/MeOH/H2O (4/2/1) in Example 451, Step 3, except using the product of Example 451, Step 4 instead.
'H NMR (DMSO-de, mixture of rotamers and diastereomers) 8 0.90 (s, 9H), 1.17-1.23 (m, 2H), 1.32-1.37 (m, 9H), 2.10-2.12 (m, IH), 2.20-2.31 (m, 2H), 3.974.05 (m, 2H), 4.10-4.12 (m, IH), 4.32-4.40 (m, IH), 4.55-4.61 (m, IH), 4.80-4.98 (m, 2H), 5.03-5.08 (m, IH), 5.10-5.20 (m, IH), 5.75-5.90 (m, IH), 6.55-6.70 (m, IH), 7.42-7.57 (m, IH), 7.60-7.64 (m, 2H), 7.70-7.72 (m, IH), 7.80-7.97 (m, IH), 7.96-7.99 (m, IH), 8.20-8.50 (m, 2H); LC-MS (retention time: 1.52), MS m/z 595 (M+l).
A mixture of the acid (Example 451, Step 5) (172 mg, 0.29 mmol), methanesulfonamide (110 mg, 1.16 mmol), EDAC (110 mg, 0.58 mmol) and DMAP (71 mg, 0.58 mmol)was dissolved in THF (10 ml) and stirred for 12 h. DBU (0.087 mL, 0.58 mmol) was added and the mixture stirred for 48 h. The solvent is removed and the residue dissolved in EtOAc and washed with water and IN HC1, dried over MgSO4 and concentrated. The residue was purified by preparative thin layer chromatography to give 15 mg (8%) of Compound 451 as a tan solid. 'H NMR (DMSO-d6, mixture of rotamers and diastereomers) 5 0.98 (s, 9H), 1.27-1.42 (m, 2H), 1.46 (s, 9H), 1.76-1.79(m, IH), 1.83-1.86 (m, IH), 1.92-2.10 (m, IH), 2.16-2.25 (m, 2H), 3.01-3.10 (m, IH), 3.80-3.83 (m, IH), 3.86-3.89 (m, IH), 3.98-3.99 (m, IH), 3.99-4.05 (m, IH), 4.24-4-29 (m, IH), 4.44-4.53 (m, IH), 4.86 (s, 3H), 5.08-5.15 (m, IH), 5.25-5.29 (m, IH), 5.65-5.85 (m, IH), 6.5-6.8 (m, IH), 7.48 (t, J =
in.;, i.j*r (i, j — i.i ru., in;, i.jy ^t, j = /.i nz, i.n;, /. /_>-/. / / v.m, in.), 7.88-7.91 (m, 2H), 8.46 (d, J = 8.25 Hz, IH); LC-MS (retention time: 1.52), MS m/z 672 (M+l minor), m/z 693 (M+Na Major).
Example 452: Preparation of Compound 452
To a slurry of NaH (76 mg, 1.90 mmol) in DMF (20 mL) is added 2-thionaphthol (0.29 g, 1.80 mmol) and the mixture is stirred for 30 minutes. A solution of the tosylate (Example 451, Step 1) (0.61 g, 1.79 mmol) in DMF (2 ml) is added and the mixture stirred for 12 h ar 23°C. The mixture is concentrated then partitioned between EtOAc/fkO. The organic layer was washed with saturated NaHCOS, dried (MgSO4) and concentrated. The residue was chromatographed with 5% EtOAc/hexanes followed by 30% EtOAc/hexanes to give 261 mg (38%) of the product as a clear oil.
'H NMR (DMSO-de) 8 1.32 (s, 9H), 2.29-2.35 (m, 2H), 3.33-3.47 (m, 2H), 3.66 (s, 3H), 3.71-3.81 (m, 1H), 4.29-4.32 (s, 1H), 7.49-7.55 (m, 3H), 7.70-7.80 (m,lH), 7.81-7.97 (m, 3H); LC-MS (retention time: 1.54), MS m/z 387 (M+l).
A mixture of 4-(naphthalen-2-ylsulfanyl)-pyrrolidine-l,2-dicarboxyIic acid 1-tert-butyl ester 2-methyl ester (310 mg, 0.80 mmol) and 4N HC1 in dioxane (1.49 ml, 2.69 mmol) was stirred for 2 h at 23oC then concentrated. The residue is dissolved in CH3CN (10 mL) and N-Boc-t-butylglycine (196 mg, 0.85 mmol), TBTU (0.27 g,
0.85 mmol) and DIPEA (0.32 mL, 1.85 mmol) were added and the mixture stirred overnight. The mixture was concentrated and the residue dissolved in EtOAc, washed with 1 N HC1, saturated NaHC03, dried and concentrated to give 300 mg (90%)of the product as a yellow oil.
'H NMR (Methanol-d4) 8 0.99 (s, 9H), 1.44 (s, 9H), 2.20-2.35 (m, 2H), 3.75 (s, 3H), 3.92-4.08 (m, 2H), 4.26 (d, J = 9.4 Hz, 1H), 4.57 (t, J = 9.5 Hz, 1H)6.46 (d, J = 9.5 Hz, 1H), 7.48-7.60 (m, 3H), 7.83-7.90 (m, 3H), 8.02 (s, 1H) LC-MS (retention time: 1.98), MS m/z 523 (M+Na).
Step 3:
A solution of 4-(naphthalen-2-ylsulfanyl)-pyrrolidine-l,2-dicarboxylic acid 1-tert-butyl ester 2-methyl ester (0.48 g, 0.96 mmol) is dissolved in MeOH (20 mL) and stirred with LiOH (0.2 g, 4.8 mmol) for 12 h. the solution is concentrated and acidified and extracted with EtOAc. The organic extract was dried over-MgSO* and concentrated to give 418 mg (91%) of a yellow solid.
'H NMR (DMSO-dc, 1:2 mixture of rotamers) 6 0.86,0.93 (s, 9H) (1:2 mixture of rotamers), 1.35, 1.38 (s, 9H) (1:2 mixture of rotamers), 2.01-2.18, 2.25-2.35 (m, 2H), 3.25-3.40 (m, 2H), 3.70-3.80 (m, 1H), 4.00-4.20 (m, J = 9.4 Hz, 2H), 4.30-4.40 (s, 1H), 5.61-5.70,6.42-6.50 (m, 1H) (1:2 mixture of rotamers), 7.50-7.54 (m, 3H), 7.87-7.89 (m, 3H), 7.98 (s, 1H); LC-MS (retention time: 1.93), MS m/z 487 (M+l).
A solution of l-tert-butoxycarbonylamino-2-vinyl-cyclopropanecarboxylic acid ethyl ester (4.3 g, 17.8 mmol) in MeOH (50 mL) was treated with LiOH (0.84 g, 20.0 mmol) and water (5 mL) and the mixture stirred for 12 h. The solvent was removed and the residue acidified and extracted with EtOAc. The organic layers are dried over MgSC>4, filtered and concentrated to give the acid 2.1 g (52%) as a yellow oil. The acid (2.1 g, 9.25 mmol) was dissolved in THF and treated with GDI (7.25 g, 13.8 mmol) and heated to reflux for 3 h then cooled to 23°C. Methanesulfonamide (1.76 g, 18.5 mmol) was added followed by DBU (2.77 ml, 18.5 mmol) and stirred for 72 h at 23°C. The mixture was concentrated and the residue acidified to pH 4 (1N HC1) and extracted with EtOAc. The organic extracts were dried over MgSCU and concentrated to give 1.99g (71%) of a yellow oil that solidified on standing. 'H NMR (DMSO-dg) S 1.16-1.23 (m.lH), 1.43 (s, 9H), 1.65-1.75 (m, 1H), 2.15-2.25 (m, 2H), 3.16 (s, 3H), 5.08 (d, J = 9.9 Hz, 1H), 5.22 (d, J = 17.1 Hz, 1H), 5.40-5.52 (m, 1H); LC-MS (retention time: 1.14), MS m/z 304 (M+l).
Step 5:
A solution of the product of Example 452, Step 4 in dioxane/4N HC1 (2 ml)was
stirred for 2 h then concentrated. The residue was dissolved in CHaCN (5 mL) and
added to a mixture of the acid (Example 452, Step 3) (120 mg, 0.25 mmol), TBTU
(58 mg, 0.25 mmol) and DIPEA (0.06 ml, 0.35 mmol) was added and the mixture
stirred for 12 h. The solvent was removed and the residue dissolved in EtOAc and
washed with IN HC1, saturated NaHCO3 dried over MgSO4 and concentrated. The
residue is purified with preparative TLC (Analtech 20X40 cM, 1000D Si02) to give
128 mg (70%) of Compound 452 as a tan solid.
'H NMR (DMSO-de, mixture of diasteromers) 8 0.97,0.99 (s, 9H), 1.23-1.43 (m,
2H), 1.45 (s, 9 H), 1.82-1.83 (m, 1H), 2.00-2.51 (m, 2H), 2.90-2.99 (m, 1H), 3.33 (s,
3H), 3.90-3.99 (m, IH), 4.01-4.20 (m, 2H), 4.25-4.30 (m, IH), 4.45-4.55 (m, IH), 4.95-5.10 (m, IH), 5.12-5.25 (m, IH), 5.71-5.85 (m, IH), 6.4-6.8 (br m, IH), 7.46-7.53 (m, 3H), 7.80-7.86 (m, 3H), 7.98-7.99 (m, IH); LC-MS (retention time: 1.95), MS m/z 672 (M+l).
A mixture of Example 452, Step 3 (110 mg, 0.23 mmol) in DCM (20 ml), 3-chloroperbenzoic acid (121.6 mg, 0.57 mmol, 85% peracid), KHPO4 (0.13g, 0.94 mmol) and K2HPO4 (0.18g, 1.05 mmol) are stirred at 23°C for 12 h. The solution is diluted with DCM, washed with water, saturated NaHCO3, dried over MgSCU and concetrated to give the product 110 mg, (92%) as a clear oil. 'H NMR (DMSO-cU) 8 0.91 (s, 9H), 1.48 (s, 9H), 2.23-2.28 (m, IH), 2.65-2.80 (m, IH), 3.88-3.90 (m, IH), 4.12 (t, J = 8.0 Hz, IH), 4.20 (d, J = 9.5 Hz, IH), 4.27 (d, J = 9.9 Hz, IH), 6.76 (d, J = 9.3 Hz, IH), 7.70-7.80 (m, 2H), 7.88-7.95 (m, IH), 8.11 (d, J = 8.1 Hz, IH), 8.17 (d, J = 8.6 Hz, IH), 8.26 (d, J = 8.1 Hz, IH), 8.71 (s, IH);
Step 2:
A mixture of the product of Example 453, Step 1 (110 mg, 0.212 mmol), amine (Example 452, Step 5a) (0.65 mg, 0.212 mmol), TBTU (48.5 mg, 0.21 mmol) followed by DJPEA (60.8 ml, 0.35 mmol) and stirred for 12 h at 23°C. The solvent is removed and the residue dissolved in EtOAc and washed with IN HC1, aturated NaHCO3, dried over MgSO4 and concentrated. The residue was purified by preparative TLC (eluted with 10% MeOH/CH2Cl2) to give 25 mg (17%) of Compound 453 as a white solid.
1H NMR (DMSO-d6, mixture of diastereomers) 5 0.93,0.96 (s,9H), 1.38-1.45 (m, 2H), 1.53,1.55 (m, 9H), 1.76-1.85 (m, IH), 2.21-2.40 (m, 2H), 3.13-3.15 (m, 2H), 3.34 (s, 3H), 3.91-3.99 (m, IH), 4.15 (m, IH), 4.25 (m, IH), 4.30 (m, IH), 5.09-5.12 (m, IH), 5.26-5.31 (m, IH), 5.72-5.76 (m, IH), 6.65-6.68 (m, IH), 6.71-6.76 (m, IH), 7.67-7.76 (m, 2H), 7.91-7.95 (m, IH), 8.03 (d, J = 7.8 Hz, IH), 8.13 (d, J = 8.5 Hz, IH), 8.20 (d, J = 7.6 Hz, IH), 8.7 (s, IH); LC-MS (retention time: 1.76), MS m/z 705 (M+l).
Example 454: Preparation of Compound 454.
To slurry of the sodium hydride (0.91 g, 22.7 mmol) in THF( 50 mL) was added N-BOC-trans-4(R)-hydroxy-L-proline (2.5 g, 10.8 mmol) and the mixture stirred at 23°C for 1 h. 2-Chloromethylnapthalene (1.9 g, 10.8 mmol) was added and the mixture stirred for 12 h at room temperature. The solvent was removed and the residue poured into water and washed with hexanes. The aqueous layer was acidified (1 N HC1) and extracted with EtOAc. The EtOAc layer is separated, dried (MgSO4), and concentrated to give a light yellow residue. The oil was purified by flash chromatography with 1:1 EtOAc/hexanes with 1% acetic acid added to give 1.56 g (jy-/o) or me aesirea proauci as a MUCK on.
'H NMR (DMSO-de, 3:1 mixture of rotamers) 6 1.35, 1.37 (s, 9H, major and minor respectively), 1.92-2.02,2.15-2.20 (m, 2H, major and minor respectively), 2.35-2.50 (m, 2H), 3.41-3.49 (m, 2H), 4.12-4.16,4.20-4.21 (m, 2H), 4.65-4.68(m, 2H), 7.46-7.52 (m, 3H), 7.74-7.91 (m, 4H), (Acid OH not observed); LC-MS (retention time: 1.44, YMC ODS-A C18 S7 3.0x 50 mm, gradient !0%MeOH/H2O 0.1%TFA to 90% MeOH/H2O 0.1% TFA), MS m/z 394
To a solution of the HC1 salt of a 1:1 mixture of diastereoisomers (1R,2S/1S,2R where carboxy group is syn to vinyl moiety) of 2-(l-ethoxycarbonyl-2-vinyl -cyc]opropyIcarbamoyI)-4-(naphthalen-2ylmethoxy)-pyrrolidine-l-carboxylic acid
tert-butyl ester (0.54 g, 1.3 mmole)[prepared by stirring the N-Boc arnine with HC1 (4N) in dioxane for 1 hr then removal of the solvent in vacuo] in CHaCN (50 mL) is added Boc-4(R)-(2-methylnapthyl)proline (0.5 g, 1.3 mmol), TBTU (0.45 g, 1.4 mmol) followed by DIPEA (0.78 mL, 4.5 mmol). The mixture is stirred for 12 h and concentrated. The residue was dissolved in EtOAc/HjO and washed with saturated NaHCO3, saturated NaCl, dried (MgSO4) and concentrated to give a thick yellow oil (0.6 g, 91%) of the product as a mixture of diastereomers.
'H NMR (DMSO-de) 6: 1.08-1.22 (m, 7 H), 1.23-1.39 (m, 9 H), 2.02-2.18 (m, IH), 2.25-2.35 (m, IH), 3.33-3.53 (m, 2H), 3.90-4.14 (m, 4H), 4.45-4.70 (m, 2H), 5.07-5.11 (m, IH), 5.24-5.30 (m, IH), 5.58-5.63 (m, IH), 7.43-7.51 (m, 4H), 7.84-7.96 (m, 3H); MS m/z 531 (M++l+Na).
Step 3:
A solution of product of Example 454, Step 2 (600 mg, 1.18 mmol) was stirred with HCI (4N, 3 mL, 11.8 mmol) in dioxane for 1 hr then the solvent removed in vacuo. The residue is dissolved in CH3CN (10 mL) treated with Boc-L-t-Bu-Gly (0.42 g, 1.38 mmol), TBTU (0.27 g, 1.18 mmol) followed by DIPEA (0.71 mL, 4.1 mmol). The mixture is stirred for 12 h and concentrated. The residue was dissolved in EtOAc/H20 and washed with IN HCI, saturated NaHC03, saturated NaCl, dried (MgSCU) and concentrated to give a thick yellow oil. The product was purified by flash chromatography using gradient elution 5% EtoAc/Hexanes 10% EtOAc/Hexanes , 30% EtOAc/Hexanes and finally as eluant to give the product as a thick oil (0.243 g, 33%) of the product as a mixture of diastereomers and rotamers. JH NMR (DMSO-de) 8: 0.83-1.00 (m, 10H), 1.34 (s, 9H), 1.58-1.59, 1.65-1.67 (m, 2H), 1,95-1.99, 2.04-2.06, 2.10-2.19,2.24-2.56 (m, 2H), 3.97-4.04 (m,3H), 4.08-4.17
(m, 3H), 4.29-4.31 (m, 2H), 4.59-4.72 (m, 3H), 5.06-5.10 (m, 1H), 5.18-5.30 (m, 1H), 5.60-5.63 (m, 1H), 6.59-6.65,6.70-6.74 (m, 1H), 7.43-7.51 (m, 4H), 7.84-7.96 (m, 3H), 8.66, 8.76 (s, 1H); MSm/z531(M-H-l+Na).
Step 4:
'I'o a suspension of product ot bxampie 454, Step 3 (240 mg, 0.39 mmol) in THF (15 mL), and H2O (2 mL) was added LiOH (82 mg, 1.95 mmol). The reaction mixture was stirred for 12 h then concentrated in vacuo until only the aqueous layer remained. The resulting aqueous residue was acidified to pH 3.0 by addition of 1.0 N aqueous HC1, and extracted with EtOAc (2x80mL). Combined organic extracts was dried (MgSC»4), filtered, and concentrated in vacuo to give the product as a tan solid (200 mg, 0.33 mmol, 85%):
'H NMR (DMSO-de) 5: 0.86,0.94 (s, 9H minor and major respectively), 1.23-1.42 (m, 2H), 1.34 (s, 9H), 1.8-2.1 (m, 2 H), 2.18-2.30 (m, 1H), 3.59-3.73 (m, 3H), 4.0-4.09 (m, 1H), 4.18-4.34 (m,3H), 4.56-4.62 (m, 1H), 4.66-4.67 (m, lH),4.82-4.92 (m, 1H), 5.0-5.20 (m, 1H), 5.91-6.08 (m, 1 H), 6.5-6.7 (m, 1H), 7.45-7.59 (m, 3H), 7.82-7.97 (m, 4H), 8.2-8.3, 8.3-8.4 (s, 1H); LC-MS (retention time: 1.50), MS m/z 593 (M++1).
Step 5:
To a solution of product of Example 454, Step 4 (190 mg, 0.32 mmol) and EDAC (122 mg, 0.64 mmol) and 4-DMAP (78 mg, 0.64 mmol) in THF (20 mL) was added commercially available methanesulfonamide (122 mg, 1.28 mmol). The resulting solution was stirred for 2 days, then DBU was added (95 pL, 0.64 mmol).
The reaction was stirred for 24 h then concentrated. The residue was partitioned between EtOAc (80mL) and water and washed with 1 N HC1), aqueous NaHCO3 (2x30 mL), dried (MgSO4) and purified by preparative HPLC (65-90% MeOH/Water/0.1% TFA) which gave 56 mg of a mixture of product and material in which the BOC group was removed. The material was further purified by preparative TLC (eluted with 10% MeOH/CH2Cl2 using 20X40cM plates from Analtech) to give Compound 454 as a tan solid (12 mg, 6%).
'H NMR (MeOD-d4 50/50 mixture of PI diastereomers) 6 0.88-0.99 (m, 2H), 1.01, 1.02 (s, 9H minor and major diastereomers respectively), 1.23-1.42 (m, 2H), 1.38 (s, 9H), 1.72-1.79 (m, IH), 1.86-1.88 (m, IH), 2.00-2.10 (m, 2H), 2.10-2.23 (m, IH), 2.3-2.5 (m, IH), 3.12,3.17 (s, 3H), 3.72-3.79 (m, IH), 4.26-4.41 (m, 3H),4.72 (d> J = 8.2 Hz, IH), 4.76 (d, J = 8.2 Hz, IH), 5.09-5.12 (t, J = 9.3 Hz, IH), 5.28 (dd, J = 3.5, 17.6 Hz, IH) 5.7-5.8 (m, IH), 6.55-6.80 (m, IH), 7.45-7.47 (m, 3H), 7.79-7.83 (m, 4H); LC-MS (retention time: 1.48), MS m/z 670 (M++1).
Compond 470
Stepl:
To a solution of commercially available N-Boc-(4S)-(cis)-Hydroxyproline-OMe (200mgs, 0.82 mmole), triphenylphosphine (320mgs, 1.22 mmole) and 1-naphthol (176mgs, 1.22 mmole) in 2.5 mL tetrahydrofuran was added dropwise a solution of diethyldiazodicarboxylate (190/xL, 1.22 mmole) in 1.0 mLTHF over 10 minutes. After stirring for 5.5 days, the reaction was concentrated in vacuo. The crude yellow oil was chromatographed on a 20X40cM preparative TLC plate (Analtech SiO2) eluting with 6-1 hexanes-ethyl acetate to yield the desired product as a pale yellow oil (150mgs, 33%).
'H NMR (CDC13> 500MHz) 6 1.44 (s, 9H) 2.33 (1H, m), 2.72 (1H, m), 3.77 and 3.38 (2s, 3H, rotamers), 3.88 (dd, 1H, J= 4.3,12.4 Hz), 3.97 (bd, 1H), 4.53 and 4.62 ;2t, 1H, J=7.8Hz, rotamers), 5.10 (bd, 1H), 6.76 (t, 1H, J=9.5 Hz), 7.37 (m, 1H), 7.46 m, 3H), 7.80 (d, 1H, J=7.7 Hz), 8.18 (m, 1H); JZ-MS A (retention time: 1.86; MS m/z 394 (M+Na)+
>tep 2:
To a stirred solution of Boc-(4R)-naphthal-l-oxo)-Pro-OEt (150mgs, 0.40 nmole) in l.SmLTHF and 0.5mL water was added lithium hydroxide (lOmgs). The
solution was stirred for 21 hours at room temperature and then diluted wih 0.5N
NaHCOs. The basic solution was extracted with ethyl acetate and then the aqueous
layer was acidified to pH 2 with the dropwise addition of cone. HC1. This acidified
layer was then extracted again with ethyl acetate. This second ethyl acetate layer was
dried with magnesium sulfate, filtered and then concentrated in vacuo to yield Boc-
(4R)-naphthal-l-oxo)-Pro-OH as pale-pink crystals (147mgs, 100%).
'H NMR (CDC13,500MHz) 8 1.47 and 1.48 (2s, 9H, rotamers), 2.40 and 2.52 (2m,
1H), 2.68 and 2.78 (2m, 1H), 3.78-4.07 (m, 2H), 4.57 and 4.69 (2t, 1H, J=7.6 and 8.0
Hz, rotamers), 5.12 (bd, 1H), 6.77 (dd, 1H, J=7.6, 21.2 Hz), 7.37 (m, 1H), 7.46 (m,
3H), 7.81 (t, 1H, J=5.8 Hz), 8.19 (m, 1H);
LC-MS A (retention time: 1.79 ; MS m/z 358 (M+H)+
Step 3:
To a solution of Boc-((4R)-naphthal-l-oxo)-Pro-OH (147mgs, 0.41 mmole) andracemic (lR/2S)/(lS/2R)-l-amino-2-vinylcyclopropane carboxylic acid ethyl ester hydrochloride salt (79mgs, 0.41 mmole) in 2.8mL methylene chloride was added DIPEA (250/iL, 1.44 mmole) and TBTU (158mgs, 0.49 mmole). The resulting solution was stirred under nitrogen for 20 hours and then diluted with 40mL methylene chloride. The organic layer was washed with water, IN NaHCCh, IN HC1, water and brine. The solution was then dried with sodium sulfate and concentrated in vacuo. Purification by preparative TLC yielded two separate diastereomers, higher Rf diastereomer A (P2[Boc(4R)-(naphthal-l-oxo)proline]-P1(1R, 2S Vinyl Acca)-OEt, 78 mgs, 38%) and lower Rf diastereomer B (P2[Boc(4R)-(naphthal-l-oxo)proline]-Pl(lS, 2R Vinyl Acca)-OEt, 91mgs,45%) as off white solids:
Diastereomer A: P2[Boc(4R)-(naphthal-l-oxo)proline]-Pl(lR, 2S Vinyl Acca)-OEt: 'HNMR (CDC13, SOOMHZ) 6 1.24 (t, 3H), 1.43 (s, 9H), 1.52 (m, 1H), 1.84 (m, 1H), 2.02 (m, 1H), 2.14 (m, 1H), 2.81 (m, 1H), 3.88 (m, 2H), 4.11 (q, 1H, J=7.15), 4.19 (m, 1H), 4.54 (m, 1H), 5.15 (m, 1H), 5.31 (dd, 1H, J=17,0.8 Hz), 5.77 (m, 1H), 6.83 (m, 1H), 7.36 (t, 1H, J=7.8 Hz), 7.46 (m, 3H), 7.78 (d, 1H, J=7.6 Hz), 8.14 (d, 1H, J=8.15Hz); LC-MS B (retention time: 1.85 ; MS m/z 495 (M+H)+
Diastereomer B, Example 10B: P2[Boc(4R)-(naphthal-l-oxo)proline]-Pl(lS, 2R Vinyl Acca)-OEt: *H NMR (dl-CHC!3, 500MHz) 8 1.24 (t, 3H), 1.42 (s, 9H), 1.85 (m, 1H), 2.15 (q, 1H, J=8.9Hz), 2.40 (m, 1H), 2.78 (m, 1H), 3.78 (m, 1H), 4.12 (m, 2H), 4.52 (m, 1H), 5.15 (m, 1H), 5.31 (m, 1H), 5.79 (m, 1H), 6.80 (m, 1H), 7.35 (t, 1H, J=7.6 Hz), 7.46 (m, 3H), 7.78 (d, 1H; J=7.6 Hz), 8.14 (d, 1H, J=8.10 Hz). LC-MS B (retention time: 1.85 ; MS m/z 495 (M+H)+ Scheme 2
To P2[Boc(4R)-(naphthal-l-oxo)proline]-Pl(lR, 2S Vinyl Acca)-OEt (A, higher Rf) (78mg, 0.16 mmol) was added 4N HC1 in dioxane (2.0mL) and the solution was allowed to stir for 30 minutes. Concentration in vacuo yielded the HC1 salt of P2[(4R)-(naphthal-4-oxo) proline)]-Pl(lR,2S Vinyl Acca)-OEt as a yellow oil which was taken on to the next step directly without further purification. To a solution of BOC L-tBuGly (73mgs, 0.32 nunole) and the HC1 salt of P2[(4R)-(naphthal-4-oxo) proline)]-Pl(lR,2S Vinyl Acca)-OEt (0.16 mmole) in llmL acetonitrile was added DIPEA (140jtL, 0.79 mmole) and HATU (132mgs, 0.35 mmole). The resulting solution was stirred under nitrogen for 17 hours and then diluted with lOOmL ethyl acetate. The organic layer was washed with water, IN
NaHCO3, IN HC1, water and brine. The solution was then dried with sodium sulfate
and concentrated in vacuo to yield the title compound as a pale-yellow oily film
(92mgs, 96%).
'H NMR (CDC13,500MHz) 5 1.06 (s, 9H), 1.22 (t, 3H, J=7.1), 1.38 (s, 9H), 1.41 (m,
IH), 1.82 (m, IH), 2.13 (m, IH), 2.42 (m, IH), 2.79 (m, IH), 3.92-4.2 (m, IH), 4.12
(q, 2H, J=6.6 Hz), 4.38 (bt, IH), 5.12 (d, IH, J=10.3 Hz) 5.2-5.39 (m, 3H), 5.75 (m,
IH), 6.82 (d, IH, J=7.5 Hz), 7,34-7.46 (m, 4H), 7.59 (bs, IH, NH), 7.76 (d, IH, J=7.9
Hz), 8.13 (d, lH,J=8.3Hz);
Step 5:
To a solution of product of Example 470, Step 4 (92mgs, O.lSmmole) in 750mL tetrahydrofuran and 250 mL water was added lithium hydroxide (4mgs). The resulting solution was stirred for 28.5 hours worked up as usual and then resubjected to the same conditions except adding twice as much lithium hydroxide (8mgs). After 24 hours the reaction was diluted with ethyl acetate and washed with water. The organic layer was dried with sodium sulfate and concentrated in vacuo. The resulting semisolid was purified by flash chromatography eJuting with 3-1 hexanes-ethyl acetate to yield BocNH-P3(t-BuGly)-P2[(Boc (4R)-(naphthal-l-oxo) proline)]-P1(1R,2S Vinyl Acca)-OH as a clear semisolid (30mgs, 34%). 'H NMR (d4-MeOH, 500MHz) 5 1.04 (s, 9H), 1.24 (t, IH, J=3.9 Hz), 1.32 (s, 9H), 1.66 (m, IH), 2.07 (m, IH), 2.40 (m, IH), 2.71 (m, IH), 4.04-4.07 (m, IH), 4.28 (m, IH), 4.42 (m, IH), 4.55 (m, IH), 5.02 (m, IH), 5.18-5.29 (m, 2H), 5.90 (m, IH), 6.54 (m,l H), 6.92 (m, IH), 4.26 (m, 4H), 7.77 (m, IH), 8.15 (m, IH); LC-MS C (retention time: 2.65 ; MS m/z 580 (M+H)+
Step 6:
To a solution of BocNH-P3(t-BuGly)-P2[(Boc (4R)-(naphthaI-l-oxo) proline)]-Pl(lR,2S Vinyl Acca)-OH (Example 470, Step 5) (65mgs, 0.11 mmole) in 3.7 mL tetrahydrofuran was added l,l'-carbonyl diimidazole (22mgs, 0.135 mmole). The resulting mixture was refluxed for 30 minutes and then cooled to room temperature. At this point, methanesulfonamide (27mgs, 0.28 mmole) and DBU
(34 DL, 0.224 ramole) were added. The reaction was stirred for 2 days and then mo DBU (10DL) and methanesulfonamide (9 mgs) were added. After 24 hours, the reaction was diluted with 50 mL ethyl acetate and washed with 50 mL 0.25N HC1 and 50 mL brine. The solution was dried with sodium sulfate and concentrated in vacuo. The crude material was purified by preparative TLC (3-2 ethyl acetate-hexanes) to give Compound 470 (21mgs, 28%) as a white filmy solid. 'H NMR (oVMeOH, 500MHz) 5 1.04 (s, 9H), 1.36 (s, 9H), 1.88 (t, 1H), 2.18 (m, 1H), 2.31 (m, 1H), 2.63 (m, 1H), 3.11 (bs, 3H), 4.076 (m, 1H), 4.30 (bd, 1H), 4.41 (bd, 1H), 4.52 (apparent t, 1H), 5.07 (m, 1H), 5.24-5.30 (m, 2H), 5.80 (m, 1H), 6.92 (d, 1H, J=7.45 Hz), 7.35-7.46 (m, 4H), 7.76 (d, 1H, J=8.1 Hz), 8.13 (d, 1H, J=8.3 Hz); LC-MS C (retention time: 2.57 ; MS m/z 657 (M+H)+
Step 1:
To P2[Boc(4R)-(naphthal-l-oxo)proline]-Pl(lS, 2R Vinyl Acca)-OEt (Example 470, Step 3, lower Rf) (91mgs, 0.18 mmole) was added 4N HC1 in dioxane (2.0mL) and the solution was allowed to stir for 30 minutes. Concentration in vacuo yielded the HC1 salt of P2[(4R)-(naphthal-l-oxo) proline)]-Pl(lS,2R Vinyl Acca)-OEt as a yellow oil which was taken on to the next step directly without further purification.
To a solution of N-Boc-L-terMeucine-OH or BOC L-tBuGly (85mgs, 0.37 mmole) and the HC1 salt of P2[(4R)-(naphthal-l-oxo) proline)]-Pl(lS,2R Vinyl Acca)-OEt (product obtained from reaction mentioned above) (0.18 mmole) in 13 mL acetonitrile was added DIPEA (160/iL, 0.92 mmole) and HATU (154mgs, 0.41 mmole). The resulting solution was stirred under nitrogen for 17 hours and then diluted with 100 mL ethyl acetate. The organic layer was washed with water, IN NaHCO3, IN HC1, water and brine. The solution was then dried with sodium sulfate and concentrated in vacuo to yield the title compound as a clear film (53mgs, 47%). 'H NMR (dl-CHCb, 500MHz) 5 1.02 (s, 9H), 1.22 (t, 3H, J=7.0 Hz), 1.39 (s, 9H), 1.47 (m, 1H), 1.88 (dd, 1H, J=8.0, 5.5 Hz), 2.07 (m, 1H), 2.42 (m, 1H), 2.80 (dt,
J=13.8,6.0 Hz, 1H), 3.96 (m, 1H), 4.14 (m, 2H), 4.34 (m, 2H), 4.77 (t, 1H, J= 7.2 Hz), 5.09-5.33 (m, 3H), 5.72 (m, 1H), 6.82 (d, 1H, J= 7.6 Hz), 7.34-7.50 (m, 4H), 7.77 (d, 1H, J= 8.0 Hz), 8.15 (d, 1H, J= 8.25 Hz); LC-MS C (retention time: 2.81; MS m/z 608 (M+H)+
Step 2:
This product was prepared according procedure described in Example 470, Step 5 (5mg, 10%), except using the product of Example 471, Step 1 instead. 'HNMR (d4-MeOH, SOOMHz) 5 0.99 (s, 9H), 1.28 (m, 1H), 1.37 (s, 9H), 1.60 (m, 1H), 2.06 (m, 1H), 2.28 (m, 1H), 2.66 (m, 1H), 3.91 (m, 1H), 4.33 (m, 2H), 4.61 (bt, 1H), 4.97 (d, 1H, J=11.0 Hz), 5.19 (m 2H), 6.09 (m, 1H), 6.88 (d, 1H, J= 7.1 Hz), 7.35-7.46 (m, 4H), 7.78 (d, 1H, J= 8.2 Hz), 8.12 (d, 1H, J=8.3 Hz); LC-MS C (retention time: 2.60 ; MS m/z 580 (M+H)+
Step 3:
To a solution of BocN-P3(L-tBuGly)- P2[(Boc (4R)-(naphthal-l-oxo) proline)]-Pl(lS,2R Vinyl Acca)-COOH (38mgs, 0.066 mmole) (Example 471, Step 2) in 2.2 mL tetrahydrofuran was added l.l'-carbonyl diimidazole (13mgs, 0.079 mmole). The resulting mixture was refluxed for 30 minutes and then cooled to room temperature. At this point, methanesulfonamide (16mgs, 0.16 mmole) and DBU (20uL, 0.13 mmole) were added. The reaction was stirred for 2 days and then more DBU (lO^L) and methanesulfonamide (9 mgs) were added. After 24 hours, the reaction was diluted with 50 mL ethyl acetate and washed with 50 mL 0.25N HC1 and 50 mL brine. The solution was dried with sodium sulfate and concentrated in vacuo. The crude product was purified using one 20X40cM preparative TLC plate from Analtech (eluent3-2 ethyl acetate-hexanes) to give Compound 471 (25mgs, 58%) as a white filmy solid.
'HNMR (oVMeOH, 500MHz) 6 1.03 (s, 9H), 1.34 (s, 9H), 1.80 (m, 1H), 2.18 (m, 1H), 2.31 (m, 1H), 2.68 (m, 1H), 3.09 (bs, 3H), 4.04 (m, 1H), 4.20-4.44 (m, 2H), 4.51 (apparent t, 1H), 5.08 (m, 1H), 5.25-5.31 (m, 2H), 5.77 (m, 1H), 6.93 (d, 1H, J=7.6 Hz), 7.36-7.45 (m, 4H), 7.77 (d, 1H, J=8.0 Hz), 8.15 m, 1H); LC-MS C (retention time: 2.57 ; MS m/z 657 (M+H)+
Example 472: Biological Studies
Recombinant HCV NS3/4A protease complex FRET peptide assay
The purpose of this in vitro assay was to measure the inhibition of HCV NS3 protease complexes, derived from the BMS, H77C or J416S strains, as described below, by compounds of the present invention. This assay provides an indication of how effective compounds of the present invention would be in inhibiting HCV proteolytic activity.
Serum from an HCV-infected patient was obtained from Dr. T. Wright, San Francisco Hospital. An engineered full-length cDNA (compliment deoxyribonucleic acid) template of the HCV genome (BMS strain) was constructed from DNA fragments obtained by reverse transcription-PCR (RT-PCR) of serum RNA (ribonucleic acid) and using primers selected on the basis of homology between other genotype la strains. From the determination of the entire genome sequence, a genotype la was assigned to the HCV isolate according to the classification of Simmonds et al. (See P Simmonds, KA Rose, S Graham, SW Chan, F McOmish, BC Dow, EA Follett, PL Yap and H Marsden, J. Clin. Microbiol., 31(6), 1493-1503 (1993)). The amino acid sequence of the nonstructural region, NS2-5B, was shown to be >97% identical to HCV genotype la (H77C) and 87% identical to genotype Ib (J4L6S). The infectious clones, H77C (la genotype) and J4L6S (Ib genotype) were obtained from R. Purcell (NIH) and the sequences are published in Genbank (AAB67036, see Yanagi,M., Purcell.R.H., Emerson.S.U. and Bukh,J. Proc. Natl. Acad. Sci. U.S.A. 94(l6),8738-8743 (1997); AF054247, see Yanagi,M., St Claire.M., Shapiro,M, Emerson.S.U., Purcell.R.H. and Bukh,J, Virology 244 (1), 161-172. (1998)).
The BMS, H77C and J4L6S strains were used for production of recombinant NS3/4A protease complexes. DNA encoding the recombinant HCV NS3/4A protease complex (amino acids 1027 to 1711) for these strains were manipulated as described by P. Gallinari et al. (see Gallinari P, Paolini C, Brennan D, Nardi C, Steinkuhler C, De Francesco R. Biochemistry. 38(l7):5620-32, (1999)). Briefly, a three-lysine solubilizing tail was added at the 3'-end of the NS4A coding region. The cysteine in the PI position of the NS4A-NS4B cleavage site (amino acid 1711) was changed to a glycine to avoid the proteolytic cleavage of the lysine tag. Furthermore, a cysteine to serine mutation was introduced by PCR at amino acid position 1454 to prevent the autolytic cleavage in the NS3 helicase domain. The variant DNA fragment was cloned in the pET21b bacterial expression vector (Novagen)and the NS3/4A complex was expressed in Escherichia. coli strain BL21 (DE3) (Invitrogen) following the protocol described by P. Gallinari et al. (see Gallinari P, Brennan D,
69 (1998)) with modifications. Briefly, NS3/4A expression was induced with O.SmM Isopropyl p-D-1-thiogalactopyranoside (IPTG) for 22hr at 20°C. A typical fermentation (10L) yielded approximately 80g of wet cell paste. The cells were resuspended in lysis buffer (lOmL/g) consisting of 25mM N-(2-Hydroxyethyl)Piperazine-N'-(2-Ethane Sulfonic acid) (HEPES), pH7.5, 20% glycerol, SOOmM Sodium Chloride (NaCl), 0.5% Triton-XlOO, lug/ml lysozyme, 5mM Magnesium Chloride (MgCla), lug/ml Dnasel, 5mM p-Mercaptoethanol (0ME), Protease inhibitor - Ethylenediamine Tetraacetic acid (EDTA) free (Roche), homogenized and incubated for 20 mins at 4°C. The homogenate was sonicated and clarified by ultra-centrifugation at 235000g for Ihr at 4°C. Imidazole was added to the supernatant to a final concentration of 15mM and the pH adjusted to 8.0. The crude protein extract was loaded on a Nickel - Nitrilotriacetic acid (Ni-NTA) column pre-equilibrated with buffer B (25mM HEPES, pH8.0, 20% glycerol, 500mM NaCl, 0.5% Triton-XlOO, 15mM imidazole, 5mM (3ME). The sample was loaded at a flow rate of ImL/min. The column was washed with 15 column volumes of buffer C (same as buffer B except with 0.2% Triton-XlOO). The protein was eluted with 5 column volumes of buffer D (same as buffer C except with 200mM Imidazole).
NS3/4A protease complex-containing fractions were pooled and loaded on a desalting column Superdex-S200 pre-equilibrated with buffer D (25mM HEPES, pH7.5, 20% glycerol, 300mM NaCl, 0.2% Triton-XlOO, lOmM pME). Sample was loaded at a flow rate of ImL/min. NS3/4A protease complex-containing fractions were pooled and concentrated to approximately 0.5mg/ml. The purity of theNS3/4A protease complexes, derived from the BMS, H77C and J4L6S strains, were judged to be greater than 90% by SDS-PAGE and mass spectrometry analyses.
The enzyme was stored at -80°C, thawed on ice and diluted prior to use in assay buffer. The substrate used for the NS3/4A protease assay was RET SI (Resonance Energy Transfer Depsipeptide Substrate; AnaSpec, Inc. cat # 22991)(FRET peptide), described by Taliani et al. in Anal. Biochem. 240(2):60-67 (1996). The sequence of this peptide is loosely based on the NS4A/NS4B natural cleavage site except there is an ester linkage rather than an amide bond at the cleavage site. The peptide substrate was incubated with one of the three recombinant NS3/4A complexes, in the absence or presence of a compound of the present invention, and the formation of fluorescent reaction product was followed in real time using a Cytofluor Series 4000.
The reagents were as follow: HEPES and Glycerol (Ultrapure) were obtained from GEBCO-BRL. Dimethyl Sulfoxide (DMSO) was obtained from Sigma. (3-Mercaptoethanol was obtained from Bio Rad. Assay buffer: 50mM HEPES, pH7.5; 0.15M NaCl; 0.1% Triton; 15% Glycerol;10mM pME. Substrate: 2 uM final concentration (from a 2mM stock solution in DMSO stored at -20°C). HCV NS3/4A type la (Ib), 2-3 nM final concentration (from a 5uM stock solution in 25mM HEPES, pH7.5,20% glycerol, 300mM NaCl, 0.2% Triton-XlOO, lOmM 0ME).
The assay was performed in a 96-well polystyrene black plate from Falcon. Each well contained 25u,l NS3/4A protease complex in assay buffer, 50ul of a compound of the present invention in 10% DMSO/assay buffer and 25uJ substrate in assay buffer. A
control (no compound) was also prepared on the same assay plate. The enzyme complex was mixed with compound or control solution for 1 min before initiating the enzymatic reaction by the addition of substrate. The assay plate was read immediately using the Cytofluor Series 4000 (Perspective Biosystems). The instrument was set to read an'emission of 340nm and excitation of 490nm at 25°C. Reactions were generally followed for approximately 15 minutes.
The percent inhibition was calculated with the following equation: 100-[(5Finh/6Fcon)xlOO]
where 8F is the change in fluorescence over the linear range of the curve. A nonlinear curve fit was applied to the inhibition-concentration dafa; and the 50% effective concentration (ICso) was calculated by the use of Excel Xl-fit software using the equation, y=A+((B-A)/(l+((C/x)AD))).
All of the compounds tested were found to have ICSOs of 10 uM or less. Further, compounds of the present invention, which were tested against more than one type of NS3/4A complex, were found to have similar inhibitory properties though the compounds uniformly demonstrated greater potency against the Ib strains as compared to the la strains.
Specificity Assays
The specificity assays were performed to demonstrate the selectivity of the compounds of the present invention in inhibiting HCV NS3/4A protease as compared to other serine or cysteine proteases.
The specificities of compounds of the present invention were determined against a variety of serine proteases: human leukocyte elastase (HLE), porcine pancreatic elastase (PPE) and human pancreatic chymotrypsin and one cysteine protease: human liver cathepsin B. In all cases a 96-well plate format protocol using colorimetric p-
nitroaniline (pNA) substrate specific for each enzyme was used as described previously (Patent WO 00/09543) with some modifications to the serine protease assays. All enzymes were purchased from Sigma while the substrates were from Bachem.
Each assay included a 2hr enzyme-inhibitor pre-incubation at RT followed by addition of substrate and hydrolysis to -30% conversion as measured on a Spectramax Pro microplate reader. Compound concentrations varied from 100 to 0.4 uM depending on their potency.
The final conditions for each assay were as follows:
50mM Tris(hydroxymethyl)aminomethane hydrochloride (Tris-HCl) pH8,0.5M Sodium Sulfate (Na2SO4), 50mM NaCl, O.lmMEDTA, 3% DMSO, 0.01%Tween-20 with:
133 uM suec-AAA-pNA and 20nM HNE or 8nM PPE; 133 uM succ-AAV-pNA and 15nM HLE; 100 uM succ-AAPF-pNA and 250pM Chymotrypsin.
lOOmM NaHP04 (Sodium Hydrogen Phosphate) pH 6, O.lmM EDTA, 3% DMSO, ImM TCEP (Tris(2-carboxyethyl)phosphine hydrochloride), 0.01% Tween-20, 30uM Z-FR-pNA and 5nM Cathepsin B (enzyme stock activated in buffer containing 20mM TCEP before use).
The percentage of inhibition was calculated using the formula: [l-((UVinh-UVblank)/(UVctl-UVblank))] x 100
A non-linear curve fit was applied to the inhibition-concentration data, and the 50% effective concentration (ICso) was calculated by the use of Excel Xl-fit software.
HCV Replicon Cell-based Assay
An HCV replicon whole cell system was established as described by Lohmann V, KornerF, Koch J, Herian U, Theilmann L, Bartenschlager R., Science 285(5424): 110-3 (1999). This system enabled us to evaluate the effects of our HCV Protease compounds on HCV RNA replication. Briefly, using the HCV strain IB sequence described in the Lohmann paper (Assession number:AJ238799), an HCV cDNA was generated encoding the 5' internal ribosome entry site (IRES), the neomycin resistance gene, the EMCV (encephalomyocarditis viurs)-IRES and the HCV nonstructural proteins, NS3-NS5B, and 3' non-translated region (NTR). In vitro transcripts of the cDNA were transfected into the human hepatoma cell line, Huh7. Selection for cells constitutively expressing the HCV replicon was achieved in the presence of the selectable marker, neomycin (G418). Resulting cell lines were characterized for positive and negative strand RNA production and protein production over time.
Huh7 cells, constitutively expressing the HCV replicon, were grown in Dulbecco's Modified Eagle Media (DMEM) containing 10% Fetal calf serum (PCS) and Img/ml G418 (Gibco-BRL). Cells were seeded the night before (1.5 x 104 cells/well) in 96-well tissue-culture sterile plates. Compound and no compound controls were prepared in DMEM containing 4% PCS, 1:100 Penicillin / Streptomysin, 1:100 L-glutamine and 5% DMSO in the dilution plate (0.5% DMSO final concentration in the assay). Compound /DMSO mixes were added to the cells and incubated for 4 days at 37°C. After 4 days, plates were rinsed thoroughly with Phosphate-Buffered Saline (PBS) (3 times 150u,l). The cells were lysed with 25^-1 of a lysis assay reagent containing the FRET peptide (RET SI, as described for the in vitro enzyme assay). The lysis assay reagent was made from 5X cell Luciferase cell culture lysis reagent(Promega #E153A) diluted to IX with distilled water, NaCl added to 150 mM final, the FRET peptide diluted to 10 jiM final from a 2 mM stock in 100%. DMSO. The plate was then placed into the Cytofluor 40OO instrument which had been set to 340nm excitation / 490 emission, automatic mode for 21 cycles and the plate read in a kinetic mode. ECso determinations were carried out as described for the ICso determinations.
As a secondary assay, EC50 determinations from the replicon FRET assay were confirmed in a quantitative RNA assay. Cells were lyzed using theRneasy kit (Qiagen). Purified total RNA was normalized using RiboGreen (Jones LJ, Yue ST, Cheung CY, Singer VL, Anal. Chem., 265(2):368-74 (1998)) and relative quantitation of HCV RNA expression assessed using the Taqman procedure (Kolykhalov AA, Mihalik K, Feinstone SM, Rice CM, Journal of Virology 74, 2046-2051 (2000)) and the Platinum Quantitative RT-PCR Thermoscript One-Step kit (Invitrogen cat # 11731-015). Briefly, RNA made to a volume of 5|j.l (
Biological Examples
Representative compounds of the invention were assessed in the HCV replicon cell assay and/or in several of the outlined specificity assays. For example, Compound 34 was found to have an ICso of 23 nanomolar (nM) against the NS3/4A BMS strain in the enzyme assay. Similar potency values were obtained with the published H77C (IC50 of 3 nM) and J4L6S (IC50 of 2.9 nM) strains. The EC50 value in the replicon assay was 166 nM.
In the specificity assays, the same compound was found to have the following activity: HLE > 100 uM; PPE > 200 uM; Chymotrypsin > 200 fxM; Cathepsin B > 200 piM. These results indicate this family of compounds are highly specific for the NS3 protease and many of these members inhibit HCV replicon replication.
The compounds of the current invention were tested and found to have activities in the ranges as follow:
IC50 Activity Ranges (NS3/4A BMS Strain): A is 10 - 100 micromolar (uM); B is 1 - 10 uM; C is 0.1 - 1 uM; D is
EC50 Activity Range (for compounds tested): A is 10 - 100 uM; B is 1 - 10 pM; C is 0.1 - 1 uM;Dis
Note that by using the Patent example number and the Patent compound number shown in the table the structures of comounds can be found herein.
In accordance with the present invention, preferably the compounds have a biological activity (ECso) of 10 uM or less, more preferably 1 pM or less and most preferably 100 nM or less.
The following compounds that can be made using the methods described herein and specifically in sections A through K of the exemplification section and more specifically in sections B, E, F and G. Moreover it should be made clear that each of the groups B, R3, R2 and Rj shown below can be replaced by any of the groups exemplified in sections A through K and elsewhere herein or designated in Formula I. For example the Ra group in Table 2 is shown as a t-butyl group but one skilled in the art would recognize that for each of the entries cited below this group could be replaced with an isopropyl group or a C i.6 alkyl substituted with an alkoxy. Or the B group shown below could be replaced with a tert-butyl urea moiety for each of the entries cited below.
WE CLAIM:
1. An acylsulfonamides compound having the formula
(Formula Removed)
wherein:
(a) R1 is C1-8 alkyl, C3-7 cycloalkyl, or C4-10 alkylcycloalkyl;
(b) misloR2;
(c) n is 1 or 2;
(d) R2 is H, C1-6alkyl, C2-6 alkenyl or C3-7 cycloalkyl, each optionally substituted with halogen;
(e) R3 is C1-8 alkyl optionally substituted with halo, cyano, amino, C1-6 dialkylamino, C6-10 aryl, C7-14 alkylaryl, C1-6 alkoxy, carboxy, hydroxy, aryloxy, Crwalkylaryloxy, C2-6 alkylester, C8-15 alkylarylester; C3-12 alkenyl, C3.7 cycloalkyl, or C4-10 alkylcycloalkyl, wherein the cycloalkyl or alkylcycloalkyl are optionally substituted with hydroxy, C1-6 alkyl, C2-6 alkenyl or C1-6 alkoxy; or R3 together with the carbon atom to which it is attached forms a C3-7 cycloalkyl group optionally substituted with C2-6 alkenyl;
(f) Y is H, phenyl substituted with nitro, pyridyl substituted with nitro, or C1-6 alkyl optionally substituted with cyano, OH or C3.7 cycloalkyl; provided that if R4 or R5 is H then Yis H;
(g) B is H, C1-6alkyl, R4-(C=O)-, R4O(C=O), R4-N(R5)-C(=O), R4-N(R5)-C(=S)-, R4SO2-, or R4-N(R5)SO2-;
(h) R4 is (i) C1-10 alkyl optionally substituted with phenyl, carboxyl, C1-6 alkanoyl, 1-3 halogen, hydroxy, -OC(O)C1-6 alkyl, C1-6 alkoxy, amino
optionally substituted with C1-6 alkyl, amido, or (lower alkyl) amido; (ii) C3-7cycloalkyl, C3-7 cycloalkoxy, or C1-10alkylcycloalklyl, each optionally substituted with hydroxy, carboxyl, (C1-6alkoxy)carbonyl, amino optionally substituted with C1-6 alkyl, amido, or (lower alkyl) amido; (iii) C1-10 aryl or C7-16arylalkyl, each optionally substituted with C1-6 alkyl, halogen, nitro, hydroxy, amido, (lower alkyl) amido, or amino optionally substituted with C1-6 alkyl; (iv) Het; (v)
bicyclo(l.1.l)pentane;or(vi)-C(O)OC1-6alkyl,C2-6alkenyl or C2-6 alkynyl;
(i) R5 is H; C1-6 alkyl optionally substituted with 1-3 halogens; or C1-e alkoxy provided R4 is C1-10 alkyl;
(j) X is O,S,SO,SO2,OCH2,CH2OorNH;
(k) R' is Het; or C1-10 aryl or C7-14 alkylaryl, optionally substituted with Ra; anu
(1) R'is C1-salkyl, C3-7cycloalkyl, C1-6alkoxy, C1-7 cycloalkoxy, halo-C1-6 alkyl, CF3, mono-or di- halo-C1-6alkoxy, cyano, halo, thioalkyl, hydroxy, alkanoyl, NO2, SH,, amino, C1-6alkylamino, di (C1-6) alkylamino, di (C1-6) alkylamide, carboxyl, (C1-6) carboxyester, C1-6 alkylsulfone, C1-6alkylsulfonamide, di (C1-6) alkyl(alkoxy)amine, C6-10 aryl, C7-14 alkylaryl, or a 5-7 membered monocyclic heterocycle; with the proviso that X- R' is not
(Formula Removed)
or a pharmaceutically acceptable salt, solvate thereof.
2. The compound as claimed in claim 1, wherein R1 is C3-7 cycloalkyl.
3. The compound as claimed in claim 1, wherein R2 is C1-6alkyl, C2-6 alkenyl or C3-7 cycloalkyl.
4. The compound as claimed in claim 3, wherein R2 is C2-6 alkenyl.
5. The compound as claimed in claim 1, wherein R3 is C1-8 alkyl optionally substituted with Cearyl, C1-6 alkoxy, carboxy, hydroxy, aryloxy, C7-14 alkylaryloxy, C2-6 alkylester, C8-15 alkylarylester; C3-12 alkenyl, C3-7 cycloalkyl, or C4-10 alkylcycloalkyl.
6. The compound as claimed in claim 5, wherein R3 is C1-8 alkyl optionally substituted with C1-6 alkoxy; or C3-7 cycloalkyl.
7. The compound as claimed in claim 1, wherein Y is H.
8. The compound as claimed in claim 1, wherein B is H, C1-6 alkyl, R4-(C=O)-, R4O(C=O)-, R4-N(R5)-C(=O)-, R4-N(R5)-C(=S)-, R4SO2-, or R4-N(R5)-SO2-.
9. The compound as claimed in claim 8, wherein B is R4-(C=O)-, R40(C=O)-, or R4-N(R5)-C(=O)-.
10. The compound as claimed in claim 9, wherein B is R40(C=O)- and R4 is C1-6 alkyl.
11. The compound as claimed in claim 1, wherein R4 is (i) C1-10 alkyl optionally substituted with phenyl, carboxyl, C1-6 alkanoyl, 1-3 halogen, hydroxy, C1-5 alkoxy; (ii) C3-7 cycloalkyl, C3-7 cycloalkoxy, or C4-10 alkylcycloalklyl; or (iii) C6-10 aryl or C7-16 arylalkyl, each optionally substituted with C1-6 alkyl or halogen.
12. The compound as claimed in claim 11, wherein R4 is (i) C1-10 alkyl optionally substituted with 1-3 halogen or C1-6 alkoxy; or (ii) C3-7 cycloalkyl or C4-10 alkylcycloalkyl.
13. The compound as claimed in claim 1, wherein R5 is H or C1-6 alkyl optionally substituted with 1-3 halogens.
14. The compound as claimed in claim 13, wherein R5 is H.
15. The compound as claimed in claim 1, wherein X is O or NH.
16. The compound as claim in claim 1, wherein R' is Het; or C6-10 aryl optionally substituted with Ra.
17. The compound as claimed in claim 16, wherein R' is Het.
18. The compound as claim in claim 1, wherein the heterocycle contains 1 or 2 nitrogen atoms and optionally a sulfur atom or an oxygen atom in the ring.
19. The compound as claimed in claim 18, wherein the heterocycle is substituted with at least one of C1-6 alkyl, C1-6 alkoxy, halo, C6-10 aryl, C7-14 alkylaryl, or a 5-7 membered monocyclic heterocycle.
20. The compound as claimed in claim 1, wherein Ra is C1-6alkyl, C3-7 cycloalkyl, C1-6 alkoxy, halo-C1-6 alkyl, halo, amino, C6 aryl, or a 5-7 membered monocyclic heterocycle.
21. A compound as claimed in claim 1, wherein the said compound is having the formula
(Formula Removed)
wherein:
(a) R1 is C3-7 cycloalkyl;
(b) R2 is C1-6 alkyl, C2-6 alkenyl or C3-7 cycloalkyl;
(c) R3 is C1-8 alkyl optionally substituted with C6aryl, C1-5 alkoxy, carboxy, hydroxy, aryloxy, C7-14 alkylaryloxy, C2-6 alkylester, C8-15 alkylarylester; C3.12 alkenyl, C3.7 cycloalkyl, or C4-10 alkylcycloalkyl;
(d) Y is H;
(e) B is H,C1-6 alkyl, R4-(C=O)-,R4O(C=OKR4-N(R5)-C(=O)-, R4-N(R5)-C(=S)-, R4SO2-, or R4-N(R5)-SO2-;
(f) R4 is (i) C1-10 alkyl optionally substituted with phenyl, carboxyl, C1-6 alkanoyl, 1-3 halogen, hydroxy, C1.6 alkoxy; (ii) C3-7 cycloalkyl, C3-7 cycloalkoxy, or C4-10alkylcycloalkIyl; or (iii) C6-10 aryl or C7-16 arylalkyl, each optionally substituted with C1-6 alkyl or halogen;
(g) R5 is H or C1-6 alkyl optionally substituted with 1-3 halogens;
(h) XisOorNH;
(i) R' is Het; or C6-10 aryl optionally substituted with Ra; and (j) Ra is C1-6 alkyl, C3.7 cycloalkyl, C1-6 alkoxy, halo-C1-6 alkyl, halo, amino, C6 aryl, or a 5-7 membered monocyclic heterocycle; with the proviso that Xa- R' is not
(Formula Removed)
or a pharmaceutically acceptable salt, solvate thereof.
22. The compound as claimed in claim 21, wherein R' is a bicyclic heterocycle.
23. The compound as claim in claim 22, wherein the heterocycle contains 1 or 2 nitrogen atoms and optionally a sulfur atom or an oxygen atom in the ring.
24. The compound as claim in claim 22, wherein the heterocycle is substituted with at least one of C1-6 alkyl, C1-6 alkoxy, halo, C6 aryl, and a 5-7 membered monocyclic heterocycle.
25. The compound as claimed in claim 21, wherein R' is a bicyclic heterocycle containing 1 nitrogen atom and substituted with methoxy and at least one of a C6 aryl and a 5-7 membered monocyclic heterocycle.
26. The compound as claimed in claim 21, wherein R' is a monocyclic heterocycle.
27. The compound as claimed in claim 26, wherein the heterocycle contains 1 or 2 nitrogen atoms and optionally a sulfur atom or an oxygen atom in the ring.
28. The compound as claimed in claim 26, wherein the heterocycle is substituted with at least one of C1-6 alkyl, C1-6 alkoxy, halo, C6-10 aryl, C7-14 alkylaryl, or a 5-7 membered monocyclic heterocycle.
29. The compound as claimed in claim 21, wherein R' is a monoyclic heterocycle containing 1 or 2 nitrogen atoms and substituted with methoxy and at least one of a C6 aryl and a 5-7 membered monocyclic heterocycle.
30. A compound as claimed in claim 1, wherein the said compound is
having the formula
(Formula Removed)
wherein:
(a) Ri is C3.7 cycloalkyl;
(b) R2isC2-6alkenyl;
(c) R3 is Ci_8 alkyl;
(d) YisH;
(e) B is R40(C=O)-, or R4-N(R5)-C(=O)-;
(f) R4 is C1-10 alkyl;
(g) R5 is H;
(h) R' is a bicyclic heterocycle optionally substituted with Ra; and (i) Ra is C1-6 alkyl, C1-6 alkoxy, halo, C6 aryl, or a 5-7 membered monocyclic heterocycle; with the proviso that O- R' is not
(Formula Removed)
or a pharmaceutically acceptable salt, solvate thereof.
31. The compound as claimed in claim 30, wherein R1 is cyclopropyl or
cyclobutyl.
32. The compound as claimed in claim 30, wherein R2 is vinyl.
33. The compound as claimed in claim 30, wherein R3 is t-butyl.
34. The compound as claimed in claim 30, wherein R4 is t-butyl.
35. The compound as claimed in claim 30, wherein R' is quinoline or isoquinoline optionally substituted with Ra.
36. The compound as claimed in claim 30, wherein Ri is cyclopropyl, R2 is vinyl, R3 is t-butyl, R4 is t-butyl, and R' is isoquinoline substituted with Ra.
37. The compound as claimed in claim 36, wherein Ra is C1-6 alkoxy.
38. The compound as claimed in claim 37, wherein Ra further includes at least one of C6 aryl or a.5-7 membered monocyclic heterocycle.
39. A composition comprising the compound as claimed in claim 1 or a pharmaceutically acceptable salt, solvate thereof and a pharmaceutically acceptable carrier.
40. A compound as claimed in claim 1, wherein the said compound is selected from
(Formula Removed)
41. A compound as claimed in claim 1, wherein the said compound is selected from
(Formula Removed)
42. A compound as claimed in claim 1, wherein the said compound is selected from
(Formula Removed)
43. A compound as claimed in claim 1, wherein the said compound is selected from
(Formula Removed)
44. A compound as claimed in claim 1, wherein the said compound is selected from
(Formula Removed)
45. A compound as claimed in claim 1, wherein the said compound is selected from
(Formula Removed)
46. A compound as claimed in claim 1, wherein the said compound is selected from
(Formula Removed)
47. A compound as claimed in claim 1, wherein the said compound is selected from
(Formula Removed)
48. A compound as claimed in claim 1, wherein the said compound is selected from
(Formula Removed)
49. A compound as claimed in claim 1, wherein the said compound is
selected from
(Formula Removed)
50. A compound as claimed in claim 1, wherein the said compound is selected from
(Formula Removed)
51. A compound as claimed in claim 1, wherein the said compound is selected from
(Formula Removed)
52. A compound as claimed in claim 1, wherein the said compound is
selected from
(Formula Removed)
53. A compound as claimed in claim 1, wherein the said compound is selected from
(Formula Removed)
54. A compound as claimed in claim 1, wherein the said compound is selected from
(Formula Removed)
55. A compound as claimed in claim 1, wherein the said compound is selected from
(Formula Removed)
56. A compound as claimed in claim 1, which is
(Formula Removed)
57. A compound as claimed in claim 1, wherein the said compound is
selected from
(Formula Removed)
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