Title of Invention

BORONIC ACID AND ESTER COMPOUNDS, PHARMACEUTICAL COMPOUNDS COMPRISING THEM AND PROCESS FOR THEIR PREPARATION .

Abstract The invention discloses Boronic acid and Ester compounds : wherein X, Q, R1 and R2 are as defined in the specification. The invention is also for pharmaceutical compositions, comprising them and process for their preparation.
Full Text BORONIC ACID AND ESTER COMPOUNDS, PHARMACEUTICAL
COMPOSITIONS COMPRISING THEM AND PROCESS FOR THE RPREPRATION
FIELD OF THE INVENTION
[0001] The present invention relates to boronic acid and boronic ester
compounds useful as proteasome inhibitors and modulation of apoptosis.
BACKGROUND OF THE INVENTION
[00021 The proteasome, (also refered to as multicatalytic protease (MCP),
multicatalytic proteinase, multicatalytic proteinase complex, multicatalytic
endopeptidase complex, 20S, 26S, or ingensin) is a large, multiprotein complex present
in both the cytoplasm and the nucleus of all eukaryotic cells. It is a highly conserved
cellular structure that is responsible for the ATP-dependent proteolysis of most cellular
proteins (Tanaka, Biochem Biophy. Res. Commun., 1998, 247, 537). The 26S
proteasome consists of a 20S core catalytic complex that is capped at each end by a 19S
regulatory subunit. The archaebacterial 20S proteasome contains fourteen copies of two
distinct types of subunits, a and p, which form a cylindrical structure consisting of four
stacked rings. The top and bottom rings contain seven α-subunits each, while the inner
rings contain seven β-subunits. The more complex eukaryotic 20S proteasome is
composed of about 15 distinct 20-30 kDa subunits and is characterized by three major
activities with respect to peptide substrates. For example, the proteasome displays
tryptic-, chymotryptic-, and peptidylglutamyl peptide-hydrolytic activities (Rivett,
Biochem. J., 1993, 291, 1 and Orlowski, Biochemistry, 1990, 29, 10289). Further, the
proteasome has a unique active site mechanism which is believed to utilize a threonine
residue as the catalytic nucleophile (Seemuller, et al., Science, 1995, 268, 579).
[0003] The 26S proteasome is able to degrade proteins that have been marked by
the addition of ubiquitin molecules. Typically, ubiquitin is attached to the e-amino
groups of lysines in a multistep process utilizing ATP and El (ubiquitin activating) and
E2 (ubiquitin-conjugating) enzymes. Multi-ubiquitinated substrate proteins are'
recognized by the 26S proteasome and are degraded. The multi-ubiquitin chains are
generally released from the complex and ubiquitin is recycled (Goldberg, et al., Nature,
1992, 357, 375).

[0004] Numerous regulatory proteins are substrates for ubiquitin dependent
proteolysis. Many of these proteins function as regulators of physiological as well as
pathophysiological cellular processes. Alterations in proteasome activity have been
implicated in a number of pathologies including neurodegenerative diseases such as
Parkinson's disease, Alzheimer's disease, as well as occlusion/ischaemia reperrusion
injuries, and aging of the central nervous system.
[0005] The ubiquitin-proteasome pathway also plays a role in neoplastic growth.
The regulated degradation of proteins such as cyclins, CDK2 inhibitors, and tumor
suppressors is believed to be important in cell cycle progression and mitosis. A known
substrate of the proteasome is the tumor suppressor p53 which is involved in several
cellular processes (see, e.g., Ko, L. J. Genes Dev., 1996, 10, 1054). Tumor suppressor
p53 has been shown to induce apoptosis in several haematopoietic cell lines (Oren, M,
Semin. Cancer Biol., 1994, 5, 221). Induction of p53 leads to cell growth arrest in the
G1 phase of the cell cycle as well as cell death by apoptosis. Tumor suppressor p53
degradation is known to be carried out via the ubiquitin-proteasome pathway, and
disrupting p53 degradation by inhibition of the proteasome is a possible mode of
inducing apoptosis.
[0006] The proteasome is also required for activation of the transcription factor
NF-KB by degradation of its inhibitory protein, IKB (Palombella, et al., Cell, 1994, 78,
773). NF-KB has a role in maintaining cell viability through the transcription of
inhibitors of apoptosis. Blockade of NF-KB activity has been demonstrated to make cells
more susceptible to apoptosis.
[0007] Several inhibitors of the proteolytic activity of the proteasome have been
reported. See, for example, Kisselev, et al., Chemistry & Biology, 2001, 8, 739.
Lactacystin is a Streptomyces metabolite that specifically inhibits the proteolytic activity
of the proteasome complex (Fenteany, et al., Science, 1995,268,726). This molecule is
capable of inhibiting the proliferation of several cell types (Fenteany, et al., Proc. Natl.
Acad Sci. USA, 1994, 91, 3358). It has been shown that lactacystin binds irreversibly,
through its β-actone moiety, to a threonine residue located at the amino terminus of the
β- subunit of the proteasome.
[0008] Peptide aldehydes have been reported to inhibit the chymotrypsin-like
activity associated whh the proteasome (Vinitsky, et al., Biochemistry, 1992, 31, 9421;
Tsubuki, et al., Biochem. Biophys. Res. Common., 1993, 196, 1195; and Rock, et al.,

Cell, 1994, 78, 761). Dipeptidyl aldehyde inhibitors that have IC50 values in the 10-100
nM range in vitro (Iqbal, M., et al., J. MedChem., 1995, 38, 2276) have also been
reported. A series of similarly potent in vitro inhibitors from α-ketocarbonyl and
boronic ester derived dipeptides has also been reported (Iqbal, et al., Bioorg. Med.
Chenu Lett., 1996, 6, 287, U.S. Pat Nos. 5,614,649; 5,830,870; 5,990,083; 6,096,778;
6,310,057; U.S. Pat. App. Pub. No. 2001/0012854, and WO 99/30707).
[0009] N-terminal peptidyl boronic ester and acid compounds have been
reported previously (U.S. Pat. Nos. 4,499,082 and 4,537,773; WO 91/13904; Kettner, et
al., J. Biol. Chem., 1984, 259(24), 15106). These compounds are reported to be
inhibitors of certain proteolytic enzymes. N-terminal tri-peptide boronic ester and acid
compounds have been shown to inhibit the growth of cancer cells (U.S. Pat. No.
5,106,948). A broad class of N-terminal tri-peptide boronic ester and acid compounds
and analogs thereof has been shown to inhibit renin (U.S. Pat. No. 5,169,841).
[0010] Various inhibitors of the peptidase activities of the proteasome have also
been reported. See, e.g., Dick, et al., Biochemistry, 1991, 30, 2725; Goldberg, et al.,
Nature, 1992, 357, 375; Goldberg, Eur. J. Biochem., 1992, 203, 9; Orlowski,
Biochemistry, 1990, 29, 10289; Rivett, et al., Archs. Biochem. Biophys., 1989, 218, 1;
Rivett, et al., J. Biol Chem., 1989, 264, 12215; Tanaka, et al., New Biol., 1992, 4, 1;
Murakami, et al., Proc. Natl. Acad Sci. USA, 1986, 83, 7588; Li et al., Biochemistry,
1991, 30, 9709; Goldberg, Eur. J. Biochem., 1992,203,9; and Aoyagi, et al., Proteases
and Biological Control, Cold Spring Harbor Laboratory Press (1975), pp. 429-454.
[0011] Stein et al., U.S. patent application Ser. No. 08/212,909, filed March 15,
1994, report peptide aldehydes useful for reducing in an animal both the rate of loss of
muscle mass and the rate of intracellular protein breakdown. The compounds are also
said to reduce the rate of degradation of p53 protein in an animal. Palombella, et al.,
WO 95/25533, report the use of peptide aldehydes to reduce the cellular content and
activity of NF-kB in an animal by contacting cells of the animal with a peptide aldehyde
inhibitor of proteasome function or ubiquitin conjugation. Goldberg and Rock, WO
94/17816, report the use of proteasome inhibitors to inhibit MHC-I antigen presentation.
Stein, et al., U.S. Pat. No. 5,693,617 report peptidyl aldehyde compounds as proteasome
inhibitors useful for reducing the rate of degradation of protein in an animal. Inhibition
of the 26S and 20S proteasome by indanone derivatives and a method for inhibiting cell
proliferation using indanone derivatives are reported by Lum et al., U.S. Pat No.

5,834,487. Alpha-ketoamide compounds useful for treating disorders mediated by 20S
proteasome in mammals are reported in Wang et al., U.S. Pat. No. 6,075,150. France, et
al., WO 00/64863, report the use of 2,4-diamino-3-hydroxycarboxylic acid derivatives
as proteasome inhibitors. Carboxylic acid derivatives as proteasome inhibitors are
reported by Yamaguchi et al., EP 1166781. Ditzel, et al., EP 0 995 757 report bivalent
inhibitors of the proteasome. 2-Aminobenzylstatine derivatives that inhibit non-
covalently the chymotrypsin-like activity of the 20S proteasome have been reported by
Garcia-Echeverria, et al., Bioorg. Med Chem. Lett., 2001, 11, 1317.
[0012] Some further proteasome inhibitors can contain boron moieties. For
example, Drexler et al., WO 00/64467, report a method of selectively inducing
apoptosis in activated endothelial cells or leukemic cells having a high expression level
of c-rayc by using tetrapeptidic boronate containing proteasome inhibitors. Furet et al.,
WO 02/096933 report 2-[[N-(2-amino-3-(heteroaryl or
aryl)propionyl)aminoacyl]amino]alkylboronic acids and esters for the therapeutic
treatment of proliferative diseases in warm-blooded animals. U.S. Pat Nos. 6,083,903;
6,297,217; 5,780454; 6,066,730; 6,297,217; 6,548,668; U.S. Patent Application Pub.
No. 2002/0173488; and WO 96/13266 report boronic ester and acid compounds and a
method for reducing the rate of degradation of proteins. A method for inhibiting viral
replication using certain boronic acids and esters is also reported in U.S. Pat. No.
6,465,433 and WO 01/02424. Pharmaceutically acceptable compositions of boronic
acids and novel boronic acid anhydrides and boronate ester compounds are reported by
Plamondon, et al., U.S. Patent Application Pub. No. 2002/0188100. A series of di- and
tripeptidyl boronic acids are shown to be inhibitors of 20S and 26S proteasome in
Gardner, et al., Biochem. J., 2000,346,447.
[0013] Other boron-containing peptidyl and related compounds are reported in
U.S. Pat. Nos. 5,250,720; 5,242,904; 5,187,157; 5,159,060; 5,106,948; 4,963,655;
4,499,082; and WO 89/09225, WO/98/17679, WO 98/22496, WO 00/66557, WO
02/059130, WO 03/15706, WO 96/12499, WO 95/20603, WO 95/09838, WO 94/25051,
WO 94/25049, WO 94/04653, WO 02/08187, EP 632026, and EP 354522.
[0014] A great interest exists, as evidenced by the above references, in drugs
which can modulate proteasome activity. For example, molecules capable of inhibiting
proteasome activity can arrest or delay cancer progression by interfering with the

ordered degradation of cell cycle proteins or tumor suppressors. Accordingly, there is an
ongoing need for new and/or unproved inhibitors of proteasome.
SUMMARY OP THE INVENTION
[0015] The present invention is directed to novel boronic acid and boronic ester
compounds useful as proteasome inhibitors and modulation of apoptosis. The subject
invention also comprises methods for inhibition of multicatalytic protease ("MCP")
associated with certain disorders, including the treatment of muscle wasting disorders.
[0016] In one embodiment are provided compounds having Formula (I):.

wherein constituent members are defined infra, as well as preferred constituent
members.
[0017] In another embodiment the present invention provides a pharmaceutical
composition comprising a compound of Formula (I) and a pharmaceutically acceptable
carrier.
[0018] In another embodiment the present invention provides a method of
inhibiting activity of proteasome comprising contacting a compound of Formula (I) with
said proteasome.
[0019] In another embodiment the present invention provides a method of
treating cancer comprising administering to a mammal having or predisposed to said
cancer a therapeutically effective amount of a compound of Formula (I).
[0020] In another embodiment the present invention provides a method of
treating cancer treating cancer comprising administering to a mammal having or
predisposed to said cancer a therapeutically effective amount of a compound of Formula
(I), and wherein said cancer is selected from skin, prostate, colorectal, pancreas, kidney,
ovary, mammary, liver, tongue, lung, and smooth muscle tissue.

[0021] In another embodiment the present invention provides a method of
treating cancer comprising administering to a mammal having or predisposed to said
cancer a therapeutically effective amount of a compound of Formula (I), and wherein
said cancer is selected from leukemia, lymphoma, non-Hodgkin lymphoma, myeloma,
and multiple myeloma.
[0022] In another embodiment the present invention provides a method of
treating cancer comprising administering to a mammal having or predisposed to said
cancer a therapeutically effective amount of a compound of Formula (I) in combination
with one or more antitumor or anticancer agent and/or radiotherapy.
[0023] In another embodiment the present invention provides a method of
inhibiting activity of transcription factor NF-KB comprising contacting IKB, the
inhibitor of transcription factor NF-KB, with a compound of Formula (I).
[0024] In another embodiment, the present invention provides a compound of
Formula (I) for use in therapy.
[0025] In another embodiment, the present invention provides use of a
compound of Formula (I) for the manufacture of a medicament for the treatment of
cancer.
[0026] In another embodiment, the present invention provides processes for
preparing a compound of Formula (II):

wherein constituent members are defined herein, by reacting a diol of Formula (II-b):


with an appropriate trialkoxyborane of Formula (II-a):

wherein constituent members are defined herein; for a time and under conditions
suitable for forming an intermediate of Formula (II-c):

and reacting the intermediate of Formula (II-c) with either i) a reagent of formula
R1 CH2MXhal, wherein M is a metal and Xhal is a halogen atom, or ii) a reagent of
formula R1CH2Li, for a time and under conditions suitable for forming the compound
of Formula (II).
[0027] These and other features of the compounds will be set forth in expanded
form as the disclosure continues.
DESCRIPTION OF EMBODIMENTS OF THE INVENTION
[0028] The present invention provides, inter alia, compounds that can inhibit
proteasome activity and be used for the treatment of diseases or disorders related to
proteasome activity. Compounds of the invention include compounds of Formula (I)

or pharmaceutically acceptable salt, stereoisomeric or tautomeric form thereof, wherein:
R1 is C1-C8 alkyl, C2-C8 alkenyl, C1-C8 alkynyl, or C3-C7 cycloalkyl;

R2 is H, -(CH2)aCH2NHC(=NR4)NH-Y, -(CH2)bCH2ONR5R6, -
(CH2)cCH2N(R4)CONH2, -(CH2)dCH(R7)NR9R10, or -(CH2)eCH(R7)ZR8;
a, b, and c are each, independently, 0,1,2,3,4,5, or 6;
d and e are each, independently, 0,1,2,3, or 4;
R4 is H or C1-C10alkyl;
R5 and R6 are each, independently, H, C1-C10 alkyl, carbocyclyl, heterocarbocyclyl, or
an amino protecting group;
alternatively, R5 and R6 together with the N atom to which they are attached form a
heterocarbocyclyl group;
R7 is H or C1-C10 alkyl;
R8 is H, C1-C10 alkyl, alkyl-S(=O)2-, aryl-S(=O)2-, H2NS(=O)2-, -SO3H, or a protecting
group;
R9 is H, C1-C10 alkyl, carbocyclyl, or heterocarbocyclyl;
R10 is H, C1-C10 alkyl, carbocyclyl, heterocarbocyclyl, C1-C10 alkyl-C(=O)-,
C2-C10 alkenyl-C(=O)-, C2-C10 alkynyl-C(=O)-, carbocycryl-C(=O)-,
heterocarbocyclyl-C(!=0)-, carbocyclylalkyl-C(=O)-,
heterocarbocyclylalkyl-C(=O)-, C1-C10 alkyl-S(=O)-, carbocyclyl-S(=O)2-,
heterocarbocyclyl-S(=O)2-, carbocyclylalkyl-S(=O)2-,
heterocarbocyclylalkyl-S(=O)-, C1-C10 aIkyl-NHC(=O),
carbocyclyl-NHC(=O),heterocarbocyclyl-NHC(=O)-,
carbocyclylalkyl-NHC(=O)-, heterocarbocyclylalkyl-NHC(=O)-,
C1-C10 alkyl-OC(=O)-, carbocyclyl-CC(=O), heterocarbocyclyl-OC(=O)-,
carbocyclylalkyl-OC(=O)-, heterocarbocyclylalkyl-OC(=O)-,
C1-C10 alkyl-NH-C(=O)NHS(=O)2-, carbocyclyl-NH-C(=O)-NHS(=O)2-,
heterocarbocyclyl-NH-C(=O)-NHS(=O)2-, C1-C10 alkyl-S(=O)2-NH-C(=O)-,
carbocyclyl-S(=O)2-NH-C(=O)-, heterocarbocycryl-S(=O)2-, -NH-(=O)-, or an
amino protecting group; wherein R10 is optionally substituted with 1,2 or 3, R23;
alternatively, R9 and R10 together with the N atom to which they are attached form a
heterocarbocyclyl group optionally substituted with 1,2 or 3 R23;
Y is H, -CN, -NO2, -S(=O)2R11, or a guanidino protecting group;
R11 is C1-C6 alkyl, aryl, or NR12R13;
R12 and R13 are, independently, H, C1-C10 alkyl, carbocyclyl, heterocarbocyclyl, or an
amino protecting group;

alternatively, R12 and R13 together with the N atom to which they are attached
form a heterocarbocyclyl group;
Z is O, S, Se, or Te;
Q is -B(OH)2, -B(OR14)2, or a cyclic boronic ester wherein said cyclic boronic ester
contains from 2 to 20 carbon atoms, and, optionally, a heteroatom which can be
N,S,orO;
R14 is H, C1-C4 alkyl, cycloalkyl, cycloalkylalkyl, aryl, or aralkyl;
X is RAC(=O)-, RANHC(=O)-, RAS(=O)2-, RAOC(=O), RASC(O)-, or RA;
RA is C1-C20 alkyl optionally substituted with R20;
C2-C20 alkenyl optionally substituted with R20;
C2-C20 alkynyl optionally substituted with R20;
carbocyclyl optionally substituted with 1-5 R21; or
heterocarbocyclyl optionally substituted with 1-5 R21;
R20 is selected from the group consisting of:
-CN, halo, haloalkyl-, C1-C4 alkyl, C2-C4 alkenyl, C2-C4 alkynyl,
-CO2H, -C(O)CO2H, -C(=O)NH2, -C(=O)H, -S(=O)NH2, -S(=O)2NH2,
-OH, -SH, -NH2, -NH(alkyl), -N(alkyl)2, -NHC(=O)NH2,
-NHC(=O)R20a, -NHC(=O)OR20a, -OR20a, -SR20a, -S(=O)R20a, -S(=O)2R20a,
-S(=O)2-NHR20a, -SC(=O)R20a, -C(=O)R20a, -C(=O)NHR20a,
-C(=O)0-R20a, -NHS(=O)2R20a, -NHR20b, phthalimido,
-(O-alkyl)r-OH, -(O-alkyl)t-alkyl),
-OR20c, -SR20c, -O-alkyl-R20c, -S-alkyl-R20c, -S(=O)-R20c, -S(=O)2-R20c,
-S(=O)2-NHR20c, -SC(=O)R20c, -C(=O)R20c, -C(=O)OR20c, -C(=O)NHR20c,
carbocyclyl optionally substituted with 1-5 R21; and
heterocarbocyclyl optionally substituted with 1-5 R21;
R20 is C1-C20 alkyl. C2-C20 alkenyl, or C2-C20 alkynyl; wherein said alkyl, alkenyl, or
alkynyl is optionally substituted by one or more halo, OH, CN, C1-C4 alkyl,
C1-C4 alkoxy, C2-C8 alkoxyalkoxy, aryl, heteroaryl or -NHR20b;
R20b is an amino protecting group;
R20c is carbocyclyl optionally substituted with 1-5 R22; or
heterocarbocyclyl optionally substituted with 1-5 R22;
R21 is selected from the group consisting of:
C1-C20 alkyl, C2-C20 alkenyl, C2-C20 alkynyl, -OR21s, -SR21a,

-CN, halo, haloalkyl, -NH2, -NH(alkyl), -N(alkyl)2, -NHC(=O)O-alkyl,
-NHC(=O)alkyl, -COOH, -C(=O)O-alkyl, -C(=O)alkyl, -C(O)H,
-S(=O)-alkyl, -S(=O)2-alkyl, -S(=O)-aryl, -S(=O)2-aryl,
carbocyclyl optionally substituted with 1-5 R22, and
heterocarbocyclyl optionally substituted with 1-5 R22;
R21a is H, C1-C20 alkyl, C2-C20 alkenyl, C2-C20 alkynyl, carbocyclyl or
heterocarbocyclyl;
R22 is selected from the group consisting of:
C1-C10 alkyl, C2-C10 alkenyl, C2-C10 alkynyl, phenyl,
halo, haloalkyl, alkoxy, thialkoxy, amino, alkylamino, dialkylamino,
carboxyl, aIkyl-OC(=O)-, alkyKC(=O)-, aryl-OC(=O)-,
alkyl-OC(=O)NH-, aryl-OC(=O)NH-, alkyl-C(=O)NH-, alkyl-C(=O)O-,
(alkyl-O)r-alkyl, HO-(alkyl-O)ralkyl-, -OH, -SH, -CN, -N3, -CNO, -CNS,
alkyl-S(=O)-, alkyl-S(=O)2-, H2NS(=O)-, and H2NS(=O)2-;
R23 is selected from the group consisting of:
C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl, F, Cl, Br, I, haloalkyl, -NH2,
-NHR23a, -N(R23a)2 -N3, -NO2, -CN, -CNO, -CNS, -C(=O)OR23a, -C(=OR23a),
-OC(=O)R23a, -N(R23a)C(=O)R23a, -N(R23a)C(=O)OR23a, -C(=O)N(R23a)2,
ureido, -OR23a, -SR23a, -S(=O)-(C1-C6 alkyl), -S(=O)2-(C1-C6 alkyl),
-S(=O)aryl,-S(=O)2-aryl, -S(=O)2-N(R23a)2;
carbocyclyl optionally substituted with 1-5 R24; and
heterocarbocyclyl optionally substituted with 1-5 R24;
R23a is H or C1-C6 alkyl;
alternatively, two R23a may be combined, together with the N atom to which they are
attached, to form a 5 to 7 membered heterocyclic group; and
R24 is selected from the group consisting of:
C1-C4 alkyl, C2-C4 alkenyl, C2-C4 alkynyl, phenyl,
halo, haloalkyl, alkoxy, thialkoxy, amino, alkylamino, dialkylamino,
carboxyl, alkyl-OC(=O), alkyl-C(=O)-, aryl-OC(=O)-,
alkyl-OC(=O)NH-, aryl-OC(=O)NH-, alkyl-C(=O)NH-, alkyl-C(=O)O-,
(alkyl-O)s-alkyl, HO-(alkyl-O)r-alkyl-, -OH, -SH, -CN, -N3, -CNO, -CNS,
alkyl-S(=O)-, alkyl-S(=O)2-, H2NS(=O)-, and H2NS(=O)2-; and
r is 1,2,3,4,5,6,7, 8,9, or 10;

with the proviso that when Q is a 1,1,2,2-tetramethylethanediol boronic ester, then X is
not aralkyloxycarbonyl;
with the proviso that when Q is a 1,1,2,2-tetramethylethanediol boronic ester, and R1 is
cycloalkyl, then R2 is not-CH2CONH2; and
with the proviso that when X is RAC(=O)-, RA is a C4-C15 straight-chained alkyl
substituted with R20, and R20 is -CN, -CO2H, -C(=O)O-R20a, -NHS(=O)2R20a, -
NHC(=O)R20a, -NHR20b, or phthalimido; then R2 is not -
(CH2),CH2NHC(=NR4)NH-Y, wherein Y is H, -CN, -NO2, or a guanidino
protecting group.
[0029] In further embodiments, when R2 is -(CH2)oCH(R7)ZR8, e is 0, R7 is H,
R8 is C1-C10 alkyl and X is RAC(=O)-, then RA is not aminoalkyl-, alkylaminoalkyl-,
dialkylaminoalkyl-, or ureidoalkyl-.
[0030] In some embodiments, R1 can be C1-C4 alkyl, and in further
embodiments, R1 can be propyl, such as 2-propyl.
[0031] In some embodiments, R2 can be -(CH2)aCH2NHC(=NR4)NH-Y,
-(CH2)bCH2CONR5R6, -(CH2)cCH2N(R4)CONH2, -(CH2)dCH(R7)NR9R10, or
-(CH2)eCH(R7)ZR8.
[0032] In some embodiments, R2 is 3,4, or 5.
[0033] In some embodiments, R2 is -(CH2)aCH2NHC(=NR4)NH-Y and a is 2.
[0034] In some embodiments, R2 is -CH2CH2CH2NHC(=NR4)NH-Y.
[0035] In some embodiments, R2 is -(CH2)dCH(R7)NR9R10 and d is 0,1, or 2.
[0036] In some embodiments, R2 is -(CH2)dCH(R7)NR9R10 and d is 0.
[0037] In some embodiments, R2 is -(CH2)dCH(R7)NR9R10 and R9 is H.
[0038] In some embodiments, R2 is -(CH2)dCH(R7)NR9R10.
[0039] In some embodiments, R2 is -CH(R7)NR9R10.
[0040] In some embodiments, R2 is -CH2NH-C(=O)OCH2(C6H5).
[0041] In some embodiments, R2 is -(CH2)eCH(R7)ZR8 and e is 0,1, or 2.
[0042] In some embodiments, R2 is -(CH2)eCH(R7)ZR8 and e is 0.
[0043] In some embodiments, R2 is -(CH2)eCH(R7)ZR8.
[0044] In some embodiments, R2 is -CH(R7)ZR8.
[0045] In further embodiments, Z is O.
[0046] In further embodiments, Q has Formula (II-a):


wherein D, R15a, R15b, R15c, R15a, p and q are defined herein below.
[0047] In further embodiments, Q is B(OH)2 or a cyclic boronic ester wherein
said cyclic boronic ester contains from 6 to 10 carbon atoms and contains at least one
cycloalkyl moiety.
[0048] In further embodiments Q is B(OH)2.
[0049] In further embodiments Q is pmanediol boronic ester.
[0050] In further embodiments Q is bicyclohexyl-1,1'-diol boronic ester.
[0051] In further embodiments, Q is 1,2-dicyclohexyl-ethane-l,2-diol boronic
ester.
[0052] Alternatively, in some embodiments, Q is -B(OH)2, -B(OR14)2,

wherein:
R14, R15, R15b, R15c, R15d, W, Wl, p and q are as defined hereinbelow.
[0053] In further embodiments Q is:


W is a substituted or unsubstituted C4-C10 cycloalkyl ring.
[0054] In some embodiments, X is RAC(=O)-.
[0055] In some embodiments, X is RANHC(=O).
[0056] In some embodiments, X is RAS(O)2-
[0057] In some embodiments, RA is C1-C14 alkyl substituted by -(O-alkyl)rOH
or
-(O-alkyl)r(O-alkyl), wherein r is 1,2,3,4, or 5.
[0058] In some embodiments, RA is C1-C14 alkyl substituted by -(O-alkyl)r-OH
or
-(O-alkyl)r-(O-alkyl), wherein r is 1, 2 or 3.
[0059] In some embodiments, RA comprises at least one -CH2CH2O- group.
[0060] In some embodiments, RA is -CH2(OCH2CH2)rOCH3.
[0061] In some embodiments, RA is -CH2OCH2CH2OCH2CH2OCH3 or
-CH2OCH2CH2OCH3.
[0062] In some embodiments, RA is aryl or heteroaryl each optionally
substituted with 1-5 R21.
[0063] In some embodiments, RA is cycloalkyl or heterocycloalkyl each
optionally substituted with 1-5 R21.
[0064] In some embodiments, RA is C1-C20 alkyl; C2-C20 alkenyl; or C2-C20
alkynyl, each optionally substituted with R20.
[0065] In some embodiments, RA is C1-C20 alkyl; C2-C20 alkenyl; or C2-C20
alkynyl, each substituted with a carbocyclyl group or a heterocarbocyclyl group wherein
said carbocyclyl group or heterocarbocyclyl group is optionally substituted with 1,2 or
3 R21.
[0066] In some embodiments, RA is C1-C20 alkyl; C2-C20 alkenyl; or C2-C20
alkynyl, each substituted with an aryl group wherein said aryl group is optionally
substituted with 1,2 or 3 R21.
[0067] In some embodiments, RA is C1-C20 alkyl; C2-C20 alkenyl; or C2-C20
alkynyl, each substituted with an heteroaryl group wherein said heteroaryl group is
optionally substituted with 1,2 or 3 R21.

[0068] In some embodiments, RA is C1-C20 alkyl; C2-C20 alkenyl; or C2-C20
alkynyl, each substituted with an cycloalkyl group wherein said cycloalkyl group is
optionally substituted with 1,2 or 3 R21.
[0069] In some embodiments, RA is C1-C20 alkyl; C2-C20 alkenyl; or C2-C20
alkynyl, each substituted with an heterocycloalkyl group wherein said heterocycloalkyl
group is optionally substituted with 1,2 or 3 R21.
[0070] In some embodiments, RA is C1-C20 alkyl; C2-C20 alkenyl; or C2-C20
alkynyl, each optionally substituted with R20, wherein R20 is selected from CN, halo,
haloalkyl, -CO2H, -C(=O)CO2H, -C(=O)NH2, -C(=O)H, -S(O)NH2, S(O)2NH2, -OH,
-SH, -NH2, -NH(alkyl), -N(alkyl)2, -NHC(=O)NH2, -NHC(=O)R20a, -NHC(=O)R20a,
-OR20a, -SR20a, -S(O)R20a, -SCO)2R20a, -S(O)2-NHR20a, -SC(=O)R20a, -C(=O)R20a,
-C(=O)NHR20a, -C(=O)O-R20a, -NHS(O)2R20a, -NHR20b, phthalimido, -(O-alkyl),
-(O-alkyl)r-OH, -(O-alkyl)r-(O-alkyl), -OR20a, -SR20a, -O-alkyl-R20a, -S-alkyl-R20c,
-S(O)-R20a, -S(O)2R20a, -S(O)2-NHR20a, -SC(O)R20c, -C(=O)R20a, -C(O)OR20a,
and -C(=O)NHR20a.
[0071] In some embodiments, R2 is H and X is (O-alkyl)-(O-alkyl)r-(C1-C14
alkyl)-C(=O)- orHO-(alkyl-O)r-(C1-C14 alkyl -C(=O)-.
[0072] In some embodiments X is RAC(=O)- and RA is C4-C16 alkyl.
[0073] In some embodiments X is RAC(=O)- and RA is aryl optionally
substituted with 1-3 R21.
[0074] In some embodiments X is RAC(=O)- and RA is heterocarbocyclyl group
optionally substituted with 1-3 R21.
[0075] In some embodiments X is RAC(=O)-; RA is phenyl substituted with one
R21; and R21 is phenoxy.
[0076] In some embodiments X is RAC(O)-, RA is C1-C4 alkyl substituted with
R20, and R20 is aryl optionally substituted with 1-3 R21; and in yet further embodiments
aryl is substituted by at least one halo.
[0077] In some embodiments X is RAC(=O)-; RA is C1-C14 alkyl substituted with
R20; and R20 is -OR20a or-OR20c.
[0078] In some embodiments X is RAC(=O)-; RA is C1-C14 alkyl substituted with
R20; and R20 is heterocarbocyclyl optionally substituted with 1-3 R21.
[0079] In some embodiments X is RAS(O)2- and RA is C3-C16 alkyl.

[0080] In some embodiments the present invention provides compounds of
Formula (I) wherein the stereochemistry is of Formula (I-s):

or pharmaceutically acceptable salt form thereof.
[0081] In some embodiments, the present invention provides compounds of
Formula (I)
or pharmaceutically acceptable salt, stereoisomeric or tautomeric form thereof, wherein:
R1 is C1-C8 alkyl, C2-C8 alkenyl, C2-C8 alkynyl, or C3-C7 cycloalkyl;
R2 is H, -(CH2)aCH2NHC(=NR4)NH-Y, -(CH2)bCH2CONR5R6,
-(CH2)cCH2N(R4)CONH2, -(CH2)dCH(R7)NR9R10, or -(CH2)eCH(R7)ZR8;
a, b, and c are each, independently, 0,1,2,3,4,5, or 6;
d and e are each, independently, 0,1,2,3, or 4;
R4 is H or C1-C10alkyl;
R5 and R6 are each, independently, H, C1-C10 alkyl, carbocyclyl, heterocarbocyclyl, or
an amino protecting group;
alternatively, R5 and R6 together with the N atom to which they are attached form a
heterocarbocyclyl group;
R7 is H or C1-C10alkyl;
R8 is H, C1-C10 alkyl, alkyl-S(=O)2-, aryl-S(=O)2-, H2NS(=O)2-, -SO3H, or a protecting
group;
R9 is H, C1-C10 alkyl, carbocyclyl, or heterocarbocyclyl;

R10 is H, C1-C10 alkyl, carbocyclyl, heterocarbocyclyl, C1-C10 alkyl-C(=O)-,
carbocyclyl-C(=O)-, heterocarbocyolyl-C(=O)-, carbocyclylalkyl-C(=O)-,
heterocarbocyclylalkyl-C(=O)-, C1-C10 alkyl-S(=O)2-, carbocyclyl-S(=O)2-,
heterocarbocyclyl-S(=O)r, carbocycIylalkyl-S(=O)2-,
heterocarbocyclylalkyl-S(=O)2-, C1-C10 alkyl-NHC(=O)-,
carbocyclyl-NHC(=O)-, heterocarbocyclyl-NHC(=O)-,
carbocyclylalkyl-NHC(=O), heterocarbocyclylalkyl-NHC(=O)-,
C1-C10 alkyl-OC(=O)-, carbocyclyl-OC(=O)-, heterocarbocyclyl-OC(=O),
carbocyclylaIkyl-OC(=O)-, heterocarbocyclylalkyl-OC(=O)-, or an amino
protecting group; wherein R10 is optionally substituted with 1,2, or 3 R23;
alternatively, R9 and R10 together with the N atom to which they are attached form a
heterocarbocyclyl group;
Y is -H, -CN, -NO2, -S(=O)2R11, or a guanidino protecting group;
Ru is C1-C6 alkyl, aryl, or NR12R13;
R12and RI3are, independently, H, C1-C10 alkyl, carbocyclyl, heterocarbocyclyl, or an
amino protecting group;
alternatively, R12 and R13 together with the N atom to which they are attached form a
heterocarbocyclyl group;
Z is O, S,Se,orTe;
Q is -B(OH)2, -B(OR14)2, or a cyclic boronic ester wherein said cyclic boronic ester
contains from 2 to 20 carbon atoms, and, optionally, a heteroatom which can be
N, S, or O;
R14 is H, C1-C4 alkyl, cycloalkyl, cycloalkylalkyl, aryl, or aralkyl;
X is RAC(=O))-, RANHC(=O)-, RAS(=O)2-, RAOC(=O)-, RASC(=O)-, or RA;
RA is C1-C20 alkyl optionally substituted with R20;
C2-C20 alkenyl optionally substituted with R20;
C2-C20 alkynyl optionally substituted with R20;
carbocyclyl optionally substituted with 1-5 R21; or
heterocarbocyclyl optionally substituted with 1-5 R21;
R20 is selected from the group consisting of:
-CN, halo, haloalkyl-, C1-C4 alkyl, C2-C4 alkenyl, C2-C4 alkynyl,
-CO2H, -C(=O)CO2H, -C(=O)NH2, -C(=O)H, -S(=O)NH2, -S(=O)2NH2,
-OH, -SH, -NH2, -NH(alkyl), -N(alkyl)2, -NHC(=O)NH2,

-NHC(O)R20a, -NHC(=O)OR20a, -OR20a, -SR20a, -S(O)R20a, -S(=O)2R20a,
-S(=O)rNHR20a, -SC(=O)R20a, -C(=O)R20a, -C(=O)NHR20a,
-C(=O)O-R20a, -NHS(=O)2R20a, -NHR20a, phthalimido,
-(-O-alkyl)r, -O-alkyl-OH, -(O-alkyl)r-OH,
-OR20c, -SR20c, -O-alkyl-R20c, -S-alkyl-R20c, -S(O)-R20c, -S(=O)2-R20c,
-S(=O)2-NHR20c, -SC(=O)R200, -C(=O)R20c, -C(=O)OR20c, -C(=O)NHR20c,
carbocyclyl optionally substituted with 1-5 R21; and
heterocarbocyclyl optionally substituted with 1-5 R21;
R208 is C1-C20 alkyl, C2-C20 alkenyl, or C2-C20 alkynyl; wherein said alkyl, alkenyl, or
alkynyl is optionally substituted by one or more halo, C1-C4 alkyl, aryl,
heteroaryl or -NHR20b;
R20b is an amino protecting group;
R20c is carbocyclyl optionally substituted with 1-5 R22; or
heterocarbocyclyl optionally substituted with 1-5 R22;
R21 is selected from the group consisting of:
C1-C20 alkyl, C2-C20 alkenyl, C2-C20 alkynyl, C1-C20 alkoxy,
C1-C20 thialkoxy, -OH, -CN, halo, haloalkyl, -NH2, -NH(alkyl), -N(alkyl)2,
-NHC(=O)O-alkyl, -NHC(=O)alkyl, -C(=O)O-alkyl, -C(O)alkyl,
-S(=O)-alkyl, -S(=O)2-aIkyl, -S(=O))-aryl, -S(=O)2-aryl,
carbocyclyl optionally substituted with 1-5 R22; and
heterocarbocyclyl optionally substituted with 1-5 R22;
R22 is selected from the group consisting of:
C1-C10 alkyl, C2-C10 alkenyl, C2-C10 alkynyl, phenyl,
halo, haloalkyl, alkoxy, thialkoxy, amino, alkylamino, dialkylamino,
carboxyl, alkyl-OC(=O)-, alkyl-C(=O)-, aryl-OC(=O),
alkyl-OC(=O)NH-, aryl-OC(=O)NH-, alkyl-C(=O)NH-, alkyl-C(=O)O-,
(alkyl-O)r-alkyl, HO-(alkyl-O)ralkyK -OH, -SH, -CN, -N3, -CNO, -CNS,
alkyl-S(=O)-, alkyl-S(=O)r-, H2NS(=O)-, and H2NS(=O)2-;
R23 is selected from the group consisting of:
C1-C6 alkyl C2-C6 alkenyl, C2-C6 alkynyl, F, Cl, Br, I, haloalkyl, -NH2,
-NHR23a, -N(R23a), -N3, -NO2, -CN, -CNO, -CNS, -C(=O)OR23a, -C(=O)R23a,
-OC(=O)R23a, -N(R23a)C(=O)R23a, -C(=O)N(R23a)2 ureido, -OR23a, -SR23a,
-S(=O)2-(C1-C6 alkyl), -S(=O)2-aryl, and -S(=O)2-N(R23a)2;

R23a is H or C1-C6 alkyl;
alternatively, two R23a may be combined, together with the N atom to which they are
attached, to form a 5 to 7 membered heterocyclic group; and
r is 2,3,4,5,6,7,8, 9, or 10; and
with the proviso that when Q is a 1,1,2,2-tetramethylethanediol boronic ester, then X is
not aralkyloxyparbonyl;
with the proviso that when when Q is a 1,1,2,2-tetramethylethanediol boronic ester, and
R1 is cycloalkyl, then R2 is not -CH2CONH2; and
with the proviso that when X is RAC(=O)-, RA is a C4-C15 straight-chained alkyl
substituted with R20, and R20 is -CN, -CO2H, -C(=O)0-R20a, -NHS(=O)2R20a, -
NHC(=O)R20a, -NHR20b, or phthalimido; then R2 is not -
(CH2)aCH2NHC(=NR4)NH-Y, wherein Y is H, -CN,
-NO2, or a guanidino protecting group.
[0082] In some embodiments, R1 is 2-propyl; R2 is H, -
(CH2)aCH2NHC(=NR4)NH-Y, (CH2)bCH2CONR5R6, -(CH2)cCH2N(R4)CONH2, -
(CH2)dCH(R7)NR9R10, or -(CH2)eCH(R7)ZR8; Q is -B(OH)2 or pinanediol boronic ester;
X is RAC(=O)-; and RA is C4-C16 alkyl; aryl optionally substituted with 1-3 R21; or
heterocarbocyclyl group optionally substituted with 1-3 R21.
[0083] In some embodiments, the present invention provides compounds of
Formula (I)

or pharmaceutically acceptable salt, stereoisomers or tautomeric form thereof, wherein:
R1 is C1-C8 alkyl;
R2 is -(CH2)aCH2NHC(=NH)NH-Y, -(CH2)cCH2NHCONH2, -(CH2)dCH(R7)NR9R10,
or-(CH2)eCH(R7)ZR8;
a is 1,2,3,4, or 5;
c is 1,2,3,4, or 5;
d is 0,1, or 2;

e is 0,1, or 2;
R7 is H or methyl;
R8 is H, C1-C10 alkyl, -S(=O)ralkyl, -S(=O)2-aryl, -S(=O)rNH2 -SO3H, or a protecting
group;
Y is -H, -CN, -NO2, -S(=O)2R11, or a guanidino protecting group;
R9 is H, C1-C10 alkyl, carbocyclyl, or heterocarbocyclyl;
R10 is H, C1-C10 alkyl, carbocyclyl, heterocarbocyclyl, C1-C10 alkyl-C(=O)-,
carbocyclyl-C(=O)-, heterocarbocyclyl-C(=O)-, carbocyclylalkyl-C(=O)-,
heterocarbocyclylaIkyl-C(=O)-, C1-C10 alkyl-S(=O)2-, carbocyclyl-S(=O)2-,
heterocarbocyclyl-S(=O)2-, carbocyclylalkyl-S(=O)2-,
heterocarbocycIylalkyl-S(=O)2-, C1-C10 alkyl-NHC(=O)-,
carbocyclyl-NHC(=O)-,heterocarbocyclyl-NHC(=O)-,
carbocyclylalkyl-NHC(=O)-,heterocarbocycIylalkyl-NHC(=O)-,
C1-C10 alkyl-OC(=O)-, carbocyclyl-OC(=O)-, heterocarbocyclyl-OC(=O)-,
carbocyclylalkyl-OC(=O)-, heterocarbocyclylalkyl-OC(=O)-, or an amino
protecting group; wherein R10 is optionally substituted with 1,2 or 3 R23;
alternatively, R9 and R10 together with the N atom to which they are attached form a
heterocarbocyclyl group;
R11 is C1-C6 alkyl, aryl, or NR12R13;
R12 and R13 are, independently, H, C1-C10 alkyl, carbocyclyl, heterocarbocyclyl, or an
amino protecting group;
alternatively, R12 and R13 together with the N atom to which they are attached form a
heterocarbocyclyl group;
Z is O or S;
Q is -B(OH)2, -B(OR14)2, or a cyclic boronic ester wherein said cyclic boronic ester
contains from 6 to 20 carbon atoms and contains at least one cycloalkyl moiety;
R14 is H, C1-C4 alkyl, or cycloalkyl;
X i1s RAC(=O)-, RANHC(=O)-, RAS(=O)r, RAOC(=O), RASC(=O)-, or RA;
RA is C1-C20 alkyl optionally substituted with R20;
C2-C20 alkenyl optionally substituted with R20;
C2-C20 alkynyl optionally substituted with R20;
carbocyclyl optionally substituted with 1-5 R21; or
heterocarbocyclyl optionally substituted with 1-5 R21;

R20 is selected from the group consisting of:
-CN, halo, haloalkyl-, C1-C4 alkyl, C2-C4 alkenyl, C2-C4 alkynyl,
-CO2H, -C(O)CO2H, -C(=O)NH2, -C(=O)H, -S(=O)NH2, -S(=O)2NH2,
-OH, -SH, -NH2, -NH(alkyl), -N(alkyl)2, -NHC(=O)NH2,
-NHC(=O)R20a, -NHC(O)OR20a, -OR20a -SR20a, -S(=O)R20a, -S(=O)2R20a,
-S(=O)2-NHR20a, -SC(=O)R20a , -C(=O)R20a, -C(=O)NHR20a,
-C(=O)O-R20a, -NHS(=O)2R20, -NHR20b, phthalimido,
-(O-alkyl)r, -O-alkyl-OH, -(O-alkyl)2-OH,
-OR20c, -SR20c, -O-alkyl-R20c, -S-alkyl-R20c, -S(=O)-R20c, -S(=O)2-R20c,
-S(=O)2-NHR20c, -SC(=O)R20c, -C(=O)R20c, -C(=O)OR20c, -C(=O)NHR20c,
carbocyclyl optionally substituted with 1-5 R21; and
heterocarbocyclyl optionally substituted with 1-5 R21;
R20a is C1-C20 alkyl, C2-C20 alkenyl, or C2-C20 alkynyl; wherein said alkyl, alkenyl, or
alkynyl is optionally substituted by one or more halo, C1-C4 alkyl, aryl,
heteroarylor-NHR20b;
R20b is an amino protecting group;
R20b is carbocyclyl optionally substituted with 1-5 R22; or
heterocarbocyclyl optionally substituted with 1-5 R22;
R21 is selected from the group consisting of:
C1-C20 alkyl, C2-C20 alkenyl, C2-C20 alkynyl, C1-C20 alkoxy,
C1-C20 thialkoxy, -OH, -CN, halo, haloalkyl, -NH2, -NH(alkyl), -N(alkyl)2,
-NHC(=O)O-alkyl, -NHC(=O)alkyl, -C(=O)O-alkyl, -C(=O)alkyl,
-S(=O)-alkyl, -S(=O)2-alkyl, -S(=O)-aryl, -S(=O)2-aryl,
carbocyclyl optionally substituted with 1-5 R22, and
heterocarbocyclyl optionally substituted with 1-5 R22;
R22 is selected from the group consisting of:
C1-C10 alkyl, C2-C10 alkenyl, C2-C10 alkynyl, phenyl,
halo, haloalkyl, alkoxy, thialkoxy, amino, alkylamino, dialkylamino,
carboxyl, alkyl-OC(=O)-, alkyl-C(=O), aryl-OC(=O)-,
alkyl-OC(=O)NH-, aryl-OC(=O)NH-, alkyl-C(=O)NH-, alkyl-C(=O)O-,
(alkyl-O)ralkyl, HO-(alkyl-O)r-alkyl-, -OH, -SH, -CN, -N3, -CNO, -CNS,
alkyl-S(=O)-, alkyl-S(=O)2-, H2NS(=O)-, and H2NS(=O)r;
R23 is selected from the group consisting of:

C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl, F, Cl, Br, I, haloalkyl, -NH2,
-NHR23a, -NCR23a, -N3, -NO2, -CN, -CNO, -CNS, -C(=O)OR23a, -C(=O)R23a,
-OC(=O)R23a, -N(R23a)C(=O) R23a, -C(=O)N(R23a)2, ureido, -OR23a, -SR23a,
-S(=O)2-(C1-C6 alkyl), -S(=O)2-aryl, and -S(=O)2-N(R23a)2
R23a is H or C1-C6 alkyl;
alternatively, two R23a may be combined, together with the N atom to which they are
attached, to form a 5 to 7 membered heterocyclic group; and
r is 2,3,4,5,6,7,8,9, or 10;
with the proviso that when X is RAC(=O), RA is a C4-C15 straight-chained alkyl
substituted with R20, and R20 is -CN, -CO2H, -C(=O)O-R20a, -NHS(=O)2R20a, -
NHC(=O)R20a, -NHR20a, or phthalimido; then R2 is not -
(CH2),CH2NHC(=NR4)NH-Y, wherein Y is H, -CN, -NO2, or a guanidino
protecting group.
[0084] In further embodiments, the present invention provides compounds of
Formula (I)
or pharmaceutically acceptable salt, stereoisomeric or tautomeric form thereof, wherein:
R1 is C1-C4 alkyl;
R2 is -(CH2)aCH2NHC(=NH)NH-Y, -(CH2)cCH2NHCONH2, or -(CH2)dCH(R7)NR9R10;
a is 1,2, or 3;
c is 1,2, or 3;
d is 0 or 1;
R7 is H or methyl;
R9 is H or C1-C10alkyl;
R10 is H, C1-C10 alkyl, or an amino protecting group;
Y is H, CN, or NO2;

Q is -B(OH)2, pinanediol boronic ester, bicyclohexyl-1,1'-diol boronic ester, or 1,2-
dicyclohexyl-ethane-l,2-diol boronic ester;
X is RAC(=O)-, RANHC(=OK RAS(=O)2-, RAOC(=Oh RASC(=O)-, or RA;
RA is C1-C20 alkyl optionally substituted with R20;
C2-C20 alkenyl optionally substituted with R20;
C2-C20 alkynyl optionally substituted with R20;
carbocyclyl optionally substituted with 1-5 R21; or
heterocarbocyclyl optionally substituted with 1-5 R21;
R20 is selected from the group consisting of:
-CN, halo, haloalkyl-, C1-C4 alkyl, C2-C4 alkenyl, C2-C4 alkynyl,
-CO2H, -C(=O)CO2H, -C(=O)NH2, -C(=O)H, -S(=O)NH2, -S(=O)2NH2,
-OH, -SH, -NH2, -NH(alkyl), -N(alkyl)2, -NHC(=O)NH2,
-NHC(=O)R20a, -NHC(=O)OR20a, -OR20a, -SR20a, -S(=O)R20a, -S(=O)2R20a,
-S(=O)2NHR20a, -SC(=O)R20a, -C(=O)R20a, -C(=O)NHR20a,
-C(=O)O-R20a, -NHS(=O)2R20a, -NHR20b, phthalimido,
-(O-alkyl)r, -O-alkyl-OH, -(O-alkyl)r-OH,
-OR20c, -SR20c, -O-alkyl-R200, -S-alkyl-R20c, -S(=O)-R20a, -S(=O)2-R20a,
-S(=O)2-NHR20c, -SC(=O)R20c, -C(=O)R20c, -C(=O)OR20c, -C(=O)NHR20a,
carbocyclyl optionally substituted with 1-5 R21; and
heterocarbocyclyl optionally substituted with 1-5 R21;
R20a is C1-C10 alkyl, C2-C20 alkenyl, or C2-C20 alkynyl; wherein said alkyl, alkenyl, or
alkynyl is optionally substituted by one or more halo, C1-C4 alkyl, aryl,
heteroaryl or -NHR20b;
R20b is an amino protecting group;
R20c is carbocyclyl optionally substituted with 1-5 R22; or
heterocarbocyclyl optionally substituted with 1-5 R22;
R21 is selected from the group consisting of:
C1-C20 alkyl, C2-C20 alkenyl, C2-C20 alkynyl, C1-C20 alkoxy,
C1-C20 thialkoxy, -OH -CN, halo, haloalkyl, -NH2, -NH(alkyl), -N(alkyl)2,
-NHC(=O)O-alkyl, -NHC(=O)alkyl, -C(=O)O-alkyl, -C(=O)alkyl,
-S(=O)-alkyl, -S(=O)2-alkyl, -S(=O)-aryl, -S(=O)2-aryl,
carbocyclyl optionally substituted with 1-5 R22, and
heterocarbocyclyl optionally substituted with 1-5 R22;

R is selected from the group consisting of:
C1-C10 alkyl, C2-C10 alkenyl, C2-C10 alkynyl, phenyl,
halo, haloalkyl, alkoxy, thialkoxy, amino, alkylamino, dialkylamino,
carboxyl, alkyl-OC(O)-, alkyl-C(=O)-, aryl-OC(=O)-
alkyl-OC(=O)NH-, aryl-OC(=O)NH-, alkyl-C(=O)NH-, alkyl-C(=O)O-,
(alkyl-O)r-alkyl, HO-(alkyl-O)r-alkyl-, -OH, -SH, -CN, -N3, -CNO, -CNS,
alkyl-S(=O)-, alkyl-S(=O)2-, H2NS(=O), and H2NS(=O)2-; and
r is 2,3,4, or 5;
with the proviso that when X is RAC(=O)-, RA is a C4-C15 straight-chained alkyl
substituted with R20, and R20 is -CN, -CO2H, -C(=O)O-R20a, -NHS(=O)2R20a, -
NHC(=O)R20a, -NHR20a, or phthalimido; then R2 is not -
(CH2)aCH2NHC(=NR4)NH-Y, wherein Y is H, -CN, or -NO2,
[0085] In yet further embodiments, the present invention provides compound of
Formula (I) or pharmaceutically acceptable salt, stereoisomers; or tautomeric form
thereof, wherein:
R1 is C1-C6 alkyl, C2-C6 alkenyl, C2-C6, alkynyl, or C3-C7 cycloalkyl;
R2 is -CH2NH2 or -CH2NR9R10;
R9 is H or C1-C10alkyl;
R10 is H, C1-C10 alkyl, carbocyclyl, heterocarbocyclyl, C1-C10 alkyl-C(=O)-,
carbocycIyl-C(=O)-, heterocarbocycIyl-C(=O)-, carbocyclylalkyl-C(=O)-,
heterocarbocyclylalkyl-C(=O)-, C1-C10 alkyl-S(=O)2-, carbocyclyl-S(=O)2-,
heterocarbocyclyl-S(=O)r, carbocyclylalkyl-S(=O)2-,
heterocarbocyclylalkyl-S(=O)2-, C1-C10 alkyl-NHC(=O)-,
carbocyclyl-NHC(=O)-, heterocarbocyclyl-NHC(=O)-,
carbocyclylalkyl-NHC(=O)-,heterocarbocyclylalkyl-NHC(=O)-,
C1-C10 alkyl-OC(=O)-, carbocyclyl-OC(=O), heterocarbocyclyl-OC(=O)-,
carbocycrylalkyl-OC(=O)-, heterocarbocyclylalkyl-OC(=O)-, or an amino
protecting group; wherein R10 is optionally substituted with 1,2 or 3, R23;
alternatively, R9 and R10together with the N atom to which they are attached form a
heterocarbocyclyl group;

Q is -B(OH)2, -B(OR14)2, or a cyclic boronic ester wherein said cyclic boronic ester
contains from 2 to 20 carbon atoms, and, optionally, a heteroatom which can be
N, S, or O;
R14 is H, C1-C4 alkyl, cycloalkyl, cycloalkylalkyl, aryl, or aralkyl;
X is RAC(=O)-, RANHC(=O), RAS(=O)r, RAOC(=O)-, RASC(O)-, or RA;
RA is C1-C20 alkyl optionally substituted with R20;
C2-C20 alkenyl optionally substituted with R20;
C2-C20 alkynyl optionally substituted with R20;
carbocyclyl optionally substituted with 1-5 R21; or
heterocarbocyctyl optionally substituted with 1-5 R21;
R20 is selected from the group consisting of:
-CN, halo, haloalkyl-, C1-C4 alkyl, C2-C4 alkenyl, C2-C4 alkynyl,
-CO2H, -C(=O)CO2H, -C(=O)NH2, -C(=O)H, -S(=O)NH2, -S(=O)2NH2,
-OH, -SH, -NH2, -NH(alkyl), -N(alkyl)2, -NHC(=O)NH2,
-NHC(=O)R20a, -NHC(=O)OR20a, -OR208, -SR20a, -S(=O)R20a, -S(=O)2R20a,
-S(=O)2-NHR20a, -SC(=O)R20a, -C(=O)R20a, -C(=O)NHR20a,
-C(=O)O-R20a, -NHS(=O)2R20a, -NHR20b, phthalimido,
-(O--alkyl)r, -O-alkyl-OH, -(O--alkyl)rOH,
-OR20c, -SR20c, -O-alkyl-R20c, -S-alkyl-R20c, -S(=O)-R20c, -S(=O)2-R20a,
-S(=O)2-NHR20c, -SC(=O)R20c, -C(=O)R20c, -C(=O)OR20c, -C(=O)NHR20c,
carbocyciyl optionally substituted with 1-5 R21; and
heterocarbocyciyl optionally substituted with 1-5 R21;
R20 is C1-C20 alkyl, C1-C20 alkenyl, or C2-C20 alkynyl; wherein said alkyl, alkenyl, or
alkynyl is optionally substituted by one or more halo, C1-C4 alkyl, aryl,
heteroaryl or -NHR20b;
R20b is an amino protecting group;
R20c is carbocyciyl optionally substituted with 1-5 R22; or
heterocarbocyciyl optionally substituted with 1-5 R22;
R21 is selected from the group consisting of:
C1-C20 alkyl, C2-C20 alkenyl, C2-C20 alkynyl, C1-C20 alkoxy,
C1-C20 thialkoxy, -OH -CN, halo, haloalkyl, -NH2, -NH(alkyl), -N(alkyl)2,
-NHC(=O)O-alkyl, -NHC(=O)alkyl, -C(=O)O-alkyl, -C(=O)alkyl,
-S(=O)alkyl, -S(=O)2-alkyl, -S(=O)aryl, -S(=O)2-aryl,

carbocyclyl optionally substituted with 1-5 R22, and
heterocarbocyclyl optionally substituted with 1-5 R22;
R21 is selected from the group consisting of:
C1 -C10 alkyl, C1C10 alkenyl, C2-C10 alkynyl, phenyl,
halo, haloalkyl, alkoxy, thialkoxy, amino, alkylamino, dialkylamino,
carboxyl, alkyl-OC(=O)-, alkyl-C(=O)-, aryl-OC(=O)-,
alkyl-OC(=O)NH-, aryl-OC(K))NH-, alkyl-C(=O)NH-, alkyl-C(=O)O-,
(alkyl-O)r-alkyl, HO-(alkyl-O)r-alkyl-, -OH, -SH, -CN, -N3, -CNO, -CNS,
alkyl-S(=O)-, alkyl-S(=O)2-, H2NS(=O), and H2NS(=O)2-;
R23 is selected from the group consisting of:
C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl, F, CI, Br, I, haloalkyl, -NH2,
-NHR23a, -NCR23a)2 -N3, -NO2, -CN, -CNO, -CNS, -C(=O)OR23a, -C(=O)R23a,
-OC(=O)R23a, -N(R23a)C(=O) R23a, -C(=O)N(R23a)2, ureido, -OR23a, -SR23a,
-S(=O)2-(C1-C6 alkyl), -S(=O)2-aryl, and -S(=O)-N(R23a)2;
R23a is H or C1-C6 alkyl;
alternatively, two R23a may be combined, together with the N atom to which they are
attached, to form a 5 to 7 membered heterocyclic group; and
r is 2, 3,4, or 5.
[0086] In yet further embodiments, the present invention provides compounds of
Formula (I) or pharmaceutically acceptable salt, stereoisomeric or tautomeric form
thereof, wherein:
R1 is C1-C8 alkyl, C2-C8 alkenyl, C2-C8 alkynyl, or C3-C7 cycloalkyl;
R2 is H;
Q is -B(OH)2, -B(OR14)2, or a cyclic boronic ester wherein said cyclic boronic ester
contains from 2 to 20 carbon atoms, and, optionally, a heteroatom which can be
N,S, or O;
R14 is H, C1-C4 alkyl, cycloalkyl, cycloalkylalkyl, aryl, or aralkyl;
X is RAC(=OH RANHC(=O)-, RAS(=O)2-, RAOC(=O)- RASC(=O)-, or RA;
RA is C1-C20 alkyl optionally substituted with R20;
C2-C20 alkenyl optionally substituted with R20;
C2-C20 alkynyl optionally substituted with R20;
carbocyclyl optionally substituted with 1-5 R22; or

heterocarbocyclyl optionally substituted with 1-5 R22;
R20 is selected from the group consisting of:
-OR20a, -SR20a, -S(=O)R20a, -S(=O)2R20a, -S(=O)2-NHR20a, -SC(=O)R20a,
-C(=O)R20a, -C(=O)NHR20a, -C(=O)O-R20a, phthalimido,
-(O-alkyl)r, -O-alkyl-OH, -(O-alkyl)rOH,
-OR20c, -SR20c, -O-alkyl-R20c, -S-alkyl-R20c, -S(=O)-R20c, -S(=O)2-R20c,
-S(=O)2-NHR20c, -SC(=O)R20c, -C(=O)R20c, -C(=O)OR20c, -C(=O)NHR20c,
carbocyclyl optionally substituted with 1-5 R22; and
heterocarbocyclyl optionally substituted with 1-5 R22;
R20 is C1-C20 alkyl, C2-C20 alkenyl, or C2-C20 alkynyl; wherein said alkyl, alkenyl, or
alkynyl is optionally substituted by one or more halo, C1-C4 alkyl, aryl,
heteroaryl or-NHR20b;
R20c is carbocyclyl optionally substituted with 1-5 R22; or
heterocarbocyclyl optionally substituted with 1-5 R22;
R22 is selected from the group consisting of:
C1-C10 alkyl, C2-C10 alkenyl, C2-C10 alkynyl, phenyl,
halo, haloalkyl, alkoxy, thialkoxy, amino, alkylamino, dialkylamino,
carboxyl, alkyl-OC(=O)-, alkyl-C(=O)-, aryl-OC(=O)-,
alkyl-OC(=O)NH-, aryl-OC(=O)NH-, alkyl-C(=O)NH-, alkyl-C(=O)O-,
(alkyl-0)r-alkyl, HO-(alkyl-O)r-alkyl-, -OH, -SH, -CN, -N3, -CNO, -CNS,
alkyl-S(=O)-, alkyl-S(=O)2-, H2NS(=O)-, and H2NS(=O)2-; and
r is 2,3,4,5,6,7,8,9, or 10.
[0087] In yet further embodiments:
X is RAC(=O)-, RANHC(=O), RAS(O)2-, or RA; RA is C1-C14 alkyl optionally
substituted with R20; R20 is -(O-alkyl)r-OH or -(O--alkyl)r-O-alkyl); and r is 1,2,3,4, or
5. In further embodiments, the O-alkyl is methoxy, ethoxy, or propoxy.
[0088] In yet further embodiments, the present invention provides compounds of
Formula (I) or pharmaceutically acceptable salts, stereoisomeric or tautomeric forms
thereof, wherein:
R1 is 2-propyl;
R2 is -CH2CH2CH2NHC(=NH)NH-NO2, -CH2CH2CH2NHC(=O)NH2, -CH(CH3)OH,
-CH2CONH2, -CH2NH2, or-CH2NR9R10;

R9 is H;
R10 is methyl-C(=O), ethyl-C(=O)-, propyl-C(=O)-, butyl-C(=O)-, pentyl-C(=O)-,
2-(ethoxycarbonyl)ethy]-C(=O)-, 4-methyl-phenyl-C(=O)-, cyclopropyl-C(=O)-,
4-fluoro-phenyl-C(=O)-, 4-H2NSO2-phenyl-C(=O)-, 4-H3CSO2-pbenyl-C(=O)-,
4-phenyl-phenyl-C(=O)-, 3,4-dimethoxy-beiizyl-C(=O)-, 3-pyridinyl-C(=O)-,
2-(hydroxy)-pyridin-3-yl-C(=O)-, 6-(morpholino)-pyridin-3-yl-C(=O),
2-(pyridin-4-yl)thiazol-4-yl-C(=O)-, 2-pyrazinyl-C(=O)-,
2,5-dimethyl-pyrazolyl-C(=O)-,N-methyl-2-pyrrolyl-C(=O)-,
2-pyrrolidinyl-C(=O)-, 2-thiophenyl-C(=O)-, 5-isoxazolyl-C(=O)-,
4-(tetrazol-5-yl) phenyl-C(=O)-, (5-tetrazolyl)CH2-C(=O)-,
N-H3CSO2-piperidinyl-C(=O)-, butyl-OC(=O)-, (benzyl)-OC(=O)-,
(9-fluorenylmethyl)-OC(=O), pentyl-NHC(=O), propyl-NHC(=O)-,
phenyl-NHC(=O)-, 4-methyl-phenyl-NHC(=O)-, methyl-S(=O)2-,
4-fluoro-phenyl-S(=O)2-, 4-cyano-phenyl-S(=O)2-,
1-methyl-imidazol-4-yl-S(=O)2, 2-thiophenyl-S(=O)2-,
(4-methyl-phenyl)-NHC(=O)NH-S(=O)2-,and
(4-methyl-phenyl)-S(=O)2NHC(=O),
alternatively, R9 and R10 together with the N atom to which they are attached form
pyrrolyl or pyrazolyl;
Q is -B(OH)2, pinanediol boronic ester, bicyclohexyl-1,1'-diol boronic ester, or 1,2-
dicyclohexyl-ethane-l,2-diol boronic ester;
X is RAC(=O)-, RANHC(=O), RAS(=O)2-, or RAOC(=O)-;
RAis CH3-, C2H5-,C3H7-,C4H9-, C5H11, C6H13-, C7H15-, C8H17-, 0,11,9-, C10H21-,
C11H23-, C12H25-, C13H27-, adamantyl-, bicycloheptanyl-,
C1-3 alky] substituted with R20;
C2-10 alkenyl substituted with R20;
cyclopropyl substituted with 0-3 R21;
cyclopenryl substituted with 0-2 R21;
cyclohexyl substituted with 0-2 R21;
phenyl substituted with 0-3 R21;
naphthyl- substituted with 0-2 R21;
pyrazinyl substituted with 0-1 R21;
quinolinyl substituted with 0-1R21;

imidazolyl substituted with 0-1R21;
tetrahydrofuranyl substituted with 0-1 R21;
oxothiazolidinyl substituted with 0-1 R21;
benzothiazolyl substituted with 0-1R21;
thiazolyl substituted with 0-2 R21;
furanyl substituted with 0-2 R21;
pyrrolidinyl substituted with 0-1R21;
piperidinyl substituted with 0-1R21;
piperazinyl substituted with 0-1 R21; or
pyridinyl substituted with 0-1R21;
R20 is selected from the group consisting of:
hydroxy-, methoxy-, ethoxy-, propoxy-, butoxy-, pentoxy-, hexyloxy-,
heptyloxy-, octyloxy-, methoxyethoxy-, methoxyethoxyethoxy-,
methyl-S-, ethyl-S-, octyl-S-, methyl-C(=O)S-, (acetylamino)methyl-S-,
amino-, methylamino-, dimethylamino-, methyl-C(=O)-, phenyl-C(=O),
(H3CSO2)phenyl-C(=O) thiophenyl-C(=O)-, methyl-OC(=O)-, ethyl-OC(=O)-,
butyl-OC(=O)NH-, methyl-C(=O)NH-, methoxyethoxy-methyl-C(=O)NH-,
H2NC(=O)-, methyl-NHC(=O)-. ethyl-NHC(=O)-, propyl-NHC(=O)-,
phenyl-NHC(=O) H2NC(O)NH-, H2NS(=O)2-, octyl-S(=O)2-,
phenyl-S(=O)2-, methylphenyl-S(=O)2-, thiophenyl-S(=O)2-, cyclopentyl-,
cyclohexyl-, cycloheptyl-, adamantyl-, bicycloheptanyl-, cyclopentenyl-,
phenyl-, methoxy-phenyl-, methyl-phenyl-, dimethyl-phenyl-, ethyl-phenyl-,
propyl-phenyl-, butyl-phenyl-, fluoro-phenyl-, difluoro-phenyl-, chloro-phenyl-,
bromo-phenyl-, iodo-phenyl-, dimethylamino-phenyl-, cyclohexyloxy-,
2-isopropyl-5-methyl-cyclohexyloxy-, naphthyl-, methoxynaphthyl-,
naphthyloxy-, phenoxy-, (methyl-phenyl)oxy-, (ethyl-phenyl)oxy-,
(propyl-phenyl)oxy-, (butyl-phenyl)oxy-, (fluoro-phenyl)oxy-,
(chloro-phenyl)oxy-, (bromo-phenyl)oxy-, naphthyl-S-, benzyl-S-,
(methyl-phenyl)methyl-S-, pyrimidinyl-S-, piperidinyl-, N-methyl-piperidinyl-,
N-propyl-piperidinyl-, phthalimido-, thiophenyl-, methyl-thiophenyl-,
imidazolyl-, furnayl-, tetrazolyl-, oxopyrrolidinyl-, indolyl-, and
methyl-indolyl-; and
R21 is selected from the group consisting of:


methyl-, ethyl-, propyl-, butyl-, pentyl-, hexyl-, heptyl-, ethenyl-, propenyl-,
butenyl-, methoxy-, ethoxy-, propoxy-, phenoxy-, fluoro-, chloro-, bromo-,
methyl-C(=O)-, butyl-OC(=O)-, butyl-OC(=O)NH-, phenyl-, methoxyphenyl-,
fluorophenyl-, chlorophenyl-, bromophenyl-, pyrrolyl-, and pyridinyl-.
[0089] It is appreciated that certain features of the invention, which are, for
clarity, described in the context of separate embodiments, may also be provided in
combination in a single embodiment. Conversely, various features of the invention
which are, for brevity, described in the context of a single embodiment, may also be
provided separately or in any suitable subcombination.
[0090] As used herein, the phrase "boronic acid" refers to a compound
containing a B(OH)2 moiety. In some embodiments, boronic acid compounds can form
oligomeric anhydrides by dehydration of the boronic moiety. For example, Snyder, et
al., J. Am. Chem. Soc, 1958,80,3611 report oligomeric arylboronic acids. Thus, unless
otherwise indicated, "boronic acid", or a chemical formula containing a -B(OH)2
moiety, is intended to encompass free boronic acids, oligomeric anhydrides, including
but not limited to, dimers, timers, tetramers, and mixtures thereof.
[0091] As used herein, "boronic acid anhydride" or "boronic anhydride" refers
to a compound formed by the combination of two or more molecules of a boronic acid
compound of Formula (I), with loss of one or more water molecules from the boronic
acid moieties. When contacted with water, the boronic acid anhydride compound can be
hydrated to release free boronic acid compound. In some embodiments, the boronic acid
anhydride structure can contain two, three, four, or more boronic acid units and can have
a cyclic or linear configuration. In some embodiments, the boronic acid anhydride
compound exists substantially in a single oligomeric form; however, boronic acid
anhydrides also encompass mixtures of different oligomeric boronic acid anhydride as
well as free boronic acids.
[0092] Non-limiting examples of boronic acid anhydrides of the invention
include compounds of Formula (IT) and (III) where G is a moiety of Formula (TV) and t
is 0 to 10 or 1,2, 3, or 4.


[0093] In some embodiments, at least about 80% of boronic acid present in a
boronic acid anhydride compound exists in a single oligomeric anhydride form. In
further embodiments, at least about 85, about 90, about 95, or about 99 % of the boronic
acid present in the boronic acid anhydride exists in a single oligomeric anhydride form.
In some embodiments, the boronic acid anhydride compound consists essentially of a
single oligomeric boronic acid anhydride. In yet further embodiments, the boronic acid
anhydride compound consists of a single oligomeric boronic acid anhydride. In further
embodiments, the boronic acid anhydride compound contains a boroxine of Formula
(III), wherein t is 1.
[0094] Boronic acid anhydride compounds can be prepared from the
corresponding boronic acid compound by exposure to dehydrating conditions, including,
for example, crystallization, lyophilization, exposure to heat, and/or exposure to a
drylng agent Some suitable crystallization solvents include ethyl acetate,
dichloromethane, hexanes, ether, benzene, acetonitrile, ethanol, and mixtures thereof.

[0095] As used herein, the phrase "boronic ester" or "bororiic acid ester" refers
to an ester derivative of a boronic acid compound. As used herein, "cyclic boronic ester"
is intended to mean a stable cyclic boronic moiety of general formula -B(OR)(OR)
wherein the two R substituents are linked together forming a cyclic moiety (e.g., 3- to
10-membered cycloalkyl group) optionally further substituted with one or more
substituents or fused with (sharing at least one bond) one or more further carbocyclyl or
heterocarbocyclyl groups. The cyclic boronic ester can contain from 2 to 20 carbon
atoms, and optionally, a heteroatom which can be N, S, or O. Cyclic boronic esters are
well known in the art Examples of cyclic boronic esters include, but are not limited to,
pinanediol boronic ester, pinacol boronic ester, 1,2-ethanediol boronic ester, 1,3-
propanediol boronic ester, 1,2-propanediol boronic ester, 2,3-butanediol boronic ester,
1,1,2,2-tetramethylethanediol boronic ester, 1,2-diisopropylethanediol boronic ester,
5,6-decanediol boronic ester, 1,2-dicyclohexylerhanediol boronic ester, bicyclohexyl-
1,1'-diol, diethanolamine boronic ester, and 1,2-diphenyl-l,2-ethanediol boronic ester.
[0096] In some embodiments, the "cyclic boronic ester" has Formula (II-a):
wherein:
D is absent, O, S, NR16 or CR15eR15f;
R15a, R15b, R15c, R15d, R15e, R15f are each, independently, H, C1-C10 alkyl, C3-C7
cycloalkyl, aryl or heteroaryl, wherein said C1-C10 alkyl, C3-C10 cycloalkyl, aryl or
heteroaryl are each optionally substituted by 1,2,3 or 4 halo, C1-C4 alkyl, C1-C4 alkoxy,
C1-C4 haloalkoxy, OH, amino, alkylamino, dialkylamino, aryl, or heteroaryl;
or R15a and R15b together with the C atoms to which they are attached form C3-
C10 cycloalkyl or a 3- to 10-membered heterocycloalkyl group, each optionally
substituted by 1, 2, 3 or 4 halo, C1-C4 alkyl, C1-C4 alkoxy, C1-C4 haloalkoxy, OH,
amino, alkylamino, dialkylamino, aryl, or heteroaryl;
or R15c and R15a together with the C atoms to which they are attached form C3-
C10 cycloalkyl or a 3- to 10-membered heterocycloalkyl group, each optionally

substituted by 1, 2, 3 or 4 halo, C1-C4 alkyl, C1-C4 alkoxy, C1-C4 haloalkoxy, OH,
amino, alkylamino, dialkylamino, aryl, orheteroaryl;
or R15b and R13b together with the C atoms to which they are attached and the
intevening D moiety form aryl, heteroaryl, C3-C10 cycloalkyl or a 3- to 10-membered
heterocycloalkyl group, each optionally substituted by 1,2,3 or 4 halo, C1-C4 alkyl, C1-
C4 alkoxy, C1-C4 haloalkoxy, OH, amino, alkylamino, dialkylamino, aryl, or heteroaryl;
R16 is H or C1-C6 alkyl; and
p and q are each, independently, 1,2 or 3.
[0097] In some embodiments, D is absent.
[00981 In some embodiments, D is MR16.
[0099] In some embodiments, D is NH.
[00100] In some embodiments, D is CH2.
[00101] In some embodiments, R15a and R15b together with the C atoms to which
they are attached form C3-C10 cycloalkyl or a 3- to 10-membered heterocycloalkyl
group, each optionally substituted by 1,2,3 or 4 halo, C1-C4 alkyl, C1-C4 alkoxy, C1-C4
haloalkoxy, OH, amino, alkylamino, dialkylamino, aryl, or heteroaryl; and R15c and R15d
together with the C atoms to which they are attached form C3-C10 cycloalkyl or a 3- to
10-membered heterocycloalkyl group, each optionally substituted by 1, 2, 3 or 4 halo,
C1-C4 alkyl, C1-C4 alkoxy, C1-C4 haloalkoxy, OH, amino, alkylamino, dialkylamino,
aryl, or heteroaryl.
[00102] In some embodiments, R15a and R15b together with the C atoms to which
they are attached form cyclopropyl, cyclobutyl, cyclopenytyl, cyclohexyl or
cycloheptyl; and R15c and RI5d together with the C atoms to which they are attached
form cyclopropyl, cyclobutyl, cyclopenytyl, cyclohexyl or cycloheptyl.
[00103] In some embodiments, D is absent and Rl5b and R15c together with the C
atoms to which they are attached form aryl, heteroaryl, C3-C10 cycloalkyl or a 3- to 10-
membered heterocycloalkyl group, each optionally substituted by 1, 2, 3 or 4 halo, C1-
C4 alkyl, C1-C4 alkoxy, C1-C4 haloalkoxy, OH, amino, alkylamino, dialkylamino, aryl,
or heteroaryl.
[00104] In some embodiments, D is absent and R15b and R15c together with the C
atoms to which they are attached form C3-C10 cycloalkyl optionally substituted by 1, 2,
3 or 4 halo, C1-C4 alkyl, C1-C4 alkoxy, C1-C4 haloalkoxy, OH, amino, alkylamino,
dialkylamino, aryl, or heteroaryl.

[00105] In some embodiments, D is absent and R15b and R15c together with the C
atoms to which they are attached form C3-C10 cycloalkyl optionally substituted by 1,2,
3 er 4 halo or C1-C4 alkyl.
[00106] In some embodiments, D is absent and R15b and R15c together with the C
atoms to which they are attached form a C7-C10 bicyclic cycloalkyl group optionally
substituted by 1,2,3 or 4 halo or C1-C4 alkyl.
[00107] In some embodiments, p and q are each 1.
[00108] In some embodiments, at least one of R15', R15b, R15c, R15d is other than
H.
[00109] Further examples of "cyclic boronic esters", as defined herein, include,
boronic esters with the following structures:

wherein: W is a substituted or unsubstituted C4-C10 cycloalkyl ring or a substituted or
unsubstituted phenyl ring; W1 is, independently at each occurrence, a substituted or
unsubstituted C3-C6 cycloalkyl ring. Groups R15a, R15b, R15c, R15d, R15e, R15f, p and q are,
defined as provided above.
[00110] As used herein, the term "alkyl" or "alkylene" is meant to refer to a
v
saturated hydrocarbon group which is straight-chained or branched. Example alkyl
groups include methyl (Me), ethyl (Et), propyl (e.g., n-propyl and isopropyl), butyl (e.g.,
n-butyl, isobutyl, s-butyl, t-butyl), pentyl (e.g., n-pentyl, isopentyl, neopentyl) and the
like. An alkyl group can contain from 1 to about 20, from 2 to about 20, from 1 to about
10, from 1 to about 8, from 1 to about 6, from 1 to about 4, or from 1 to about 3 carbon
atoms.

[00111] As used herein, "alkenyl" refers to an alkyl group having one or more
double carbon-carbon bonds. Example alkenyl groups include ethenyl, propenyl,
butenyl, pentenyl, hexenyl, butadienyl, pentadienyl, hexadienyl, and the like.
[00112] As used herein, "alkynyl" refers to an alkyl group having one or more
triple carbon-carbon bonds. Example alkynyl groups include ethynyl, propynyl, butynyl,
pentynyl, and the like.
[00113] As used herein, "haloalkyl" refers to an alkyl group having one or more
halogen substituents. Example haloalkyl groups include CF3, C2F5, CHF2, CCl3, CHCl2,
C2Cl5, and the like. An alkyl group in which all of the hydrogen atoms are replaced with
halogen atoms can be referred to as "perhaloalkyl." Examples perhaloalkyl groups
include CF3 and C2F5.
[00114] As used herein, "carbocyclyl" groups are saturated (i.e., containing no
double or triple bonds) or unsaturated (i.e., containing one or more double or triple
bonds) cyclic hydrocarbon moieties. Carbocyclyl groups can be mono- or polycyclic.
Example carbocyclyl groups include cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl,
cycloheptyl, cyclopentenyl, 1, 3-cyclopentadienyl, cyclohexenyl, norbornyl, norpinyl,
norcarnyl, adamantyl, phenyl, and the like. Carbocyclyl groups can be aromatic (e.g.,
"aryl") or non-aromatic (e.g., "cycloalkyl"). In some embodiments, carbocyclyl groups
can have from 3 to about 20,3 to about 10, or 3 to about 7 carbon atoms.
[00115] As used herein, "aryl" refers to aromatic carbocyclyl groups including
monocyclic or polycyclic aromatic hydrocarbons such as, for example, phenyl,
naphthyl, anthracenyl, phenanthrenyl, indanyl, indenyl, and the like. In some
embodiments, aryl groups have from 6 to about 18 ring-forming carbon atoms.
[00116] As used herein, "cycloalkyl" refers to non-aromatic carbocyclyl groups
including cyclized alkyl, alkenyl, and alkynyl groups. Cycloalkyl groups can include bi-
or poly-cyclic ring systems. Example cycloalkyl groups include cyclopropyl, cyclobutyl,
cyclopentyl, cyclohexyl, cycloheptyl, cyclopentenyl, cyclohexenyl, cyclohexadienyl,
cycloheptatrienyl, norbornyl, norpinyl, norcarnyl, adamantyl, and the like. Also included
in the definition of cycloalkyl are moieties that have one or more aromatic rings fused
(i.e., having a bond in common with) to the cycloalkyl ring, for example, benzo
derivatives of cyclopentane (indanyl), cyclohexane (tetrahydronaphthyl), and the like.
In some embodiments, cycloalkyl groups can have 3,4, 5, 6, or 7 ring forming carbon

atoms. In some embodiments, cycloalkyl groups can have 0, 1, or 2 double or triple
ring-forming bonds.
[00117] As used herein, "heterocarbocyclyl" groups can be saturated or
unsaturated carbocyclyl groups wherein one or more of the ring-forming carbon atoms
of the carbocyclyl group is replaced with a heteroatom such as O, S, or N.
Heterocarbocyclyl groups can be aromatic (e.g., "heteroaryl") or non-aromatic (e.g.,
"heterocycloalkyl"). Heterocarbocyclyl groups can correspond to hydrogenated and
partially hydrogenated heteroaryl groups. Heterocarbocyclyl groups can contain, in
addition to at least one heteroatom, from about 1 to about 20, about 2 to about 10, or
about 2 to about 7 carbon atoms and can be attached through a carbon atom or
heteroatom. Examples of heterocarbocyclyl groups include morpholino, thiomorpholino,
piperazinyl, tetrahydrofuranyl, tetrahydrothienyl, 2,3-dihydrobenzofuryl, 1,3-
benzodioxole, benzo-1,4-dioxane, piperidinyl, pyrrolidinyl, isoxazolidinyl,
isothiazolidinyl, pyrazolidinyl, oxazolidinyl, thiazolidinyl, imidazolidinyl, and the like.
[00118] As used herein, "heteroaryl" groups are aromatic heterocarbocyclyl
groups and include monocyclic and polycyclic aromatic hydrocarbons that have at least
one heteroatom ring member such as sulfur, oxygen, or nitrogen. Heteroaryl groups
include, without limitation, pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, furyl,
quinolyl, isoquinolyl, thienyl, imidazolyl, thiazolyl, indolyl, pyrrolyl, oxazolyl,
benzofuryl, benzothienyl, benzthiazolyl, isoxazolyl, pyrazolyl, triazolyl, tetrazolyl
indazolyl, 1,2,4-thiadiazolyl, isothiazolyl, benzothienyl, purinyl, carbazolyl,
benzimidazolyl, and the like. In some embodiments, heteroaryl groups can have from 3
to about 20 ring-forming carbon atoms, and in further embodiments from about 3 to
about 12 ring forming carbon atoms. In some embodiments, heteroaryl groups have 1 to
about 4,1 to about 3, or 1 to 2 heteroatoms.
[00119] As used herein, "heterocycloalkyl" refers to a non-aromatic
heterocarbocyclyl group including cyclized alkyl, alkenyl, and alkynyl groups where
one or more of the ring-forming carbon atoms is replaced by a heteroatom such as an O,
N, or S atom. Ring-forming carbon and heteroatoms such as S and N can further be
oxidized in a heterocycloalkyl moeity. For example, the ring-forming carbon or
heteroatom can bear one or two oxo or sufido moieties (e.g., >C=O, >S=O, >S(=O)2,
N→O, etc.). Also included in the definition of heterocycloalkyl are moieties mat have
one or more aromatic rings fused (i.e., having a bond in common with) to the

nonaromatic heterocyclic ring, for example phthalimidyl, naphthalimidyl pyromellitic
diimidyl, phthalanyl, and benzo derivatives of saturated heterocycles such as indolene
and isoindolene groups. In some embodiments, heterocycloalkyl groups have 3 to about
20 ring-forming atoms. In some embodiments, heterocycloalkyl groups have 3,4,5, 6,
or 7 ring-forming atoms. In some embodiments, heterocycloalkyl groups have 0,1, or 2
double or triple ring-forming bonds.
[00120] As used herein, "halo" or "halogen" includes fluoro, chloro, bromo, and
iodo.
[00121] As used herein, "alkoxy" refers to an -O-alkyl group. Example alkoxy
groups include methoxy, ethoxy, propoxy (e.g., n-propoxy and isopropoxy), t-butoxy,
and the like. In some embodiments, alkoxy groups have from 1 to 20,1 to 12,1 to 8,1
to 6,1 to 4 or 1 to3 carbon atoms.
[00122] As used herein, "alkoxyalkoxy" refers to an -O-alkyl-O-alkyl group.
[00123] As used herein, "thioalkoxy" refers to an alkoxy group in which the O
atom is replaced by an S atom.
[00124] As used herein, "aryloxy" refers to an -O-aryl group. An example
aryloxy group is phenoxy.
[00125] As used herein, "thioaryloxy" refers to an aryloxy group in which the O
atom is replaced by an S atom.
[00126] As used herein, "aralkyl" refers to an alkyl moiety substituted by an aryl
group. Example aralkyl groups include benzyl and naphthylmethyl groups. In some
embodiments, aralkyl groups have from 7 to 11 carbon atoms.
[00127] As used herein, "amino" refers to an -NH2 group. "Alkylamino" refers to
an amino group substituted by an alkyl group and "dialkylamino" refers to an amino
group substituted by two alkyl groups. On the contrary, "aminoalkyl" refers to an alkyl
group substituted by an ammo group.
[00128] As used herein, "carbonyl" refers to >C=O.
[00129] As used herein, "carboxy" or "carboxyl" refers to -COOH.
[00130] As used herein, "hydroxy" refers to -OH.
[00131] As used herein, "mercapto" refers to -SH.
[00132] As used herein, "ureido" refers to -NHCONH2.
[00133] As used herein, "sulfinyl" refers to >SO.
[00134] As used herein, "sulfonyl" refers to >SO2.

[00135] As used herein, "oxy" refers to -O-.
[00136] The above chemical terms can be combined to refer to moieties
containing a combination of chemical groups. This combination term is generally read
such that a recited term is understood to be a substituent of a following term. For
example, "alkylcarbonylalkenyl" refers to an alkenyl group substituted by a carbonyl
group which in turn is substituted by an alkyl group. The following terms can also
exemplify such combinations.
[00137] As used herein, "carbocyclylalkyr refers to an alkyl moiety substituted
by a carbocyclyl group. Example carbocyclylalkyl groups include "aralkyl" (alkyl
substituted by aryl) and "cycloalkylalkyl" (alkyl substituted by cycloalkyl).
[00138] As used herein, "carbocycrylalkenyl" refers to an alkenyl moiety
substituted by a carbocyclyl group. Example carbocyclylalkenyl groups include
"aralkenyl" (alkenyl substituted by aryl) and "cycloalkylalkenyl" (alkenyl substituted by
cycloalkyl).
[00139] As used herein, "carbocyclylalkynyr refers to an alkynyl moiety
substituted by a carbocyclyl group. Example carbocyclylalkynyl groups include
"aralkynyl" (alkynyl substituted by aryl) and "cycloalkylalkynyl" (alkynyl substituted
by cycloalkyl).
[00140] As used herein, "heterocarbocyclylalkyl" refers to an alkyl moiety
substituted by a heterocarbocyclyl group. Example heterocarbocyclylalkyl groups
include "heteroarylalkyl" (alkyl substituted by heteroaryl) and "heterocycloalkylalkyl"
(alkyl substituted by heterocycloalkyl).
[00141] As used herein, "heterocarbocyclylalkenyl" refers to an alkenyl moiety
substituted by a heterocarbocyclyl group. Example heterocarbocyclylalkenyl groups
include "heteroarylalkenyl' (alkenyl substituted by heteroaryl) and
"heterocycloalkylalkenyl" (alkenyl substituted by heterocycloalkyl).
[00142] As used herein, "heterocarbocyclylalkynyl" refers to an alkynyl moiety
substituted by a heterocarbocyclyl group. Example heterocarbocyclylalkynyl groups
include "heteroarylalkynyl" (alkynyl substituted by heteroaryl) and
"heterocycloalkynylalkyl" (alkynyl substituted by heterocycloalkyl).
[001431 As used herein, the phrase "protecting group" refers to a chemical
functional group that can be selectively appended to and removed from functionalities,
such as hydroxy] groups, amino groups, and carboxyl groups. Protecting groups are

usually introduced into a chemical compound to render such functionality inert to
ehemical reaction conditions to which the compound is exposed. Any of a variety of
protecting groups can be employed with the present invention. A protecting group of an
amino moiety can be referred to as an "amino protecting group" and a protecting group
of a guanidino moiety can be referred to as a "guanidino protecting group." Amino and
guanidino protecting groups can have the formulas aryl-SO2, alkyl-SO2, aryl-C(=O)-,
aralkyl-C(O)-, alkyl-C(=O)-, aryl-OC(=O)-, aralkyl-OC(=O)- alkyl-OC(=O)- aryl-
NHC(=O)-, alkyl-NHC(=O)- and me like, wherein said alkyl, aryl and aralkyl groups
may be substituted or unsubstituted. Example amino and guanidino protecting groups
can also include t-butyloxycarbonyl (BOC), fluorenylmemoxycarbonyl (Fmoc),
benzyloxycarbonyl (Cbz), and a phthalimido group. Other protecting groups include the
following moieties:

Further representative protecting groups can be found in T.W. Green and P.G.M. Wuts,
Protective Groups in Organic Synthesis, 3rd. Ed., Wiley & Sons, Inc., New York
(1999), which is incorporated.herein by reference in its entirety.
[00144] As used herein, "substituted" indicates that at least one hydrogen atom of
a chemical group is replaced by a non-hydrogen moiety. Example substituents include
F, Cl, Br, I, C1-C6 alkyl, C1-C6 alkenyl, C1-C6, alkynyl, haloalkyl, NRERF, N3, NO2, CN,
CNO, CNS, C(=O)ORE, REO, REC(=O)O, RECONRE, RERFCO, ureido, ORE, SRE,
SO2-alkyl, SO2-aryl, and SO2-NRERF, wherein RE and RF are each, independently, H or
C1-C6 alkyl. Alternatively, RE and RF may be combined, with the nitrogen to which they
are attached, to form a 5 to 7 membered heterocyclic ring, for example pyrrolidinyl,
piperidinyl, morpholinyl, piperazinyl, and N-methylpiperazinyl. When a chemical group


herein is "substituted" it may have up to the full valance of substitution, provided the
resulting compound is a stable compound or stable structure; for example, a methyl
group may be substituted by 1, 2, or 3 substituents, a methylene group may be
substituted by 1 or 2 substituents, a phenyl group may be substituted by 1, 2, 3,4, or 5
substituents, and the like.
[00145] As used herein, "leaving group" refers to any group that can be replaced
by a nucleophile upon nucleophilic substitution. Example leaving groups include, halo
(F, Cl, Br, I), hydroxyl, alkoxy, mercapto, thioalkoxy, triflate, alkylsulfonyl, substituted
alkylsulfonate, arylsulfonate, substituted arylsulfonate, heterocyclosulfonate or
trichloroacetimidate. Representative examples include p-(2,4-
dinitroaniiino)benzenesulfonate, benzenesulfonate, methylsulfonate, p-
methylbenzenesulfonate, p-bromobenzenesulfonate, trichloroacetimidate, acyloxy,
2,2,2-trifluoroethanesulfonate, imidazolesulfonyl and 2,4,6-trichlorophenyl.
[00146] As used herein "stable compound" or "stable structure" refers to a
compound that is sufficiently robust to survive isolation to a useful degree of purity
from a reaction mixture, and preferably capable of formulation into an efficacious
therapeutic agent. The present invention is directed only to stable compounds.
[00147] The compounds described herein can be asymmetric (e.g., having one or
more stereocenters). All stereoisomers, such as enantiomers and diastereomers, are
intended unless otherwise indicated. Compounds of the present invention that contain
asymmetrically substituted carbon atoms can be isolated in optically active or racemic
forms. Methods on how to prepare optically active forms from optically active starting
materials are known in the art, such as by resolution of racemic mixtures or by
stereoselective synthesis. Many geometric isomers of olefins, C—N double bonds, and
the like can also be present in the compounds described herein, and all such stable
isomers are contemplated in the present invention. Cis and trans geometric isomers of
the compounds of the present invention are described and may be isolated as a mixture
of isomers or as separated isomeric forms.
[00148] In addition to the above, the compounds herein described may have
asymmetric centers which result in one enantiomer of a compound of Formula (I)
demonstrating superior biological activity over the opposite enantiomer. Bom of the
configurations are considered part of the invention. For example, the R2 substituent of a

compound of Formula (I) may exist in either an S or R configuration. An example of a
preferred enantiomeric configuration of the invention is a compound of Formula (I-s):

but is not intended to be limited to this example. When required, separation of the
racemic material can be achieved by methods known in the art
[00149] Compounds of the invention can also include tautomeric forms, such as
keto-enol tautomers. Tautomeric forms can be in equilibrium or sterically locked into
one form by appropriate substitution.
[00150] Compounds of the invention can also include all isotopes of atoms
occurring in the intermediates or final compounds. Isotopes include those atoms having
the same atomic number but different mass numbers. For example, isotopes of hydrogen
include tritium and deuterium.
[00151] 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 human
beings and animals without excessive toxicity, irritation, allergic response, or other
problem or complication, commensurate with a reasonable benefit/risk ratio.
[00152] The present invention also includes pharmaceutically acceptable salts of
the compounds described herein. As used herein, "pharmaceutically acceptable salts"
refers to derivatives of the disclosed compounds wherein the parent compound is
modified by converting an existing acid or base moiety to its salt form. Examples of
pharmaceutically acceptable salts include, but are not limited to, mineral or organic acid
salts of basic residues such as amines; alkali or organic salts of acidic residues such as
carboxylic acids; and the like. The pharmaceutically acceptable salts of the present
invention include the conventional non-toxic salts or the quaternary ammonium salts of
the parent compound formed, for example, from non-toxic inorganic or organic acids.
For example, such conventional non-toxic salts include those derived from inorganic
acids such as hydrochloric, hydrobromic, sulfuric, sulfamic, phosphoric, nitric and the

like; and the salts prepared from organic acids such as acetic, propionic, succinic,
glycolic, stearic, lactic, malic, tartaric, citric, ascorbic, pamoic, maleic, hydroxymaleic,
phenylacetic, glutamic, benzoic, salicylic, sulfanilic, 2-acetoxybenzoic, fumaric,
toluenesulfonic, methanesulfonic, ethane disulfonic, oxalic, isethionic, and the like. The
pharmaceutically acceptable salts of the present invention can be synthesized from the
parent 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, 17th ed., Mack Publishing
Company, Easton, Pa., 1985, p. 1418 and in the Journal of Pharmaceutical Science, 66, 2
(1977), the disclosures of each of which are hereby incorporated by reference.
Synthesis
[00153] Compounds of the invention, including salts and solvates thereof, can be
prepared using known organic synthesis techniques and can be synthesized according to
any of numerous possible synthetic routes.
[00154] The reactions for preparing compounds of the invention can be carried
out in suitable solvents which can be readily selected by one of skill in the art of organic
synthesis. Suitable solvents can be substantially nonreactive with the starting materials
(reactants), the intermediates, or products at the temperatures at which the reactions are
carried out, i.e., temperatures which can range from the solvent's freezing temperature to
the solvent's boiling temperature. A given reaction can be carried out in one solvent or a
mixture of more than one solvent. Depending on the particular reaction step, suitable
solvents for a particular reaction step can be selected.
[00155] Preparation of compounds of the invention can involve the protection and
deprotection of various chemical groups. The need for protection and deprotection, and
the selection of appropriate protecting groups can be readily determined by one skilled
in the art. The chemistry of protecting groups can be found, for example, in T.W.
Greene and P.G.M. Wuts, Protective Groups in Organic Synthesis, 3rd. Ed., Wiley &
Sons, Inc., New York (1999), which is incorporated herein by reference in its entirety.

[00156] Reactions can be monitored according to any suitable method known in
the art. For example, product formation can be monitored by spectroscopic means, such
as nuclear magnetic resonance spectroscopy (e.g., 1H or 13C) infrared spectroscopy,
spectrophotometry (e.g., UV-visible), or mass spectrometry, or by chromatography such
as high performance liquid chromatography (HPLC) or thin layer chromatography.
[00157] Compounds of the invention can be prepared according to methods for
preparing aminoboronic acids, esters thereof, and related compounds described in the
art, such as in U.S. Pat No. 4,537,773, and in U.S. Pat No. 5,614,649, each of which is
incorporated herein by reference in its entirety. In some embodiments, the present
compounds can be prepared by the sequential coupling of three fragment components
(F1, F2, and F3).
F1 Fragment
[00158] Synthesis of compounds of the invention can involve a boron-containing
fragment (F1) having a structure indicated by Formula (A).

[00159] The boronic ester moiety of Fl can include, for example, a diol ester such
as is indicated by the loop connecting oxygen atoms in Formula (A).
[00160] Stereochemistry at the carbon atom alpha to the boron atom in Formula
(A) can be controlled using an asymmetric boronic ester group in the preparation of F1.
For example, pinanediol esters of boronic acid can facilitate the preparation or
stereochemically pure, or substantially stereochemically pure, Ft fragment. As an
example, the F1 fragment can be prepared by reacting a compound of Formula (B)
(showing a pinanediol boronic ester obtained from (+)-pinanediol) with a strong base
(e.g., lithium diisopropylamide or lithium dicyclohexylamide) in the presence of
dichloromethane or dibromomethane, followed by addition of a Lewis acid, (e.g., ZnCl2,
ZnBr2, or FeCl3) to yleld a compound of Formula (C) (where L is halo) having a newly
introduced stereocenter at the carbon alpha to the boron.


[00161] The compound of Formula (C) can, in turn, be reacted with an alkali
amide (e.g., lithium bis(trimethylsilyl)amide, sodium bis(trimethylsilyl)amide, and
potassium bis(trimethylsilyl)amide) or other nucleophile that effectively inverts the
newly formed stereocenter (such as by an SN2 type mechanism) and introduces an
amine group (NR2) in place of the halo group (e.g., chloro), forming a compound.of
Formula (D) (where R can be, e.g., alkyl, Si(alkyl)3, aryl, or aralkyl).

[00162] The compound of Formula (D) can be further reacted with an agent
capable of converting the NR2 group to NH2, or salt thereof, to form an F1 fragment
substantially capable of coupling with a further fragment through the amine. A suitable
agent for converting the NR2 group to NH2 can be a protic acid such as HC1 such as
when R is a silyl group (e.g., trimethylsilyl).
[00163] The compound of Formula (B) can also be prepared according to a two
step procedure involving reaction of a trialkoxyborane, preferably triisopropoxyborane,
with (1S, 2S, 3R, 5S)-(+) pinanediol, to give a mono-alkoxy [(1S, 2S, 3R, 5S)-(+)
pinanediol] borane intermediate wherein two of the alkoxy groups of the trialkoxy
borane have been replaced by (1S, 2S, 3R, 5S)-(+) pinanediol. This mixed pinanediol
alkoxy borane, upon reaction with the appropriate organometallic derivative, e.g. the

Grignard reagent R1CH2MgBr or the alkyl lithium R1CH2Li, gives compound (B) in
-good ylelds and purities. The process starting from triisopropoxyborane to give the
intermediate mixed pinanediol isopropoxy borane (F) and the compounds of formula (B)
is depicted in the following scheme:

»
and exemplified in Example A.2, herein.
[00164] Accordingly, the present invention is further directed to methods of
preparing compounds of Formula (IT):

wherein the variable constituents are defined hereinabove, by the process of a) reacting
a diol of Formula (Il-b):
with an appropriate trialkoxyborane of Formula (II-a):


wherein each R17 is, independently, C1-C10 alkyl or C3-C10 cycloalkyl;
for a time and under conditions suitable for forming a mixed trialkoxyborane
intermediate of Formula (II-c):
v - - - j
and reacting the intermediate of Formula (H-c) with either i) a reagent of formula
R1CH2MXhal, wherein M is a metal and X is a halogen atom, or ii) a reagent of
formula R1CH2Li, for a time and under conditions suitable for forming the compound
of Formula (II).
[00165] In some embodiments, R17 is C1-C4 alkyl.
[00166] In some embodiments, R17 is isopropyl.
[00167] In some embodiments, the diol of Formula (II-b) is pinanediol, pinacol,
bicyclohexyl-1,1'-diol, 1,2-etbanediol, 1,3-propanediol, 1,2-propanediol, 2,3-butanediol,
1,1,2,2-tetramethylethanediol, 1,2-diisopropylethanediol, 5,6-decanediol,
1,2-dicyclohexylethanediol, bicyclohexyl-1,1'-diol, diethanolamine, or
1,2-diphenyl-1,2-ethanediol.
[00168] In some embodiments, the diol of Formula (II-b) is pinanediol.
[00169] In some embodiments, the Formula R1CH2MXha1 is a Grignard reagent.
[00170] In some embodiments, the Formula R1CH2MXhal is R1CH2MgBr.
[00171] In some embodiments, R1 is isopropyl.
[00172] In some embodiments, the present invention provides a process for
preparing a compound of Formula (Il-i):

comprising:

a) reacting (1S, 2S, 3R, 5S)-(+)-pinanediol with triisopropoxy borane for a time and
under conditions suitable for forming an intermediate of Formula (II-ii):

and b) reacting the intermediate of Formula (II-ii) with isobutyl magnesium bromide for
a time and under conditions suitable for forming the compound of Formula (II-i).
[00173] In some embodiments, the present invention provides a compound of
Formula (II-ii):
[00174] the reacting steps can be carried out in any suitable solvent mat is non-
reactive with the reagents and products and allows combining of reagents at lowered
temperatures (e.g., temperatures colder than room temperature). Suitable solvents
include ethers such as dimethoxymethane, tetrahydrofuran, 1,3-dioxane, 1,4-dioxane,
furan, diethyl ether, ethylene glycol dimethyl ether, ethylene glycol diethyl ether,
diethylene glycol dimethyl ether, diethylene glycol diethyl ether, triethylene glycol
dimethyl ether, anisole, or t-butyl methyl ether. In some embodiments, the ether solvent
contains tetrahydrofuran and/or diethyl ether.
[00175] The reactions of the processes described herein can be carried out at
appropriate temperatures which can be readily determined by the skilled artisan.
Reaction temperatures will depend on, for example, the melting and boiling points of the
reagents and solvent, if present; the thermodynamics of the reaction (e.g., vigorously
exothermic reactions may need to be carried out at reduced temperatures); and the
kinetics of the reaction (e.g., a high activation energy barrier may need elevated
temperatures). "Elevated temperature" refers to temperatures above room temperature
(about 22 °C) and "reduced temperature" refers to temperatures below room
temperature.

[00176] In some embodiments, suitable temperatures are reduced temperatures.
The reaction of the trialkoxyborane and diol to prepare a mixed trialkoxyborane
intermediate can be carried out, for example, at a temperature of about -20 to about 10
°C. In some embodiments, the reaction of the trialkoxyborane and diol can be carried
out at about 0 °C. The reaction of the mixed trialkoxyborane intermediate with the
organometallic reagent R1CH2MXhal or the alkyl lithium reagent R1CH2Li can be carried
out, for example, at temperature from about -100 to about -20 °C. In some
embodiments, the reaction of the mixed trialkoxyborane intermediate and R1CH2MXhal
is carried out at about -78 °C.
[00177] The reactions of the processes described herein can be carried out in air
or under an inert atomosphere. Typically, reactions containing reagents or products that
are substantially reactive with air can be carried out using air-sensitive synthetic
techniques that are well known to the skilled artisan.
B. F2 Fragment
[00178] The mid-section of compounds of the present invention can be
represented by fragment F2 which couples to fragment F1 by peptide bond formation for
form an F2-F1 intermediate. Methods for coupling compounds through peptide bonds,
or amide bonds, are well known in the art and described, for example, in The Peptides:
Analysis, Synthesis, Biology, Vol. I., eds. Gross, et al., Academic Press, 1979. An
example F2 fragment is provided in Formula (E) (Pg is an amino protecting group, R2 is
defined herein). Additionally, protection of the amino group of amino acids using Boc
or other amino protecting groups is well known in the art.

[00179] Compounds of Formula (E) that are amino acids or amino acid
derivatives are available commercially or prepared by routine methods. For example,
aza-serines can be prepared generally by the Hoffman Rearrangement (Hoffman's
Reaction) using, for example, asparagine where the amide of the asparagine side chain is

converted to an amine (which can be subsequently protected). Methods for carrylng out
Hoffman Rearrangements, such as for amino acids, are known in the art and also
provided in the Examples below. Additionally aza-serines can be prepared as disclosed
in Zhang, et al. J. Org. Chem., 1997,62,6918-6920. Boc-cyanoarginine derivatives can
be prepared as disclosed in Wagenaar et al., J. Org. Chem. 1993, 58, 4331-4338.
Synthesis of F2 fragments wherein R2 is -CH2CH2CH2NHC(=NR4)NH-Y, -
CH2CONR5R6, -CH2NHCONR5R6, -CH2NR9R10, or -CH(R7)ZR8 are further disclosed
herein. F2 fragments can be obtained from commercial sources or made by methods
known to one skilled in the art
C. F3 Fragments
[00180] A former fragment (F3) can be coupled to the F2 fragment of the F2-F1
intermediate by any of various means such as by nucleophilic substitution or addition
reactions where, for example, F2 contains a nucleophile (e.g., amine) and F3 contains an
electrophile (e.g., CO, SO2, and the like) and optionally a leaving group (e.g., halo,
hydroxy, alkoxy, alkylsulfonyl, arylsulfonyl, and the like). Example F3 fragments can
have the formula RXCOXL, RXSO2XL, RXNCO, or RXHCO, (e.g., RX can be RA, RB, or
Rc as defined herein and XL can be a leaving group). Coupling of RxCOXL (such as
When XL is OH) to the F2-F1 intermediate can be carried out according to standard
procedures for peptide bond formation to prepare compounds having the formula F3-F2- F1
where the F3 and F2 fragments are coupled via an amide bond. In other
embodiments, F3 and F2 can be coupled by a sulfonylamino linkage prepared by
reacting RXSO2XL with the F2-F1 intermediate in which an amino moiety on the F2-F1
intermediate displaces the XL leaving group of RXSO2XL. Additionally, reaction of
RxNCO with an amino moiety of the F2-F1 intermediate can result in a urea linkage (-
HNCONH-), while reaction of RXHCO with an amino moiety of the F2-F1 intermediate
followed by reduction of the resulting imine moiety can form an amine linkage. Other
coupling means are known in the art and are also suitable. F3 fragments can be obtained
from commercial sources or made by methods known in the art
[00181] Certain compounds of the invention wherein R2 is -(CH2)dCH(R7)NR9R10
can be prepared by removal of an R10 amino protecting group to form the corresponding
deprotected compound wherein R10 is H. This deprotected compound can be reacted
with a reagent having the formula R10aXL, wherein R10a has the same meaning as R10

with the exception of H and XL is a leaving group such as halo or a sulfonic acid
derivative, or wherein R10a and XL taken together represent, for example, a reactive
alkyl, carbocyclyl or heterocarbocyclyl isocyanate, or an alkyl, carbocyclyl,
heterocarbocyclyl sulphonylisocyanate. For example, the compound of Example D.26
can be prepared by the deprotection of the benzyloxycarbonyl group of Example D.16.6
to give Example D.17, from which the azaserine nitrogen can be subsequently acylated.
[00182] The present invention further provides methods for preparing azaserine
(e.g., where R2 is -CH2NH2) compounds of Formula I. In general, the azaserine group
can be generated by removal of a benzyloxycarbonyl group (-C(=O)OCH2(C6H5)) which
is attached to one of the nitrogens of the azaserine group (e.g., compounds of Formula I
where R2 is -CH2NR9R10 and R9 is H and R'° is -C(=O)OCH2(C6H5)). Removal of the
benzyloxycarbonyl group can be carried out by treatment with a reducing agent, such as
a hydrogenation reagent. In some embodiments, the hydrogenation reagent contains H2
which is optionally used in the presence of a metal catalyst (e.g., Pd/C 10%).
Hydrogenation can be further carried out in the presence of a protic acid such as HC1
and in a suitable hydrogenation solvent containing, for example, an alcohol and/or an
ether solvent. In some embodiments, the hydrogenation solvent contains an ether such
as 1,4-dioxane. In further embodiments, the hydrogenation solvent cotains an alcohol
such as methanol. In further embodiments, the hydrogenation solvent contains a
mixture of alcohol and ether. An example preparation of an azaserine compound
according to this process is provided, for example, in Example D.17. Reaction
parameters including temperature, pressure, atomosphere and the like are readily
determined by one skilled in the art of chemical synthesis and reaction progress can be
monitored by routine methods including, e.g., NMR.
[00183] Accordingly, the present invention provides a process for the preparation
of compounds of Formula (I):


R1 is C1-C6 alkyl, C2-C6 alkenyl, C1-C6 alkynyl, or C3-C7 cycloalkyl;
R2 is-CH2NH2;
Q is -B(OR14)2, or a cyclic boronic ester wherein said cyclic boronic ester contains from
2 to 20 carbon atoms, and, optionally, a heteroatom which can be N, S, or O;
R14 is C1-C4 alkyl, cycloalkyl, cycloalkylalkyl, aryl, or aralkyl;
X is RAC(=O)-;
RA is C1-C20 alkyl optionally substituted with R20;
C2-C20 alkenyl optionally substituted with R20;
C2-C20 alkynyl optionally substituted with R20;
carbocyclyl optionally substituted with 1-5 R21; or
heterocarbocyclyl optionally substituted with 1-5 R21;
R20 is selected from the group consisting of:
-CN, halo, haloalkyl-, C1-C4 alkyl, C2-C4 alkenyl, C2-C4 alkynyl,
-CO2H, -C(=O)CO2H, -C(=O)NH2, -C(=O)H, -S(=O)NH2, -S(=0)2NH2,
-OH, -SH, -NH2, -NH(alkyl), -N(alkyl)2, -NHC(=O)NH2,
-NHC(=O)R20a, -NHC(=O)OR20a, -OR20a, -SR20a, -S(=O)R20a, -S(=O)2R20a,
-S(=O)2-NHR20a, -SC(=O)R20a, -C(=O)R20a, -C(=O)NHR20a,
-C(=O)O-R20a, -NHS(=O)2R20a, -NHR20b, phthalimido,
-(O--alkyl)r, -O-alkyl-OH, -(O--alkyl)r-OH,
-OR20c, -SR20c, -O-alkyl-R20c, -S-alkyl-R20c, -S(=O)-R20c, -S(=O)2-R20c,
-S(=O)2-NHR20cs -SC(=O)R20c, -C(=O)R20c, -C(=O)OR20c, -C(=O)NHR20c,
carbocyclyl optionally substituted with 1-5 R21; and
heterocarbocyclyl optionally substituted with 1-5 R21;
R20a is C1-C20 alkyl, C2-C20 alkenyl, or C2-C20 alkynyl; wherein said alkyl, alkenyl, or
alkynyl is optionally substituted by one or more halo, C1-C4 alkyl, aryl,
heteroaryl or-NHR20b;
R20b is an amino protecting group;
R20c is carbocyclyl optionally substituted with 1-5 R22; or
heterocarbocyclyl optionally substituted with 1-5 R22;
R21 is selected from the group consisting of:
C1-C20 alkyl, C2-C20 alkenyl, C2-C20 alkynyl, C1-C20 alkoxy,
C1-C20, thialkoxy, -OH -CN, halo, haloalkyl, -NH2, -NH(alkyl), -N(alkyl)2,
-NHC(=O)O-alkyl, -NHC(=O)alkyl, -C(=O)O-alkyl, -C(=O)alkyl,

-S(=O)-alkyl, -S(=O)2-alkyl, -S(=O)-aryl, -S(=O)2-aryl,
carbocyclyl optionally substituted with 1-5 R22, and
heterocarbocyclyl optionally substituted with 1-5 R22;
R22 is selected from the group consisting of:
C1-C10 alkyl, C2-C10 alkenyl, C2-C10 alkynyl, phenyl,
halo, haloalkyl, alkoxy, thialkoxy, amino, alkylamino, dialkylamino,
carboxyl, alkyl-OC(=O)-, alkyl-C(=O)-, aryl-OC(=O)-,
alkyl-OC(=O)NH-, aryl-OC(=O)NH-, alkyl-C(=O)NH-, alkyl-C(=O)O-,
(alkyl-O)r-alkyl, HC-(alkyl-O)r-alkyl-, -OH, -SH, -CN, -N3, -CNO, -CNS,
alkyl-S(=O)-, alkyl-S(=O)r, H2NS(=O)-, and H2NS(=O)2-; and
r is 2,3,4, or 5;
comprising:
reacting a compound of Formula (I) wherein R2 is -CH2NH-C(=O)OCH2(C6H5);
with a suitable hydrogenation reagent for a time and under conditions suitable for
forming the compound of Formula CO wherein R2 is -CH2NH2, provided the
hydrogenation agent is selective for the benzyloxycarbonyl group of R2.
[00184] In some embodiments, the hydrogenation agent is H2 in the presence of
Pd/C 10% and HC1 in 1,4-dioxane.
Boronic Ester/Boronic Acid Conversion
[00185] Compounds of the invention containing boronic esters, such as
pinanediol esters, can be hydrolyzed by any suitable means to prepare corresponding
boronic acid
(-B(OH)2) derivatives. Hydrolysis conditions can include contacting a boronic ester with
excess acid, such as a protic acid like HCl.
[00186] Conversely, boronic acids can be esterified by contacting the acid
compound
(-B(OH)2) with an alcohol such as a diol for sufficient time to produce the
corresponding ester. The esterification reaction can be acid or base catalyzed.
[00187] The invention will be described in greater detail by way of specific
examples. The following examples are offered for illustrative purposes, and are not
intended to limit the invention in any manner. Those of skill in the art will readily

recognize a variety of noncritical parameters which can be changed or modified to yleld
essentially the same results.
EXAMPLES
Example A.1
Synthesis of (lR)-l-[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-4,6-methano-
13vZ-benzodioxaborol-2-yl]-3-methylbutylamine hydrochloride salt
Step 1:2-(2-methylpropyl)-(3aS, 4S, 6S, 7aR)-hexahydro-3a, 5,5-trimethyl-4,6-methano-
1,3,2-benzodioxaborole

[00188] A mixture of (+)-pinanediol (23.9 g, 0.140 mol) and 2-
methylpropylboronic acid (15 g, 0.147 mol) in diethyl ether (300 ml) was stirred at
room temperature for 24h. The mixture was dried over anhydrous sodium sulfate and
purified by column chromatography (Silica gel 230-400 mesh), eluting with
hexane:ethyl acetate 90:10 mixture. The product was obtained as a clear oil (32.6 g,
94% yleld).
1H NMR (DMSO-d6): 4.28 (1H, dd, J=8.8 Hz, 2.0); 2.30 (1H, m); 2.18 (1H, m); 1.96
(1H, t, J=5.3); 1.86 (1H, m); 1.78 (1H, set, J=6.8); 1.68 (1H, m); 1.30 (3H, s); 1.25 (3H,
s); 1.01 (1H, d); 0.9 (6H, d, J=6.6 ); 0.81 (3H, s); 0.69 (2H, m).
Step2:2-[(lS)-1-chloro-3-methylbutyl]-(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl
4,6-methano-l, 3,2-benzodioxaborole

[00189] A solution of lithium diisopropylamide was prepared by addition of 10.0
M butyl lithium solution in hexane (25.4 ml, 0.254 mol) to a solution of
diisopropylamine (35.7 ml, 0.254 mol) in dry tetrahydrofuran (60 ml), at -50 °C, and

allowing the temperature to rise to -30 °C. This solution was transferred via canula into
a solution of 2-(2-methylpropylH3aS,4S,6S,7aR)-hexahydro-3a,5,5-trirnethyl-4,6-
methano-1,3,2-benzodioxaborole of Step 1 (50 g, 0.212 mol) and CH2Cl2 (50 ml, 0.848
mol) in dry tetrahydrofuran (700 ml), while keeping the temperature below -70°C. A
1.0 M solution of dry zinc chloride in diethyl ether (339 ml, 0.339 mol) was then added
over a 30 minutes period while keeping the internal temperature below -70°C. The
reaction mixture was stirred at -78°C for 3 hours, then allowed to warm to room
temperature. After removal of the solvents by rotary evaporation the residue was
partitioned between petroleum ether (1000 ml) and a 10% aqueous solution of
ammonium chloride (800 ml). The aqueous layer was further extracted with petroleum
ether (300 ml). The combined organic phases were dried over anhydrous sodium sulfate
and concentrated. The product was obtained as a brown oil (59.0 g, 98% yleld)
containing about 9% mol/mol of starting material (1H-NMR), and was used in the
subsequent step without further purification.
1H NMR (DMSO-d6): 4.43 (1H, dd, J=8.8,1.8 ); 3.59 (1H, m); 2.33 (1H, m); 221 (1H,
m); 2.01 (1H, m); 1.88 (1H, m); 1.84-1.55 (5H, m); 1.34 (3H, s); 1.26 (3H, s); 1.09 (1H,
, J=10.1); 0.9 (3H, d, J=6.8); 0.87 (3H, d, J=6.4); 0.82 (3H, s).
Step 3: N,N-Bis(trimethylsilyl)-(1R)-1-[(3aS,4S,6S, 7aR)-hexahydro-3a,5,5-trimethyl-
4,6-methano-1,3,2-benzodioxaborol-2-yl]-3-methylbutylamine

[00190] A 1.0 M solution of lithium bis(trimethylsilyl)amide in tetrahydrofuran
(189 ml, 0.189 mol) was added, over 30 minutes, to a solution of crude 2-[(1S)-1-
(chloro-3-methylbutyl]-(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimemyl-4,6-methano-1,3,2-
benzodioxaborole of Step 2 (59.0 g, 91% purity, 0.189 mol) in tetrahydrofuran (580 ml)
while cooling at -78 °C. The reaction mixture was allowed to slowly warm to room
temperature overnight. The solvent was removed by rotary evaporation and the residue

taken up with dry bexane (800 ml). The resulting suspension was stirred at room
temperature for 2 hours, then the solid was removed by filtration on a celite cake, which
was-washed with dry hexane (3 x 100 ml). The filtrate was concentrated giving a
satisfactorily pure product as a brown oil (79 g) in practically quantitative yleld. The
product was used for the subsequent step without further purification.
1H NMR (DMSO-d6): 4.33 (1H, dd, J=1.5 Hz, 8.6); 2.58 (1H, m); 2.29 (1H, m); 2.18
(1H, m); 1.95 (1H, t, J=5.9); 1.85 (1H, m); 1.9-1.55 (3H, m); 1.31 (3H, s); 1.24 (3H, s);
1.17 (1H, m); 1.01 (1H, d, J=10.6); 0.85 (3H, d, J=6.6), 0.83 (3H, d, J=6.6); 0.80 (3H,
s);0.08(I8H,s).
Step 4: (lR)-1-[(3aS,4S,6S, 7aR)-hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-
benzodioxaborol-2-yl]-3-methylbutylamine hydrochloride salt

[00191] To a solution of crude N,N-Bis(trimethylsilyl)-(1R)-1-[(3aS,4S,6S,7aR)-
hexahydro-3a,5,5-trimethyl-4,6-memano-1,3,2-benzodioxaborol-2-yl]-3-
methylbuty famine of Step 3 (79 g, 0.193 mol) in a mixture of dioxane (100 ml) and
diethyl ether (200 ml), a 4 N solution of hydrogen chloride in dioxane (193 ml, 0.772
mol) was added, while cooling at 0°C. The mixture was then stirred at room temperature
for 4 hours and concentrated. The residue was taken up with anhydrous hexane (500 ml)
and a 2 M solution of hydrogen chloride in diethyl ether (48 ml, 0.096 mol) was added.
The mixture was stirred at 0°C for 1 hour, then concentrated. The residue was taken up
with anhydrous hexane and the resulting suspension was stirred at room temperature
overnight. The solid was collected by filtration and dried under vacuum affording 38.1 g
of product (66% yleld). A second crop (4.13 g, 7% yleld) was obtained from the mother
liquors.
1H NMR (DMSO-d6): 7.85 (3H, br); 4.45 (1H, dd, J= 9.2 Hz); 2.78 (1H, m); 2.34 (1H,
m); 2.21 (1H, m); 2.01 (1H, t, J=5.3); 1.89 (1H, m); 1.82-1.65 (2H, m); 1.49 (1H, m);
1.38 (3H, s); 1.27 (3H, s); 1.12 (1H, d, J=1.12); 0.87 (6H, d, J=6.6); 0.83 (3H, s).

Example A.2
Alternate synthesis of 2-(2-methylpropyl)-(3aS,4S,6S,7aR)-hexahydro-3a,5,5-
trimethyl-4,6-methano-1,3,2-benzodioxaboroIe.
Step 1:2-(I-methyletkoxy)-(3aS,4S, 6S, 7aR)-hexahydro-3a,5,5-trimethyl-4,6-methano-
1,3,2-benzodioxaborole.

[00192] To a solution of (1S, 2S, 3R, 5S)-(+)-Pinanediol (50.0 g, 0.293 mol) in
anhydrous tetrahydrofuran (350 ml) triisopropoxy borane was slowly added while
stirring at 0°C under nitrogen. After 2h the solvent was removed by rotary evaporation.
The oily residue was redissolved in hexane (150 ml) and the solution was filtered to
remove a very small amount of a white solid. The filtrate was concentrated by rotary
evaporation affording the product as a clear oil (62.6 g, 90% yleld).
1H NMR (DMSO-d6): 4.31-4.20 (2H, m); 2.34-2.16 (2H, m); 1.96 (1H, t, J=5.5); 1.90-
1.85 (1H, m); 1.74-1.67 (1H, m); 1.32 (3H, s); 1.31 (1H, d, J=7.6); 1.25 (3H, s); 1.14
(3H, d, J=6.1); 1.13 (3H, d, J=6.1); 0.81 (3H, s).
Step 2:2-(2-methylpropyl)-(3aS,4S,6S, 7aR)-hexahydro-3a,5,5-trimethyl-4,6-methano-
1,3,2-benzodioxaborole.
[00193] A 2M solution of isobutyl magnesium bromide in diethyl ether (131.5
ml, 0.263 mol) was added dropwise, in 1 hour, to a solution of 2-(1-methylethoxy)-
(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborole
obtained in Step 1 (62.6 g, 0263 mol), in anhydrous tetrahydrofuran (330 ml) while
stirring at -78°C, under nitrogen. The mixture was then allowed to warm to room
temperature, then transferred in a mixture of 2N sulfuric acid (150 ml) and diisopropyl
ether (250 ml). After stirring for 10 minutes, a saturated solution of NaCl was added
(100 ml) and the layers were separated. The organic phase was washed with brine (100

ml), dried over sodium sulfate and concentrated. The residue was purified by column
chromatography (silica gel) eluting with 5% diethyl ether in hexane. The product was
obtained as a clear oil (38.45 g, 62% yleld).
[00194]
Example B.1
Carbamic acid 1,1-dimethylethyl ester, N-[(1S)-1-[[[(1R)-1-[(3aS,4S,6S,7aR)-
hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-yl]-3-
methylbutyl]amino]carbonyl]-4-[[imino(nirroamino)methyl]amino]butyl]-.

Method A: HOAt/HATU
[00195] To a solution of BocNH(NO2)ArgOH (15.7 g, 49.3 mmol) in anhydrous
DMF (100 ml), HATU (O-(7-azabenzotriazol-1-yl)-1,1,3,3-tetramethyluronium
hexafluorophosphate; 18.7 g, 49.3 mmol) and HOAt (1-hydroxy-7-azabenzotriazole;
6.71 g, 49.3 mmol) were added. The mixture was cooled to 0°C and N-
methylmorpholine was added (13.6 ml, 0.123 mol). After 10 minutes (1R)-1-
[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-
yl]-3-methylbutylamine hydrochloride salt of Example A.I (12.4 g, 41.1 mmol) was
added. The cooling bath was removed and the mixture was stirred at r.t. for 4.5 hours.
The mixture was diluted with ethyl acetate (800 ml), washed with a 2% solution of citric
acid (2x 150 ml), 2% solution of NaHCO3 (2x150 ml) and 2% solution of NaCl (2x150
ml). The aqueous phases were further extracted with ethyl acetate (150 ml). The
combined organic phases were dried over sodium sulfate and concentrated. The
resulting oily residue was redissolved in ethyl acetate (500 ml) and the solution was
washed with cold water (200 ml). The aqueous phases were further extracted with ethyl
acetate (500 ml). The combined organic phases were dried over sodium sulfate and

concentrated. The residue was dissolved in diethyl ether (100 ml) an the solution was
slowly added to hexane (600 ml) while stirring. The white solid was collected by
filtration (43.4 g) and purified by column chromatography eluting initially with 50:50
hexanerethyl acetate mixture and then with ethyl acetate. The fractions containing the
product were concentrated, the residue was dissolved in diethyl ether (100 ml) and the
resulting solution was slowly added to hexane (600 ml) while stirring. The white solid
was collected by filtration (15.2 g, 66% yleld).
Method B: IBCF
[00196] To a suspension of BocNH(NO2)ArgOH (5.82 g, 18.2 mmol) in
anhydrous dichloromethane (100 ml) N-methylmorpholine (2.0 ml, 18.2 mmol) was
added. The mixture was cooled to -15 °C then isobutyl chloroformate was added (2.37
ml, 18.2 mmol). The mixture was stirred at -15°C for 10 minutes then (1R)-1-
[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-4,6-methano-l,3^-benzodioxaborol-2-
yl]-3-methylbutylamine hydrochloride salt obtained as in Example A.1 was added (5.0
g, 16.6 mmol), immediately followed by further N-methylmorpholine (2.0 ml, 18.2
mmol). The reaction mixture was stirred for 1.5 hours at -15°C, then allowed to warm
to room temperature and partitioned between ethyl acetate (150 ml), water (150 ml) and
0.1N hydrochloric acid (10 mi). The organic phase was washed with a saturated solution
of NaHCO3, dried over anhydrous sodium sulphate and concentrated The oily residue
(9.25 g) was purified by crystallization from ethyl acetate affording three crops of
satisfactorily pure product (5.03 g, 54% yleld).
1H NMR (DMSO-d6): 8.80 (1H, br); 8.50 (1H, br), 7.87 (2H, br);7.01 (1H, d, J=7.9),
4.07 (1H, dd, J=7.9); 4.0 (l.H, m); 3.12 (2H, m); 2.55 (1H, m); 2.2 (1H, m); 2.01 (1H,
m); 1.83 (1H, t, J=5.1); 1.78 (1H, m); 1.74-1.44 (7H, m); 1.38 (9H, s); 1.33 (1H, d,
J=10J); 1.24 (5H, s); 1.22 (3H, s); 0.84 (6H, d, J=6.6); 0.81 (3H, s)
Example B.2
Carbamic acid 1,1-dimethylethyl ester, N-[(lS,2R)-1-[[[(lR)-1-[(3aS,4S,6S,7aR)-
hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-yl]-3-
methylbutyl]amino]carbonyl]-2-hydroxypropyl]-


[00197] Boc-L-threonine (870 mg, 3.97 mmol, 1.2eq.) was dissolved in DMF dry
(30 ml) at r.t.. To this solution, TBTU (N,N,N,N'-tetramethyl-O-(benzotriazol-1-
yl)uronium tetrafluoroborate; 1270 mg, 3.97 mmol, 1.2eq.) was added and the mixture
was cooled at 0°-5°C Then NMM (0.9 ml, 8.27 mmol, 2.5eq.) and (1R)-1-
[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimemyl-4,6-methano-1,3,2-benzodioxaborol-2-
yl]-3-methylbutylamine hydrochloride salt of Example A.1 (1000 mg, 33 mmol, 1 eq.)
were added. The mixture was stirred at r.t. for 16h, then was extracted with ethyl acetate
(100 ml) washed with the following solutions: citric acid 2% (50 ml), sodium
bicarbonate 2% (50 ml), NaCl 2% (50 ml). The organic solution was dried over sodium
sulphate anhydrous, filtered and evaporated under reduced pressure to give 1290 mg of
glassy solid. Yield 84.3%.
M.p. 25°-30°C
1H NMR (DMSO-d6): 8.88 (1H, br); 6.49 (1H, d, J-8.4 Hz); 4.88 (1H, d, J=5.8); 4.05
(1H, dd); 3.93 (1H, m); (1H, m); 2.51 (1H, m); 2.19 (1H, m); 2.01 (1H, m); 1.83 (1H, t,
J=5.9), 1.78 (1H, m); 1.68 (1H, m); 1.62 (1H, m); 1.39 (9H, s); 1.34 (1H, d, J=10.0);
1.24 (3H, s); 1.22 (3H, s); 1.06 (3H, d, J=6.4); 0.85 (6H, d, J=6.4); 0.80 (3H, s)
Example B3
Further intermediate compounds
[00198] Starting from the appropriate intermediate and following either of the
procedures described in the Example B.l and B2, the intermediates reported below
were prepared.
(2S)-2-[(l, 1 -dimethylethoxycarbonyl)amim]-5-ureidoperrtanamide, N-[(1R)-1-
[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-
yl]-3-methylbutyl]


H
1H NMR (DMSO-d6): 8.85 (1H, br); 7.01 (1H, d, J=8.0 Hz);5.9 (1H, t, 3=5.7); 5.36 (2H,
br); 4.03 (2H, m); 2.93 (2H, m); 2.19 (1H, m); 2.0 (1H, m); 1.83 (1H, t, J=5.3); 1.78
(1H, m); 1.68 (1H, m); 1.62 (1H, m); 1.52 (2H, m); 1.38 (9H, s); 1.33 (1H, d, J=9.9);
1.24 (3H, s); 1.22 (2H, s); 0.86 (3H, d, J=6.6); 0.84 (3H, d, J=6.6); 0.80 (3H, s).

1H NMR (DMSO-d6): 8.74 (1H, br); 7.28 (1H, br);6.95 (2H, m); 4.36 (1H, m); 4.07
(1H, m); 2.55 (1H, m); 2.38 (2H, m); 2.2 (1H, m); 2.02 (2H, m); 1.84 (1H, t, J=5.5);
(1H, m); 1.79 (1H, m); 1.68 (1H, m); 1.63 (1H, m); 1.38 (9H, s); 1.33 (1H, d, J=10);
1.24 (3H, s); 1.22 (2H, s); 0.85 (3H, d, J=6.4); 0.83 (3H, d, J^=6.4); 0.81 (3H, s).
Carbamic acid benzyl ester, N-[(1S,2R)-1-[[[(lR)-1-[(3aS14S,6S,7aR)-hexahydro-
3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-yl]-3-
methylbutyl]amino]carbonyl]-2-hydroxypropyl].


[00199] M.p. 57-60 °C. 1H NMR (DMSO-d6): 8.66 (1H, s); 7.40-7.29 (5H, m);
7.09 (1H, d, J=8.75); 5.06 (2H, s); 4.90 (1H, J=5.68); 4.11-3.99 (2H, m); 3.91-3.77 (1H,
m); 2.58-2.53 (1H, m); 2.26-2.14 (1H, m); 2.07-1.97 (1H, s); 1.84 (1H, t, J=5.52); 1.81-
1.75 (1H, m); 1.73-1.58 (2H, m);1.33 (2H, d, J=10.1); 1.27-1.20 (7H, m); 1.06 (3H, t,
]=627); 0.91-0.79 (9H, m).

[00200] (2S)-2-[(l,l-Dimethylethoxycarbonyl)amino]-3-[(4-
methylbenzoyl)amino]-propanoic acid, (650 mg, 2 mmol, 12 eq.) of Example G.6, was
dissolved in DMF dry (15 ml), under nitrogen, and TBTU (640 mg, 2 mmol, 12 eq.)
was added at r.t. The mixture was cooled at 0°-5°C with ice bath and NMM (0.55 ml, 5
mmol, 2.5eq.) and (1R)-1-[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimemyl-4,6-methano-
1,3,2-benzodioxaborol-2-yl]-3-methylbutylamine hydrochloride salt, (500 mg, 1.65
mmol, 1 eq.) of Example A.1, were added. The mixture was stirred overnight, poured in
water (200 ml) and extracted with ethyl acetate (100 ml). The organic layer was washed
with the following solutions: citric acid 2% (20 mL), sodium bicarbonate 2% (20 ml),

NaCl 2% (20 ml). The organic solution was dried over sodium sulphate anhydrous,
filtered and evaporated to give 740 mg of glassy solid (quantitative yleld).
1H NMR (DMSO-d6) 8.76 (1H, br); 8.28 (1H, t, J=5.31 Hz);7.71 (2H, d, J=7.9); 7.26
(2H, d, J=7.9); 6.97 (1H, d, J=8.0); 4.27 (1H, m); 4.07 (1H, dd, J=8.2, 1.5); 3.48 (2H,
m), 2.58 (1H, m); 2.35 (3H, s); 2.19 (1H, m); 2.02 (1H, m); 1.83 (1H, t, J=4.9); 1.78
(1H, m); 1.62 (2H, m); 1.35 (12H, m); 1.24 (3H, s); 1.23 (3H, s); 0.82 (3H, d); 0.80 (3H,
d); 0.78 (3H, s).

[00201] 2-S-[(1,1-dimethylethoxycarbonyl)amino]-3-(hexanoylamino)propionic
acid, (300 mg, 1 mmol, 1.2 eq.) of Example G.7 was dissolved in DMF dry (25 ml),
under nitrogen, and TBTU (318 mg, 1 mmol, 1.2 eq.) was added at r.t. The mixture was
cooled at 0°-5°C with ice bath and NMM (0.27 ml, 2.47 mmol, 2.47eq.) and (1R)-1-
[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trunethyl-4,6-methano-1,3,2-benzodioxaborol-2-
yl]-3-methylbutylamine hydrochloride salt, (250 mg, 0.82 mmol, 1 eq.) of Example A.l,
were added. The mixture was stirred 3h, poured in water (150 ml) and extracted with
ethyl acetate (100 ml). The organic layer was washed with the following solutions: citric
acid 2% (50 mL), sodium bicarbonate 2% (50 ml), NaCl 2% (50 ml); The organic
solution was dried over sodium sulphate anhydrous, filtered and evaporated to give 450
mg of glassy solid. Yield quantitative.
Analytical data:
1HNMR(DMSO-d6).
δH: 8.71 (1H, br d, J=2.6 Hz); 7.73 (1H, br t, J=5.9 Hz); 6.81 (1H, d, J= 8.2); 4.10 (2H,

m); 3.24 (2H, m); 2.56 (1H, m); 2.19 (1H, m); 2.03 (3H, m); 1.83 (1H, t, J=5.5); 1.78
(1H, m); 1.64 (2H, m); 1.47 (2H, m); 1.36 (9H, s);1.4-1.15 (9H, m); 1.24 (3H, s); 1.21
(3H); 0.83 (9H, m); 0.79 (3H, s)

[00202] 2-S-[(1,1-dimetoylemoxycarbonyl)amino]-3-(4-
fluorosulfonylamino)propionic acid, (1.39 g, 3.83 mmol, 1.2 eq.) of Example G.8, was
dissolved in DMF dry (20 ml), under nitrogen, and TBTU (1.23 g, 3.83 mmol, 1.2 eq.)
was added at r.t. The mixture was cooled at 0°-5°C with ice bath and NMM (1 ml, 9.57
mmol, 3eq.) and (lR)-1-[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-4,6-methano-
1,3,2-benzodioxaborol-2-yl]-3-methylbutylamine hydrochloride salt, (0.96 g, 3.19
mmol, 1 eq.) of Example A.1, were added. The mixture was stirred 2h, poured in water
(200 ml) and extracted with ethyl acetate (100 ml). The organic layer was washed with
the following solutions: citric acid 2% (50 mL), sodium bicarbonate 2% (50 ml), NaCl
2% (50 ml). The organic solution was dried over sodium sulphate anhydrous, filtered
and evaporated with diethyl ether to give 1.5g of white solid. Yield 77%.
Analytical data:
1HNMR (DMSO-d6).
ΔH: 8.54 (1H, d, J=2.9 Hz); 7.91 (2H, m); 7.75 (1H, t, J=5.9); 7.50 (2H, t, J=8.8); 6.83
(1H, d, J=8.4); 4.19 (1H, br d, J=8.2); 4.14 (1H, m); 3.01 (2H, m); 2.69 (1H, m); 2.25
(1H, m); 2.09 (1H, m); 1.90 (1H, t, J=5.7); 1.85 (1H, m); 1.8-1.6 (2H, m); 1.5-12 (5H,
m); 1.43 (9H, s); 1.29 (6H, s); 0.89 (6H, d, J=6.4); 0.86 (3H, s).



[00203] 2-S-[(1,1-dimeihylethoxycarbonyl)amino]-3-(3,4-
dimethoxyphenylacetamido)-propionic acid, (0.73 g, 1.90 mmol, 1.2 eq.) of Example
G.9, was dissolved in DMF dry (20 ml), under nitrogen, and TBTU (0.61 g, 1.90 mmol,
12 eq.) was added at r.t. The mixture was cooled at 0°-5°C with ice bath and NMM
(0.52 ml, 4.7 mmol, 2.5 eq.) and (1R)-1-[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-
4,6-methano-1,3,2-benzodioxaborol-2-yl]-3-methylbutylamine hydrochloride salt, (0.47
g, 1.6 mmol, 1 eq.) of Example A.1, were added. The mixture was stirred 2h, poured in
water (200 ml) and extracted with ethyl acetate (100 ml). The organic layer was washed
with the following solutions: citric acid 2% (50 mL), sodium bicarbonate 2% (50 ml),
NaCl 2% (50 ml). The organic solution was dried over sodium sulphate anhydrous,
filtered and evaporated with diethyl ether to give 0.95g of crude that was purified by
silica gel chromatography (eluent ethyl acetate) to give 0.3 g of white foam. Yield 30%.
Analytical data: TLC silica gel (eluent ethyl acetate 100%, R.f.=0.50)
1H NMR (DMSO-d6).
δH: 8.69 (1H, d, J=2.6 Hz); 7.90 (1H, t, J=5.7); 6.85 (2H, m); 6.74 (1H, dd, J=1.5, 8.1);
6.85 (3H, m); 4.12 (2H, m); 3.73 (3H, s); 3.72 (3H, s); 3.34 (2H, s); 3.31 (2H, m); 2.58
(1H, m); 2.20 (1H, m); 2.03 (1H, m); 1.85 (1H, t, J=5.3); 1.79 (1H, m); 1.66 (2H, m);

1.38 (9H, s); 1.40-1.15 ( 3H, m); 1.25 (3H, s); 123 (3H, s); 0.83 (6H, d, J=6.6); 0.81
(3H,s).

[00204] 2-S-[(1,1-dimethyletfioxycarbonyl)amino]-3-(3-phenylureido)propionic
acid, (0.41 g, 1.26 mmol, 1.2 eq.) of Example G.10, was dissolved in DMF dry (20 ml),
under nitrogen, and TBTU (0.40 g, 1.26 mmol, 1.2 eq.) was added at r.t. The mixture
was cooled at 0°-5°C with ice bath and NMM (0346 ml, 3.15 mmol, 2.5 eq.) and (1R)
l-[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-berizodioxaborol-2-
yl]-3-methylbutylamine hydrochloride salt, (0.31 g, 1 mmol, 1 eq.) of Example A.1,
were added. The mixture was stirred 2h, poured in water (200 ml) and extracted with
ethyl acetate (100 ml). The organic layer was washed with the following solutions: citric
acid 2% (50 mL), sodium bicarbonate 2% (50 ml), NaCl 2% (50 ml). The organic
solution was dried over sodium sulphate anhydrous, filtered and evaporated with diethyl
ether (50 ml) to give 0.58g of white solid. Yield 96.6%.
Analytical data: TLC silica gel (eluent ethyl acetate 100%, R.f.=0.47), m.p. I28°-130°C.
1H NMR (DMSO-d6).
δH: 8.79 (1H, d, J=2.7 Hz); 8.69 (1H, s); 7.38 (2H, d, J= 7.9); 7.22 (2H, t, J= 8.1); 7.00
(1H, d, J= 8.1); 6.90 (1H, t, J=73); 6.16 (1H, t, J=5.7); 4.12 (2H, m); 3.45 (1H, m); 3.17
(1H, m); 2.60 (1H, m); 2^1 (1H, m); 2.04 (1H, m); 1.85 (1H, t, J=5.3); 1.79 (1H, m);
1.66 (2H, m); 1.38 (9H, s); 1.40-1.15 (3H, m); 1.26 (3H, s); 1.23 (3H, s); 0.84 (6H, d,
J=6.6); 0.81 (3H, s).

Example B.9
Synthesis of Farther Compounds
[00205] Following the procedures of Examples B.4-B.8, the following
compounds can be prepared by reaction of (1R)-1-[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-
trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-yl]-3-methylbutylaniine hydrochloride
salt of Example A.1 and intermediates of Examples G.l 1, G.12 and G.13.




[00206] This compound has been prepared following the procedure of Exampe
B.l Method B starting from (1R)-1-[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-4,6-
methano-1,3,2-benzodioxaborol-2-yl]-3-methylbutylamine hydrochloride salt of
Example A.1 and commercially available N-(1,1-dhnethylethoxycarbonyl)glycine.

1H-NMR (DMSO-d6): 8.84 (1H, s); 7.08 (1H, t, J=5.93 Hz); 4.06 (1H, d, J=7.48 Hz);
3.67 (2H, t, J=5.32 Hz); 2.60-2.48 (1H, m); 2.24-2.16 (1H, m); 2.06-1.96 (1H, m); 1.84
(1H, t, J=5.50 Hz); 1.82-1.76 (1H, m); 1.74-1.58 (2H, m); 1.39 (10H, bs); 123 (9H, d,
J=8.18 Hz); 0.87-0.83 (6H, m); 0.82 (3H, bs).

Method A
[00207] A 4 N solution of hydrogen chloride in dioxane (15 ml) was added to a
solution of carbamic acid 1,1-dimethylethyl ester, N-[(1S)-1-[[[(1R)-1-
[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-4,6-rnethano-1,3,2-benzodioxaborol-2-
yl]-3-methylbutyl]ammo]carbonyl]-4-[[imino(nitroarnino)methyl]amino]butyl]- of
Example B.1, (4.04 g, 7.06 mmol) in a mixture of dioxane (40 ml) and diethyl ether (7
ml), while cooling at 0°C. The reaction mixture was allowed to warm to room
temperature and stirred for further 4 hours. The solvent was removed by rotary
evaporation, the residue was treated with diethyl ether (50 ml) and the mixture was
stirred at r.t. for three days. The resulting solid was collected by filtration affording 3.18
g of pure product (90% yleld)
Method B
[00208] Carbamic acid 1,1-dimethylethyl ester, N-[(1S)-1-[[[(1R)-1-
[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-
yl]-3-methylbutyl]-amino]-carbonyl]-4-[[imino(nitroamino)-methyl]-amino]butyl]- of


Example B.1, (3 g, 5.3 mmol) was dissolved in Et20 (40 mL) and a solution of about
10% HCl in Et20 (20 mL) was added dropwise at 0°C under nitrogen. The reaction
mixture was allowed to warm to room temperature and to stir for further 5 hours. The
solvent was decanted and the residue, washed twice with Et20 (20 mL), was dried in
vacuo to give the title compound as a white powder (2.43 g, yleld 91%).
1H NMR (DMSO-d6): 8.56 (2H, br); 8.22 (3H, br); 7.97 (2H, br); 4.28 (1H, dd, J=8.6
Hz, 2.01); 3.77 (1H, m); 3.04 (1H, m); 2.28 (1H, m); 2.11 (2H, m), 1.92 (1H, t, J=5.5);
1.83 (1H, m); 1.79-1.59 (4H, m); 1.59-1.37 (3H, m); 1.31 (4H, s); 1.24 (3H, s); 1.19
(1H, d, J=10.4); 0.88 (3H, d, J=6.0); 0.86 (3H, d, J=6.0); 0.81 (3H, s).

[00209] Carbamic acid 1,1-dimethylethyl ester, N-[(1S)-1-[[[(1R)-1-
[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-4,6-melhano-1,3,2-benzodioxaborol-2-
yl]-3-memylbutyl]amino]carbonyl]-4-[[imbo(ni1roamino)methyl]amino]buryl]- of
Example B.l, (3.1 g, 5.48 mmol) was carefully dissolved, under nitrogen at 0°C, in 20
mL of HCl 37%; the resultant mixture was allowed to warm to room temperature and to
stir overnight. The reaction mixture was washed with Et2O until complete removal of
pinanediol; the aqueous solution was concentrated to dryness and dried in vacuo to
afford 1.82 g (4.93 mmol, yleld 90%) of the title compound, used without further
purification.

1H NMR (DMSO + DaCH-TFA): 3.78 (m, 1H); 3.19 (m, 2H); 3.09 (m, 1H); 1.71 (m,
2H); 1.70-1.48 (m, 3H); 1.49-1.23 (m, 2H); 0.89 (d, J=5.8 Hz, 3H); 0.88 (d, J=5.8 Hz,
3H).
Example C.3
Synthesis of further intermediates
[00210] Starting from the appropriate intermediate and following either the
procedures described in the Example C.l the intermediates reported below were
prepared:

1H NMR (DMSO-d6) δH: 8.62 (1H, d, J=5.0 Hz); 8.17 (3H, d, J=3.5); 4.28 (1H, dd,
J=8.8, 1.8); 3.78 (1H, m); 3.52 (1H, m); 3.00 (1H, m); 2.28 (1H, m); 2.10 (1H, m); 1.92
(1H, t, J=5.7); 1.84 (1H, m); 1.75-1.62 (2H, m); 1.43 (1H, m); 1.31 (3H, s); 1.25 (3H, s);
1.22 (1H, d, J=10.6); 1.14 (3H, d, J=6.2); 0.88 (3H, d, J=6.4); 0.86 (3H, d, J=6.4); 0.81
(3H,s)
(2S)-2-Amino-5-ureidopentanamide, N-[(1R)-1-[(3aS,4S, 6S, 7aR)-hexahydro-3a, 5,5-
trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-yl]-3-methylbutyl]; hydrochloride salt


[00211] 1H NMR (DMSO-d6) 8.51(1H, d, J= 5.1Hz); 8.17 (3H, br); 6.1 (1H, br);
4.27 (1H, dd, J=8.6 Hz, 1.8); 3.73 (1H, m); 2.99 (1H, m); 2.94 (2H, t); 2.27 (1H, m);
2.10 (1H, m), 1.92 (1H, t, J=5.5); 1.82 (1H, m); 1.75-1.15 (9H, m); 1.30 (3H, s); 1.23
(3H, m); 0.87 (3H, d, J=6.0); 0.85 (3H, d, 1=6.0); 0.80 (3H, s).

[00212] 1H-NMR (DMSO-d6): 8.46-8.41 (1H, m); 8.06 (3H, bs); 7.67 (1H, s);
7.26 (1H, s); 4.30-4.25 (1H, m); 4.08-4.02 (1H, m); 2.96 (1H, m); 2.60-2.52 (1H, m);
2.36-2.24 (1H, m); 2.20-2.10 (1H, m); 1.95 (1H, t, J=5.5); 1.88-1.83 (1H, m); 1.75-1.60
(2H, m); 1.46-1.36 (1H, m); 1.32 (3H, s); 1.30-1.18 (6H, m); 0.86 (6H, t, 1=6.1); 0.82
(3H,s).
2-Aminoacetcmide,N-[(lS,2R)-1-[[[(1R)-1-[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-
trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-yl]-1-methylbutyl]; Hydrochloride salt


1H-NMR (DMSO-d6): 8.50 (1H, s ); 8.20 (3H, bs); 4.29 (1H, d, J=7.70 Hz); 3.15 (2H,
bs); 3.05 (1H, s); 2.36-2.24 (1H, m); 2.20-2.10 (1H, m); 1.95 (1H, t, J=5.38 Hz); 1.85
(1H, s); 1.75-1.60 (2H, m); 1.50-1.38 (1H, m); 1.35-1.30 (3H, m); 1.28-1.25 (4H, ra);
1.24-1.17 (1H, m); 0.86 (6H, t, J=5.94 Hz); 0.84 (3H, s).

[00213] (2S)-2-[(1, 1 -Dimethylethoxycarbonyl)amino]-3-[(4-methylbenzoyl)-
amino]-propanamide, N-[(1R)-1-[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethy]-4,6-
methano-1,3,2-benzodioxaborol-2-yl]-3-methylbutyl]-, Example B.4, (740 mg, 1.65
mmol, 1 eq.), was dissolved in 1,4-dioxane (20 ml). To this solution, HC1 4N in 1,4-
dioxane (5 ml, 19.8 mmol, 12 eq.) was added and the solution stirred overnight at r.t.
The solvent was removed under reduced pressure to give 800 mg of a glassy solid
(quantitative yleld).
1H NMR (DMSO-d6) 8.63 (1H, d, J=5.5 Hz); 8.38 (1H, t, J=8.4 Hz);8.34 (3H, br); 7.80
(2H, t, J=8.2); 7.28 (2H, d, J=8.2 Hz); 4.15 (1H, dd, J=8.8,1.8); 4.02 (1H, br); 3.66 (1H,
m); 3.55 (1H, m); 2.99 (1H, m); 2.35 (3H, s); 2.19 (1H, m); 2.06 (1H, m); 1.86 (1H, t,
J=5.7); 1.80 (1H, m); 1.64 (2H, m); 1.41 (1H, m); 1.33-1.19 (2H, m); 1.27 (3H, s), 1.21
(3H, s); 1.16 (1H, d, J=l0.6); 0.82 (3H, d); 0.80 (3H, d); 0.78 (3H, s).


[00214] 2-S-[(1,1-dimethylethoxycarbonyl)amino]-3-
(hexanoylamino)propionamide, N-[(lS)-1-[[(1R)-1 -[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-
trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-yl]-3-methylbutyl]amino]carbonyl], of
Example B.5, (450 mg, 0.8 mmol, 1 eq.), was dissolved in 1,4-dioxane (15 ml). To this
solution, HC1 4N in 1,4-dioxane (2.45 ml, 0.98 mmol, 12 eq.) was added and the
solution stirred overnight at r.t.. The solvent was removed under reduced pressure to
give 400 mg of a glassy solid. Yield quantitative.
Analytical data: 1H NMR (DMSO-d6).
δH: 8.54 (1H, d, J=5.3 Hz); 8.18 (3H, br); 7.74 (1H, t, J=5.7); 4.29 (1H, dd, J=1.8, 8.8);
3.83 (1H, m); 3.40 (2H, m); 3.00 (1H, m); 2.29 (1H, m); 2.11 (1H, m); 2.08 (2H, t,
J=7.5); 1.93 (1H, t, J=5.5); 1.84 (1H, m); 1.75-1.15 (11H, m); 1.32 (3H, s); 1.24 (3H, s);
0.86 (3H, d, J=6.6); 0.84 (3H, d, 3=6.6); 0.81 (3H, s).
Example C.6
2-S-amino-3-(4-fluorosulfonylamino)propionamide, N-[(1S)-1-[[(1R)-1-
[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-
2-yl]-3-methylbutyl]amino]carbonyll, hydrochloride salt.


[00215] 2-S-[(1,1-dimethylethoxycarbonyl)amino]-3-(4-
fluorosulfonylamino)propionaraide, N-[(lS)-1-[[(1R)-1-[(3aS,4S,6S,7aR)-hexahydro-
3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-yl]-3-
methylbutyl]amino]carbonyl], of Example B.6, (0.7 g, 1.14 mmol, I eq.), was dissolved
in 1,4-dioxane (20 ml). To this solution, HC14N in 1,4-dioxane (3.4 ml, 13.68 mmol, 12
eq.) was added and the solution stirred overnight at r.t. The solvent was removed under
reduced pressure to give 440 mg of a white solid. Yield 71%. Analytical data:
1H NMR (DMSO-d6).
ΔH: 8.54 (1H, d, J=5.5 Hz); 8.26 (3H, br); 7.89 (3H, m); 7.48 (3H, t, J=8.8); 4.26 (1H,
dd, J=1.3, 8.6); 3.84 (1H, m); 3.06 (2H, m); 2.97 (1H, m); 2.25 (1H, m); 2.03 (1H, m);
1.83 (2H, m); 1.64 (2H, m); 1.42 (1H, m); 1.35-1.15 (3H, m); 1.28 (3H, s); 1.22 (3H, s);
1.11 (1H, d, J=10.8); 0.85 (6H, m); 0.80 (3H, s).


[00216] 2-S-[(1,1-dimethylethoxycarbonyl)amino]-3-(3,4-
dimethoxyphenylacetamido)-propionamide, N-[(1S)-1-[[(1R)-1-[(3aS,4S,6S,7aR)-
hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-yl]-3-
methylbutyljaminojcarbonyl], of Example B.7, (0.3 g, 0.47 mmol, 1 eq.), was dissolved
in 1,4-dioxane (20 ml). To this solution, HC14N in 1,4-dioxane (1.43 ml, 5.71 mmol, 12
eq.) was added and the solution stirred overnight at r.t. The solvent was removed under
reduced pressure, diethyl ether was added and evaporated to give 230 mg of a white
solid. Yield 85%.
Analytical data:
1H NMR(DMSO-d6).
δH: 8.57 (1H, br); 8.12 (3H, br); 7.91 (1H, t, J=5.7 Hz); 6.86 (2H, m); 6.76 (1H, dd,
J=1.8, 8.2); 4.26 (1H, br d, J=7.3); 3.82 (1H, m); 3.72 (3H, s); 3.71 (3H, s); 3.36 (2H, s);
3.34 (2H, m); 2.99 (1H, m); 2.26 (1H, m); 2.10 (1H, m); 1.92 (1H, t, J=5.3); 1.83 (1H,
m); 1.67 (2H, m); 1.45-1.15 ( 3H, m); 1.31 (3H, s); 1.23 (3H, s); 0.86 (3H, d, J=6.6);
0.84 (3H, d, 3=6.6); 0.80 (3H, s).

2-S-[( 1,1 -dimethylethoxycarbonyl)amino]-3 -(3-phenylureido)propionamide, N-[( 1S)-1 -
[[(1R)-1-[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-
benzodioxaborol-2-yl]-3-methylbutyl]amino]carbonyl], of Example B.8, (0.58 g, 0.1
mmol, 1 eq.), was dissolved in 1,4-dioxane (25 ml). To this solution, HC1 4N in 1,4-

dioxane (3 ml, 12.1 mmol, 12 eq.) was added and the solution stirred overnight at r.t..
The solvent was removed under reduced pressure, diethyl ether was added and
evaporated to give 0.52 g of desired product. Yield 100%.
Analytical data:
1HNMR (DMSO-d6).
δH: 8.82 (1H, s); 8.59 (1H, d, J=5.7 Hz); 8.18 (3H, br); 7.40 (2H, d, J= 7.9); 7.22 (2H, t,
J= 8.1); 6.90 (1H, t, J=7.3); 6.31 (1H, t, J=5.7); 4.26 (1H, dd, J=1.5, 8.6); 3.89 (1H, m);
3.48 (1H, m); 3.36 (1H, m); 3.01 (1H, m); 2.24 (1H, m); 2.10 (1H, m); 1.92 (1H, t,
J=5.3); 1.82 (1H, m); 1.67 (2H, m); 1.50-1.15 (3H, m); 1.31 (3H, s); 1.21 (3H, s); 0.85
(3H, d, J=6.6); 0.84 (3H, d, J=6.6); 0.79 (3H, s).
Example C.9
Synthesis of further compounds
[00151] Following the procedures of Examples C.4-C.8, the following
compounds can be prepared starting from intermediates of Example B.9.




[00217] To a solution of decanoic acid (0.84 g, 4.83 mmol) in anhydrous DMF
(30 ml) HATU (1.84 g, 4.83 mmol) and HOAt (0.66 g, 4.83 mmol) were added. After

stirring at room temperature for 15 minutes the mixture was cooled at 0°C and N-
methylmorpholine (1.33 ml, 12.1 mmol) was added. After further 20 minutes (2S)-2-
amino-5-[[hnmo(nitroammo)methyl]amino]pentanamide, N-[(1R)-1-[(3aS,4S,6S,7aR)-
hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-yl]-3-methylbutyl]-
hydrochloride salt of Example C.l (2.2 g, 4.03 mmol) was added. The mixture was
allowed to warm to room temperature and stirred for 5 hours, then diluted with ethyl
acetate (150 ml), washed with a 2% solution of citric acid (2x 100 ml), 2% solution of
NaHCO3 (2x 100 ml), and 2% solution of NaCl (2x 100 ml). The organic phases were
dried over sodium sulfate and concentrated. The residue was purified by column
chromatography eluting with AcOEt/n-Hexane mixtures from 80/20 to 100/0. The
resulting solid was triturated with diethyl ether, collected by filtration and dried under
vacuum giving 1.8 g of product (72% yleld).
M.P. 89-94 °C
El. Anal. Calculated: C 59.99% H9.26% N 13.54%
Found C 59.47% H9.51% N 13.42%
1H NMR (DMSO-d6): 8.82 (1H, d, J=2.7 Hz); 8.53 (1H, br); 7.99 (1H, d, J=8.05); 7.88
(2H, br); 4.33 (1H, m); 4.08 (1H, dd, J=1.6, 8.6); 3.14 (2H, m); 2.56 (1H, m); 2.20 (1H,
m); 2.11 (2H, m); 2.01 (1H, m); 1.84 (1H, t, J=5.7); 1.79 (1H, m); 1.74-1.58 (3H, m);
1.57-1.39 (5H, m); 1.32 (1H, d, J=9.9); 1.24 (19H, m); 0.85 (9H, m); 0.80 (3H, s).
[00218] Starting with the (2S)-2-amino-5-[[imino(nitroamino)methyl]amino]-
pentanamide, N-[(1R)-1-[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-4,6-methano-
1,3,2-benzodioxaborol-2-yl]-3-methylbutyl] hydrochloride salt of Example C.l and the
appropriate carboxylic acids, further compounds prepared fundamentally in accordance
with the above experimental procedures are reported in Table D-l.









[00219] Following the above described procedure for Example D.l and using as
starting material the (2S)-2-amino-5-[[imino(nitroamino)methyl]amino]pentanamide, N-
[(1R)-1-[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-
benzodioxaborol-2-yl]-3-methylbutyl]- hydrochloride salt of Example C.l and the
appropriate carboxylic acids, the compounds reported in Table D-l A are prepared.




[00220] To a solution of 10-(l,3-Dioxo-l,3-dihydro-isoindol-2-yl)-decanoic acid
(353 mg, 1.11 mmol), prepared according to Example G.l, in anhydrous
dichloromethane (10 ml), N-methylmorpholine was added (122 ul, 1.11 mmol). The
mixture was cooled to -15°C, then isobutyl chloroformate (144 ul, 1.11 mmol) was
slowly added. After 15 minutes (2S)-2-amino-5-
[[imino(nitroamino)methyl]amino]pentanamide, N-[(1R)-1-[(3aS,4S,6S,7aR)-
hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-yl]-3-methylburyl]-
hydrochloride salt of Example C.l (508 mg, 1.01 mmol) and further N-
methylmorpholine (122 ul, 1.11 mmol) were added. The reaction mixture was stirred at
-15 to 10 °C for 4h, then concentrated to small volume and partitioned between ethyl
acetate (20 ml) and water (10 ml). The aqueous phase was further extracted with ethyl

acetate (10 ml). The combined organic phases were dried over sodium sulfate and
concentrated. The residue was taken up with ethyl acetate (3 ml) and the solution was
dropwise added to hexane (120 ml) while stirring at room temperature. The solid was
collected by decantation and dried under vacuum (730 mg, 94%).
1H NMR (DMSO-d6): 8.81 (1H, d, J=2.7 Hz); 8.52 (1H, br); 7.98 (1H, d, J=8.05); 7.88
(2H, br); 7.85 (4H, m); 4.34 (1H, m); 4.06 (1H, dd, J=7.1); 3.56 (2H, t, J=7.14); 3.14
(2H, m); 2.55 (1H, m); 2.19 (1H, m); 2.10 (2H, t, J=7.14); 2.0 (1H, m); 1.82 (1H, t,
J=5.7); 1.78 (1H, m); 1.73-1.35 (10H, m); 1.31 (1H, d, J=9.9); 1.24 (19H, m); 0.84 (9H,
m); 0.79 (3H, s).
[00221] Further compounds prepared fundamentally in accordance with the above
experimental procedures are reported in Table D-2.



[00222] Further compounds prepared according to the above reported procedure
in Example D.2 are reported in Table D-2A The compound of Example D.2.6, was
prepared starting from 2-aminoacetamide, N-[(lS)-1-[[[(1R)-1-[(3aS,4S,6S,7aR)-
hexahydro-3a,5,5-trimethyM,6-memano-1,3,2-benzodioxaboroI-2-yl]-3-methylbutyl]-
amino]carbonyl]-4-[[imino(nitroamino)methyl]-amino]-butyl], hydrochloride salt of
Example D.14. The compounds of example D.2.7 and D.2.8 were prepared from 2-
aminoacetamide, N-[(lS,2R)-1-[[[(1R)-1-[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-
4,6-methano-1,3,2-benzodioxaboroI-2-yl]-1-methylbutyl]; hydrochloride salt of
Example C.3. The compounds of Examples 2.9 and 2.10 were prepared from (2S)-2-
amino-5-ureidopentanamide, N-[(1R)-1-[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-

4,6-methano-1,3,2-benzodioxaboroI-2-yl]-3-methylbutyl]; hydrochloride salt of
Example C.3






[00223] PS-Carbodiimide (N-cyclohexylcarbodiimide-N'-propyloxymethyl
polystyrene, 769 mg, 1 mmol, loading 1.31 mmol/g) and HOAt (1-Hydroxy-7-
azabenzotriazole, 115 mg, 0.85 mmol) were added to a solution of 11-cyanoundecanoic
acid (115 mg, 0.54 mmol) in dichloromethane (DCM) (9 mL). After stirring for 10
minutes (2S)-2-amino-5-[[imino(nitroamino)methyl]amino]pentanamide, N-[(1R)-1-
[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-
yl]-3-methylbutyl]-, hydrochloride salt of Example C.l (251 mg, 0.50 mmol) and

DIPEA (0.128 ml, 0.75 mmol) were added. The suspension was shaken overnight at
room temperature and then the PS-Carbodiimide was filtered off and washed several
times with DCM (4x6 mL).
[00224] The organic phase was passed through a VARIAN CHEM ELUT
cartridge for liquid-liquid extraction pre-conditioned with saturated aqueous NaHCO3
and finally washed with DCM (15 mL). The solvent was evaporated and the crude
reaction was purified with normal-phase ISOLUTE SPE-SI column (DCM 9, MeOH 1)
to afford 200 mg of the desired compound (yleld 61%).
NMR (CDC13): 7.53 (s, br, 2H); 7.36 (d, br, J=4.7 Hz, 1H); 6.88 (d, J=8.2 Hz, 1H); 4.46
(m, 1H); 4.15 (dd, J=8.5, 1.9 Hz, 1H); 3.19 (m, 2H); 2.93 (m, 1H); 2.23 (t, J=7.2 Hz,
2H); 2.21 (m, 1H); 2.09 (t, J=7.5, 2H); 2.04 (m, 1H); 1.88 (t, J=5.4 Hz, 1H); 1.77 (m,
1H); 1.69 (m, 1H); 1.64-1.43 (m, 9H); 1.40-1.26 (m, 4H); 1.26 (s, 3H); 1.24-1.12 (m,
16H); 0.80 (d, J=6.6,3H); 0.79 (d, J= 6.6,3H); 0.73 (s, 3H).
LC-MS 659.7, MH+. ESI POS; AQA; spray 4 kV/skimmen 20V/probe 250 C.
[00225] Further compounds prepared fundamentally in accordance with the above
experimental procedures are reported in Table D-3.



































































[00226] Further compounds prepared according to the above Example D.3 are
reported in Table D-3A.
Table D-3A





[00227] To a solution of (2S)-2-amino-5-[[imino(nitroamino)methyl]-amino]-
pentanamide, N-[(1R)-1-[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-4,6-methano-
l,3,2-benzodioxaboroI-2-yl]-3-methylbutyl]-, hydrochloride salt of Example C.l (70
mg, 0.14 mmol) in DCM (4 mL), TEA (0.04 mL, 0.31 mmol) and naphthalene-2-
sulfonyl chloride (35.1 mg, 0.16 mmol) were added at room temperature. After stirring
overnight a second portion of TEA (0.04 mL, 0.31 mmol) and naphthalene-2-sulfonyl
chloride (35.1 mg, 0.16 mmol) was added and the reaction was allowed to stir for a
further night. The reaction mixture was then washed with saturated aqueous K2CO3 and
the separated organic phase was concentrated to dryness. The reaction crude was

purified on SPE-SI normal phase cartridge to afford the title compound (64 mg, yleld
70%).
NMR (CDCl3): 8.42 (s, br, 1H); 7.96 (dd, J=7.5, 2.2 Hz, 1H); 7.95 (d, J=8.5 Hz, 1H);
7.89 (d, br, J=7.9 Hz, 1H); 7.81 (dd, J=8.8, 1.9 Hz, 1H); 7.68-7.57 (m, 2H); 7.23 (s br,
2H); 6.23 (s br, 1H); 6.03 (d, J=8.5 Hz, 1H); 4.19 (dd, J=9.1, 2.2 Hz, 1H); 3.92 (s, br,
1H); 3.31 (m, 2H); 2.97 (m, 1H); 2.26 (m, 1H); 2.12 (m, 1H); 1.93 (t, J=5.7 Hz, 1H);
1.90-1.68 (m, 6H); 1.30 (s, 3H); 1.28 (m, 1H); 1.25 (s, 3H); 1.06 (m, 4H); 0.79 (s, 3H);
0.58 (d, J=9.4 Hz, 3H); 0.56 (d, J=9.4 Hz, 3H).
LC-MS 657.3, MH+, ESI POS; AQA; spray 4 kV/skimmer: 20 V/ probe 250 C.
[00228] Further compounds prepared fundamentally in accordance with the above
experimental procedures are reported in Table D-4.



Example D.4.9
Naphthalene-2-sulfonamide,N-[(1S,2R)-1-[[[(1R)-1-[(3aS,4S,6S,7aR)-hexahydro-
3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-yl]-3-
methylbutyl]amino]carbonyl]-2-hydroxypropyl].


[00229] Naphthalene-2-sulfonyl chloride (144 mg, 0.637 mmol) was added to a
solution of (2S)-amino-(3R)-hydroxy-butyric amide, N-[(1S)-1-[[[(1R)-1-
[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-
yl]-3-memylbutyl]amino]-carbonyl] hydrochloride salt, of Example C.3, and NMM
(0.175 ml, 1.59 mmol) in anhydrous dichloromethane, while stirring at 0°C under
nitrogen. After 6 hours the mixture was allowed to warm to room temperature and
stirred overnight. A 10% solution of NaHCO3 (10 ml) was added and the layers were
separated. The aqueous phase was further extracted with dichloromethane (5 ml). The
organic phases were washed with a 20% solution of NaH2PO4, dried over sodium sulfate
and concentrated. The residue was purified by column chromatography (Silica gel, 25 g)
eluting with a 1:1 (v/v) mixture of hexane and ethyl acetate. The product was obtained
as a white glassy solid (219 mg, 74% yleld) but still containing some pinanediol. A
sample of that product (160 mg) was triturated with a mixture of diethyl ether (3 ml) and
hexane (3 ml) affording the pure product as a white solid (80 mg, 27% yleld). M.p. 147-
149°C
1HNMR (DMSO-d6): 8.40 (1H, s); 8.28-8.22 (1H, m); 8.11 (1H, d, J=7.7); 8.05 (1H, d,
J=8.7); 8.01 (1H, d, J=7.8); 7.81 (1H, dd, J=8.7,1.7); 7.75 (1H, s br.); 7.72-7.61 (2H,
m); 4.84 (1H, s br.); 4.03 (1H, dd, J=8.5,1,7); 3.82-3.72 (2H, m); 2.41-2.33 (1H, m);
2.20-2.10 (1H,m); 2.02-1.93 (1H, m); 1.82-1.72 (2H, m); 1.58-1.50 (1H, m); 1.36-1.24
(1H, m); 1.20 (3H, s); 1.18 (3H, s); 0.99 (3H, d, J=6.1); 0.94-0.82 (2H, m); 0.77 (3H, s);
0.63 (3H, d, J=7.1); 0.61 (3H, d, J=7.1).
Example D.5
(2S)-4-[[imino(nitroamino)methyl]amino]-2-[(2-naphthylmethyl)-amino]-
pentanamide,N-[(1R)-1-[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-4,6-
methano-1,3,2-benzodioxaborol-2-yl]-3-methylbutyl].


[00230] A solution of (2S)-2-amino-5-
[[imino(nitroamino)memyl]amino]pentanamide, N-[(1R)-1-[(3aS,4S,6S,7aR)-
hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-yl]-3-methylbutyl]-,
hydrochloride salt of Example C.l (88 mg, 0.175 mmol) in MeOH (4 mL) was passed
through a ISOLUTE PSA cartridge in order to obtain the starting material as a free base.
To a solution of the free base in MeOH (4 mL), 2-naphtaldehyde (45 mg, 0.28 mmol)
and NaCNBH3 (18 mg, 0.28 mmol) were added at room temperature; AcOH was added
until the pH of the solution was 4-5. The reaction mixture was stirred overnight, then
H2O (1 mL) was added and the resulting solution was concentrated; the residue,
dissolved in AcOEt, was washed with brine and the organic phase was concentrated to
dryness. Purification by silica gel flash chromatography (DCM/MeOH/NH4OH,
97.5/2.5/0.25) of the reaction crude, afforded the desired compound (30 mg, yleld 28%).
NMR (CDCl3+D2O): 7.81 (m, 3H); 7.71 (s, br, 1H); 7.52-7.38 (m, 3H); 4.66 (s, br, 1H);
4.27 (dd, J=8.8,1.9 Hz, 1H); 3.91 and 3.83 (ABq, 2H); 3.39-3.11 (m, 3H); 2.30 (m, 1H);
2.13 (m, 1H); 1.98-1.45 (m, 8H); 1.45 (m, 2H); 1.38 (s, 3H); 1.23 (s, 3H); 1.22 (m, 1H);
0.91 (d, J=6.3 Hz, 6H); 0.81 (s, 3H).
LC-MS 607.1, MH+. ESI POS; AQA ; spray 4 kV/skimmer: 20 V/probe 250 C.
[00231] Further compounds prepared fundamentally in accordance with the above
experimental procedures are reported in Table D-5.



Example D.6
N-[(1S)-1-[[[(1R)-1-[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-4,6-methano-
1,3,2-benzodioxaborol-2-yl]-3-methylbutyl]amino]carbonyl]-4-
[[imino(nitroamino)methyl]amino]butyl]-N'-(1-naphthyl)urea.


[00232] To a solution of (2S)-2-amino-5-[[imino(nitroamino)methyl]amino]-
pentanamide, N-[(1R)-1-[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-4,6-methano-
l,3,2-benzodioxaborol-2-yl]-3-methylbutyl]-, hydrochloride salt of Example C.l (50
mg, 0.10 mmol) in CH3CN (4 mL), TEA (0.014 mL, 0.10 mmol) and naphthalene-1-
isocyanate (0.014 mL, 0.10 mmol) were added at room temperature. The reaction
mixture was stirred for 4 hours and then concentrated to dryness. The residue, dissolved
in DCM, was washed with H2O: the organic layer was separated and the solvent
removed under vacuum. Purification by silica gel flash chromatography (DCM 95,
MeOH 5) gave the title compound as a white powder (60 mg, yleld 94%).
NMR (CDCl3): 8.08 (s, br, 1H); 7.98 (m, 1H); 7.79 (m, 2H); 7.57 (d, J=8.2 Hz, 1H);
7.51-7.35 (m, 4H); 7.36 (d, J=7.5 Hz, 1H); 7.17 (s, br, 1H); 6.67 (d, br, J=6.6 Hz, 1H);
4.49 (m, 1H); 4.20 (dd, J=8.5, 1.9 Hz, 1H); 3.39 (m, 1H); 3.20 (m, 1H); 3.04 (m, 1H);
2.26 (m, 1H); 2.08 (m, 2H); 1.93 (t, J=5.6 Hz, 1H); 1.89-1.55 (m, 7H); 1.39 (m, 1H);
1.32 (s, 3H); 1.31 (m, 1H); 1.21 (s, 3H); 1.20 (m, 1H); 0.85 (d, J=6.0 Hz, 6H); 0.79 (s,
3H).
LC-MS 636.3, MH+. ESI POS; AQA; spray 4 kV/skimmer: 20 V/probe 250 °C.
[00233] Further compounds prepared fundamentally in accordance with the above
experimental procedures are reported in Table D-6.






[00234] To a suspension of PS-HOBT (1-hydroxybenzotriazole-6-
sulfonamidomethyl polystyrene, 277 mg, 0.31 mmol, loading 1.12 mmol/g) in DCM (6
mL) and DMF (0.6 mL), 3-naphthalen-2-yl-acrylic acid (91.2 mg, 0.46 mmol), DIC

(Diisopropylcarbodiimide, 0.22 mL, 1.40 mmol) and DIPEA (0.05 mL, 0.19 mmol)
were added. The suspension was shaken for 3 hours at room temperature and then the
resin was filtered under nitrogen and washed several times with DMF (3x5 mL), DCM
(3x5 mL), DMF (3x5 mL) and THF (3x5 mL). The well dried resin was suspended in
DCM (6 mL) and DMF (0.6 mL) and [(1R)-1-[[(2S)-2-amino-5-
[[imino(nitroamino)methyl]amino]-1-oxopentyl]amino]-3-methylbutyl]-boronic acid
hydrochloride salt of Example C.2 (50 mg, 0.14 mmol) and DIPEA (0.06 mL, 0.20
mmol) were added. The reaction mixture was shaken overnight at room temperature.
The resin was filtered off and washed with DMF (10 mL) and DCM (2 mL) and the
solvent was concentrated to dryness. Purification of the crude compound by ISOLUTE
SPE-SI normal phase cartridge (DCM 1, MeOH 1), afforded the title compound (25 mg,
yleld 35%).
NMR (DMSO+D20, 343 K): 8.06 (s, 1H); 7.95 (d, J=9.0 Hz, 1H); 7.94 (m, 2H); 7.72
(d, 1H); 7.61 (d, J=14.9 Hz, 1H); 7.55 (d, J=9.0 Hz, 1H); 7.55 (m, 2H); 6.89 (d, JM14.9
Hz, 1H); 4.40 (m, 1H); 3.30-3.10 (m, 3H); 1.82 (m, 1H); 1.73-1.53 (m, 4H); 1.50-1.32
(m, 2H); 0.87 (d, J=6.1 Hz, 3H); 0.86 (d, J-6.1 Hz, 3H).
LC-MS 495.0, [M-18]H+. ESI POS; AQA; spray 5 kV/skimmer: 15 V/ probe 250 C.
[00235] Further compounds prepared fundamentally in accordance with the above
experimental procedures are reported in Table D-7.



















[00236J Further compounds prepared according to the above procedure for
Example D.7 are reported in Table D-7A.

Example D.8
Decanamide, N-[(lS,2R)-1-[[[(1R)-1-[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-
4,6-methano-1,3,2-benzodioxaborol-2-yl]-3-methylbutyl]amino]carbonyl]-2-
hydroxypropyl]-


[00237] Decanoic acid (220 mg, 1.28 mmol, 1.2eq.) was dissolved in DMF dry
(15 ml) at r.t., TBTU (410 rag, 1.28 mmol, 1.2eq.) was added and the resulting solution
was stirred for 10'. The mixture was cooled at 0°-5°C, NMM (0.35 ml, 3.2 mmol, 3eq.)
was added and then (2S)-amino-(3R)-hydroxy-butyric amide, N-[(1S)-1-[[[(1R)-1-
[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-
yl]-3-methylbutyl]amino]carbonyl] hydrochloride salt, of Example C.3 , (430 mg, 1.067
mmol, leq.) was added. The solution was stirred for 2h, then was poured in water
(200ml) and extracted with ethyl acetate (100 ml). The organic layer was washed with
the following solutions: citric acid 2% (20 ml), sodium bicarbonate 2% (20ml), NaCl
2% (25ml). The organic solution was dried over sodium sulphate anhydrous, filtered and
evaporated under reduced pressure to give 600 mg of oil that was purified by silica gel
chromatography (ethyl acetate / n-hexane 1/1) to give 540 mg of white solid that was
suspended overnight in diethyl ether (5 ml) and n-hexane (20 ml). The suspension was
filtered to give 110 mg of white solid. Yield 20%.
Analytical data: m.p. 108°-110°C, TLC silica gel (n-hexane / ethyl acetate 1/1 r.f. 0.33).
E.A. calculated C (66.91%), H (10.26%), N (5.38%), B (2.08%); found C (66.82%), H
(10.61%), N ( 5.35%), B (1.93%).
1H-NMR (DMSO-d6) δH: 8.81 (1H, br); 7.68 (1H, d, J=8.80 Hz);4.93 (1H, d, J=5.2);
4.28 (1H, dd, J=8.8, 4.3); 4.05 (1H, dd, J=8.6, 1.8); 3.92 (1H, m); 2.52 (1H, m); 2.20
(1H, m), 2.17 (2H, t, J=7.1); 2.00 (1H, m); 1.83 (1H, t, J=5.8); 1.78 (1H, m); 1.64 (1H,
m); 1.62 (1H, m); 1.49 (2H, m>1.34 (1H, d, J=10.0); 1.31-1.17 (21H, m); 1.04 (3H, d,
J=6.4); 0.91-0.83 (9H, m); 0.81 (3H, s).
[00238] Further compounds prepared according to the above procedure include
the following:
Example D.8.1
(2S)-2-[(Benzyloxycarbonyl)amino]-4-methylpentanamide,N-[(1S,2R)-1-[[[(1R)-1-
[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-
2-yl]-3-methylburyl]aniino]carbonyl]-2-hydroxypropyl]-


[00239] Analytical data: TLC (CHCl3 9 / MeOH 1, R.f. 0.63), m.p. 38°-40°C,
E.A. calculated C (64.60%), H (8.54%), N (6.85%); found C (62.44%), H (8.24%), N
(7.47%).
1H NMR (DMSO-d6) δH: 8.78 (1H, br); 7.82 (1H, d, J=8.60 Hz); 7.52 (1H, d, J=8.1);
7.40-7.27 (6H, m); 5.02 (2H, br s); 5.00 (1H, d, J=5.1); 4.28 (1H, dd, J=8.6, J=4.2); 4.12
(1H, q, J 7.8); 4.05 (1H, dd, J=8.6, J=1.8); 3.94 (1H, m); 2.52 (1H, m); 2.19 (1H, m);
2.01 (1H, m); 1.83 (1H, t, J=5.8); 1.78 (1H, m); 1.74-1.55 (5H, m); 1.46 (2H, m); 1.32
(1H, d, J=10.1); 1.24 (3H, s); 1.22 (3H, s); 1.04 (3H, d, J=6.2); 0.91-0.82 (12H, m); 0.80
(3H, s).
Example D.8.2
10-(1,5-dioxo-1,3-dihydro-isoindol-2-yl)-decanoic -amide-N-[(lS),(2R)-2-hydroxy,
l-[[(1R)-1-[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-
benzodioxaborol-2-yl]-3-methylbutyl] aminocarbonyl]-propyl]-

[00240] Analytical data: TLC (CHC13 9 / MeOH 1 R.f. 0.83), E.A. calculated C
(66.52%), H (8.43%), N (6.37%); found C (66.76%), H (8.48%), N (6.31
1HNMR (DMSO-d6) δH: 8.80 (1H, br); 7.85 (4H, m), 7.67 (1H, d, J=8.80 Hz);4.93 (1H,
d, J=5.5), 4.28 (1H, dd, J=8.6, 4.0); 4.04 (1H, dd); 3.92 (1H, m); 3.56 (2H, t, J=8.1);
2.49 (1H, m); 2.23-2.12 (3H, m); 2.00 (1H, m); 1.82 (1H, t, S=6.6); 1.78 (1H, m); 1.73-
1.53 (5H, m); 1.48 (2H, m); 1.33 (1H, d, J=10.1); 1.31-1.17 (20H, m); 1.03 (3a d,
J=6.2); 0.84 (6H, d, J=6.6); 0.80 (3H, s).

[00241] Further compounds prepared according to the above procedures for
Example D.8, D.8.1 and D.8.2 are reported in Table D-8.







[00242] The intermediate carboxylic acids for the synthesis of examples D.8.3,
D.8.7, D.8.11, D.8.12 and D.8.13 were prepared according to literature procedures.
Compound 2,2-dimethyldecanoic acid was prepared as described by Roth et al. in J.
Med. Chem. 1992, 35, 1609-1617. Compounds 4-(3-pyridyl)benzoic acid, 3-(3-
Pyridyl)benzoic acid and 6-phenyl-2-pyridinecarboxilic acid were prepared according
the procedure described by Gong et al. in Synlett, 2000, (6), 829-831. Compound 3-
propoxybenzoic acid was prepared according the procedure described by Jones in J.
Chem. Soc. 1943,430-432.
Example D.8.18
2-Pyrazinecarboxamide,N-[(lS)-1-[[[(1R)-1-[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-
trimethyl-4,6-methano-1,3,2-beiizodioxaborol-2-yl]-3-
methylbutyl]amino)carbonyl]-2-carbamoylethyl]


[00243] This compound has been prepared essentially according to the above
procedures for Example D.8, D.8.1 and D.8.2 starting from (2S)-2-amino-3-
carbamoylpropanamide, N-[(1R)-1-[(3aS,4S,6S,7aR)-hexahydro-3a,S,5-trimethyl-4,6-
methano-1,3,2-benzodioxaborol-2-yl]-3-methylbutyl]; hydrochloride salt of Example
C.3.
1H-NMR (DMSO-d6): 9.20 (1H, d, J=1.29 Hz); 9.02 (1H, d, J=8.52 Hz); 8.91 (1H, d,
J=2.45 Hz); 8.81-8.76 (2H, m); 7.42 (1H, s); 6.95 (1H, s); 5.00-4.80 (1H, m); 4.30-4.08
(1H, m); 2.85-2.72 (1H, m); 2.62-2.56 (2H, m); 2.25-2.15 (1H, m); 2.06-1.98 (1H5 m);
1.84 (1H, t, J=5.54 Hz); 1.81-1.76 (1H, m); 1.72-1.58 (2H, m); 1.32-1.26 (1H, m); 1.23
(8H, d, J=5.36 Hz); 0.85-0.79 (9H, m).

This compound has been prepared essentially according to the above procedures for
Example D.8, D.8.1 and D.8.2 starting from (2S)-2-amino-3-carbamoylpropanamide, N-
[(1R)-1-[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-
benzodioxaborol-2-yl]-3-methylbutyl]; hydrochloride salt of Example C.3.


[00244] This compound has been prepared essentially according to the above
procedures for Example D.8, D.8.1 and D.8.2 starting from (2S)-2-amino-3-
carbamoylpropanamide, N-[(1R)-1-[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-4,6-
methano-1,3,2-benzodioxaborol-2-yl]-3-methylbutyl]; hydrochloride salt of Example
C.3.

[00245] Decanoic acid (330 mg, 1.95 mmol, 1.2 eq.) was dissolved in DMF dry,
(20 ml) and TBTU (620 mg, 1.95 mmol, 1.2 eq.) was added at r.t. under nitrogen . The
solution was stirred for 10', cooled at 0°-5°C and NMM (0.53 ml, 4.9 mmol, 3 eq.) and
(2S)-2-amino-3-[(4-methylbenzoyl)amino]propanamide, N-[(1R)-1-[(3aS,4S,6S,7aR)-.
hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-yl]-3-methylbutyl]-,
hydrochloride salt (800 mg, 1.58 mmol, 1 eq.) of Example C.4, were added and the
resulting mixture was stirred at r.t. for 3h. The solution was poured in water (200 ml)
extracted with ethyl acetate (100 ml), washed with solutions of citric acid 2% (50 ml),
sodium bicarbonate 2% (50 ml), NaCl 2% (50 ml). The organic solution was dried over

sodium sulphate anhydrous, filtered, evaporated and suspended in diethyl ether (20 ml)
for 30'. The suspension was filtered and dried to give 330 mg of white solid. Yield 33%.
M.P.: 134°C-136°C, TLC, silica gel, (eluent n-hexane/ethyl acetate, r.f. 0.5). E.A.
calculated C (69.33%), H (9.37%), N (6.74%), B (1.73%); found C (%), H (%), N
(23%), B (%).
1H NMR (DMSO-d6) 8.74 (1H, d, J=3.5 Hz); 8.25 (1H, t, J=5.6);7.95 (1H, d, J=7.9);
7.71 (2H, d, J=8.1); 7.25 (2H, t, J=8.1); 4.59 (1H, m); 4.1 (1H, dd, J=1.8, 8.8); 3.49 (2H,
m); 2.59 (1H, m); 2.35 (3H, s); 2.20 (1H, m); 2.09 (1H, t, J=7.3); 2.02 (1H, m); 1.83
(1H, t, J=5.5); 1.78 (1H, m); 1.62 (2H, m); 1.44 (2H, m); 1.36-1.21 (17H, m); 1.25 (3H,
s), 1.22 (3H, s); 0.85 (3H, t, J=6.8); 0.80 (9H, m).

[00246] Decanoic acid (170 mg, 0.98 mmol, 1.2 eq.) was dissolved in DMF dry,
(15 ml) and TBTU (310 mg, 0.98 mmol, 1.2 eq.) was added at r.t. under nitrogen . The
solution was stirred for 20', cooled at 0°-5°C and NMM (0.271 ml, 2.46 mmol, 2.5 eq.)
and 2-S-amino-3-(hexanoylamino)-propionamide, N-[(1S)-1-[[(1R)-1-
[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-
yl]-3-methylbutyl]amino]carbonyl], hydrochloride salt, (400 mg, 0.82 mmol, 1 eq.) of
Example C.5, were added and the resulting mixture was stirred at r.t. for 3h. The
solution was poured in water (150 ml) extracted with ethyl acetate (100 ml), washed
with solutions of citric acid 2% (50 ml), sodium bicarbonate 2% (50 ml), NaCl 2% (50
ml). The organic solution was dried over sodium sulphate anhydrous, filtered,
evaporated and suspended in ethyl acetate (20 ml) for 30'. The suspension was filtered
and dried to give 230 mg of white solid. Yield 47%.

Analytical data: m.p. 135°-137°C, TLC silica gel (eluent hexane /ethyl acetate 2/1, R.f.=
0.27). E.A. calculated C (67.64%), H (10.35%), N (6.96%); found C (66.93%), H
(10.29%), N (7.14%).
1H NMR (DMSO-d6) δH: 8.67 (1H, d, J=2.9 Hz); 7.83 (1H, d, J=8.2); 7.67 (1H, t,
J=5.5); 4.41 (1H, m); 4.10 (1H, dd, J=1.5, 8.6); 3.25 (2H, m); 2.56 (1H, m); 2.20 (1H,
m); 2.13-1.95 (5H, m); 1.84 (1H, t, J=5.5); 1.78 (1H, m); 1.64 (2H, m); 1.46 (4H, m);
1.35-1.15 (27H, m); 0.84 (9H, m); 0.79 (3H, s).

[00247] Decanoic acid (160 mg, 0.94 mmol, 1.2 eq.) was dissolved in DMF dry,
(20 ml) and TBTU (300 mg, 0.94 mmol, 1.2 eq.) was added at r.t. under nitrogen . The
solution was stirred for 20', cooled at 0°-5°C and NMM (0.259 ml, 2.36 mmol, 2.5 eq.)
and 2-S-amino-3-(4-fluorosulfony lamino)propionamide, N-[(1S)-1 -[[(1R)-1 -
[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-
yl]-3-methylbutyl]amino]carbonyl], hydrochloride salt, (430 mg, 0.78 mmol, 1 eq.) of
Example C.6, were added and the resulting mixture was stirred at r.t. for 2h. The
solution was poured in water (200 ml) extracted with ethyl acetate (100 ml), washed
with the following solutions: citric acid 2% (50 ml), sodium bicarbonate 2% (50 ml),
NaCl 2% (50 ml). The organic solution was dried over sodium sulphate anhydrous,
filtered, evaporated and purified by silica gel chromatography (eluent n-hexane/ ethyl
acetate 2/1). The solvent was evaporated and n-hexane was added to give 100 mg of
solid. Yield 19%.
Analytical data: m.p. 83°-85°C, TLC silica gel (eluent hexane /ethyl acetate 2/1, R.f.=
0.53).

1HNMR (DMSO-d6) δH: 8.45 (1H, d, J=3.8 Hz); 7.83 (3H, m); 7.63 (1H, t, J=6.2); 7.42
(2H, t, J= 8.8); 4.40 (1H, m); 4.12 (1H, dd, J=1.5, 8.6); 2.95 (2H, m); 2.64 (1H, m); 2.21
H, m); 2.17 (2H, t, J=7.3); 2.01 (1H, m); 1.83(1H, t, J=5.5); 1.78 (1H, m); 1.62 (2H,
m); 1.45 (2H, m); 1.4-1.1 (23H, m); 0.87-0.8 (9H, m); 0.79 (3H, s).

[00248] Decanoic acid (80 mg, 0.48 mmol, 1.2 eq.) was dissolved in DMF dry,
(20 ml) and TBTU (150 mg, 0.48 mmol, 1.2 eq.) was added at r.t. under nitrogen . The
solution was stirred for 20', cooled at 0°-5°C and NMM (0.13 ml, 1.2 mmol, 2.5 eq.)
and 2-S-amino-3-(3,4-dimethoxyphenylacetamido)propionamide, N-[(1S)-1-[[(1R)-1-
[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaboroI-2-
yl]-3-methylbutyl]amino]carbonyl], hydrochloride salt, (230 mg, 0.4 mmol, 1 eq.) of
Example C.7, were added and the resulting mixture was stirred at r.t. for 2h. The
solution was poured in water (200 ml) extracted with ethyl acetate (100 ml), washed
with the following solutions: citric acid 2% (50 ml), sodium bicarbonate 2% (50 ml),
NaCl 2% (50 ml). The organic solution was dried over sodium sulphate anhydrous,
filtered, evaporated and purified by silica gel chromatography (eluent n-hexane/ ethyl
acetate 1/1). The solvent was evaporated to give 100 mg of glassy solid. Yield 35.7%.
Analytical data: TLC silica gel (eluent hexane /ethyl acetate 1/1, R.f.= 0.53). E.A.
calculated C (67.13%), H (9.25%), N (6.02%); found C (65.38%), H (9.20%), N (5.49).
1H NMR (DMSO-d6) δH: 8.65 (1H, d, J=3.5 Hz); 7.84 (2H, m); 6.83 (2H, m); 6.72 (1H,
dd, J=1.7, 8.1); 4.43 (1H, m); 4.10 (1H, dd, J=1.8, 8.6); 3.72 (3H, s); 3.70 (3H, s); 3.30
(2H, s); 3.27 (2H, m); 2.58 (1H, m); 2.19 (1H, m); 2.02 (3H, m); 1.84 (1H, t, J=5.5);

1.78 (1H, m); 1.63 (2H, m); 1.43 (2H, m); 1.35-1.15 (23H, m); 0.87-0.8 (9H, m); 0.79
(3H,s).

[00249] Decanoic acid (170 mg, 0.99 mmol, 1.2 eq.) was dissolved in DMF dry,
(20 ml) and TBTU (310mg, 0.99 mmol, 1.2 eq.) was added at r.t. under nitrogen . The
solution was stirred for 20', cooled at 0°-5°C and NMM (0.27 ml, 2.4 mmol, 2.5 eq.)
and 2-S-amino-3-(phenylureido)propionamide, N-[(lS)-1-[[(1R)-1-[(3aS,4S,6S,7aR)-
hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-yl]-3-
methylbutyl]amino]carbonyl], hydrochloride salt, (420 mg, 0.82mmoi, 1 eq.) of
Example C.8, were added and the resulting mixture was stirred at 0°C for 2h. The
solution was poured in water (200 ml) extracted with ethyl acetate (100 ml), washed
with the following solutions: citric acid 2% (50 ml), sodium bicarbonate 2% (50 ml),
NaCl 2% (50 ml). The organic solution was dried over sodium sulphate anhydrous,
filtered, evaporated and suspended in diethyl ether (20 ml) for 1h, filtered and dried
under vacuum to give 140 mg of white solid that was purified by silica gel
chromatography (n-hexane/ethyl acetate 1/1). Yield 25%.
Analytical data: TLC silica gel (eluent hexane /ethyl acetate 1/1, R.f.= 0.4).
1H NMR (DMSO-d6) δH: 8.73 (1H, d, J=3.1 Hz); 8.64 (1H, br s); 7.97 (1H, d, J=8.2);
7.36 (2H, d, J-8.1); 7.19 (2H, t, J=8.1); 6.87 (1H, t, J=8.1); 6.1 (1H, t, J=6.0); 4.44 (1H,
m); 4.10 (1H, dd, J=1.8, 8.6); 3.41 (1H, m); 3.22 (1H, m); 2.59 (1H, m); 2.19 (1H, m);
2.10 (2H, t, J=7.3); 2.02 (1H, m); 1.84 (1H, t, J=5.5); 1.78 (1H, m); 1.64 (2H, m); 1.46
(2H, m); 1.35-1.15 (23H, m); 0.87-0.8 (9H, m); 0.79 (3H, s).


[00250] To a solution of N-Boc-Glycine (383 mg, 2.18 mmol), in anhydrous
dichloromethane (20 ml), N-methylmorpholine was added (275 ul, 2.5 mmol). The
mixture was cooled to -15°C, then isobutyl chloroformate (286 ul, 1.2 mmol) was
slowly added. After 15 minutes (2S)-2-amino-5-
[[imino(nitroamino)methyl]amino]pentanamide, N-[(1R)-1-[(3aS,4S,6S,7aR)-
hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-yl]-3-methylbutyl]-
hydrochloride salt of Example C.l (1.00 g, 2.0 mmol) and further N-methylmorpholine
(275 ul, 2.5 mmol) were added. The reaction mixture was stirred at-15°C-10°C for 4h,
then concentrated to small volume and partitioned between ethyl acetate (100 ml) and
water (50 ml). The aqueous phase was further extracted with ethyl acetate (20 ml). The
combined organic phases were dried over sodium sufate and concentrated. The residue
was taken up with ethyl acetate (5 ml) and the solution was dropwise added to hexane
(120 ml) while stirring at room temperature. The solid was collected by decantation and
dried under vacuum (1.18 g, 95%). Part of this Boc-protected intermediate (1.08 g, 1.73
mmol) was dissolved in THF (15 ml), then a 4N solution of HC1 in dioxane was added.
After stirring for 5 hours at room temperature the mixture was concentrated and the
residue was triturated with diethyl ether (50 ml). The resulting white solid was collected
by filtration, washed with diethyl ether and dried under vacuum, yelding 856 mg of the
title compound (88% yleld).
1H NMR (DMSO-d6): 8.76 (1H, d, J=3.1Hz); 8.68 (1H, d, J=8.1); 8.56 (1H, br); 8.06
(3H, m); 7.91 (2H, br); 4.43 (1H, m); 4.14 (1H, dd, J=8.6, -N1.6); 3.60 (2H, m); 3.15
(2H, br); 2.67 (1H, m); 2.23 (1H, m); 2.04 (1H, m); 1.87 (1H, t, J=5.8); 1.81 (1H, m);

1.75-1.60 (3H, m); 1.52 (3H, m); 1.41-1.28 (3H, m); 1.27 (3H, s); 1.23 (3H, s); 0.86
(3H, d, J=6.4); 0.84 (3H, d, J=6.4); 0.81 (3H, s).

[00251] To a solution of 3-[[(1,1-dimethylethoxy)carbonyl]amino]propanamide,
N-[(lS)-1-[[[(1R)-1-[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-
benzodioxaborol-2-yl]-3-methylbutyl]amino]carbonyl]-4-[[imino(nitroamino)methyl-
]amino]butyl]-, of Example D.3.118 (42 mg, 0.075 mmol) in diethyl ether (1.0 ml),
cooled at 0°C, a 10% v/v solution of hydrogen chloride in diethyl ether (2 ml) was
added. The mixture was stirred for 5 hours while allowing to warm to room temperature.
The resulting solid was collected by filtration, washed with diethyl ether (3x3 ml) and
dried under vacuum, giving 33 mg of the title compound (76% yleld).
LC-MS 538.7, MH+. ESI POS; AQA; spray 4 kV/skimmer: 20V/probe 250 C.
[00252] Further compounds prepared according to the above Example, starting
from the corresponding Boc protected compound of Table D.3, are reported in the
following Table D-15.



Example D.16
Synthesis of Further Compounds
[00253] Following the procedures of Examples D.9-D.13, the following
compounds can be prepared by reaction of decanoic acid with the intermediates of
Example C.9.





[002541 4-Butylbenzamide, N-[(lS)-1-[[[(1R)-1-[(3aS,4S,6S,7aR)-hexahydro-
3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-yl]-3-
methylbutyl]amino]carbonyl]-2-[(benzyloxycarbonylamide)ethyl]-, of Example D.16.6,
(400 mg, 0,62 mmol, leq.), was dissolved in 1,4-dioxane (10 ml) and methanol (5 ml).

To this solution, Pd/C 10% (40 mg) and HCl 4N 1,4-dioxane (1.1 eq.) were added. The
mixture was hydrogenated at 1 bar. At the end of the reaction, Pd/C was filtered over
praclite, the solvent removed under reduced pressure to give a white foam. Yield 95%,
320mg. Analytical data:
1H NMR (DMSO-d6): 8.76 (1H, d); 8.55 (1H, d); 8.15 (3H, br s); 7.95 (2H, d); 7.25
(2H, d); 4.8 (1H, m); 4.2 (1H, d); 2.80 (1H, m); 2.62 (2H, t); 2.23 (1H, m); 2.04 (1H,
m); 1.87 (1H, t); 1.80 (1H, m); 1.75-1.50 (2H, m), (2H, m); 1.41-1.20 (6H, d), (6H, m);
1.0-0.80 (3H, d); (3H, d); (3H, s), (3H t).

[00255] 2-Pyrazine carboxylic acid, (76 mg, 0.61 mmol, 1.1 eq.) was dissolved in
DMF dry, (5 ml) and TBTU (200mg, 0.61 mmol, 1.1 eq.) was added at r.t. under
nitrogen . The solution was stirred for 15', cooled at 0°-5°C and NMM (0.20 ml, 1.85
mmol, 3.3 eq.) and 4-butylbenzamide,N-[(1S)-1-[[[(1R)-1-[(3aS,4S,6S,7aR)-
hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-yl]-3-
methylbutyl]amino]carbonyl]-2-(aminoethyl)-hydrochloride salt, from Example D.17,
(310 mg, 0,56 mmol, leq.) were added and the resulting mixture was stirred at 25°C for
4h. The solution was poured in water (100 ml) extracted with ethyl acetate (50 ml),
washed with the following solutions: citric acid 2% (50 ml), NaCl 2% (50 ml), sodium
bicarbonate 2% (50 ml), NaCl 2% (50 ml). The organic solution was dried over sodium
sulphate anhydrous, filtered, evaporated and suspended in diethyl ether- n-hexane for
lh, to give a white solid that was filtered and dried under vacuum to give a white
powder. Yield 52%. 180 mg.
Analytical data: M.p. 70°-72°C.

1H NMR (DMSO-d6): 9.20 (1H, s); 9.0 (1H, t); 8.85 (1H, d); 8.8 (1H, d); 8.78 (1H, d);
8.60 (1H, d); 7.82 (2H, d); 7.35 (2H, d); 4.8 (1H, m); 4.1 (1H, d); 3.80 (1H, m); 3.62
(1H, m); 2.82 (1H, b); 2.65 (2H, m); 2.2-2.0 (2H, m); 1.80 (1H, m); 1.75-1.50 (2H, m),
(2H, m); 1.41-1.20 (6H, d), (6H, m); 1.0-0.80 (3H, d); (3H, d); (3H, s), (3H t).

[00256] 4-Butylbenzamide,N-[(1S)-1-[[[(1R)-1-[(3aS,4S,6S,7aR)-hexahydro-
3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-yl]-3-
methylbutyl]amino]carbonyl]-2-[(benzyloxycarbonylamide)ethyl]-, of Example D.17,
(2,75 g, 5,02 mmol, leq.), was dissolved in dry methylene chloride at 0°-5°C. To this
solution 4-fluorobenzenesulfonyl chloride (l,07g, 5,52mmol, l,leq.) was added and N-
methylmorpholine (NMM) (1,11g, 11,04mmol, 2,2 eq.) was added dropwise, after few
minutes. The mixture was stirred at 0 -5 °C for 30', then at 10 °C for 1 h. The solvent
was removed under reduced pressure, the crude was dissolved in Ethyl acetate and
washed with a solution of citric acid 2% (50 ml) then with a solution of sodium
bicarbonate 2% (50ml) and a solution of sodium chloride 2% (50 ml). The solution was
dried over anhydrous sodium sulfate and the solvent evaporated under reduced pressure.
The crude was purified by silica gel chromatography (eluent ethyl acetate / n-hexane 1 /
2), the collected fractions have been evaporated under reduced pressure and the white
solid was suspended in diethyl ether, filtered and dried under vacuum to give a white
wax. Yield 60%, 2g. Analytical data:
1H NMR (DMSO-d6): 8.60 (1H, d); 8.30 (1H, d); 7.85 (3H, m); 7.8 (2H, d); 7.38 (2H,
d); 7.30 (2H, d); 4.62 (1H, m); 4.15 (1H, d); 3.25 (2H, br); 2.61 (3H, m); 2.3-2.0 (1H,

m); (1H, m); 1.80 (1H, m); 1.75-1.50 (2H, m), (2H, m); 1.41-1.20 (6H, d), (6H, m); 1.0-
0.80 (3H, d); (3H, d); (3H, s), (3H t).

[00257] 4-Butylbenzamide,N-[(lS)-1-[[[(1R)-1-[(3aS,4S,6S,7aR)-hexahydro-
3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-yl]-3-
methylbutyl]amino]carbonyl]-2-[(benzyloxycarbonylamide)ethyl]-, of Example D.17,
(0,9 g, l,64mmol, leq.), was dissolved in dry dichloromethane (10ml). The resulting
solution was cooled to 0° 2.3eq.) was added. To. the mixture, 1,3-dimethyl-lH-pyrazole-5-carbonyl chloride (Rn
[55458-67-8]) ( 0.286mg, l,8mmoI, l.leq.) was added. The mixture was stirred for lh,
then the temperature was raised to 20°C. The mixture was evaporated under reduced
pressure, suspended in ethyl acetate (50ml), twashed with 2% citric acid solution
(30ml), 2% sodium bicarbonate (30ml), 2% sodium chloride (30ml). The organic layer
was dried over anhydrous sodium sulfate and evaporated under reduced pressure. The
crude was purified by silica gel chromatography (eluent Ethyl acetate / n-hexane 8/2).
The collected fractions were evaporated to give a white powder, that was suspended in
diethyl ether and filtered to give the desired compound. Yield 65%, 650mg. Rf. 0.62.
Analytical data: M.p. 62°-64°C.
1H NMR (DMSO-d6): 8.82 (1H, d); 8.40 (2H, m); 7.85 (2H, d); 7.3 (2H, d); 6.5 (1H, s);
4.8 (1H, m); 4.15 (1H, d); 3.9 (3H, s); 3.61 (2H, m); 2.65 (3H, m); 2.25 (1H, m); 2.15
(3H, s); 2.0 (1H, m); 1.80 (1H, m); 1.75-1.50 (4H, m), 1.41-1.20 (5H, m), (6H, m); 0.90
(3H, t); 0.8 (9H, m);


[00258] 4-Butylbenzamide,N-[(l S)-l -[[[(1R)-1-[(3aS,4S,6S,7aR)-hexahydro-
3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-yl]-3-
methylbutyl]amino]carbonyl]-2-[(ben2yloxycarbonylamide)ethyl]-, of Example D.17,
(0,7 g, l,27mmol, leq.), was dissolved in dry THF (10ml), the the solution was cooled
at 0o-5°C. Triethylamine (0,4 ml, 1,8mmol, 2,2 eq.) and (4-methylphenyl)-ureido-
sulfonylchloride (0,34g, l,38mmol, 1,09eq.) of example G.1X have been added. The
suspension was stirred at 25 °C for 1h, then was poured in a citric acid 1% solution
(30ml) and extracted with Ethyl acetate (50ml). The organic solution was washed with
sodium chloride 2% solution, dried over anhydrous sodium sulfate, filtered and
evaporated under reduced pressure to give acrude thata was purified by silica gel
chromatography (eluent Ethyl acetate / n-hexane 1/1) Rf 0.64. The collected fractions
have been evaporated and the oil was coevaporated with diethyl ether to give a white
foam. Yield 31%, 280mg.
Analytical data: M.p. 115°-120°C.
1HNMR (DMSO-d6): 8.80 (1H, s); 8.40 (1H, d); 7.82 (2H, d); 7.3 (2H, d); 7.25 (2H, d);
7.00 (2H, d); 4.62 (1H, m); 4.15 (1H, d); 2.61 (3H, m); 2.3-2.0 (3H, s); 1.80 (1H, m);
1.75 (2H, m), 1.6 (4H, m), 1.2 (13H, m); 0.9 (3H, s), 0.8 (9H m).
Example D.22
4-Phenoxybenzamide,N-[(lS)-1-[[[(1R)-1-[(3aS,4S,6S,7aR)-hexahydro-3a^,5-
trimethyl-4,6-metb.ano-1,3,2-beiizodioxaborol-2-yl]-3-
methylbutyl]amino]carbonyl]-2-(3-phenyl-ureido)ethyl]-


[00259] 4-Phenoxybenzamide, N-[(lS)-1-[[[(1R)-1-[(3aS,4S,6S,7aR)-hexahydro-
3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-yl]-3-
methylbutyl]amino]carbonyl]-2-(amino)ethyl]- hydrochloride salt, from example
D.25.2, (1g, 17mmol, leq,), was dissolved in dry dichloromethane (30ml) and N-
methyl-morpholine (0.2g, 18.8 mmol, 1.1 eq.) was added. The solution was cooled at 0°-
5°C and phenylisocyanate (0.22g, 17.7mmol, 1.1eq.) in dichloromethane (ml) was
added. The mixture was stirred for Ih at 0°-5°C. The solution was washed with sodium
chloride 2% solution (50ml), dried over anhydrous sodium sulfate and evaporated under
vacuum. The crude was suspended in diethyl ether (20ml), stirred for 2h, filtered and
dried under vacuum at 50°C to give a white powder. Yield 74.3%, 0.84g.
Analytical data: M.p. 143°-145°C.
1H NMR (DMSO-d6): 8.9 (1H, d); 8.75 (1H, s); 8.59 (1H, d); 7.95 (2H, d); 7.45 (2H, t);
7.35 (2H, d); 7.2 (3H, m); 7.1 (4H,m); 6.9 (1H, m); 6.25 (1H, t); 4.65 (1H, m); 4.10 (1H,
d); 3.65 (1H, m); 3.4 (1H, m); 2.6 (1H, m); 2.2 (1H, m); 2.1 (1H, m); 1.85 (2H, m);
1.65 (2H, m), 1.3 (3H, m); (6H, d); 0.80 (9tt t).
Example D.23
4-Butylbenzamide, N-[(lS)-1-[[[(1R)-1-[(3aS,aS,6S,7aR)-hexahydro-3a,5,5-
trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-yl-]-
3-methylbutyl]amino]carbonyl]-2-(4-methylphenylsulfonylureido)ethyl]-


[00260] 4-Butylbenzamide, N-[(1S)-1-[[[(1R)-1-[(3aS,4S,6S,7aR)-hexahydro-
3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-yl]-3-
methylbutyl]amino]carbonyl]-2-(aminoethyl)-hydrochloride salt, from Example D.17,
(560 mg, 1.07 mmol, leq.) was dissolved in dichloromethane dry (20ml), and the
solution was cooled at 0°-5°C. N-methyl-morpholine (0.125ml, 1.129mmol, l.leq,);
and 4-toluenesulfonylisocyanate (0.22g, 1.12mmol, l.leq,) were added and the mixture
was stirred at room temperature for 2h. The mixture was washed with a solution of citric
acid 2% (20ml) and a sodium chloride 2% solution (25ml). The organic layer was dried
over anhydrous sodium sulfate, filtered and evaporated under reduced pressure. The
crude was dissolved in diethyl ether (40ml) and the solvent was evaporated. The crude
was suspended in n-hexane (20ml), stirred for 1h at room temperature, filtered and dried
under vacuum at 50°C to give a white powder. Yield 75.6%, 0.55g.
Analytical data: M.p. 168°-170°C.
1H NMR (DMSO-d6): 10.8 (1H, s); 8.75 (1H, d); 8.35 (1H, d); 7.75 (4H, m); 7.35 (5H,
m); 6.65 (1H, t); 4.5 (1H, t); 4.1 (1H, d); 3.5 (1H, m); 3.25 (1H, m); 2.65 (3H, m); 2.3
(3H, d); 2.2 (1H, m); 2.1 (1H, m); 1.80 (2H, m); 1.65 (4H, m), 1.3 (12H, m); 0.80
(12H, m).
Example D.24
Synthesis of Further Compounds
[00261] Following the procedures of Examples D.18 - D.23, the following
compounds can be prepared by reaction of the intermediates of Example D.17 or D.25
with the appropriate commercially available carboxylic acids, acyl halides, sulphonyl
halides, isocyanates, sulphonylisocyanates, or with the compounds of Examples G.14,
G.15 and G.16. All the obtained compounds have been charcterized by 1H-NMR.




















Example D.25
Synthesis of Further Compounds
[00262] Following the procedures of Example Dl 7, the following compounds can
be prepared starting from the compounds of Example D.16.8 and D.16.9.



[00263] Following the same procedures used for the preparation of the compound
of Exanple D.17, the intermediate 4-butylbenzamide, N-[(1R)-1-[[[(1R)-1-
[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaboroI-2-
yl]-3-methylbutyl]amino]carbonyl]-2-(aminoethyl)-hydrochloride salt is prepared using
D-asparagine as starting material. This latter intermediate is then reacted with 4-
methylbenzoic acid following the procedure described in Example D.18 to give the title
compound.
1H NMR (MeOD-d4): 8.88 (2H, d); 8.45 (2H, m); 7.8 (2H, d); 7.7 (2H, d); 7.35 (2H,
m); 7.25 (2H, d); 4.75 (1H, m); 4.1 (1H, d); 3.8 (1H, m); 3.65 (2H, m); 2.65 (3H, m);
2.2 (1H,m); 2.1 (1H, m); 1.8 (2H, m); 1.6 (4H, m); 1.3-1.1 (2H, m); 0.9-0.80 (14H,
m).
Example E.1
Boronic acid, [(1R)-1-[l(2S)-5-[[imino(nitroamino)methyl)amino]-2-[(2-
naphthoyl)amino]-1-oxopentyl]aminol-3-methylbutyl]-.


[00264] A mixture of naphthalene-2-carboxamide, N-[(1S)-1-[[[(1R)-1-
[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-
yl]-3-methylbutyl]-amino]carbonyl]-4-[[imino(nitroamino)methyl]amino]butyl]- of
Example D.1.1 (564 mg, 0.90 mmol), 2-methylpropylboronic acid (222 mg, 2.19 mmol)
and 4N hydrogen chloride dioxane solution (225 ul) in a 40:60 heterogeneous mixture
of methanol :hexane (10 ml) was stirred at room temperature for 4 hours. Hexane (4 ml)
was added, the mixture was stirred for a while, then the hexane layer was removed.
Fresh hexane (5 ml) and 2-methylpropylboronic acid (100 mg, 0.99 mmol) were added
and the mixture was stirred at room temperature for 3 hours. The hexane layer was
removed and the methanol phase was washed with hexane (2x5 ml). The residue
obtained upon concentration of the methanol phase was purified by silica gel column
chromatography eluting with ethyl acetate first, then with 40:40:20
acetone:methanol:hexane mixture. The product was redissolved in a mixture of ethyl
acetate (250 ml) and methanol (6 ml) and the organic phase was washed with water (2 x
25 ml), dried over sodium sulfate and concentrated. The residue was dried under
vacuum at 80 °C for 3 hours affording the product as a white solid (280 mg, 64% yleld).
M.p. 170-190°C
1H NMR (DMSO-d6): 8.76 (1H, m); 8.51 (2H, br); 8.09-7.09 (5H, m); 7.88 (2H, br);
7.60 (2H, br); 4.67 (1H, m); 3.17 (2H, m); 2.58 (1H, m); 1.81 (2H, m); 1.56 (3H, m);
1.38-1.11 (4H, m); 0.83 (1H, m); 0.81 (1H, m); 0.74 (3H, d, J=6.4); 0.74 (3H, d, J=6.4).
El. Anal. Calculated: C 54.33% H6.43% N 17.28% B2.22%
Found C 54.87% H6.64% N 17.00% B2.12%

[00265] Further compounds prepared fundamentally in accordance with the above
experimental procedures are reported in Table E-1.








[00266] Further compounds prepared according to the above procedure for
Example E.l are reported in Table E-1A.


[00267] Further compounds prepared according to the above procedure for
Example E.l are reported in Table E-1B.

[00268] Further compounds prepared according to the above procedure for
Example E.l are reported in Table E-1C. starting from the compounds of Example
D.8.19 and D.8.20.


[00269] Further compounds prepared according to the above procedure for
Example E.l are reported in Table E-1D. starting from the compounds of Example
D.2.9 and D.2.10.



[002701 Decanamide, N-[(1S)-1-[[[(1R)-1 -[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-
trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-yl]-3-methylbutyl]amino]carbonyl]-4-
[[imino(nitroamino)methyl]amino]butyl]- of Example D.l (77 mg, 0.12 mmol), was
dissolved in Et20 (1 mL) and HCl 37% (2 mL) was added carefully at 0°C. The reaction
mixture was allowed to warm to room temperature and to shake overnight. The mixture
was concentrated to dryness and the residue, dissolved in MeOH (1 mL), was passed
through ISOLUTE PSA cartridge, and washed with MeOH. The solvent was evaporated
and the reaction crude product was purified with ISOLUTE SPE-DIOL cartridges
(DCM:MeOH 1:1) to afford the title compound (19 mg, yleld 33%).
NMR (DMSO+D20, 343 K): 4.20 (m, 1H); 3.13 (m, 2H); 3.05 (m, 1H); 2.10 (t, J=6.2
Hz, 2H); 1.69 (m, 1H); 1.53-1.40 (m, 4H); 1.39-1.20 (m, 14H); 0.84 (m, 9H).
LC-MS 468.9, MH+. ESI POS; AQA; spray 4kV/skimmer: 20V/probe 250 °C.
[00271] Further compounds prepared fundamentally in accordance with the above
experimental procedures are reported in Table E-2.























[00272] Further compounds prepared according to the above procedure for
Example E.2 are reported in Table E-2A.



Example E.3
Boronic acid, [(1R)-1-[[(2S,3R)-3-hydroxy-2-[(4-butylbenzoyl)amino]-1-
oxobutyl]amino]-3-methylbutyl].


[00273] A mixture of 4-butylbenzamide, N-[(1S,2R)-1-[[[(1R)-1-
[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-Z-
yl]-3-methylbutyl]amino]-carbonyl]-2-hydroxypropyl]- of Example D.3.179 (1.38 g,
2.63 mmol), 2-methylpropylboronic acid (0.75 g, 7.37 mmol) and 2N aqueous
hydrochloric acid (2 ml) in a heterogeneous mixture of methanol (20 ml) and hexane (20
ml) was stirred at room temperature for 16 hours. The mixture was diluted with
methanol (20 ml) and hexane (20 ml) then the hexane layer was removed. Ethyl acetate
(50 ml) was added to the methanol layer which was then concentrated. The residue was
taken up with ethyl acetate and the mixture was concentrated. This step was repeated (2-
3 times) until an amorphous white solid was obtained. The solid was then triturated with
diethyl ether (10-15 ml) and the surnatant was removed by decantation. This step was
repeated 4 times. After a further trituration with diethyl ether (15 ml) the white solid
was collected by filtration and dried under vacuum at room temperature (0.724 g, 70%
yleld).
1H NMR (MeOH-d4): 7.83 (2H, d, J=8.2); 7.34 (2H, d, J=8.2); 4.77 (1H, d, J=6.4);
4.36-4.28 (1H, m); 2.77 (1H, t, J=7.6); 2.71 (2H,t, J=7.6); 1.72-1.58 (3H, m); 1.46-1.32
(4H, m); 1.29 (3H, d, J=6.4); 0.97 (3H, t, J=7.34); 0.94 (6H, dd, J=l.l, 6.6)
[00274] Further compounds prepared according to the above procedure for
Example E.3 are reported in Table E-3.







[00275] A mixture of 4-(pyridin-3-yl)benzamide, N-[(1S,2R)-1-[[[(1R)-1-
[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-
yl]-3-methylbutyl]amino]carbonyl]-2-hydroxypropyl]- of Example D.8.3 (155 mg,
0.283 mmol), 2-methylpropylboronic acid (81 mg, 0.793 mmol) and 2N aqueous
hydrochloric acid (0.3 ml) in a heterogeneous mixture of methanol (3 ml) and hexane (3
ml) was stirred at room temperature for 24 hours. The hexane layer was removed and
the methanolic layer was washed with fresh hexane (about 5 ml). Ethyl acetate (10 ml)
was added to the methanol layer which was then concentrated. The residue was taken up
with ethyl acetate and the mixture was concentrated. This step was repeated (2-3 times)
until an amorphous white solid was obtained. The solid was then triturated with diethyl
ether (5 ml) and the surnatant was removed by decantation. This step was repeated. The
residue (126 mg) was combined with the product of a similar preparation (140 mg) and
dissolved in ethyl acetate (about 40 ml) and a small amount of methanol (2-3 ml). The
solution was washed with a mixture of NaCl saturated solution (7 ml) and 10% NaHCO3
(2 ml). The layers were separated and the aqueous phase was further washed with ethyl
acetate (2 x 20 ml). The combined organic phases were dried over sodium sulfate and
concentrated. The residue was taken up with ethyl acetate (about 20 ml) and the
minimum amount of methanol, and then concentrated to small volume (about 5 ml). The
resulting white was collected by filtration and dried under vacuum at 50°C (160 mg,
65% overall yleld).
1HNMR (MeOH-d4): 8.90 (1H, s); 8.49 (1H, d, J=4.0); 8.20 (1H, d, J=8.1); 8.06 (2H, d,
J=8.1); 7.85 (2H, d, J=8.1); 7.58 (1H,t br., J-6.0); 4.80 (1H, d, J=3.9); 4.40-4.29 (1H,
m); 2.78 (1H, t, J=7.5); 1.73-1.61 (1H, m): 1.38 (2H, t, J=6.9); 1.31 (3H, d, J=6.3); 0.94
(6H,d,J=6.31).

[00276] Further compounds prepared according to the above procedure for
Example E.4 are reported in Table E-4.



2-S-(4-Butylbenzoylamino)-3-(2-pyrazinocarbonylamino)-N-[(lS)-1-[[(1R)-1-
[(3aS,4S,6S,7aR)-hexahydro-3a,5,5-trimethyl-4,6-methano-1,3,2-benzodioxaborol-2-
yl]-3-methylbutyl]amino]carbonyl], from example D.18, (120mg, 0.19mmol, leq.), was
dissolved in methanol (2ml), and n-hexane (2ml). The this solution, Isobutylboronic
acid (60mg, 0.57mmol, 3eq,) and HCl4N 1,4-dioxane (0.07ml, 0.28mmol, 1.5eq.) have
been added. The resulting bifasic mixture was stirred at room temperature for 20h, the
n-hexane was removed, the methanolic solution was washed with n-hexane (2ml) and
evaporated under reduced pressure. The crude was suspended in diethyl ether/ n-hexane
/4ml), stirred at room temperature and filtered , to give a white powder. Yield 65%, 69
mg.
Analytical data: M.p. 145°-150°C.
1H NMR (MeOD-d4): 9.3 (1H, s); 8.85 (1H, s); 8.75 (1H, s); 7.8 (2H, d); 7.3 (2H, d);
5.1 (2H, t); 4 (2H, dd); 2.8 (1H, t); 2.75 (2H, t); 1.65 (3H, m); 1.4 (4H, m); 1.0 (3H, t)
0.9 (6H, dd).
[00277] Further compounds prepared according to the above procedure for
Example E.5 are reported in Table E-5.



















[00278] To a suspension of boronic acid, [(1R)-1-[[(2S)-5-
[[imino(mtroamino)methyl]amino]-2-[(decanoyl)amino]-1-oxopentyl]amino]-3-
methylbutyl]-, (125 mg, 0.26 mmol) obtained as in Example E.2, in a mixture of diethyl
ether (0.5 ml) and dichloromethane (1 ml), a few drops of methanol were added until
complete dissolution of the solid. (1R,2R)-1,2-dicyclohexyl-1,2-ethanedioI (61 mg, 0.26
mmol) was added and the mixture was stirred at room temperature for 5 hours. The
reaction mixture was concentrated to dryness and the residue was purified by column
chromatography (silica gel) eluting with a 50:50 ethyl acetater:hexane mixture. The
product was then triturated with hexane and the solvent was removed by decantation.
The trituration was repeated two further times. The product was obtained as a waxy
solid (65 mg, 37% yleld).
M.p. 75-100°C
1H NMR (DMSO-d6): 8.99 (1H, d, J=2.5 Hz); 8.52 (1H, br); 7.98 (1H, d, J=8.05); 7.88
(2H, br); 3.48 (2H, d, J=5.7); 3.14 (2H, m); 2.55 (1H, m); 2.19 (1H, m); 2.10 (2H, m);
1.79 (2H, m); 1.74-1.35 (16H, m); 1.24 (22H, m); 1.12 (5H, m); 0.89 (4H, m); 0.84 (9H,
m).

[00279] The title compound was prepared according to the above procedure for
Example F.l using the appropriate boronic acid starting material and bicyclohexy 1-1,1'-
diol.

Analytical results: 1H NMR (DMSO-d6): 8.79 (1H, d, J=2.5 Hz); 8.52 (1H, br); 8.00
(1H, d, J=7.94); 7.85 (2H, br); 7.31-723 (2H, m); 7.20-7.14 (3H, m); 4.40-4.30 (1H, m);
3.15 (2H, m); 2.55 (3H, m); 2.14 (2H, t, J=7.3 Hz); 1.78 (2H, q, J=7.3 Hz); 1.70-0.97
(27H, m); 0.84 (3H, t, J=6.7 Hz); 0.83 (3H, t, J=6.7 Hz).

[00280] The title compound was prepared according to the above procedure for
Example F.l using the appropriate boronic acid starting material and bicycIohexyl-1,1'-
diol.
Analytical results: 1H NMR (DMSO-d6): 8.98 (1H, s br.); 8.00 (1H, d, J=8.5); 7.81 (2H,
d, J=8.2); 7.31 (2H, d, J=8.2); 5.03 (1H, d, J=6.2); 4.49 (1H , dd, J=8.5, 5.0); 4.07-3.98
(1H, m); 2.64 (1H, t, J=7.6); 2.57-2.50 (1H, m); 1.65-1.21 (21H, m); 1.14-1.00 (9H, m);
0.90 (3H, t, J=7.4); 0.85 (6H, d, 6.5).

Step 1:2-undec-10-enyl-1,3-dioxo-1,3-dihydroisoindole
[00281] To a mixture of 10-undecen-1-ol (4.23 g, 24.8 mmol), phthalimide (3.65
g, 24.8 mmol) and triphenylphosphine (6.51 g, 24.8 mmol) in anhydrous tetrahydrofuran
(30 ml), a solution of DEAD (3.9 ml, 24.8 mmol) in anhydrous tetrahydrofuran (10 ml)


was slowly added while keeping the temperature below 8-10°C. After 2 hours further
DEAD (1.0 ml, 6.37 mmol) and triphenylphosphine (1.3 g, 4.96 mmol) were added and
the mixture was stirred at room temperature overnight. The reaction mixture was
concentrated and the residue was triturated with diethyl ether (50 ml). The solid was
removed by filtration and washed with diethyl ether (2 x 50 ml). The combined filtrates
were concentrated and the residue was triturated with hexane (50 ml) at 40°C. The
resulting solid was removed by filtration and washed with hexane (2 x 50 ml). The
combined filtrates were concentrated and the residue was purified by column
chromatography eluting with 10:2 hexane:ethyl acetate mixture. The product was
obtained as a low-melting white solid (4.9 g, 66% yleld).
M.p. 25-30°C
1H NMR (DMSO-d6) 7.83 (4H, m); 5.76 (1H, m); 4.96 (1H, dq, J= 17.2, 1.6 Hz); 4.90
(1H, ddt, J= 10.2, 2.2, 1.1); 3.54 (2H, t, J=7.1), 1.97 (2H, q, J= 6.7); 1.56 (2H, m); 1.35-
1.15(14H,m).
Step 2:10-(1,3-Dioxo-1,3-dihydroisoindol-2-yl)decanoic acid.
[00282] A solution of 2-undec-10-enyl-1,3-dioxo-1,3-dihydroisoindole (2 g, 6.68
mmol) of Step 1 and Aliquat® 336 (0.2 g) in a mixture of hexane (20 ml) and acetic
acid (6 ml) was added dropwise to a solution of potassium permanganate (2.76 g, 20
mmol) in water (28 ml) while cooling at 0°C. The reaction mixture was stirred at room
temperature for 7 hours, then an aqueous solution of sodium bisulfite was added until
disappearance of the purple colour. The mixture was then extracted with ethyl acetate
and the organic phase was dried over sodium sulfate and concentrated. The residue was
purified by silica gel column chromatography eluting with 2:1 hexane:ethyl acetate
mixture. The product was obtained as a white solid (1.29 g, 61% yleld).
M.p. 58-60°C
1H NMR (DMSO-d6) 11.95 (1H, br); 7.85 (4H, m); 3.55 (2H, t, J=7.2 Hz); 2.17 (2H, t,
J=7.2 Hz); 1.7-1.4 (4H, m); 1.22 (10H, m).
Example G.2
6-(BenzenesuIfonylamino)hexanoic acid
[00283] Benzenesulfonyl chloride (2.5 ml, 19 mmol) was added to a solution of
6-aminohexanoic acid (1 g, 7.62 mmol) in 2N NaOH (22 ml) and dioxane (3 ml), while

stirring at 0°C-5°C. The mixture was allowed to warm to room temperature and stirred
for 1 hour. The reaction mixture was washed with ethyl acetate (50 ml), then acidified to
pH 2 with 37% hydrochloric acid and extracted with ethyl acetate (2 x 50 ml). The
combined organic layers were dried over sodium sulfate and concentrated. The residue
was triturated with hexane. The solid was collected by filtration and dried under vacuum
at 50°C affording 1.1 g of the title compound (55% yleld).
M.p. 113-115°C
1H NMR. (DMSO-d6): 11.96 (1H, s); 7.79 (2H, m); 7.60 (4H, m); 2.71 (2H, m); 2.13
(2H, t, J= 7.14Hz); 1.38 (4H, m); 1.21 (2H, m).
Example G.3
6-(Ethylsulfonylamino)hexanoic acid
[00284] A solution of ethanesulfonyl chloride (3.9 ml, 41.1 mmol) in dioxane (10
ml) was added to a solution of 6-aminohexanoic acid (2 g, 15.2 mmol) in IN NaOH (56
ml) and dioxane (10 ml), while stirring at 0°C-5°C. The pH of the reaction mixture was
adjusted to 8-9 by addition of 25% sodium hydroxide solution. The mixture was allowed
to warm to room temperature and stirred for 30 minutes. Further 25% NaOH solution
was added to adjust the pH to about 11. After 3.5h 1N hydrochloric acid (15 ml) and
ethyl acetate (60 ml) were added. The organic layer was dried over sodium sulfate and
concentrated. The residue was triturated with a mixture of diethyl ether (5 ml) and
hexane (15 ml). The solid was collected by filtration and dried affording 1.3 g of the
title compound (40% yleld).
1H NMR (DMSO-d6): 11.9 (1H, s); 6.97 (1H, t, J=5.7 Hz); 2.97 (2H, q, J=7.1); 2.88
(2H, q, J=6.6); 2.2 (2H, t, J=7.3); 1.47 (4H, m); 1.29 (2H, m); 1.18 (3H, t, J=7.3).
Example G.4
8-(Ethylsulfonylamino)ocranoic acid
[00285] A solution of ethanesulfonyl chloride (1.5 ml, 15.7 mmol) in dioxane
(5ml) was added to a solution of 8-aminooctanoic acid (1 g, 6.28 mmol) in IN NaOH
(22 ml) and dioxane (5 ml), while stirring at 0°C-5°C. The mixture was allowed to
warm to room temperature and stirred for 3.5 minutes. During this period, at 1 hour
intervals, the pH was adjusted to 7-8 by addition of 25% NaOH solution. The reaction
mixture was washed with diethyl ether (30 ml). The pH was adjusted to 1-2 by addition

of 1N HC1 and the mixture was extracted with ethyl acetate (70 ml). The organic layer
was dried over sodium sulfate and concentrated. The residue was triturated with a
mixture of diethyl ether. The solid was collected by filtration and dried under vacuum
affording 600 mg of the title compound (38% yleld).
1H NMR (DMSO-d6): 11.9 (1H, s); 6.96 (1H, t, J=6 Hz); 2.96 (2H, q, J=7.1); 2.88 (2H,
q, J=6.6); 2.2 (2H, t, J=7.3); 1.45 (4H, m); 1.26 (6H, m); 1.18 (3H, t, J=7.3).

[00286] L-asparagine (15 g, 0.113 mol, leq.) and sodium carbonate (12 g, 0.113
mol) were dissolved in water (225 ml) and 1,4-dioxane (225 ml) at r.t.. To this solution,
di-tert-butyl-dicarbonate (30 g, 0.137 mol, 1.2 eq.) was added and the mixture was
stirred overnight. The solvent was evaporated under reduced pressure till 1,4-dioxane
was distilled and the pH adjusted to 2 with HC1 37% to give a white solid that was
filtered, washed with water and dried. Yield 91%. 24g.
Analytical data: m.p. 175°C-180°C (lit. 175°C).
1H NMR (DMSO-d6) 12.5 (1H, br); 7.31 (1H, br);6.91 (1H, br); 6.87 (1H, d, J=8.4 Hz);
4.23 (1H, q, J=7.7 Hz); 2.56-2.36 (2H, m); 1.38 (9H, s).


[00287] The compound was prepared according to Bioorg.Med.Chem.,
6(1998)1185-1208. N-[(1,1-dimethylethoxycarbonyl)amino]-L-asparagine (20.7 g, 89.1
mmol, 1 eq.), of Step 1, was dissolved in methanol (500 ml) and cesium carbonate
(15.97 g, 49 mmol, 0.55 eq.) was added. The solvent was evaporated to give a white
solid that was dissolved in N,N-dimethylformamide (200 ml). To the suspension, benzyl
bromide (11.6 m), 98 mmol, 1.1 eq.) was added dropwise and the mixture was stirred
overnight. The solvent was reduced under reduced pressure, water (300 ml) was added
and the mixture extracted with ethyl acetate (200 ml), washed with brine (50ml) and the
solvent removed under reduced pressure to give a crude that was suspended in n-hexane
(160 ml), filtered and dried under vacuum to give 14.68 g of white solid. Yield 51%.
Analytical data: m.p. 113º-115°C.
1H NMR (DMSO-d6) 7.35 (6H, m); 7.13 (1H, d, J-7.9 Hz);6.94 (1H, br s); 5.10 (2H, s);
4.39 (1H, q, J-7.4 Hz); 2.6-2.4 (2H, m); 2.03 (2H, t, J-7.3); 1.37 (9H, s).

[00288] N-[(1,1-dimethylethoxycarbonyl)amino]-L-asparagine, benzyl ester, (2 g,
6.3 mmol, 1 eq.), of Step 2, was dissolved in acetonitrile (80 ml) and water (80 ml). The
solution was cooled to 0°-5°C and iodobenzene diacetate (3 g, 9.3 mmol, 1.5 eq.) was
added portionwise. The mixture was stirred at 0°C for 30', then at r.t. for 4h. The
organic solvent was removed under vacuum, diethyl ether and HC1 1N were added. The
acqueous layer was separated and extracted with dichloromethane (100ml) and sodium
bicarbonate (3.5g). The organic solvent was dried over sodium sulphate anhydrous,
evaporated under reduced pressure to give 0.65g of colourless oil. Yield 36%
Analytical data:
1H NMR (DMSO-d6) 7.45-7.20 (7H, m); 7.20 (1H, d, J=7.7 Hz); 5.13 (2H, AB q, J=
12.8); 4.01 (1H, m); 2.80 (2H, m); 1.38 (9H, s).
Example G.6


[00289] 3-Amino-2-S-[(1, 1 -dimethylethoxycarbonyl)amino]-propionic acid,
benzyl ester, (690 mg, 2.34 mmol, leq.), of Example G.5, was dissolved in DMF dry
(20 ml) and TBTU (900 mg, 2.98mmol, 1.2eq.) was added. The mixture was stirred at
r.t. for 10', cooled to 0°-5°C with ice bath and NMM (0.51 ml, 4.68 mmol, 2 eq.) and 4-
methyl benzoic acid (380 mg, 2.81 mmol, 1.2 eq.) were added. The mixture was stirred
at r.t. for 3h, poured in water (100 ml) and extracted with ethyl acetate (100 ml). The
organic layer was washed with a solution of citric acid 2% (50ml), sodium bicarbonate
2% (50ml), NaCl 2% (50 ml), dried over sodium sulphate anhydrous and evaporated at
reduced pressure to give lg of oil. Yield quantitative.
Analytical data:
lH NMR (DMSO-d6) 8.46 (1H, br t, J=5.7 Hz ); 7.70 (2H, d, J=8.0); 7.35-7.2 (8H, m);
5.07 (2H, s); 4.29 (1H, m); 3.67 (1H, m); 3.58 (1H, m); 2.36(3H, s); 1.37 (9H, s).


[00290] 2-S-[( 1,1 -dimethylethoxycarbonyl)amino]-3 -(4-methylbenzoylamino)-
propionic acid, benzyl ester, (930 mg, 2.25 ramol), of Step 1, was dissolved in methanol
(25ml) and Pd/C 10% (90 mg) was added. The mixture was hydrogenated at
athmospheric pressure for 1h. Pd/C was filtered and the solution was evaporated under
reduced pressure to give 650 mg of white foam. Yield 86%. Analytical data:
1H NMR (DMSO-d6): 12.5 (1H, br); 8.40 (1H, t, J=5.7 Hz); 7.71 (2H, d, J=8.05 Hz),
7.27 (2H, d, J=8.05 Hz);7.09 (1H, d, J=7.9), 4.17 (1H, m); 3.57 (2H, m); 2.35 (3H, s);
1.37 (9H,m).

[00291] Hexanoic acid (450 mg, 3.87 mmol, 1.2 eq.) was dissolved in DMF dry
(15 ml) and TBTU (1.24 g, 3.87 mmol, 1.2eq.) was added, the mixture was stirred at r.t.
for 20', then was cooled to 0°-5°C with ice bath. 3-amino-2-S-[(1,1-
dimethylethoxycarbonyl)amino]propionic acid, benzyl ester, (950 mg, 3.22 mmol, leq.),
of Example G.5, and NMM (1.06 ml, 9.61 mmol, 2.5 eq.) were added. The mixture was
stirred at r.t. overnight, poured in water (150 ml) and extracted with ethyl acetate (100
ml). The organic layer was washed with a solution of citric acid 2% (50ml), sodium
bicarbonate 2% (50ml), NaCl 2% (50 ml), dried over sodium sulphate anhydrous and
evaporated at reduced pressure to give a crude that was purified by silica gel column
chromatography (eluent: n-hexane/ethyl acetate 2/1, R.f = 0.52) 0.5g of colourless oil-
Yield 40%.
Analytical data:
1H NMR (DMSO-d6).

δH: 7.87 (1H, br t, J=6.2 Hz); 7.35 (5H, m); 7.14 (1H, d, J= 8.2); 5.07 (2H, s); 4.14 (1H,
m); 337 (2H, m); 2.00 (2H, t, J=7.1); 1.43 (2H, m); 1.36 (9H, s); 1.3-1.1 (4H, m); 0.83
(3H,t,J=7.1Hz)

[00292] 2-S-[(1,1 -dimethylethoxycarbonyl)amino]-3-(hexanoylamino)propionic
acid, benzyl ester (500 mg, 1.27 mmol), of Step 1, was dissolved in methanol (15 ml)
and Pd/C 10% (50 mg) was added. The mixture was hydrogenated at athmospheric
pressure for 1h. Pd/C was filtered and the solution was evaporated under reduced
pressure to give 300 mg of white solid. Yield 78%.
Analytical data: m.p. 123°-125°C.
1H NMR(DMSO-d6).
δH: 12.6 (1H, br); 7.84 (1H, br t); 6.87 (1H, d, J= 7.5 Hz); 4.00 (1H, m); 3.32 (2H, m);
2.04 (2H,1, J=7.5); 1.47 (2H, m); 1.38 (9H, s); 1.3-1.1 (4H, m); 0.85 (3H, t, J=7.I Hz)


[00293] 3-Amino-2-S-[(1,1-dimethylethoxycarbonyl)amino]propionic acid,
benzol ester (1.25 g, 4.24 mmol, leq.), of Example G.5, was dissolved in
dichloromethane dry (20 ml) and the solution was cooled to 0°-5°C, under nitrogen.
TEA (0.65 ml, 4.67 mmol., l.leq.) and 4-fluoro-sulfonylchloride (0.9 g, 4.67 mmol.,
1.leq.) in dichloromethane dry (10ml) were added. The mixture was stirred at r.t. for 1h,
evaporated under reduced pressure and diethyl ether (25 ml) was added and a white
solid was obtained that was filtered and dried under vacuum to give 1.89g of product.
Yield 99%.
Analytical data: m.p. 105°-107°C. TLC silica gel (eluent: n-hexane/ethyl acetate 1/1, R.f
= 0.55).
1H NMR (DMSO-d6).
δH: 7.91 (1H, t, J=6.2 Hz); 7.85 (2H, dd, J=5.3, 8.8); 7.43 (2H, t, J=8.8); 7.35 (5H, m);
7.15 (1H, d, J=8.2); 5.09 (2H, s); 4.14 (1H, m); 3.10 (2H, m); 1.36 (9H, s).

[00294] 2-S-[(1,1-dimethylethoxycarbonyl)amino]-3-(4-
fluorosulfonylamino)propionic acid, benzyl ester (1.8 g, 3.98 mmol.), of Step 1, was
dissolved in methanol (30 ml) and Pd/C 10% (180 mg) was added. The mixture was
hydrogenated at athmospheric pressure for lh. Pd/C was filtered and the solution was
evaporated under reduced pressure to give 1.39 g of colourless oil. Yield 97%.
Analytical data:
1H NMR(DMSO-d6).
δH: 12.7 (1H, br); 7.83 (2H, dd, J=5.3, 8.8); 7.78 (1H, br t, J=5.5); 7.42 (2H, t, J-8.8);
6.87 (1H, d, J=8.6); 3.99 (1H, m); 3.03 (2H, m); 1.36 (9H, s).
Example G.9


[00295] 3,4-Dimethoxy-phenylacetic acid (720 mg, 3.66 mmol, 1.2 eq.) was
dissolved in DMF dry (20 ml) and TBTU (1.17 g, 3.66 mmol, 1.2eq.) was added, the
mixture was stirred at r.t. for 20', then was cooled to 0°-5°C with ice bath. 3-amino-2-S-
tert-butoxycarbonylamino-propionic acid, benzyl ester (0.9 g, 3.05 mmol, leq.), of
Example G.5, and NMM (1.0 ml, 9.15 mmol, 2.5 eq.) were added. The mixture was
stirred at 0°C for 2h, then poured in water (200 ml) and extracted with ethyl acetate (100
ml). The organic layer was washed with the following solutions: citric acid 2% (20ml),
sodium bicarbonate 2% (20ml), NaCl 2% (20 ml), dried over sodium sulphate
anhydrous and evaporated at reduced pressure to give a crude that was purified by silica
gel chromatography (eluent: n-hexane/ethyl acetate 1/1, R.f — 0.57) to give I g of
colourless oil. Yield 69%.
Analytical data: 1H NMR (DMSO-d6). δH: 8.02 (1H, t, J=5.7 Hz); 7.34 (5H, m); 7.17
(1H, d, J=7.7); 6.82 (2H, m); 6.71 (1H, dd, J=1.5, 8.2); 5.03 (2H, s); 4.14 (1H, m); 3.71
(3H, s); 3.69 (3H, s); 3.39 (2H, m); 1.36 (9H, s).
Step 2:2-S-[(1,1-dimethylethoxycarbonyl)amino]-3-(3,4-dimethoxyphenylacetamido)-
propionic acid.


[00296] 2-S-[(1,1 -dimethylethoxycarbonyl)amino]-3-(3,4-
dimethoxyphenylacetamido)-propionic acid, benzyl ester (1 g, 2.1 mmol.), of Step 1,
was dissolved in methanol (30 ml) and Pd/C 10% (10 mg) was added. The mixture was
hydrogenated at athmospheric pressure for lh. Pd/C was filtered and the solution was
evaporated under reduced pressure to give 0.73 g of white foam. Yield 91%.
Analytical data: 1H NMR (DMSO-d6). δH: 12.7 (1H, br); 8.06 (1H, t, J=5.9 Hz); 7.00
(1H,d, J= 8.05); 6.91 (2H, m); 6.80 (1H, dd, J=1.5, 8.4); 4.08 (1H, m); 3.80 (3H, s); 3.78
(3H, s); 3.5-3.3 (2H, m); 1.36 (9H, s).

[00297] 3-Amino-2-S-[(1,1-dimethylethoxycarbonyl)amino]propionic acid,
benzyl ester (1.14 g, 3.87 mmol, leq.), of Example G.5, was dissolved in
dichloromethane (20 ml) at r.t., The solution was cooled to 0°-5°C and phenyl
isocyanate (0.42 ml, 3.87 mmol, 1 eq.) in dichlorometane (5 ml) was added dropwise.
The solution was stirred at r.t. for 1h, evaporated under reduced pressure and purified by
silica gel chromatography (eluent n-hexane/ethyl acetate 1/1) to give 0.71 g of glassy


solid that was suspended in diethyl ether to give a white solid. Yield 44%. Analytical
data: TLC silica gel (eluent n-hexane/ethyl acetate 1/1 R.f = 0.44), m.p. 48°-50°C.
1H NMR (DMSO-d6). ΔH: 8.68 (1H, s); 7.4-7.27 (8H, m); 7.22 (2H, t, J=8.2 Hz); 6.90
(1H, t, J= 7.3); 6.26 (1H, t, J=5.7); 5.11 (2H, s); 4.12 (1H, m); 3.58 (1H, m); 3.28 (1H,
m); 1.38 (9H, s).

[00298] 2-S-[(1,1 -dimethylethoxycarbonyl)amino]-3-(3-phenylureido)propionic
acid, benzyl ester (0.7 g, 1.7 mmol.), of Step 1, was dissolved in methanol (25 ml) and
Pd/C 10% (70 mg) was added. The mixture was hydrogenated at athmospheric pressure
for 1h. Pd/C was filtered and the solution was evaporated under reduced pressure to give
0.47 g of desired product. Yield 87%.
Analytical data: 1H NMR (DMSO-d6). δH: 12.6 (1H, br); 8.66 (1H, s); 7.37 (2H, d, J=8.1
Hz); 7.21 (2H, t, J=7.50); 7.08 (1H, d, J=7.9); 6.89 (1H, t, J= 7.3); 6.21 (1H, t, J=5.9);
3.98 (1H, m); 3.54 (1H, m); 3.22 (1H, m); 1.38 (9H, s).
Example G.11
Synthesis of Further Compounds
[00299] The following compounds can be prepared starting from 3-amino-2-S-
[(1,1-dimethylethoxycarbonyl)amino]propionic acid, benzyl ester of Example G.5, with
the methods described in Step 1 and Step 2 of Examples G.6-G.10.



[00300] N-tert-butoxycarbonyl-L-asparagine, from step 1 of Example G.5 or
commercially available, (8 g, 0.034 mol, leq.) was suspended in ethyl acetate (72 ml),
acetonitrile (72ml) and water (36ml), and Iodobenzenediacetate (13,3 g, 0.041 mol, 1,2

eq.) was added at 5°C. The mixture was stirred at 10°-25°C for 3-4h, then a white solid
came off.. The solid was filtered, washed with diethyl ether and dried under vacuum to
give a white powder. Yield 57%. 4g.
Analytical data: m.p. 210°C-211°C. Silica gel (dicloromethane/methanol/acetic acid
5/3/1) Rf 0,5. 1HNMR (DMSO-d6) 4.15 (1H, t); 3.15 (2H, m); 1.45 (9H, s);

[00301] N2-(tert-Butoxycarbonyl)-L-2,3-diaminopropionic acid, from step 1, (3,8
g, 0,018 mol, 1 eq.) was dissolved in aqueous sodium carbonate 10% (2,2 eq.) at 25°C
and 1,4-dioxane (38ml). To this solution, benzylchloroformate ( 3ml, 0,020 mol, 1,1 eq.)
was added dropwise and the solution was stirred at 25°C for 3h. At the end of the
reaction, the mixture was poured in water (100ml) and washed with diethyl ether
(100ml). To the aqueous solution, HCl37% (6 ml) was added till pH 2 and the obtained
mixture was extracted with Ethyl Acetate (100ml). The organic layer was separated,
washed with brine and dried over sodium sulfate anhydrous. The solvent was removed
under reduced pressure to give a colourless oil that under vacuum gave a white foam.
Yield 93%, 5,9 g.
Analytical data: silica gel (dicloromethane/methanol/acetic acid 5/3/1) Rf 1.
1H NMR (DMSO-d6) 12.6 (1H br s); 7.35 (5H m); 6.94 (1H, d); 5 (2H, s); 4.1 (2H, ni);
1.4(9H,s).


[00302] The intermediate was prepared according to the procedure described in
Vederas, J. Am. Chem. Soc, 1985, 107, 7105-7109.

[00303] Piperidine-4-carboxylic acid (5g, 38.7 mmol, leq.) was dissolved in
sodium carbonate solution (4.5g, 42.61mmol, 2.2 eq.), 70ml, and 1,4-dioxane (30ml). A
solution of di-tert-butyldicarbonate (9.3g, 42.61mmol, l.leq.) in 1,4-dioxane (40ml)
was added dropwise and the resulting mixture was stirred overnight at room
temperature. The organic solvent was removed under reduced pressure and the resulting
solution was acidified with HCl 37% till pH 2. The obtained suspension was filtered ,
the white solid washed with diethyl ether (5ml). The mother liquor has been extracted
with ethyl acetate (120ml) and the previous solid was added. The organic solution was
dried over anhydrous sodium sulfate, evaporated under reduced pressure to give a white
solid that was dried at 80°C under vacuum to give the title compound. Yield 93%, 8.2g.
Analytical data: m.p. 133°-135ºC.
1H NMR (DMSO-d6) 12.3 (1H br s); 3.85 (2H, d); 2.8 (2H, br); 2.35 (1H, t); 1.8 (2H, d);
1.4(11H,m).
Step 2: l-[(1,1-Dimethylethoxycorbony})ammo]-piperidine-4-carboxylic acid benzyl
ester


[00304] 1 -[(1,1-Dimethylethoxycarbonyl)amino]-piperidine-4-carboxylic acid
(6g,26.16mmol, leq.), from stepl, was dissolved in methanol (150ml) and cesium
carbonate (4.26g, 13.08mmol, 0.5eq.) was added. The mixture was stirred at room
temperature for 2h, the the solvent was removed under reduced pressure. The crude was
dissolved in DMF (100ml) and benzylbromide (5.37g, 31.39mmol, 1.2eq.) was added
dropwise. The mixture was stirred overnight at room temperature and poured in water
(300ml), extracted with Ethyl Acetate (900ml) The organic layer was dried over
anhydrous sodium sulfate and evaporated under reduced pressure to give a white solid.
Yield 95%, 7g.
Analytical data:
1H NMR (DMSO-d6) 7.3 (5H m); 5.1 (2H, s); 3.85 (2H, d); 2.8 (2H, br); 2.65 (1H, t);
1.8(2H,d);1.4(11H,m).

[00305] 1-[(1,1-Dimethylethoxycarbonyl)amino]-piperidine-4-carboxylic acid
benzyl ester (7g, 21.0 mmol), from step2, was dissolved in 1,4-dioxane (20ml). To this
solution, HC1 4N in 1,4-dioxane (7.8ml, 300ml, 12 eq.) was added and the resulting
solution was stirredovernight at room temperature. The solid was filtered, suspended in
n-hexane (50ml), and filtered to give a white solid. Yield 54%, 2.5g.
Analytical data:
1H NMR (DMSO-d6) 8.9 (2H, br); 7.35 (5H, m); 5.1 (2H, s); 3.25 (2H, d); 2.9 (2H, t);
2.75 (1H, m); 2.0 (2H, m); 1.8 (2H, m).
Step 4: 1-Methanesulfonyl-piperidine-4-carboxylic acid benzyl ester.


[00306] Piperidine-4-carboxylic acid benzyl ester, hydrochloride salt (Ig, 3.9
mmol, le.) from step 3, was dissolved in DMF (15ml), Triethylamine (0.55ml, 4mmol,
(1 eq.) and methanesulfonylcbloride were added. The mixture was stirred for lh at room
temperature, then was poured in water (20ml) . The acqueous solution was extracted
with Ethyl Acetate (90ml) and the organic layer was dried over anhydrous sodium
sulfate, evaporated under reduced pressure to give a colourless oil. Yield 78%, 0.9g,
Analytical data:
lH NMR (DMSO-d6) 7.35 (5H, m); 5.1 (2H, s); 3.5 (2H, d); 2.8 (5H, m); 2.6 (1H, m);
2.0(2H,m);1.6(2H,m).

[00307] 1-Methanesulfonyl-piperidine-4-carboxylic acid benzyl ester (0.8g,
26.7mmol) from step 4, was dissolved in ethyl acetate (100ml) and methanol (10ml),
Pd/C 10% (80mg) was added and the resulting mixture was hydrogenated at 1 bar. The
catalyst was filtered over celite, the solvent was removed under reduced pressure to give
a white solid. Yield 73%, 0.4g
Analytical data:
lH NMR (DMSO-d6) 12.4 (1H, br); 3.6 (2H, d); 2.9 (4H, m); 2.4 (1H, m); 2.0 (2H, m);
1.6(2H,m).
Example G.15


[00308] This compound was prepared according to J. Med Chem. 1996, 39,
1243-1252. Briefly, a solution of chlorosulfonylisocyanate (1.62 g, 11.5 mmol, leq.)
was diluted in dry diethylether and the resulting solution was cooled at -50°C To this solution, p-toluidine (1.23g, 11.5mmol, leq.) was added. The solution was
stirred at -35°C for 10' and a suspension was obtained. The solid was filtered and
washed with diethyl ether. Yield 80%, 2.3g.
Analytical data: m.p. 127°-129°C.
1H NMR (DMSO-d6) 9.9 (1H, s); 7.3 (2H, d); 7.1 (2H, d); 2.25 (3H, s);
Example G.16
Isoxazole-5-carboxylic acid.
[00309] The desired carboxylic acid was prepared according to the procedure by
Wolfang et al., Synthesis, 1986,69-70.
UTILITY
Compound Activity
[00310] The present compounds can inhibit proteasome activity. Table F-l below
provides data related to several Example compounds of the invention with respect to, for
example, ability to inhibit proteasome activity.
Methods and Compositions
[00311] Compounds of the present invention can inhibit the activity of
proteasome leading to the inhibition or blocking of a variety of intracellular functions
with which the proteasome is directly or indirectly associated. For example, proteasome
inhibitors can modulate, such as induce, apoptosis in a cell. In some embodiments, the

compounds herein can kill tumor cells by induction of apoptosis. Thus, the present
compounds can be used to treat cancer, tumors or other proliferative disorders.
[00312] In further embodiments, inhibition of proteasome function by compounds
of the invention can inhibit the activation or processing of transcription factor NF-KB.
This protein plays a role in the regulation of genes involved in the immune and
inflammatory responses as well as in cell viability. Inhibition of proteasome function
can also inhibit the ubiquitination/proteolysis pathway. This pathway catalyzes, inter
alia, selective degradation of highly abnormal proteins and short-lived regulatory
proteins. In some embodiments, compounds of the invention can prevent the
degradation of p53 which is typically degraded by the ubiquitin-dependent pathway.
The ubiquitination/proteolysis pathway also is involved in the processing of internalized
cellular or viral antigens into antigenic peptides that bind to MHC-I molecules. Thus,
the compounds of the invention can be used to reduce the activity of the cytosolic ATP-
ubiquitin-dependent proteolytic system in a number of cell types.
[00313] Accordingly, the usefulness of such compounds can include therapeutics,
such as the treatment of various diseases or disorders associated with proteasome. The
methods include administering a therapeutically effective amount of a compound of the
invention, or composition thereof, to a mammal, such as a human having a disease or
disorder associated with proteasome. The phrase "therapeutically effective amount"
refers to an amount sufficient to prevent, alleviate, or ameliorate any phenomenon, such
as a cause or symptom, known in the art to be associated with the disease or disorder.
[00314] Treatable diseases or disorders (abnormal physical conditions) can be
associated with either normal or abnormal activities of proteasome, such as the
regulation of apoptosis. Numerous diseases or disorders that are associated with
proteasome, or that are desirably treated by induction of apoptosis, are known and
include, for example, various cancers and tumors including those associated with skin,
prostate, colorectal, pancreas, kidney, ovary, mammary, liver, tongue, lung, and smooth
muscle tissues. Preferred tumors that can be treated with proteasome inhibitors include,
but are not limited to hematological tumors, such as, for example, leukemias,
lymphomas, non-Hodgkin lymphoma, myeloma, multiple myeloma, as well as solid
tumors such as, for example, colorectal, mammary, prostate, lung, and pancreas tumors.
In order to elicit therapeutic effects, the proteasome inhibitors can be administered to
patients as single agents or in combination with one or more antitumor or anticancer

agent and/or radiotherapy. Examples of other anti-tumor or anti-cancer agents which can
be advantageously administered concomitantly with a proteasome inhibitor include but
are not limited to, adriamycin, daunomycin, methotrexate, vincristin, 6-mercaptopurine,
cytosine arabinoside, cyclophosphamide, 5-FU, hexamethylmelamine, carboplatin,
cisplatin, idarubycin, paclitaxel, docetaxel, topotecan,' irinotecam, gemcitabine, L-PAM,
BCNU and VP-16. Methods for determining apoptosis in vitro are well known in the art
and kits are available commercially. See for example the Apo-ONE™ Homogeneous
Caspase-3/7 Assay from Promega Corporation, Madison WI, USA (Technical Bulletin
No. 295, revised 2/02, Promega Corporation).
[00315] Further diseases or disorders associated with the proteasome include
accelerated or enhanced proteolysis that occurs in atrophylng muscles, such as is often
associated with activation of a nonlysomal ATP-requiring process involving ubiquitin.
Accelerated or enhanced proteolysis can be the result of any of numerous causes
including sepsis, burns, trauma, cancer, infection, neurodegenerative diseases such as
muscular dystrophy, acidosis, or spinal/nerve injuries, corticosteroid use, fever, stress,
and starvation. Compounds of the invention can be tested for inhibition of muscle
wastage by any various procedures known in the art such as by measuring urinary
excretion of modified amino acid 3-methylhistidine (see, e.g., Young, et al., Federation
Proc, 1978, 37,229).
[00316] Compounds of the present invention can be further used to treat or
prevent diseases or disorders associated with activity of NF-KB including for example,
human immunodeficiency virus (HIV) infection and inflammatory disorders resulting
from, for example, transplantation rejection, arthritis, infection, inflammatory bowel
disease, asthma, osteoporosis, osteoarthritis, psoriasis, restenosis, and autoimmune
diseases. Accordingly, a process that prevents activation of NF-KB in patients suffering
from such a disease would be therapeutically beneficial. Inhibition of the NF-KB activity
can be measured by using a DNA binding assay such a described in Palombella, et al.,
Cell, 1994, 78, 773.
[00317] Those of ordinary skill in the art can readily identify individuals who are
prone to or suspected of suffering from such diseases or disorders using standard
diagnostic techniques.
Example A

Assay for Chymotrypsin-like Activity of 20S Human Erythrocyte Proteasome
(HEP)
[00318] Proteasome chymotrypsin-like activity of compounds of the invention
was assayed according to the following procedure.
[00319] In 96-well microtiter plates, 20S Human Erythrocyte Proteasome (HEP),
purchased from Immatics Biotechnologies Inc., Tubingen, Germany was plated at 0.2
μg/mL (about 0.6 nM catalytic sites) in 0.04% SDS 20mM Tris buffer. A fluorimetric
substrate Suc-LLVY-AMC (succinyl-Leu-Leu-Val-Tyr-7-amido-4-methylcoumarin),
purchased from Sigma Inc., St. Louis, MO, USA was added to a final concentration of
100 μM from a stock solution of 10 mM in dimethylsulfoxide. Reaction volumes were
100 μl per well. After incubation for various periods of time at 37 °C, the concentration
of free AMC (aminomethylcoumarin) was determined on a Perkin Elmer HTS 7000
Plus microplate reader, excitation 370 nM and emission 465nM. Proteasome activity
was determined under conditions in which substrate hydrolysis increased linearly with
time and the change in fluorescence signal was proportional to the concentration of free
AMC.
Example B
Assay for Activity of α-Chymotrypsin
[00320] In 96-well microtiter plates bovine a-chymotrypsin, purchased from
Sigma Inc., was plated at 10 ng/mL (about 2 pM catalytic sites) in 0.5 M NaCl 50mM
Hepes buffer. A fluorimetric substrate Suc-AAPF-AMC (succinyl-Ala-Ala-Pro-Phe-7-
amido-4-methylcoumarin), purchased from Sigma Inc., St. Louis, MO, USA was added
to a final concentration of 25 μM from a stock solution of 10 mM in dimethylsulfoxide.
Reaction volumes were 100 μl per well. After incubation for various periods of time at
room temperature, the concentration of free AMC was determined on a Perkin Elmer
HTS 7000 Plus microplate reader, excitation 370 nM and emission 465 nM. α-
Chymotrypsin activity was determined under conditions in which substrate hydrolysis
increased linearly with time and the change in fluorescence signal was proportional to
the concentration of free AMC.
Example C
Determination of IC50 Values for HEP and α-Chymotrypsin Inhibitors

[00321] IC50 values are typically defined as the concentration of a compound
necessary to produce 50% inhibition of the enzyme's activity. IC50 values are useful
indicators of the activity of a compound for its designated use. The proteasome
inhibitors of the invention can be considered active if they have IC50 values of less than
about 1 micromolar for inhibition of human erythrocyte proteasome (HEP). In some
embodiments, the inhibitors show some specificity for HEP and the ratio of the IC50 for
inhibition of bovine α-chymotrypsin versus the IC50 for inhibition of HEP, i.e, IC50 (α-
Chymotripsin)/ IC50 (HEP), is greater then about 100.
[00322] Inhibition of the chymotrypsin-like activity of HEP and of bovine α-
chymotrypsin was determined by incubating the enzyme with various concentrations of
putative inhibitors for 15 minutes at 37 °C (or room temperature for α-chymotrypsin)
prior to the addition of substrate. Each experimental condition was evaluated in
triplicate, and replicate experiments were performed for the inhibitors described herein.
[00323] Compounds of the present invention are considered active in the above
identified assay if their IC50 values for inhibition of HEP are less than 1000 nanoMolar.
Preferably compounds of the present invention will have IC50 values for inhibition of
HEP less than 100 nanoMolar. More preferably compounds of the present invention will
have IC50 values for inhibition of HEP less than 10 nanoMolar. Compounds of the
present invention have demonstrated, in the above identified assay, IC50 values for
inhibition of HEP less than 1000 nanoMolar.
Example D
Cellular Assay for Chymotrypsin-like activity of Proteasome in Molt-4 Cell Line
[00324] The chymotrypsin-like activity of proteasome in Molt-4 cells (human
leukemia) was assayed according to the following procedure. A brief description of the
method was published previously (Harding et al., J. Immunol., 1995,155, 1767).
[00325] Molt-4 cells were washed and resuspended in HEPES-buffered Saline
(5.4 mM KC1, 120 mM NaCl, 25 mM Glucose, 1.5 raM MgSO4, 1 mM Na pyruvate, 20
mM Hepes) and plated in 96-well microtiter white plates to a final concentration of
6x106 cells/mL. Then various 5X proteasome inhibitor concentrations (or diluted DMSO
for controls), prepared from 250X DMSO solutions by diluting 50-fold using HEPES-
buffered saline, were added to the plate to a final IX concentration. After 15 minutes
incubation at 37°C, a fluorimetric cell permeable substrate (MeOSuc-FLF-AFC)


(methoxysuccinyl-Phe-Leu-Phe-7-amido-4-trifluoromethylcoumarin) purchased from
Enzyme Systems Products, catalogue number AFC-88, was added to each well at a final
concentration of 25 uM from a stock solution of 20 mM in DMSO. Reaction volumes
were 100 μl per well.
[00326] The concentration of free AFC was monitored every 1.5 min for 30 min
(22 cycles) on a Polastar Optima, BMG Labtechnologies microplate reader, using an
excitation wavelength of 390 nm and emission wavelength of 520 nm. Proteasome
activity was determined under conditions in which substrate hydrolysis increased
linearly with time and the change in fluorescent signal was proportional to the
concentration of free AFC.
Example E
Determination of EC50 values for proteasome inhibitors in MOLT-4 Cell Line
[00327] EC50 values are typically defined as the concentration of a compound
required to produce an inhibition of the enzyme's activity halfway between the
minimum and the maximum response (0% and 85-90% respectively for this assay). EC50
values are useful indicators of the activity of a compound for its designated use. The
compounds of the invention can be considered active if they have an EC50 of less than
about 10 micromolar.
[00328] Inhibition of chymotrypsin-like activity of proteasome in Molt-4 cells
was determined by incubating cells with various concentrations of putative inhibitors for
15 minutes at 37°C prior to the addition of substrate. Each experimental condition was
evaluated in triplicate, and replicate experiments were performed for the inhibitors
described herein.
[00329] Compounds of the present invention are considered active in the above
identified assay if their EC50 values for proteasome inhibition in MOLT-4 are less than
10 microMolar. Preferably compounds of the present invention will have EC50 values
for proteasome inhibition in MOLT-4 less than 2 microMolar. More preferably
compounds of the present invention will have EC50 values for proteasome inhibition in
MOLT-4 less than 200 nanomolar. Compounds of the present invention have
demonstrated, in the above identified assay, EC50 values for proteasome inhibition in
MOLT-4 cells of less than 10 microMolar.

Example F
Assay for Trypsin-like Activity of the Proteasome
[00330] The trypsin-like activity of human proteasome can be assayed as
described above with the following modifications. Reactions can be carried out in Tris-
glycerol buffer (pH 9.5) supplemented with 1 mM 2-mercaptoethanol, and the substrate
can be a fluorogenic substrate such as benzyloxycarbonyl—Phe—Arg—AMC (100 μM).
[00331] After incubation for various periods of time at 37 °C, the concentration
of free AMC can be determined on a Fluoroskan II spectrofluorimeter with an excitation
filter of 390 nm and an emission filter of 460 nm. Protease activity can be determined
under conditions in which substrate hydrolysis increases linearly with time and the
change in fluorescence is proportional to the concentration of free AMC.
Example G
In vivo Inhibition of Cellular Muscle Breakdown
[00332] The effect of inhibitors on the unweighting atrophy of the soleus muscle
in juvenile rats can be determined by, for example, the procedures described in Tischler,
Metabolism, 1990, 39, 756. For example, juvenile female Sprague-Dawley rats (80-90
g) can be tail-cast, hind limb suspended as described in Jaspers, et al., J. Appl. Physiol.,
1984, 57,1472. The animal's hind limbs can be elevated above the floor of the cage with
each animal housed individually. Animals can have free access to food and water, and
can be weighed at the time of suspension and at time of termination. During the
suspension period the animals can be checked daily to ensure that their toes are not
touching the floor of the cage, and that there is no swelling of the tail due to the cast.
Experimental Design—Part 1
[00333] Each experiment can begin with the suspension of 20 rats which are
randomly divided into 4 groups of 5 animals each. Group A can be suspended for 2
days, providing baseline data to approximate the soleus muscle size in other animals
suspended for longer times. Average body weights for the groups at the outset of the
study can be compared and used as a correction factor for body size differences. Group
B can be a second control group which has the soleus of one limb treated with an
aqueous solution of mersalyl after two days of unweighting, to demonstrate the ability to
slow muscle atrophy during unweighting, for each group of animals. At 2 days after


unweighting commences, an aqueous solution of mersalyl (200 nM; 4 μL /100 g initial
body wt) can be injected into one soleus. The contralateral muscle can be injected with a
similar volume of 0.9% saline ("Vehicle"). The animals can be maintained under
Innovar-vet (10 μX/100 g body wt) tranquilization during the in situ injection procedure.
After the injections, the animals can be suspended for an additional 24 hours and the
soleus can be removed. Groups C and D for each experiment can be used for testing
each of two different embodiments of the disclosed compounds. Animals can be treated
as in group B, except that 1 mM proteasome inhibitor, contained in dimethysulfoxide
(DMSO), can be injected into the soleus of one leg and DMSO only into the
contralateral soleus. Thus each experiment consists of two control groups and the testing
of proteasome inhibitors of the invention. The completion of five such experiments with
different pairs of inhibitors provides for an "n" value of 10 for testing each inhibitor and
each can be tested in two different shipments of animals.
Processing of the Soleus Muscle—Part 1
[00334] After the animal is sacrificed, the soleus can be excised, trimmed of fat
and connective tissue, and carefully weighed. The muscle can then homogenized in 10%
trichloroacetic acid (TCA) and the precipitated protein pelleted by centrifugation. The
pellet can then be washed once with 10% TCA and once with ethanol:ether (1:1). The
final pellet can be solubilized in 4 ml of IN sodium hydroxide. The sample can be then
analyzed for protein content by the biuret procedure, using albumin as a standard.
Data Analysis—Part 1
[00335] The effect of inhibitors on total muscle protein content can be examined
primarily by paired comparison with the untreated contralateral muscle. The ratio of
contents can be calculated and then analyzed statistically by analysis of variance
("ANOVA"). The left leg can always be the treated leg so that the protein content ratios
can be compared to the non-treated control animals as well. In this way, a significant
difference can be shown by comparing the protein content of the two legs, as well as the
relative effectiveness of the tested inhibitors. A paired student test can also be
performed for the effect of each separate treatment. The non-treated control data also
provide an estimate of protein content of day 2. This allows approximation of the
protein changes over the 24 hours of treatment for each of the Groups B, C, and D.

Experimental Design-Part 2
[00336] Each experiment can consist of 10 animals with groups of 5 animals
being tested with one of the inhibitors for its effect on protein synthesis. Control animals
are not needed for this aspect of the study as the contralateral DMSO-treated muscle
serves as the paired control for the inhibitor-treated muscle. Each group can be injected
as described for groups C and D in part 1. Twenty-four hours after the in situ treatment
the fractional rate of protein synthesis can be analyzed in both soleus muscles. Each
muscle can be injected with a 0.9% saline solution (3.5 μl/100 g final body wt)
containing 3H-phenylalanine (50 mM; 1 μCi/ml). Fifteen minutes later the middle two-
thirds of the muscle can be excised and the muscle can be processed as described below.
Processing of the Soleus Muscle—Part 2
[00337] The muscle can be first washed for 10 minutes in 0.84% saline
containing 0.5 mM cycloheximide, to terminate protein synthesis, and 20 mM
cycloleucine, to trap phenylalanine in the cell. The muscle can then be homogenized in
2.5 mL of ice-cold 2% perchloric acid. The precipitated protein can be pelleted by
centrifugation. One aliquot of the supernatant can be taken for liquid scintillation
counting and another aliquot can be processed for conversion of phenylalanine to
phenethylamine to determine the soluble phenylalanine concentration fluorometrically.
See, e.g., Garlick, et al., Biochem. J., 1980, 192, 719. These values can provide the
intracellular specific activity. The specific activity of phenylalanine in the muscle
protein can be determined after hydrolyzing the protein by heating in 6N HCI. The
amino acids released can be solubilized in buffer. One aliquot can be taken for
scintillation counting and another for analysis of phenylalanine as for the supernatant
fraction. The fractional rate of protein synthesis can be calculated as: protein specific
activity/intracellular specific activity .times/time.
Data Analysis—Part 2
[00338] Analyses of protein synthesis can be on a paired basis for each inhibitor.
Student paired t test comparisons of the contralateral muscles can determine whether
there is any effect of the inhibitor on protein synthesis. Protein breakdown can be
calculated approximately as the fractional rate of protein synthesis (from part 2) plus the

fractional rate of protein accretion (from part 1), where protein loss ylelds a negative
value for protein accretion.
[00339] Qualitatively the ability of inhibitors to slow protein loss without
affecting protein synthesis indicates a slowing of protein degradation.
Example H
In vivo Investigation of Anti-Tumor Activity
Materials
[00340] The proteasome inhibitors used for in vivo studies can be formulated in
an appropriate medium for intravenous (iv) or oral (po) administration. For example, for
the iv administration the compounds can be administered dissolved in 0.9% NaCl, or in
mixtures of 0.9% NaCl, solutol HS15 and dimethylsulfoxide, for example in the ratio
87:10:3 (v:v:v), respectively.
Cell lines
[00341] The following human and murine tumor cell lines of different
histological origine can be used to test the antitumor activity of the compounds of the
invention: H460 (human, lung), A2780 (human, ovary), PC-3 (human, prostate), LoVo
(human, colon), HCT116 (human, colon), BXPC3 (human, pancreatic), PANC-1
(human, pancreatic), MX-1 (human, mammary), MOLT (human, leukemia), multiple
myeloma (human, myeloma), YC8 (murine, lymphoma), L1210 (murine, leukemia),
3LL (murine, lung).
Animal species
[00342] 5-6 weeks immunocompetent or immunodeprived mice are purchased
from commercial sources, for example from Harlan (Correzzana, Mi Italy). CD1 nu/nu
mice are maintained under sterile conditions; sterilized cages, bedding, food and
acidified water are used.
Tumor cell implantation and growth
[00343] Solid tumor models of different hystorype (lung, ovary, breast, prostate,
pancreatic, colon) can be transplanted subcutaneously (sc.) into the axillary region of
immunocompetent mice (murine models) or in immunodeprived mice (human models).

Human tumor cell lines, originally obtained from ATCC, can be adapted to grow "in
vivo" as solid tumor from "in vitro culture".
[00344] Hematological human or murine tumor models can be transplanted into
different sites (iv, ip , ic or sc) in immunocompetent mice (murine tumors) or in
immunodeprived mice (human leukemia, lymphoma and myeloma models), according
to their highest tumor take.
Drug Treatment
[00345] Mice bearing solid (staged) or hematological tumors are randomized in
experimental groups (10 mice/group). For solid tumors, an average tumor weight of 80-
100 mg for each group is considered to start the treatment; mice with the smallest and
largest tumors are discarded.
[00346] Experimental groups are randomly assigned to the drug treatment and to
the control group. Animals can be treated iv or orally, depending on the oral
bioavailability with the compounds following different treatment schedules: iv weekly
or twice weekly, or by daily oral administration.
[00347] On solid tumor models, drug treatment can begin when the tumor size
ranges between 80-100 mg after tumor transplantation (Day 0).
[00348] The compounds can be administered in a volume of 10 mL/Kg body
weight/mouse in the appropriate solvent.
Parameters of antitumor activity
[00349] The following parameters can be assessed for the evaluation of the
antitumor activity:
- growth of primary solid tumor; in each mouse is monitored by caliper
measurement twice weekly;
- survival time of treated mice as compared to control mice
- twice weekly body weight evaluation of individual mice.
[00350] The tumor growth inhibition, TWI% (percentage of primary tumor
growth inhibition in comparison with vehicle treated control groups) or the Relative
tumor growth inhibition, RTWI% in case of staged tumors, is evaluated one week after
the last drug treatment and the Tumor weight (TW) can be calculated as follows:


where a and b are long and short diameters of the tumor mass in mm.
[00351] The antitumor activity can be determined as tumor weight inhibition
(TWI %), which is calculated according to the formula:

[00352] The RTWI% (relative percentage of primary tumor growth inhibition in
comparison with vehicle treated control groups) is evaluated one week after the last drug
treatment, according to the following formula:

[00353] The Percent of Tumor Regression can be calculated as regressions in
terms of relative tumor weight, determined as tumor weight at given day divided by
initial tumor weight at the outset the experiment.
[00354] On haematological tumour models the antitumor activity can be
determined as percentage increase of the median survival time of mice expressed as the
ratio (T/C%) of the median survival time of the treated group (T) to that of the control
group (C). Animals which are tumour-free at the end of the experiment (60 days after
transplantation) are excluded from the calculation and considered as long term survivors
(LTS).

Evaluation of toxicity in tumor bearing mice
[00355] Toxicity can be evaluated daily on the basis of the gross autopsy findings
and the weight loss. Mice are considered to have died of toxicity when death occurs
before the death of vehicle treated control animals, or when significant body weight loss
(> 20%), and/or spleen and liver size reduction are observed.
[00356] The BWC% (Body weight change %) is assessed as follow : 100- (mean
body weight of mice at given day/mean body weight at start of treatment) x 100. This
value is determined one week after the last treatment with the test compound.
Example K
In vitro Viability of Cells
[00357] The IC50 values measuring in vitro viability of cells in the presence of
test compounds can be determined according to the following procedure. Cells can be
seeded in 96-well plates at varylng densities and then assayed using the Calcein-AM
viability assay after 24 hours to determine the optimal final density for each cell type.
Cells can then be seeded in 96-well plates at the determined density in 100 ΜL of an
appropriate cell media known to one skilled in the art.
[00358] Serial dilutions of test compounds can be made so that the concentrations
are twice the desired concentration to be evaluated. When 100 μL of the dilution is then
added to the cells plated in 100 μL of media, a final concentration of, for example, 0,
11.7, 46.9, 187.5, 375, and 750 nM can be obtained. Compounds can be added to the
plates three to four hours after seeding the cells, then the plates can be incubated at 37
°C for the desired time point (e.g., one, two, or three days).
[00359] Calcein-AM viability assays can be conducted at the desired time points
as follows. Media can be aspirated using a manifold and metal plate to leave
approximately 50 μL/well. The wells can be washed three times with 200 μL DPBS,
aspirating each time with the manifold to leave 50 μL/well. A 8 μM solution of Calcein-
AM in DPBS can be prepared and 150 μL can be added to each well. The plates can
then be incubated at 37 °C for 30 minutes. After incubation, calcein can be aspirated
with the manifold and cells can be washed with 200 μL DPBS as before. After final
aspiration, fluorescence can be measured using a Cytofluor 2300 fluorescence plate

reader. Negative controls can contain media and no cells, and experiments can be
conducted in triplicate.
Example L
Kinetic Experiments in vitro
[00360] Compounds of the invention can be tested for proteasome inhibitory
activity using a protocol described in Rock, et al., Cell, 1994, 78, 761. According to this
procedure, dissociation constants (Ki) for the equilibrium established when proteasome
and test compound interact to form a complex. The reactions can be carried out using
SDS-activated 20S proteasome from rabbit muscle, and the proteasome substrate can be
Suc-LLVY-AMC.
Example M
Inhibition of Activation of NF-KB
[00361] Compounds of the invention can be tested for inhibiting the activity of
NF-KB by carrylng out the assay described in Palombella, et al., Cell, 1994, 78, 773).
For example, MG63 osteocarcinoma cells can be stimulated by treatment with TNF-α
for designated times. Whole cell extracts can be prepared and analyzed by
electrophoretic mobility shift assays using the PRDII probe from the human IFN-β gene
promoter.
Example N
Compound Activity
[00362] Using the assays of Example C and Example E above the following
Table F-l demonstrates the utility of compounds of the invention for proteasome
inhibition. In the following Tables, for the inhibition of HEP, Example C, compounds of
the present invention with a "+" are less than 1000 nM; compounds of the present
invention with a "++" are less than 100 nM; and compounds of the present invention
with a "+++" are less than 10 nM in IC50 for HEP inhibition. In the following Tables,
for the inhibition of MOLT4, Example E, compounds of the present invention with a
"+" are less than 10000 nM; compounds of the present invention with a "++" are less
than 2000 nM; and compounds of the present invention with a "+++" are less than 200
nM in EC50 for HEP inhibition. Where ">+" occurs activity was greater than the limits

of the assay. Where no IC50 value or EC50 value is represented, data has yet to be
determined.















Pharmaceutical Formulations and Dosage Forms
[00363] When employed as pharmaceuticals, the compounds of Formula (I) can
be administered in the form of pharmaceutical compositions. These compositions can be
administered by a variety of routes including oral, rectal, transdermal, subcutaneous,
intravenous, intramuscular, and intranasal, and can be prepared in a manner well known
in the pharmaceutical art.
[00364] This invention also includes pharmaceutical compositions which contain,
as the active ingredient, one or more of the compounds of Formula (I) above in
combination with one or more pharmaceutically acceptable carriers. In making the
compositions of the invention, the active ingredient is typically mixed with an excipient,
diluted by an excipient or enclosed within such a carrier in the form of, for example, a
capsule, sachet, paper, or other container. When the excipient serves as a diluent, it can
be a solid, semi-solid, or liquid material, which acts as a vehicle, carrier or medium for
the active ingredient. Thus, the compositions can be in the form of tablets, pills,
powders, lozenges, sachets, cachets, elixirs, suspensions, emulsions, solutions, syrups,
aerosols (as a solid or in a liquid medium), ointments containing, for example, up to
10% by weight of the active compound, soft and hard gelatin capsules, suppositories,
sterile injectable solutions, and sterile packaged powders.
[00365] In preparing a formulation, the active compound can be milled to provide
the appropriate particle size prior to combining with the other ingredients. If the active
compound is substantially insoluble, it can be milled to a particle size of less than 200
mesh. If the active compound is substantially water soluble, the particle size can be
adjusted by milling to provide a substantially uniform distribution in the formulation,
e.g. about 40 mesh.
[00366] Some examples of suitable excipients include lactose, dextrose, sucrose,
sorbitol, mannitol, starches, gum acacia, calcium phosphate, alginates, tragacanth,
gelatin, calcium silicate, microcrystaliine cellulose, polyvinylpyrrolidone, cellulose,
water, syrup, and methyl cellulose. The formulations can additionally include:
lubricating agents such as talc, magnesium stearate, and mineral oil; wetting agents;

emulsifylng and suspending agents; preserving agents such as methyl- and
propylhydroxy-benzoates; sweetening agents; and flavoring agents. The compositions of
the invention can be formulated so as to provide quick, sustained or delayed release of
the active ingredient after administration to the patient by employlng procedures known
in the art.
[00367] The compositions can be formulated in a unit dosage form, each dosage
containing from about 5 to about 100 mg, more usually about 10 to about 30 mg, of the
active ingredient. The term "unit dosage forms" refers to physically discrete units
suitable as unitary dosages for human subjects and other mammals, each unit containing
a predetermined quantity of active material calculated to produce the desired therapeutic
effect, in association with a suitable pharmaceutical excipient.
[00368] The active compound can be effective over a wide dosage range and is
generally administered in a pharmaceutically effective amount. It will be understood,
however, that the amount of the compound actually administered will usually be
determined by a physician, according to the relevant circumstances, including the
condition to be treated, the chosen route of administration, the actual compound
administered, the age, weight, and response of the individual patient, the severity of the
patient's symptoms, and the like.
[00369] For preparing solid compositions such as tablets, the principal active
ingredient is mixed with a pharmaceutical excipient to form a solid preformulation
composition containing a homogeneous mixture of a compound of the present invention.
When referring to these preformulation compositions as homogeneous, the active
ingredient is typically dispersed evenly throughout the composition so that the
composition can be readily subdivided into equally effective unit dosage forms such as
tablets, pills and capsules. This solid preformulation is then subdivided into unit dosage
forms of the type described above containing from, for example, 0.1 to about 500 mg of
the active ingredient of the present invention.
[00370] The tablets or pills of the present invention can be coated or otherwise
compounded to provide a dosage form affording the advantage of prolonged action. For
example, the tablet or pill can comprise an inner dosage and an outer dosage component,
the latter being in the form of an envelope over the former. The two components can be
separated by an enteric layer which serves to resist disintegration in the stomach and
permit the inner component to pass intact into the duodenum or to be delayed in release.

A variety of materials can be used for such enteric layers or coatings, such materials
including a number of polymeric acids and mixtures of polymeric acids with such
materials as shellac, cetyl alcohol, and cellulose acetate.
[00371] The liquid forms in which the compounds and compositions of the
present invention can be incorporated for administration orally or by injection include
aqueous solutions, suitably flavored syrups, aqueous or oil suspensions, and flavored
emulsions with edible oils such as cottonseed oil, sesame oil, coconut oil, or peanut oil,
as well as elixirs and similar pharmaceutical vehicles.
[00372] Compositions for inhalation or insufflation include solutions and
suspensions in pharmaceutically acceptable, aqueous or organic solvents, or mixtures
thereof, and powders. The liquid or solid compositions may contain suitable
pharmaceutically acceptable excipients as described supra. In some embodiments, the
compositions are administered by the oral or nasal respiratory route for local or systemic
effect. Compositions in can be nebulized by use of inert gases. Nebulized solutions may
be breathed directly from the nebulizing device or the nebulizing device can be attached
to a face masks tent, or intermittent positive pressure breathing machine. Solution,
suspension, or powder compositions can be administered orally or nasally from devices
which deliver the formulation in an appropriate manner.
[00373] The amount of compound or composition administered to a patient will
vary depending upon what is being administered, the purpose of the administration, such
as prophylaxis or therapy, the state of the patient, the manner of administration, and the
like. In therapeutic applications, compositions can be administered to a patient already
suffering from a disease in an amount sufficient to cure or at least partially arrest the
symptoms of the disease and its complications. An amount adequate to accomplish this
is referred to as "therapeutically effective amount." Effective doses will depend on the
disease condition being treated as well as by the judgement of the attending clinician
depending upon factors such as the severity of the disease, the age, weight and general
condition of the patient, and the like.
[00374] The compositions administered to a patient can be in the form of
pharmaceutical compositions described above. These compositions can be sterilized by
conventional sterilization techniques, or may be sterile filtered. Aqueous solutions can
be packaged for use as is, or lyophilized, the lyophilized preparation being combined
with a sterile aqueous carrier prior to administration. The pH of the compound


preparations typically will be between 3 and 11, more preferably from 5 to 9 and most
preferably from 7 to 8. It will be understood that use of certain of the foregoing
excipients, carriers, or stabilizers will result in the formation of pharmaceutical salts.
[00375] The therapeutic dosage of the compounds of the present invention can
vary according to, for example, the particular use for which the treatment is made, the
manner of administration of the compound, the health and condition of the patient, and
the judgment of the prescribing physician. The proportion or concentration of a
compound of the invention in a pharmaceutical composition can vary depending upon a
number of factors including dosage, chemical characteristics (e.g., hydrophobicity), and
the route of administration. For example, the compounds of the invention can be
provided in an aqueous physiological buffer solution containing about 0.1 to about 10%
w/v of the compound for parenteral adminstration. Some typical dose ranges are from
about 1 ng/kg to about 1 g/kg of body weight per day. In some embodiments, the dose
range is from about 0.01 mg/kg to about 100 mg/kg of body weight per day. The dosage
is likely to depend on such variables as the type and extent of progression of the disease
or disorder, the overall health status of the particular patient, the relative biological
efficacy of the compound selected, formulation of the excipient, and its route of
administration. Effective doses can be extrapolated from dose-response curves derived
from in vitro or animal model test systems.
[00376] The present invention also includes pharmaceutical kits useful, for
example, in the treatment or prevention of inflammatory diseases, which comprise one
or more containers containing a pharmaceutical composition comprising a
therapeutically effective amount of a compound of Formula (I). Such kits can further
include, if desired, one or more of various conventional pharmaceutical kit components,
such as, for example, containers with one or more pharmaceutically acceptable carriers,
additional containers, etc., as will be readily apparent to those skilled in the art.
Instructions, either as inserts or as labels, indicating quantities of the components to be
administered, guidelines for administration, and/or guidelines for mixing the
components, can also be included in the kit.
[00377] Various modifications of the invention, in addition to those described
herein, will be apparent to those skilled in the art from the foregoing description. Such
modifications are also intended to fall within the scope of the appended claims. Each

reference cited in the present application, including patents, published patent
applications, and journal articles, is incorporated herein by reference in its entirety.
A method of therapeutic, prophylactic, diagnostic or other treatment of human being or
animal is excluded from the scope of appended claims.

We Claim:
1. A compound of Formula (I)

or pharmaceutically acceptable salt, stereoisomeric or tautomeric form thereof, wherein:
R1 is C1-C8 alkyl, C2-C8 alkenyl, C2-C8 alkynyl, or C3-C7 cycloalkyl;
R2 is H, -(CH2)aCH2NHC(=NR4)NH-Y, -(CH2)bCH2CONR5R6,
-(CH2)cCH2N(R4)CONH2, -(CH2)dCH(R7)NR9R10, or -(CH2)eCH(R7)ZR8;
a, b, and c are each, independendy, 0, 1,2, 3, 4, 5, or 6;
d and e are each, independendy, 0, 1,2, 3, or 4;
R4 is H or C1-C10 alkyl;
R5 and R6 are each, independently, H, C1-C10 alkyl, carbocyclyl, heterocarbocyclyl, or an amino
protecting group;
alternatively, R5 and R6 together with the N atom to which they are attached form a
heterocarbocyclyl group;
R7 is H or C1-C10alkyl;
R8 is H, C1-C10 alkyl, alkyl-S(=O)2-, aryl-S(=O)2-, H2NS(=O)2-, -SO3H, or a protecting group;
R9 is H, C1-C10 alkyl, carbocyclyl, or heterocarbocyclyl;
R10 is H, C1-C10 alkyl, carbocyclyl, heterocarbocyclyl, C1-C10 alkyl-C(=O)-,
C2-C10 alkenyl-C(=O)-, C2-C10 alkynyl-C(=O)-, carbocyclyl-C(=O)-, heterocarbocyclyl-C(=O)-,
carbocyclylalkyl-C(=O)-,
heterocarbocyclylalkyl-C(=O)-, C1-C10 alkyl-S(=O)2-, carbocyclyl-S(=O)2-, heterocarbocyclyl-S
(=O)2-, carbocyclylalkyl-S(=O)2-,
heterocarbocyclylalkyl-S(=O)2-, C1-C10 alkyl-NHC(=O)-,
carbocyclyl-NHC(=O)-, heterocarbocyclyl-NHC(=O)-,
carbocyclylalkyl-NHC(=O)-,heterocarbocyclylalkyl-NHC(=O)-,
C1-C10 alkyl-OC(=O)-, carbocyclyl-OC(=O)-, heterocarbocyclyl-OC(=O)-, carbocyclylalkyl-OC
(=O)-, heterocarbocyclylalkyl-OC(=O)-,

C1-Cl0 alkyl-NH-C(=O)-NHS(=O)2-, carbocyclyl-NH-C(=O)-NHS(=O)3-,
heterocarbocyclyl-NH-C(=O)-NHS(=O)2-, C1-C10 alkyl-S(=O)2-NH-C(=O)-,
carbocyclyl-S(=O)2-NH-C(=O)-, heterocarbocyclyl-S(=O)2-NH-C(=O)-, or an amino
protecting group; wherein R10 is optionally substituted with 1, 2 or 3, R23;
alternatively, R9 and R10 together with the N atom to which they are attached form a
heterocarbocyclyl group optionally substituted with 1, 2 or 3 R23;
Y is H, -CN, -NO2, -S(=O)2R", or a guanidino protecting group;
R" is C1-C6 alkyl, aryl, or NR12R13;
Rl2 and R13 are, independently, H, C1-C10 alkyl, carbocyclyl, heterocarbocyclyl, or an amino
protecting group;
alternatively, R12 and R13 together with the N atom to which they are attached form a
heterocarbocyclyl group;
Z is O, S, Se, or Te;
Q is -B(OH)2, -B(OR14)2, or a cyclic boronic ester wherein said cyclic boronic ester contains from
2 to 20 carbon atoms, and, optionally, a heteroatom which can be N, S, or O;
R14 is H, C1-C4 alkyl, cycloalkyl, cycloalkylalkyl, aryl, or aralkyl;
X is RAC(=O)-, RANHC(=O)-, RAS(=O)2-, RAOC(=O)-, RASC(=O)-, or RA;
RA is C1-C20 alkyl optionally substituted with R20;
C2-C20 alkenyl optionally substituted with R20;
C2-C20 alkynyl optionally substituted with R20;
carbocyclyl optionally substituted with 1-5 R21; or
heterocarbocyclyl optionally substituted with 1-5 R21;
R20 is selected from the group consisting of:
-CN, halo, haloalkyl-, C1-C4 alkyl, C2-C4 alkenyl, C2-C4 alkynyl,
. -CO2H, -C(=O)CO2H, -C(=O)NH2, -C(=O)H, -S(=O)NH2, -S(=O)2NH2,
-OH, -SH, -NH2, -NH(alkyl), -N(alkyl)2, -NHC(=O)NH2,
-NHC(=O)R20a, -NHC(=O)OR20a, -OR20a, -SR20a, -S(=O)R20a, -S(=O)2R20a,
-S(=O)2-NHR20a, -SC(=O)R20a, -C(=O)R20a, -C(=O)NHR20a,
-C(=O)O-R20a, -NHS(=O)2R20a, -NHR20b, phthalimido,
-(O-alkyl)r-OH, -(O--alkyl)r-(O--alkyl),
-OR20c, -SR20c, -O-alkyl-R20c, -S-alkyl-R20c, -S(=O)-R20c, -S(=O)2-R20c,


-S(=O)2-NHR20c, -SC(=O)R20c, -C(=O)R20c, -C(=O)OR20c, -C(=O)NHR20c,
carbocyclyl optionally substituted with 1-5 R21; and
heterocarbocyclyl optionally substituted with 1-5 R21;
R20a is .C1-C20 alkyl, C2-C20 alkenyl, or C2-C20 alkynyl; wherein said alkyl, alkenyl, or alkynyl is
optionally substituted by one or more halo, OH, CN, C1-C4 alkyl,
C1-C4 alkoxy, C2-C8 alkoxyalkoxy, aryl, heteroaryl or -NHR20b;
R20b is an amino protecting group;
R20c is carbocyclyl optionally substituted with 1-5 R2:; or
heterocarbocyclyl optionally substituted with 1-5 R22;
R21 is selected from the group consisting of:
C1-C20 alkyl, C2-C20 alkenyl, C2-C20 alkynyl, -OR21a, -SR21a,
-CN, halo, haloalkyl, -NH2, -NH(alkyl), -N(alkyl)2, -NHC(=O)O-alkyl,
-NHC(=O)alkyl, -COOH, -C(=O)O-alkyl, -C(=O)alkyl, -C(O)H,
-S(=O)-alkyl, -S(=O)2-alkyl, -S(=O)-aryl, -S(=O)2-aryl,
carbocyclyl optionally substituted with 1-5 R22, and
heterocarbocyclyl optionally substituted with 1-5 R22;
R21a is H, C1-C20 alkyl, C2-C20 alkenyl, C2-C20 alkynyl, carbocyclyl or heterocarbocyclyl;
R22 is selected from the group consisting of:
C1-C10 alkyl, C2-C10 alkenyl, C2-C10 alkynyl, phenyl,
halo, haloalkyl, alkoxy, thialkoxy, amino, alkylamino, dialkylamino,
carboxyl, alkyl-OC(=O)-, alkyl-C(=O)-, aryl-OC(=O)-,
alkyl-OC(=O)NH-, aryl-OC(=O)NH-, alkyl-C(=O)NH-, alkyl-C(=O)O-,
(alkyl-0),-alkyl, HO-(alkyl-0),-alkyl-, -OH, -SH, -CN, -N3, -CNO, -CNS,
alkyl-S(=O)-, alkyl-S(=O)2-, H2NS(=O)-, and H2NS(=O)2-;
R23 is selected from the group consisting of:
C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl, F, Cl, Br, I, haloalkyl, -NH2,
-NHR23a, -N(R23a)2, -N3, -NO2, -CN, -CNO, -CNS, -C(=O)OR23a, -C(=O)R23a,
-OC(=O)R23a, -N(R23a)C(=O)R23a, -N(R23a)C(=O)OR23a, -C(=O)N(R23a)2,
ureido, -OR23a, -SR23a, -S(=O)-(C,-C6 alkyl), -S(=O)2-(C1-C6 alkyl),
-S(=O)-aryl, -S(=O)2-aryl, -S(=O)2-N(R23a)2;
carbocyclyl optionally substituted with 1-5 R14; and

heterocarbocyclyl optionally substituted with 1-5 R24;
R23a is H or C1-C6alkyl;
alternatively, two R23a may be combined, together with the N atom to which they are attached, to
form a 5 to 7 membered heterocyclic group; and
R24 is selected from the group consisting of:
C1-C4 alkyl, C2-C4 alkenyl, C2-C4 alkynyl. phenyl,
halo, haloalkyl, alkoxy, thialkoxy, amino, alkylamino, dialkylamino,
carboxyl, alkyl-OC(=O)-, alkyl-C(=O)-, aryl-OC(=O)-,
alkyl-OC(=O)NH-, aryl-OC(=O)NH-, alkyl-C(=O)NH-, alkyl-C(=O)O-,
(alkyl-O)r-alkyl, HO-(alkyl-O)r-alkyl-, -OH, -SH, -CN, -N3, -CNO, -CNS,
alkyl-S(=O)-, alkyl-S(=O)2-, H2NS(=O)-, and H2NS(=O)2-; and
r is 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10;
with the proviso that when Q is a 1,1,2,2-tetramethylethanediol boronic ester, then X is not
aralkyloxycarbonyl;
with the proviso that when Q is a 1,1,2,2-tetrarnethylethanediol boronic ester, and R1 is
cycloalkyl, then R2 is not -CH2CONH2; and
with the proviso that when X is RAC(=O)-, RA is a C4-C15 straight-chained alkyl substituted with
R20, and R20 is -CN, -CO2H, -C(=O)O-R20a, -NHS(=O)2R20a, -NHC(=O)R20a, -NHR20b, or
phthalimido; then R2 is not -(CH2)aCH2NHC(=NR4)NH-Y, wherein Y is H, -CN, -NO2, or
a guanidino protecting group.
2. The compound as claimed in claim 1 wherein R1 is C1-C4 alkyl.
3. The compound as claimed in claim 1 wherein R2 is -(CH2)aCH2NHC(=NR4)NH-Y,
-(CH2)bCH2CONR5R6, -(CH2)cCH2N(R4)CONH2, -(CH2)dCH(R7)NR9R10, or
-(CH2)eCH(R7)ZR8.
4. The compound as claimed in claim 1 wherein R2 is -(CH2)aCH2NHC(=NR4)NH-Y.
5. The compound as claimed in claim 4 wherein a is 1, 2, 3, or 4.


6. The compound as claimed in claim 4 wherein a is 2.
7. The compound as claimed in claim 1 wherein R2 is -(CH2)dCH(R7)NR9R10.
8. The compound as claimed in claim 7 wherein d is 0, 1, or 2.
9. The compound as claimed in claim 7 wherein d is 0.
10. The compound as claimed in claim 7 wherein R9 is H.
11. The compound as claimed in claim 1 wherein R2 is -(CH2)eCH(R7)ZR8.
12. The compound as claimed in claim 11 wherein Z is O.
13. The compound as claimed in claim 12 wherein e is 0, 1, or 2.
14. The compound as claimed in claim 12 wherein e is 0.
15. The compound as claimed in claim I wherein Q is B(OH)2 or a cyclic boronic ester
wherein said cyclic boronic ester contains from 6 to 10 carbon atoms and contains at least
one cycloalkyl moiety.
16. The compound as claimed in claim 1 wherein Q is bicyclohexyl-1,1'-diol boronic ester.
17. The compound as claimed in claim 1 wherein Q is l,2-dicyclohexyl-ethane-1,2-diol
boronic ester.
18. The compound as claimed in claim 1 wherein X is RANHC(=O)-.
19. The compound as claimed in claim 1 wherein X is RAS(=O)2-.


20. The compound as claimed in claim 1 wherein RA is C1-C14 alkyl substituted by
-(O-alkyl)r-OH or -(O-alkyl)-(O-alkyl), wherein r is 1, 2, 3, 4, or 5.
21. The compound as claimed in claim 20 wherein RA is C1-C-14 alkyl substituted by -(O-
alkyl),-OH, -(O-alkyl),-(O-alkyl), wherein r is 1, 2 or 3.
22. The compound as claimed in claim 20 wherein RA comprises at least one -CH2CH2O-
group.
23. The compound as claimed in claim 20 wherein RA is -CH2(OCH2CH2)rOCH3.
24. The compound as claimed in claim 20 wherein RA is -CH2OCH2CH2OCH2CH2OCH3 or
-CH2OCH2CH2OCH3.
25. The compound as claimed in claim 1 wherein RA is aryl or heteroaryl each optionally
substituted with 1-5 R21.
26. The compound as claimed in claim 1 wherein RA is cycloalkyl or heterocycloalkyl each
optionally substituted with 1-5 R21.
27. The compound as claimed in claim 1 wherein RA is C1-C20 alkyl; C2-C20 alkenyl; or C2-C20
alkynyl, each optionally substituted with R20.
28. The compound as claimed in claim 1 wherein RA is C1-C20 alkyl; C2-C20 alkenyl; or C2-C20
alkynyl, each substituted with a carbocyclyl group or a heterocarbocyclyl group wherein
said carbocyclyl group or heterocarbocyclyl group is optionally substituted with 1, 2 or 3
R21.
29. The compound as claimed in claim 1 wherein RA is C1-C20 alkyl; C2-C20 alkenyl; or C2-C20
alkynyl, each substituted with an aryl group wherein said aryl group is optionally
substituted with 1, 2 or 3 R21.


30. The compound as claimed in claim 1 wherein RA is C1-C20 alkyl; C2-C20 alkenyl; or C2-C20
alkynyl, each substituted with an heteroaryl group wherein said heteroaryl group is
optionally substituted with 1, 2 or 3 R21.
31. The compound as claimed in claim 1 wherein RA is C1-C20 alkyl; C2-C20 alkenyl; or C2-C20
alkynyl, each substituted with an cycloalkyl group wherein said cycloalkyl group is
optionally substituted with 1, 2 or 3 R21.
32. The compound as claimed in claim 1 wherein RA is C1-C20 alkyl; C2-C20 alkenyl; or C2-C20
alkynyl, each substituted with an heterocycloalkyl group wherein said heterocycloalkyl
group is optionally substituted with 1, 2 or 3 R21.
33. The compound as claimed in claim I wherein R2 is -CH2NH-C(=O)OCH2(C6H5).
34. The compound as claimed in claim 1 wherein RA is C1-C20 alkyl; C2-C20 alkenyl; or C2-C20
alkynyl, each optionally substituted with R20, wherein R20 is selected from
CN, halo, haloalkyl, -CO2H, -C(=O)CO2H, -C(=O)NH2, -C(=O)H,
-S(=O)NH2, -S(=O)2NH2, -OH, -SH, -NH2, -NH(alkyl), -N(alkyl)2,
-NHC(=O)NH2, -NHC(=O)R20a, -NHC(=O)OR20a, -OR20a, -SR20a,
-S(=O)R20a, -S(=O)2R20a, -S(=O)2-NHR:0a, -SC(=O)R20a, -C(=O)R20a,
-C(=O)NHR20a, -C(=O)O-R20a, -NHS(=O)2R20a, -NHR20b, phthalimido,
-(O-alkyl), -(O-alkyl)r-OH, -(O-alkyl)r-(O-alkyl),
-OR20c, -SR20c, -O-alkyl-R20c, -S-alkyl-R20c, -S(=O)-R20c, -S(=O)2-R20c,
-S(=O)2-NHR20c, -SC(=O)R20c, -C(=O)R20c, -C(=O)OR20c, and -C(=O)NHR20c.
35. The compound as claimed in claim I wherein R2 is H and
X is (O--alkyl)-(O--alkyl)r-(C1-C14 alkyl)-C(=O)- or HO-(alkyl-O)r-C1-C14 alkyl)-C(=O)-.
36 The compound as claimed in claim 1 wherein X is RAC(=O)-; RA is phenyl substituted
with one R21; and R21 is phenoxy.


37. The compound as claimed in claim 1 wherein X is RAC(=O)-, RA is C1-C4 alkyl
substituted with R20, and R20 is aryl optionally substituted with 1-3 R21.
38. The compound as claimed in claim 37 wherein aryl is substituted by at least one halo.
39. The compound as claimed in claim I wherein X is RAC(=O)-; RA is C1-C14 alkyl
substituted with R20; and R20 is -OR20a or -OR20c.
40. The compound as claimed in claim 1 wherein X is RAC(=O)-; RA is C1-C14 alkyl
substituted with R20; and R20 is heterocarbocyclyl optionally substituted with 1-3 R21.

41. The compound as claimed in claim 1 wherein X is RAS(=O)2- and RA is C3-C16 alkyl.
42. A compound as claimed in claim 1 of Formula (I):








or pharmaceutically acceptable salt, stereoisomeric or tautomeric form thereof, wherein:
R1 is C1-C8 alkyl, C2-C8 alkenyl, C1-C8 alkynyl, or C3-C7 cycloalkyl;
R2 is H, -(CH2)aCH2NHC(=NR4)NH-Y, -(CH:)bCH2CONR5R6,
-(CH2)cCH2N(R4)CONH2, -(CH2)dCH(R7)NR9R10, or -(CH2)eCH(R7)ZR8;
a, b, and c are each, independently, 0, 1,2, 3, 4, 5, or 6;
d and e are each, independently, 0, 1,2, 3, or 4;
R4 is H or C1-C10 alkyl;
R5 and R6are each, independently, H, C1-C10 alkyl, carbocyclyl, heterocarbocyclyl, or an amino
protecting group;


alternatively, R5 and R6 together with the N atom to which they are attached form a
heterocarbocyclyl group;
R7 is H or C1-C10alkyl;
R8 is H, C1-C10 alkyl, alkyl-S(=O)2-, aryl-S(=O)2-, H2NS(=O)2-, -SO3H, or a protecting group;
R9 is H, C1-C10 alkyl, carbocyclyl, or heterocarbocyclyl;
R10 is H, C1-C10 alkyl, carbocyclyl, heterocarbocyclyl, C1-C10 alkyl-C(=O)-,
carbocyclyl-C(=O)-, heterocarbocyclyl-C(=O)-, carbocyclylalkyl-C(=O)-,
heterocarbocyclylalkyl-C(=O)-, C1-C10 alkyl-S(=O)2-, carbocyclyl-S(=O)2-,
heterocarbocyclyl-S(=O)2-, carbocyclylalkyl-S(=O)2-,
heterocarbocyclylalkyl-S(=O)2-, C1-C10 alkyl-NHC(=O)-,
carbocyclyl-NHC(=O)-, heterocarbocyclyl-NHC(=O)-,
carbocyclylalkyl-NHC(=O)-, heterocarbocyclylalkyl-NHC(=O)-,
C1-C10 alkyl-OC(=O)-, carbocyclyl-OC(=O)-, heterocarbocyclyl-OC(=O)-,
carbocyclylalkyl-OC(=O)-, heterocarbocyclylalkyl-OC(=O)-, or an amino protecting
group; wherein R10 is optionally substituted with 1, 2, or 3 R23;
alternatively, R9 and R10 together with the N atom to which they are attached form a
heterocarbocyclyl group;
Y is -H, -CN, -NO2, -S(=O)2R11, or a guanidino protecting group;
R11 is C1-C6 alkyl. aryl, or NR12R13;
R12 and R13are, independently, H, C1-C10 alkyl, carbocyclyl, heterocarbocyclyl, or an amino
protecting group;
alternatively, R12 and R13 together with the N atom to which they are attached form a
heterocarbocyclyl group;
Z is O, S, Se, or Te;
Q is -B(OH)2, -B(OR14)2, or a cyclic boronic ester wherein said cyclic boronic ester contains from
2 to 20 carbon atoms, and, optionally, a heteroatom which can be N, S, or O;
R14 is H, C1-C4 alkyl, cycloalkyl, cycloalkylalkyl, aryl, or aralkyl;
X is RAC(=O)-, RANHC(=O)-, RAS(=O)2-, RAOC(=O)-, RASC(=O)-, or RA;
RA is C1-C20 alkyl optionally substituted with R20;
C2-C20 alkenyl optionally substituted with R20;


C2-C20 alkynyl optionally substituted with R20;
carbocyclyl optionally substituted with 1-5 R21; or
heterocarbocyclyl optionally substituted with 1 -5 R21;
R20 is selected from the group consisting of:
-CN, halo, haloalkyl-, C1-C4 alkyl, C2-C4 alkenyl, C2-C4 alkynyl,
-CO2H, -C(=O)CO2H, -C(=O)NH2, -C(=O)H. -S(=O)NH2, -S(=O)2NH2,
-OH, -SH, -NH2, -NH(alkyl), -N(alkyl)2, -NHC(=O)NH2,
-NHC(=O)R20a, -NHC(=O)OR20a, -OR20a, -SR20a, -S(=O)R20a, -S(=O)2R20a,
-S(=O)2-NHR20a, -SC(=O)R20a, -C(=O)R20a, -C(=O)NHR20a,
-C(=O)O-R20a, -NHS(=O)2R20a, -NHR20b, phthalimido,
-(-O-alkyl)r, -O-alkyl-OH, -(O--alkyl)-OH,
-OR20c, -SR20c, -O-alkyl-R20c, -S-alkyl-R20c, -S(=O)-R20c, -S(=O)2-R20c,
-S(=O)2-NHR20c, -SC(=O)R20c, -C(=O)R20c, -C(=O)OR20c, -C(=O)NHR20c,
carbocyclyl optionally substituted with 1-5 R21; and
heterocarbocyclyl optionally substituted with 1-5 R21;
R20a is C1-C20 alkyl, C2-C20 alkenyl, or C2-C20 alkynyl; wherein said alkyl, alkenyl, or alkynyl is
optionally substituted by one or more halo, C1-C4 alkyl, aryl, heteroaryl or -NHR20b;
R20b is an amino protecting group;
R20c is carbocyclyl optionally substituted with 1 -5 R22; or
heterocarbocyclyl optionally substituted with 1-5 R22;
R21 is selected from the group consisting of:
C1-C20 alkyl, C2-C20 alkenyl, C2-C20 alkynyl. C1-C20 alkoxy,
C1-C20 thialkoxy, -OH, -CN, halo, haloalkyl, -NH2, -NH(alkyl), -N(alkyl)2,
-NHC(=O)O-alkyl, -NHC(=O)alkyl, -C(=O)O-alkyl, -C(=O)alkyl,
-S(O)-alkyl, -S(=O)2-alkyl, -S(=O)-aryl, -S(=O)2-aryl,
carbocyclyl optionally substituted with 1-5 R22; and
heterocarbocyclyl optionally substituted with 1-5 R22;
R22 is selected from the group consisting of:
C1-C10 alkyl, C2-C10 alkenyl, C2-C10 alkynyl, phenyl,
halo, haloalkyl, alkoxy, thialkoxy, amino, alkylamino, dialkylamino,
carboxyl, alkyl-OC(=O)-, alkyl-C(=O)-, aryl-OC(=O)-,


alkyl-OC(=O)NH-, aryl-OC(=O)NH-, alkyl-C(=O)NH-, alkyl-C(=O)O-,
(alkyl-O)r-alkyl, HO-(alkyl-O)r-alkyl-, -OH, -SH, -CN, -N3, -CNO, -CNS,
alkyl-S(=O)-, alkyl-S(=O)2-, H2NS(=O)-, and H2NS(=O)2-;
R23 is selected from the group consisting of:
C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl, F, Cl, Br, I, haloalkyl, -NH2,
-NHR23a, -N(R23a)2, -N3, -NO2, -CN, -CNO, -CNS, -C(=O)OR23a, -C(=O)R23a,
-OC(=O)R23a, -N(R23a)C(=O)R23a, -C(=O)N(R23a)2, ureido, -OR23a, -SR23a,
-S(=O)2-(C1-C6 alkyl), -S(=O)2-aryl, and -S(=O)2-N(R23a)2;
R23a is H or C1-C6 alkyl;
alternatively, two R23a may be combined, together with the N atom to which they are attached, to
form a 5 to 7 membered heterocyclic group; and
r is 2, 3, 4, 5, 6, 7, 8, 9, or 10; and
with the proviso that when Q is a 1,1,2,2-tetramethylethanediol boronic ester, then X is not
aralkyloxycarbonyl;
with the proviso that when when Q is a 1,1,2,2-tetramethylethanediol boronic ester, and R' is
cycloalkyl, then R2 is not -CH2CONH2; and
with the proviso that when X is RAC(=O)-, RA is a C4-C15 straight-chained alkyl substituted with
R20, and R20 is -CN, -CO2H, -C(=O)O-R20a, -NHS(=O)2R20a, -NHC(=O)R20a, -NHR20b, or
phthalimido; then R2 is not -(CH2)aCH2NHC(=NR4)NH-Y, wherein Y is H, -CN,
-NO2, or a guanidino protecting group.
43. The compound as claimed in claim 42, or pharmaceutically acceptable salt,
stereoisomeric or tautomeric form thereof, wherein:
R1 is 2-propyl;
R2 is H, -(CH2)aCH2NHC(=NR4)NH-Y, -(CH2)bCH2CONR5R6,
-(CH2)cCH2N(R4)CONH2, -(CH2)dCH(R7)NR9R10, or -(CH2)eCH(R7)ZR8;
Q is -B(OH)2 or pinanediol boronic ester;
X is RAC(=O)-; and
RA is C4-C16 alkyl; aryl optionally substituted with 1 -3 R21; or heterocarbocyclyl group optionally
substituted with 1-3 R21.

44. A compound as claimed in claim 1 having Formula (I):

or pharmaceutically acceptable salt, stereoisomeric or tautomeric form thereof, wherein:
R1 is C1-C4 alkyl;
R2 is -(CH2)aCH2NHC(=NH)NH-Y, -(CH2)cCH2NHCONH2, or -(CH2)dCH(R7)NR9R10;
a is 1,2, or 3;
c is 1,2, or 3;
d is 0 or 1;
R7 is H or methyl;
R9 is H or C1-C10 alkyl;
R10 is H, C1-C10 alkyl, or an amino protecting group;
Y is H, CN, or NO2;
Q is -B(OH)2, pinanediol boronic ester, bicyclohexyl-1,1'-diol boronic ester, or 1,2-dicyclohexyl-
ethane-1,2-diol boronic ester;
X is RAC(=O)-, RANHC(=O)-, RAS(=O)2-, RAOC(=O)-, RASC(=O)-, or RA;
RA is C1-C20 alkyl optionally substituted with R20;
C2-C20 alkenyl optionally substituted with R20;
C2-C20 alkynyl optionally substituted with R20;
carbocyclyl optionally substituted with 1-5 R21; or
heterocarbocyclyl optionally substituted with 1-5 R21;
R20 is selected from the group consisting of:
-CN, halo, haloalkyl-, C1-C4 alkyl, C2-C4 alkenyl, C2-C4 alkynyl,
-CO2H, -C(=O)CO2H, -C(=O)NH2, -C(=O)H, -S(=O)NH2, -S(=O)2NH2,
-OH, -SH, -NH2, -NH(alkyl), -N(alkyl)2, -NHC(=O)NH2,
-NHC(=O)R20a, -NHC(=O)OR20a, -OR20a, -SR20a, -S(=O)R20a, -S(=O)2R20a,
-S(=O)2-NHR20a, -SC(=O)R20a, -C(=O)R201, -C(=O)NHR20a,


-C(=O)O-R20a, -NHS(=O)2R20a, -NHR20b, phthalimido,
-(O-alkyl)T, -O-alkyl-OH, -(O-alkyl),-OH,
-OR20c, -SR20c, -O-alkyl-R20c, -S-alkyl-R20c, -S(=O)-R20c, -S(=O)2-R20c,
-S(=O)2-NHR20c, -SC(=O)R20c, -C(=O)R20c, -C(=O)OR20c, -C(=O)NHR20c,
carbocyclyl optionally substituted with 1-5 R21; and
heterocarbocyclyl optionally substituted with 1-5 R21;
R20a is C1-C20 alkyl, C2-C20 alkenyl, or C2-C20 alkynyl; wherein said alkyl, alkenyl, or alkynyl is
optionally substituted by one or more halo, C1-C4 alkyl, aryl, heteroaryl or -NHR20b;
R20b is an amino protecting group;
R20c is carbocyclyl optionally substituted with 1-5 R22; or
heterocarbocyclyl optionally substituted with 1-5 R22;
R21 is selected from the group consisting of:
C1-C20 alkyl, C2-C2o alkenyl, C2-C20 alkynyl. C1-C20 alkoxy,
C1-C20 thialkoxy, -OH -CN, halo, haloalkyl, -NH2, -NH(alkyl), -N(alkyl)2,
-NHC(=O)O-alkyl, -NHC(=O)alkyl, -C(=O)O-alkyl, -C(=O)alkyl,
-S(=O)-alkyl, -S(=O)2-alkyl, -S(=O)-aryl, -S(=O)2-aryl,
carbocyclyl optionally substituted with 1-5 R22, and
heterocarbocyclyl optionally substituted with 1-5 R22;
R22 is selected from the group consisting of:
C1-C10 alkyl, C2-C10 alkenyl, C2-C10 alkynyl. phenyl,
halo, haloalkyl, alkoxy, thialkoxy, amino, alkylamino, dialkylamino,
carboxyl, alkyl-OC(=O)-, alkyl-C(=O)-, aryl-OC(=O)-,
alkyl-OC(=O)NH-, aryl-OG(=O)NH-, alkyl-C(=O)NH-, alkyl-C(=O)O-,
(alkyl-O)r-alkyl, HO-(alkyl-0)r-alkyl-, -OH, -SH, -CN, -N3, -CNO, -CNS,
alkyl-S(=O)-, alkyl-S(=O)2-, H2NS(=O)-, and H2NS(=O)2-; and
r is 2, 3,4, or 5;
with the proviso that when X is RAC(=O)-, RA is a C4-C15 straight-chained alkyl substituted with
R20, and R20 is -CN, -CO2H, -C(=O)O-R20a, -NHS(=O)2R20a, -NHC(=O)R20a, -NHR20b, or
phthalimido; then R2 is not -(CH2)aCH2NHC(=NR4)NH-Y, wherein Y is H, -CN, or -NO2.


45. The compound as claimed in claim 44, or pharmaceutically acceptable salt,
stereoisomeric or tautomeric form thereof, wherein:
R1 is 2-propyl;
Q is -B(OH)2 or pinanediol boronic ester;
X is RAC(=O)-; and
RA is C4-C16 alkyl; aryl optionally substituted with 1-3 R21; or heterocarbocyclyl group optionally
substituted with 1-3 R21.
46. A compound as claimed in claim 1 having Formula (I):

or pharmaceutically acceptable salt, stereoisomeric or tautomeric form thereof, wherein:
R1 is C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl, or C3-C7 cycloalkyl;
R2 is -CH2NH2 or -CH2NR9R10;
R9 is H or C1-C10 alkyl;
R10 is H, C1-C10 alkyl, carbocyclyl, heterocarbocyclyl, C1-C10 alkyl-C(=O)-, carbocyclyl-C(=O)-,
heterocarbocyclyl-C(=O)-, carbocyclylalkyl-C(=O)-, heterocarbocyclylalkyl-C(=O)-, C1-
C10 alkyl-S(=O)2-, carbocyclyl-S(=O)2-, heterocarbocyclyl-S(=O)2-, carbocyclylalkyl-S
(=O)2-,
heterocarbocyclylalkyl-S(=O)2-, C1-C10 alkyl-NHC(=O)-,
carbocydyl-NHC(=O)-, heterocarbocyclyl-NHC(=O)-,
1
carbocyclylalkyl-NHC(=O)-, heterocarbocyclylalkyl-NHC(=O)-,
C1-C10 alkyl-OC(=O)-, carbocyclyl-OC(=O)-, heterocarbocyclyl-OC(=O)-,
carbocyclylalkyl-OC(=O)-, heterocarbocyclylalkyl-OC(=O)-, or an amino protecting
group; wherein R10 is optionally substituted with 1, 2 or 3, R23;
alternatively, R9 and R10 together with the N atom to which they are attached form a
heterocarbocyclyl group;


Q is -B(OH)2, -B(ORl4)2, or a cyclic boronic ester wherein said cyclic boronic ester contains from
2 to 20 carbon atoms, and, optionally, a heteroatom which can be N, S, or O;
R14 is H, C1-C4 alkyl, cycloalkyl, cycloalkylalkyl, aryl, or aralkyl;
X is RAC(=O)-, RANHC(=O)-, RAS(=O)2-, RAOC(=O)-, RASC(=O)-, or RA;
RA is C1-C20 alkyl optionally substituted with R20;
C2-C20 alkenyl optionally substituted with R20;
C2-C20 alkynyl optionally substituted with R20;
carbocyclyl optionally substituted with 1-5 R21; or
heterocarbocyclyl optionally substituted with 1-5 R21;
R20 is selected from the group consisting of:
-CN, halo, haloalkyl-, C1-C4 alkyl, C2-C4 alkenyl, C2-C4 alkynyl,
-CO2H, -C(=O)CO2H, -C(=O)NH2, -C(=O)H, -S(=O)NH2, -S(=O)2NH2,
-OH, -SH, -NH2, -NH(alkyl), -N(alkyl)2, -NHC(=O)NH2,
-NHC(=O)R20a, -NHC(=O)OR20a, -OR20a, -SR20a, -S(=O)R20a, -S(=O)2R20a,
-S(=O)2-NHR20a, -SC(=O)R20\ -C(=O)R20a, -C(=O)NHR20a,
-C(=O)O-R20a, -NHS(=O)2R20a, -NHR20b, phthalimido,
-(O--alkyl)r, -O-alkyl-OH, -(O-alkyl)r-OH,
-OR20c, -SR20c, -O-alkyl-R20c, -S-alkyl-R20c. -S(=O)-R20c, -S(=O)2-R20c,
-S(=O)2-NHR20c, -SC(=O)R20c, -C(=O)R20c, -C(=O)OR20c, -C(-O)NHR20c,
carbocyclyl optionally substituted with 1-5 R21; and
heterocarbocyclyl optionally substituted with 1-5 R21;

R20a is C1-C20 alkyl, C2-C20 alkenyl, or C2-C20 alkynyl; wherein said alkyl, alkenyl, or alkynyl is
optionally substituted by one or more halo, C1-C4 alkyl, aryl, heteroaryl or -NHR20b;
R20b is an amino protecting group;
R20c is carbocyclyl optionally substituted with 1-5 R22; or
heterocarbocyclyl optionally substituted with 1-5 R22;
R2' is selected from the group consisting of:
C1-C20 alkyl, C2-C20 alkenyl, C2-C20 alkynyl, C1-C20 alkoxy,
C1-C10 thialkoxy, -OH -CN, halo, haloalkyl -NH2, -NH(alkyl), -N(alkyl)2,
-NHC(=O)O-alkyl, -NHC(=O)alkyl, -C(=O)O-alkyl, -C(=O)alkyl,
-S(=O)-alkyl, -S(=O)2-alkyl, -S(=O)-aryl, -S(=O)2-aryl,


carbocyclyl optionally substituted with 1-5 R21, and
heterocarbocyclyl optionally substituted with 1-5 R22;
R22 is selected from the group consisting of:
C1-C10 alkyl, C2-C10 alkenyl, C2-C10 alkynyl, phenyl,
halo, haloalkyl, alkoxy, thialkoxy, amino, alkylamino, dialkylamino,
carboxyl, alkyl-OC(=O)-, alkyl-C(=O)-, aryl-OC(=O)-,
alkyl-OC(=O)NH-, aryl-OC(=O)NH-, alkyl-C(=O)NH-, alkyl-C(=O)O-,
(alkyl-0)r-alkyl, HO-(alkyl-O)r-alkyl-, -OH, -SH, -CN, -N3, -CNO, -CNS,
alkyl-S(=O)-, alkyl-S(=O)2-, H2NS(=O)-, and H2NS(=O)2-;
R23 is selected from the group consisting of:
C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl, F, Cl, Br, I, haloalkyl, -NH2,
-NHR23a, -N(R23a)2, -N3, -NO2, -CN, -CNO, -CNS, -C(=O)OR23a, -C(=O)R23a,
-OC(=O)R23a, -N(R23a)C(=O) R23a, -C(=O)N(R23a)2, ureido, -OR23a, -SR23a,
-S(=O)2-(C1-C6 alkyl), -S(=O).-aryl, and -S(=O)2-N(R23a)2;
R23a is H or C1-C6 alkyl;
alternatively, two R23a may be combined, together with the N atom to which they are attached, to
form a 5 to 7 membered heterocyclic group; and
r is 2, 3, 4, or 5.
47. The compound as claimed in claim 46, or pharmaceutically acceptable salt,
stereoisomeric or tautomeric form thereof, wherein:
Rl is 2-propyl;
Q is pinanediol boronic ester;
X is RAC(=O)-; and
RA is C4-C16 alkyl; aryl optionally substituted with 1-3 R21; or heterocarbocyclyl group optionally
substituted with 1-3 R21.
48. The compounds as claimed in any one as claimed in claim 1, claim 42, claim 44, and
claim 46, wherein R1 is 2-propyl.

49. The compounds as claimed in any one as claimed in claim 1, claim 42, claim 44, and
claim 46wherein Q is pinanediol boronic ester.
50. The compounds as claimed in any one as claimed in claim 1, claim 42, claim 44, and
claim 46wherein X is RAC(=O)-.
51. The compounds as claimed in any one as claimed in claim 1, claim 42, claim 44, and
claim 46 wherein X is RAC(=O)- and RA is C4-C16 alkyl.
52. The compounds as claimed in any one as claimed in claim 1, claim 42, claim 44, and
claim 46wherein X is RAC(=O)- and RA is aryl optionally substituted with 1-3 R21.
53. The compounds as claimed in any one as claimed in claim 42, claim 44, and claim 46,
wherein Q is
-B(OH)2.
54. The compounds as claimed in any one as claimed in claim 42, claim 44, and claim 46
wherein R2 is
-CH2NH-C(=O)OCH2(C6H5).
55. The compounds as claimed in any one as claimed in claim 42, claim 44, and claim 46
wherein X is RAC(=O)- and RA is a heterocarbocyclyl group optionally substituted with 1-3 R21.
56. A compound as claimed in claim 1 having Formula (I):

or pharmaceutically acceptable salt, stereoisomeric or tautomeric form thereof, wherein:
R1 is C1-C8 alkyl;
R2 is -(CH2)aCH2NHC(=NH)NH-Y, -(CH2)cCH2NHCONH2, -(CH2)dCH(R7)NR9R10,
or -(CH2)cCH(R7)ZR8;


a is 1, 2, 3, 4, or 5;
c is 1, 2, 3, 4, or 5;
d is 0, 1, or 2;
e is 0, 1, or 2;
R7 is H or methyl;
R8 is H, C1-C10 alkyl, -S(=O)2-alkyl, -S(=O)2-aryl, -S(=O)2-NH2, -SO3H, or a protecting group;
Y is -H, -CN, -NO2, -S(=O)2R11, or a guanidino protecting group;
R9 is H, C1-C10 alkyl, carbocyclyl, or heterocarbocyclyl;
R10 is H, C1-C10 alkyl, carbocyclyl, heterocarbocyclyl, C1-C10 alkyl-C(=O)-, carbocyclyl-C(=O)-,
heterocarbocyclyl-C(=O)-, carbocyclylalkyl-C(=O)-, heterocarbocyclylalkyl-C(=O)-, C1-
C10 alkyl-S(=O)2-, carbocyclyl-S(=O)2-, heterocarbocyclyl-S(=O)2-, carbocyclylalkyl-S
(=O)2-,
heterocarbocyclylalkyl-S(=O)2-, C1-C10 alkyl-NHC(=O)-,
carbocyclyl-NHC(=O)-, heterocarbocyclyl-NHC(=O)-,
carbocyclylalkyl-NHC(=O)-, heterocarbocyclylalkyl-NHC(=O)-,
C1-C10 alkyl-OC(=O)-, carbocyclyl-OC(=O)-. heterocarbocyclyl-OC(=O)-,
carbocyclylalkyl-OC(=O)-, heterocarbocyclylalkyl-OC(=O)-, or an amino protecting
group; wherein R10 is optionally substituted with 1, 2 or 3 R23;
alternatively, R9 and R10 together with the N atom to which they are attached form a
heterocarbocyclyl group;
R11 is C1-C6 alkyl, aryl, or NR12R13;
Rl2 and R13 are, independently, H, C1-C10 alkyl, carbocyclyl, heterocarbocyclyl, or an amino
protecting group;
alternatively, R12 and R13 together with the N atom to which they are attached form a
heterocarbocyclyl group;
Z is O or S;
Q is -B(OH)2, -B(OR14)2, or a cyclic boronic ester wherein said cyclic boronic ester contains from
6 to 20 carbon atoms and contains at least one cycloalkyl moiety;
R14 is H, C1-C4 alkyl, or cycloalkyl;
X is RAC(=O)-, RANHC(=O)-, RAS(=O)2-, RA0C(=O)-, RASC(=O)-, or RA;
RA is C1-C20 alkyl optionally substituted with R20;


C2-C20 alkenyl optionally substituted with R20;
C2-C20 alkynyl optionally substituted with R20;
carbocyclyl optionally substituted with 1-5 R21; or
heterocarbocyclyl optionally substituted with 1-5 R21;
R20 is selected from the group consisting of:
-CN, halo, haloalkyl-, C1-C4 alkyl, C2-C4 alkenyl, C2-C4 alkynyl,
-CO2H, -C(=O)CO2H, -C(=O)NH2, -C(=O)H, -S(=O)NH2, -S(=O)2NH2,
-OH, -SH, -NH2, -NH(alkyl), -N(alkyl)2, -NHC(=O)NH2,
-NHC(=O)R20a, -NHC(=O)OR20a, -OR20a. -SR20a, -S(=O)R20a, -S(=O)2R20a,
-S(=O)2-NHR20a, -SC(=O)R20a, -C(=O)R20a, -C(=O)NHR20a,
-C(=O)O-R20a, -NHS(=O)2R20\ -NHR20b, phthalimido,
-(O-alkyl)T, -O-alkyl-OH, -(O-alkyl)r-OH,
-OR20c, -SR20c, -O-alkyl-R20c, -S-alkyl-R20c, -S(=O)-R20c, -S(=O)2-R20c,
-S(=O)2-NHR20c, -SC(=O)R20c, -C(=O)R20c, -C(=O)OR20c, -C(=O)NHR20c,
carbocyclyl optionally substituted with 1-5 R21; and
heterocarbocyclyl optionally substituted with 1-5 R21;
R20a is C1-C20 alkyl, C2-C20 alkenyl, or C2-C20 alkynyl; wherein said alkyl, alkenyl, or alkynyl is
optionally substituted by one or more halo, C1-C4 alkyl, aryl, heteroaryl or -NHR20b;
R20b is an amino protecting group;
R20c is carbocyclyl optionally substituted with 1-5 R22; or
heterocarbocyclyl optionally substituted with 1-5 R22;
R21 is selected from the group consisting of:
C1-C20 alkyl, C2-C20 alkenyl, C2-C20 alkynyl, C1-C20 alkoxy,
C1-C20 thialkoxy, -OH, -CN, halo, haloalkyl, -NH2, -NH(alkyl), -N(alkyl),,
-NHC(=O)O-alkyl, -NHC(=O)alkyl, -C(=O)O-alkyl, -C(=O)alkyl,
-S(=O)-alkyl, -S(=O)2-alkyl, -S(=O)-aryl, -S(=O)2-aryl,
carbocyclyl optionally substituted with 1-5 R22, and
heterocarbocyclyl optionally substituted with 1-5 R22;
R22 is selected from the group consisting of:
C1-C10 alkyl, C2-C10 alkenyl, C2-C10 alkynyl, phenyl,
halo, haloalkyl, alkoxy, thialkoxy, amino, alkylamino, dialkylamino,


carboxyl, alkyl-OC(=O)-, alkyl-C(=O)-, aryl-OC(=O)-,
alkyl-OC(=O)NH-, aryl-OC(=O)NH-, alkyl-C(=O)NH-, alkyl-C(=O)O-,
(alkyl-O)r-alkyl, HO-(alkyl-O)r-alkyl-, -OH, -SH, -CN, -N3, -CNO, -CNS,
alkyl-S(=O)-, alkyl-S(=O)2-, H2NS(=O)-, and H2NS(=O)2-;
R23 is selected from the group consisting of:
C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl, F, Cl, Br, I, haloalkyl, -NH2,
-NHR23a, -N(R23a)2, -N3, -NO2, -CN, -CNO, -CNS, -C(=O)OR23a, -C(=O)R23a,
-OC(=O)R23a, -N(R23a)C(=O) R23a, -C(=O)N(R:3a)2, ureido, -OR23a, -SR23a,
-S(=O)2-(C1-C6 alkyl), -S(=O)2-aryl, and -S(=O)2-N(R23a)2;
R23a is H or C1-C6 alkyl;
alternatively, two R23a may be combined, together with the N atom to which they are attached, to
form a 5 to 7 membered heterocyclic group; and
r is 2, 3,4, 5, 6, 7, 8, 9, or 10;
with the proviso that when X is RAC(=O)-, RA is a C4-C15 straight-chained alkyl substituted with
R20, and R20 is -CN, -CO2H, -C(=O)O-R20a, -NHS(=O)2R20a, -NHC(=O)R20a, -NHR20b, or
phthalimido; then R2 is not
-(CH2)aCH2NHC(=NR4)NH-Y, wherein Y is H, -CN, -NO2, or a guanidino protecting
group.
57. A compound as claimed in claim 1 having Formula (I):

or pharmaceutically acceptable salt, stereoisomeric or tautomeric form thereof, wherein:
R1 is C1-C8 alkyl, C2-C8 alkenyl, C2-C8 alkynyl, or C3-C7 cycloalkyl;
R2 is H;
Q is -B(OH)2, -B(OR14)2, or a cyclic boronic ester wherein said cyclic boronic ester contains from
2 to 20 carbon atoms, and, optionally, a heteroatom which can be N, S, or O;


R14 is H, C1-C4 alkyl, cycloalkyl, cycloalkylalkyl, aryl, or aralkyl;
X is RAC(=O)-, RANHC(=O)-, RAS(=O)2-, RAOC(=O)-, RASC(=O)-, or RA;
RA is C1-C20 alkyl optionally substituted with R20;
C2-C20 alkenyl optionally substituted with R20;
C2-C20 alkynyl optionally substituted with R20;
carbocyclyl optionally substituted with 1-5 R22; or
heterocarbocyclyl optionally substituted with 1-5 R22;
R20 is selected from the group consisting of:
-OR20a, -SR20, -S(=O)R20a, -S(=O)2R20a, -S(=O)2-NHR20a, -SC(=O)R20a,
-C(=O)R20a, -C(=O)NHR20a, -C(=O)O-R20a, phthalimido,
-(O-alkyl)T, -O-alkyl-OH, -(O--alkyl)r-OH,
-OR20c, -SR20c, -O-alkyl-R20c, -S-alkyl-R20c, -S(=O)-R20c, -S(=O)2-R20c,
-S(=O)2-NHR20c, -SC(=O)R20c, -C(=O)R20c, -C(=O)OR20c, -C(=O)NHR20c,
carbocyclyl optionally substituted with 1-5 R22; and
heterocarbocyclyl optionally substituted with 1-5 R22;
R20a is C1-C20 alkyl, C2-C20 alkenyl, or C2-C20 alkynyl; wherein said alkyl, alkenyl, or alkynyl is
optionally substituted by one or more halo, C1-C4 alkyl, aryl, heteroaryl or -NHR20b;
R20c is carbocyclyl optionally substituted with 1-5 R22: or
heterocarbocyclyl optionally substituted with 1-5 R22;
R22 is selected from the group consisting of:
C1-C10 alkyl, C2-C10 alkenyl, C2-C10 alkynyl, phenyl,
halo, haloalkyl, alkoxy, thialkoxy, amino, alicylamino, dialkylamino,
carboxyl, alkyl-OC(=O)-, alkyl-C(=O)-, aryl-OC(=O)-,
alkyl-OC(=O)NH-, aryl-OC(=O)NH-, alkyl-C(=O)NH-, alkyl-C(=O)O-,
(alkyl-O)ralkyl, HO-(alkyl-O)r-alkyl-, -OH, -SH, -CN, -N3, -CNO, -CNS,
alkyl-S(=O)-, alkyl-S(=O)2-, H2NS(=O)-, and H2NS(=O)2-; and
r is 2, 3,4, 5, 6, 7, 8, 9, or 10.
58. The compound as claimed in claim 57 wherein:
X is RAC(=O)-, RANHC(=O)-, RAS(=O)2-, or RA;
RA is C1-C14 alkyl optionally substituted with R20;


R20 is -O-alkyl, -(O-alkylX, -O-alkyl-OH, or -(O--alkyl)-OH; and
r is 2, 3, 4, or 5.
59. The compound as claimed in claim 57 wherein said O-alkyl is methoxy, ethoxy, or
propoxy.
60. A compound as claimed in claim 1 of Formula (I):

or pharmaceutically acceptable salt, stereoisomeric or tautomeric form thereof, wherein:
R1 is 2-propyl;
R2 is -CH2CH2CH2NHC(=NH)NH-NO2, -CH2CH2CH2NHC(=O)NH2, -CH(CH3)OH,
-CH2CONH2, -CH2NH2, or -CH2NR9R10;
R9 is H;
R10 is methyl-C(=O)-, ethyl-C(=O)-, propyl-C(=O)-, butyl-C(=O)-, pentyl-C(=O)-,
2-(ethoxycarbonyl)ethyl-C(=O)-, 4-methyl-phenyl-C(=O)-, cyclopropyl-C(=O)-,
4-fluoro-phenyl-C(=O)-,4-H2NSO2-phenyl-C(=O)-,4-H3CSO2-phenyl-C(=O)-,
4-phenyl-phenyl-C(=O)-, 3,4-dimethoxy-benzyl-C(=O)-, 3-pyridinyl-C(=O)-,
2-(hydroxy)-pyridin-3-yl-C(=O)-, 6-(morpholino)-pyridin-3-yl-C(=O)-,
2-(pyridin-4-yl)thiazol-4-yl-C(=O)-, 2-pyrazinyl-C(=O)-,
2,5-dimethyl-pyrazolyl-C(=O)-, N-methyl-2-pyrrolyl-C(=O)-,
2-pyrrolidinyl-C(=O)-, 2-thiophenyl-C(=O)-, 5-isoxazolyl-C(=O)-,
4-(tetrazol-5-yl) phenyl-C(=O)-, (5-tetrazolyl)CH2-C(=O)-,
N-H3CSO2-piperidinyl-C(=O)-, butyl-OC(=O)-, (benzyl)-OC(=O)-,
(9-fluorenylmethyl)-OC(=O)-, pentyl-NHC(=O)-, propyl-NHC(=O)-,
phenyl-NHC(=O)-, 4-methyl-phenyl-NHC(=O)-, methyl-S(=O)2-,
4-fluoro-phenyl-S(=O)2-, 4-cyano-phenyl-S(=O)2-,


1-methyl-imidazol-4-yl-S(=O)2-, 2-thiophenyl-S(=O)2-,
(4-methyl-phenyl)-NHC(=O)NH-S(=O)2-, and
(4-methyl-phenyl)-S(=O)2NHC(=O)-,
alternatively, R9 and R10 together with the N atom to which they are attached form pyrrolyl or
pyrazolyl;
Q is -B(OH)2, pinanediol boronic ester, bicyclohexyl-1,1'-diol boronic ester, or 1,2-dicyclohexyl-
ethane-1,2-diol boronic ester;
X is RAC(=O)-, RANHC(=O)-, RAS(=O)2-, or RAOC(=O)-;
R is CH3-, C2H5-, C3H7-, C4H9-, C5H11-, C6H13-, C7H15-, C8H17-, C9H19-, C10H21-, C11H23-,
C12H25-, C13H27-, adamantyl-, bicycloheptanyl-,
C13 alkyl substituted with R20;
C2-10 alkenyl substituted with R20;
cyclopropyl substituted with 0-3 R21;
cyclopenryl substituted with 0-2 R21;
cyclohexyl substituted with 0-2 R21;
phenyl substituted with 0-3 R21;
naphthyl- substituted with 0-2 R21;
pyrazinyl substituted with 0-1 R21;
quinolinyl substituted with 0-1 R21;
imidazolyl substituted with 0-1 R21;
tetrahydrofuranyl substituted with 0-1 R21;
oxothiazolidinyl substituted with 0-1 R21;
benzothiazolyl substituted with 0-1 R21;
thiazolyl substituted with 0-2 R21;
furanyl substituted with 0-2 R21;
pyrrolidinyl substituted with 0-1 R21;
piperidinyl substituted with 0-1 R21;
piperazinyl substituted with 0-1 R21; or
pyridinyl substituted with 0-1 R21;
R20 is selected from the group consisting of:
hydroxy-, methoxy-, ethoxy-, propoxy-, butoxy-, pentoxy-, hexyloxy-,


heptyloxy-, octyloxy-, methoxyethoxy-, methoxyethoxyethoxy-,
methyl-S-, ethyl-S-, octyl-S-, methyl-C(=O)S-, (acetylamino)methyl-S-,
amino-, methylamino-, dimethylamino-, methyl-C(=O)-, phenyl-C(=O)-,
(H3CSO2)phenyl-C(=O)-, thiophenyl-C(=O)-, methyl-OC(=O)-, ethyl-OC(=O)-,
butyl-OC(=O)NH-, methyl-C(=O)NH-, rnethoxyethoxy-methyl-C(=O)NH-,
H2NC(=O)-, methyl-NHC(=O)-, ethyl-NHC(=O)-, propyl-NHC(=O)-,
phenyl-NHC(=O)-, H2NC(=O)NH-, H2NS(=O)2-, octyl-S(=O)2-,
phenyl-S(=O)2-, methylphenyl-S(=O)2-, thiophenyl-S(=O)2-, cyclopentyl-, cyclohexyl-,
cycloheptyl-, adamantyl-, bicycloheptanyl-, cyclopentenyl-,
phenyl-, methoxy-phenyl-, methyl-phenyl-, dimethyl-phenyl-, ethyl-phenyl-,
propyl-phenyl-, butyl-phenyl-, fluoro-phenyk difluoro-phenyl-, chloro-phenyl-,
bromo-phenyl-, iodo-phenyl-, dimethylamino-phenyl-, cyclohexyloxy-,
2-isopropyl-5-methyl-cyclohexyloxy-, naphthyl-, methoxynaphthyl-,
naphthyloxy-, phenoxy-, (methyl-phenyl)oxy-, (ethyl-phenyl)oxy-,
(propyl-phenyl)oxy-, (butyl-phenyl)oxy-, (fluoro-phenyl)oxy-,
(chloro-phenyl)oxy-, (bromo-phenyl)oxy-, naphthyl-S-, benzyl-S-,
(methyl-phenyl)methyl-S-, pyrimidinyl-S-, piperidinyl-, N-methyl-piperidinyl-,
N-propyl-piperidinyl-, phthalimido-, thiophenyl-, methyl-thiophenyl-,
imidazolyl-, furnayl-, tetrazolyl-, oxopyrrolidinyl-, indolyl-, and
methyl-indolyl-; and
R21 is selected from the group consisting of:
methyl-, ethyl-, propyl-, butyl-, pentyl-, hexyl-, heptyl-, ethenyl-, propenyl-,
butenyl-, methoxy-, ethoxy-, propoxy-, phenoxy-, fluoro-, chloro-, bromo-,
methyl-C(=O)-, butyl-OC(=O)-, butyl-OC(=O)NH-, phenyl-, methoxyphenyl-,
fluorophenyl-, chlorophenyl-, bromophenyl-, pyrrolyl-, and pyridinyl-.


































































or a pharmaceutically acceptable salt or free base form thereof.
62. The compound as claimed in claim 1 selected from:



























or a pharmaceutically acceptable salt or free base form thereof.
63. A pharmaceutical composition comprising a compound as claimed in any one of claims
1-62 and a pharmaceutically acceptable carrier.
64. The composition as claimed in claim 63, wherein said composition is useful for inhibiting
the activity of proteasome.
65. An in vitro method of inhibiting proteasome comprising contacting a compound as
claimed in any one of claims 1-62 with said proteasome.
66. The composition as claimed in claim 63, wherein said composition is useful for the
treatment of cancer.
67. The composition as claimed in claim 63, wherein said composition is useful for the
treatment of cancer in a mammal having or predisposed to said cancer in combination with one
or more known antitumor or anticancer agent(s) and/or radiotherapy.
68. The composition as claimed in any one of claim 66 and claim 67, wherein the cancer for
which it is useful is selected from skin, prostate, colorectal, pancreas, kidney, ovary, mammary,
liver, tongue, lung, and smooth muscle tissue.

69. The composition as claimed in any one of claim 66 and claim 67 , wherein the cancer is
selected from leukemia, lymphoma, non-Hodgkin lymphoma, myeloma, and multiple myeloma.
70. The composition as claimed in claim 63, wherein the said composition is useful for
inhibiting the degradation of a protein by contacting a proteasome capable of degrading said
protein.
71. An in vitro method of inhibiting the degradation of a protein comprising contacting
proteasome capable of degrading said protein with a compound as claimed in any one of claims
1-62.
72. The composition as claimed in claim 70, wherein said protein is marked with ubiquitin.
73. The composition as claimed in claim 70, wherein said protein is p53.
74. The composition as claimed in claim 63, wherein said composition is useful for treating a
mammal having or predisposed to accelerated or enhanced proteolysis.
75. The composition as claimed in claim 63, wherein said composition is useful for
inhibiting the activity of transcription factor NF-KB.
76. An in vitro method of inhibiting the activity of NF-KB comprising contacting IKB, the
inhibitor of NF-KB, with a compound as claimed in any one as claimed in claims 1-13.
77. The composition as claimed in claim 63, wherein said composition is useful for treating
a mammal having or predisposed to said disease or disorder selected from human
immunodeficiency virus (HIV) infection or inflammatory disorders resulting from transplantation
rejection, arthritis, infection, inflammatory bowel disease, asthma, osteoporosis, osteoarthritis,
psoriasis, restenosis, and autoimmune diseases.
78. A process for preparing a compound of Formula (II):


wherein:
D is absent, O, S, NR16, or CR15eR15f;
R1 is C1-C8 alkyl, C2-C8 alkenyl, C2-C8 alkynyl, or C3-C7 cycloalkyl;
R15a, R15b, Rl5c, R15d, R15e, R15f are each, independently, H, C1-C10 alkyl, C3-C7 cycloalkyl,
aryl or heteroaryl, wherein said C1-C10 alkyl, C3-G10 cycloalkyl, aryl or heteroaryl are each
optionally substituted by 1, 2, 3 or 4 halo, C1-C4 alkyl, C1-C4 alkoxy, C1-C4 haloalkoxy, OH,
amino, alkylamino, dialkylamino, aryl, or heteroaryl;
or R15a and R15b together with the C atoms to which they are attached form C3-C10
cycloalkyl or a 3- to 10-membered heterocycloalkyl group, each optionally substituted by 1, 2, 3
or 4 halo, C1-C4 alkyl, C1-C4 alkoxy, C1-C4 haloalkoxy, OH, amino, alkylamino, dialkylamino,
aryl, or heteroaryl;
or R15c and R15d together with the C atoms to which they are attached form C3-C10
cycloalkyl or a 3- to 10-membered heterocycloalkyl group, each optionally substituted by 1, 2, 3
or 4 halo, C1-C4 alkyl, C1-C4 alkoxy, C1-C4 haloalkoxy, OH, amino, alkylamino, dialkylamino,
aryl, or heteroaryl;
or Rl5b and R15c together with the C atoms to which they are attached and the intevening D
moiety form aryl, heteroaryl, C3-C10 cycloalkyl or a 3- to 10-membered heterocycloalkyl group,
each optionally substituted by 1, 2, 3 or 4 halo, C1-C4 alkyl, C1-C4 alkoxy, C1-C4 haloalkoxy, OH,
amino, alkylamino, dialkylamino, aryl, or heteroaryl;
R16 is H or C1-C6 alkyl; and
p and q are each, independently, 1, 2 or 3;
comprising a) reacting a diol of Formula (II-b):

with an appropriate trialkoxyborane of Formula (Il-a):


wherein each R17 is, independently, C1-C10 alkyl or C3-C10 cycloalkyl;
to form an intermediate of Formula (II-c):

and b) reacting the intermediate of Formula (II-c) with either i) a reagent of formula R1CH2MXh,al,
wherein M is a metal and Xhal is a halogen, or ii) a reagent of formula R1CH2Li, to form the
compound of Formula (II).
79. The process as claimed in claim 78 wherein R'7 is C1-C4 alkyl.
80. The process as claimed in claim 78 wherein R17 is isopropyl.

81. The process as claimed in claim 78 wherein the diol of Formula (II-b) is pinanediol,
pinacol, 1,2-ethanediol, 1,3-propanediol, 1,2-propanediol, 2,3-butanediol,
1,1,2,2-tetramethylethanediol, 1,2-diisopropylethanediol, 5,6-decanediol,
1,2-dicyclohexylethanediol, bicyclohexyl-1,1'-diol, diethanolamine, or
l,2-diphenyl-1,2-ethanediol.
82. The process as claimed in claim 78 wherein the diol of Formula (II-b) is pinanediol.
83. The process as claimed in claim 78 wherein R1CH2MXhal is R1CH2MgBr.
84. The process as claimed in claim 78 wherein R1 is isopropyl.
85. The process as claimed in claim 78 for preparing a compound of Formula (II-i):
comprising
a) reacting (1S, 2S, 3R, 5S)-(+)-pinanediol with triisopropoxy borane to form an intermediate of
Formula (Il-ii):

and b) reacting the intermediate of Formula (II—ii) with isobutyl magnesium bromide to form the
compound of Formula (II-i).
86. A process for the preparation of compounds of Formula (I):


wherein:
R1 is C1-C6 alkyl, C2-C6 alkenyl, C2-C6 alkynyl, or C2-C7 cycloalkyl;
R2 is -CH2NH2;
Q is -B(ORl4)2, or a cyclic boronic ester wherein said cyclic boronic ester contains from 2 to 20
carbon atoms, and, optionally, a heteroatom which can be N, S, or O;
R14 is C1-C4 alkyl, cycloalkyl, cycloalkylalkyl, aryl, or aralkyl;
X is RAC(=O)-;
RA is C1-C20 alkyl optionally substituted with R20;
C2-C20 alkenyl optionally substituted with R20;
C2-C20 alkynyl optionally substituted with R20;
carbocyclyl optionally substituted with 1-5 R21; or
heterocarbocyclyl optionally substituted with 1 -5 R21;
R20 is selected from the group consisting of:
-CN, halo, haloalkyl-, C1-C4 alkyl, C2-C4 alkenyl, C2-C4 alkynyl,
-CO2H, -C(=O)CO2H, -C(=O)NH2, -C(=O)H, -S(=O)NH2, -S(=O)2NH2,
-OH, -SH, -NH2, -NH(alkyl), -N(alkyl)2, -NHC(=O)NH2,
-NHC(=O)R20a, -NHC(=O)OR20a, -OR20a, -SR20,a, -S(=O)R20a, -S(=O)2R20a,
-S(=O)2-NHR20a, -SC(=O)R20a, -C(=O)R20a, -C(=O)NHR20a,
-C(=O)O-R20a, -NHS(=O)2R20a, -NHR20b, phthalimido,
-(O-alkyl)r, -O-alkyl-OH, -(O-alkyl)r-OH,
-OR20c, -SR20c, -O-alkyl-R20c, -S-alkyl-R20c, -S(=O)-R20c, -S(=O)2-R20c,
-S(=O)2-NHR20c, -SC(=O)R20c, -C(=O)R20c, -C(=O)OR20c, -C(=O)NHR20c,
carbocyclyl optionally substituted with 1-5 R21; and
heterocarbocyclyl optionally substituted with 1 -5 R21;

R20a is C1-C20 alkyl, C2-C20 alkenyl, or C2-C20 alkynyl; wherein said alkyl, alkenyl, or alkynyl is
optionally substituted by one or more halo, C1-C4 alkyl, aryl, heteroaryl or -NHR20b;
R20b is an amino protecting group;
R20c is carbocyclyl optionally substituted with 1-5 R22; or
heterocarbocyclyl optionally substituted with 1 -5 R22;
R21 is selected from the group consisting of:
C1-C20 alkyl, C2-C20 alkenyl, C2-C20 alkynyl, C1-C20 alkoxy,
C1-C20 thialkoxy, -OH -CN, halo, haloalkyl, -NH2, -NH(alkyl), -N(alkyl)z,
-NHC(=O)O-alkyl, -NHC(=O)alkyl, -C(=O)O-alkyl, -C(=O)alkyl,
-S(=O)-alkyl, -S(=O)2-alkyl, -S(=O)-aryl, -S(=O)2-aryl,
carbocyclyl optionally substituted with 1-5 R22, and
heterocarbocyclyl optionally substituted with 1-5 R22;
R22 is selected from the group consisting of:
C1-C10 alkyl, C2-C10 alkenyl, C2-C10 alkynyl, phenyl,
halo, haloalkyl, alkoxy, thialkoxy, amino, alkylamino, dialkylamino,
carboxyl, alkyl-OC(=O)-, alkyl-C(=O)-, aryl-OC(=O)-,
alkyl-OC(=O)NH-, aryl-OC(=O)NH-, alkyl-C(=O)NH-, alkyl-C(=O)O-,
(alkyl-O)r-alkyl, HO-(alkyl-O)r-alkyl-, -OH, -SH, -CN, -N3, -CNO, -CNS,
alkyl-S(=O)-, alkyl-S(=O)2-, H2NS(=O)-, and H2NS(=O)2-; and
r is 2, 3,4, or 5; comprising:
reacting a compound of Formula (I) wherein R2 is -CH2NH-C(=O)OCH2(C6H5);
with a suitable hydrogenation agent to form the compound of Formula (I) wherein R2 is
-CH2NH2, provided the hydrogenation agent is selective for the benzyloxycarbonyl group of R2.
87. The process as claimed in claim 86 wherein the hydrogenation agent is 10 wt.%
palladium on carbon and HCl in 1,4-dioxane.
88. The compound as claimed in claim 1, wherein said compound is :

The invention discloses Boronic acid and Ester compounds :
wherein X, Q, R1 and R2 are as defined in the specification.
The invention is also for pharmaceutical compositions, comprising them and process for
their preparation.

Documents:

565-KOLNP-2006-CORRESPONDENCE.pdf

565-KOLNP-2006-FORM 27-1.1.pdf

565-KOLNP-2006-FORM 27.pdf

565-KOLNP-2006-FORM-27.pdf

565-kolnp-2006-granted-abstract.pdf

565-kolnp-2006-granted-assignment.pdf

565-kolnp-2006-granted-claims.pdf

565-kolnp-2006-granted-correspondence.pdf

565-kolnp-2006-granted-description (complete).pdf

565-kolnp-2006-granted-examination report.pdf

565-kolnp-2006-granted-form 1.pdf

565-kolnp-2006-granted-form 13.pdf

565-kolnp-2006-granted-form 18.pdf

565-kolnp-2006-granted-form 3.pdf

565-kolnp-2006-granted-form 5.pdf

565-kolnp-2006-granted-pa.pdf

565-kolnp-2006-granted-reply to examination report.pdf

565-kolnp-2006-granted-specification.pdf


Patent Number 231455
Indian Patent Application Number 565/KOLNP/2006
PG Journal Number 10/2009
Publication Date 06-Mar-2009
Grant Date 04-Mar-2009
Date of Filing 09-Mar-2006
Name of Patentee CEPHALON, INC.
Applicant Address 41 MOORES ROAD, FRAZER, PA
Inventors:
# Inventor's Name Inventor's Address
1 CASSARA PAOLO G VIA OSLAVIA, 25, I-20052 MONZA
2 CHATTERJEE SANKAR 1375 WEST INDIA CREEK DRIVE, WYNNEWOOD, PA 19096
3 BERNAREGGI ALBERTO VIA ADIGE, 25, I-20049 CONCOREZZO
4 FERRETTI EDMONDO VIA CIRCONDARIO A PONENTE, 131, I-LUGO
5 IQBAL MOHAMED 54 GRUBB ROAD, MALVERN, PA 19355
6 MENTA ERNESTO VIA FRANCESCO BARACCA, 7, I-20063 CERNUSCO SUL NAVIGLIO
7 MESSINA MCLAUGHLIN PATRICIA A 22 HUNTINGDON FARM ROAD, GLEN MILLS, PA 19342
8 OLIVA AMBROGIO VIA VISCONTI, 27, I-21047, SARONNO
9 D'ARASMO GERMANO VIA ALESSANDRO VOLTA 9, I-20026, NOVATE MILANESE
10 DE MUNARI SERGIO VIA FRANCESCO ALBANI 55, I-20148, MILANO
11 BERNARDINI RAFFAELLA VIA NICOSIA 2, I-56011, CALCI
PCT International Classification Number C07F 5/02,A61K 31/69
PCT International Application Number PCT/US2004/026407
PCT International Filing date 2004-08-13
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 60/495,764 2003-08-14 U.S.A.
2 10/918,664 2004-08-12 U.S.A.