Title of Invention

"AROMATIC SULFONES AND THEIR MEDICAL USE"

Abstract The invention provides compounds of formula (I): wherein A and B represent the groups -(CH2)m- and -(CII2)n-respectivelyjR 1 represents hydrogen or Cl-6alkyl;R2 represents hydrogen, halogen, hydroxy, cyano, nitro, hydroxyCI-fialkyl. trifluoromethyl, trifluoromelhaxy, Cl-6alkyl, Cl-6alfcoxy, CI -6fluoroalkoxy, -(CH2)pC3-6cycloalkyI, -(CH2)pOC3-6cycloalkyl, -COCl-6alkyl, -SO2C1-6alkyl. -SOCl-6alkyl, -S-Cl-6alkyl, -CO2CI-6alkyl, -CO2NR5R6, -SO2NR5R6, -(CH2)pNR5R6, -(CH2)pNR5COR6, optionally substituted aryl ring, optionally substituted heteroaryl ring or optionally substituted heterocyclyl ring:R3 represents optionally substituted aryl ring or optionally substituted hcteroaryl ring:R4 represents hydrogen, hydroxy, Cl-6alkyl, Cl-6alkoxy, trifluoromethyl, triflnoromethoxy, halogen. -OSO2CF3, -(CII2)pC3-6cycloa)ky1, -(CH2)qOCl-6alkyl or -(CH2)pOC3-6cycloalkyl;R5 and R6 each independently represent hydrogen, Cl-6alkyl or, together with the nitrogen or other atoms to which they arc attached, form an azacycloalkyl ring or an oxo-substituted uzacycloalkyl ring;Z represents -(CH2)rX-whcrein the -(CH2)r- group is attached to R3, or -X(CH2)r- wherein X is attached to R3, and wherein any of the -CH2- groups may be optionally substituted by one or more C1 -6alkyl groups;X represents oxygen, -NR7 or -CH2- wherein the -CH2- group may be optionally substituted by one or more Cl-6alkyl groups;R7 represents hydrogen or Cl-6alkyl;m and n independently represent an integer selected from 1 and 2;p independently represents an integer selected from 0, 1, 2 and 3; q independently represents an integer selected from 1, 2 and 3; r independently represents an integer selected from 0, 1, and 2; or a pharmaceutically acceptable salt or solvate thereof.The compounds are useful in therapy, in particular as antipsychotic agents.
Full Text Compounds
This invention relates to novel compounds, pharmaceutical compositions containing them
and their use in therapy, in particular as antipsychotic agents.
International patent application WO 01/62737 discloses amino pyrazole derivatives which
are ligands for the neuropeptide Y subtype 5 receptor and are said to be useful in the
treatment of disorders and disease associated with this receptor including, inter alia,
obesity, anxiety, depression, pain and schizophrenia.
International patent application WO 01/85695 discloses tetrahydroisoquinoline analogues
useful as growth hormone secretagogues. Such analogues are also said to be useful in
the treatment of disorders including inter alia, obesity, schizophrenia, depression and
Alzheimer's disease.
We have now found a novel group of phenylsulfonyl compounds which are useful
particularly as antipsychotic agents.
According to the invention, there is provided a compound of formula (I):
(I)
wherein
A and B represent the groups -(CH2)m- and -{CH2)n- respectively;
R1 represents hydrogen or C^alkyl;
R2 represents hydrogen, halogen, hydroxy, cyano, nitro, hydroxyC^alkyl, trifluoromethyl,
trifluoromethoxy, Chalky!, C^alkoxy, C^fluoroalkoxy, -(CH2)pC3^cycloalkyl, -(CH2)POC3.
6cycloalkyl, -COC^alkyl, -SO2C^alkyl, -SOCi^alkyl, -S-C^alkyl, -CO2C,^alkyl, -
C02NR5R6, -SO2NR5R8, -(CH2)PNR5R8, -(CH2)PNR5COR8, optionally substituted aryl ring,
optionally substituted heteroaryl ring or optionally substituted heterocyclyl ring;
R3 represents optionally substituted aryl ring or optionally substituted heteroaryl ring;
R4 represents hydrogen, hydroxy, C^alkyl, Ci^alkoxy, trifluoromethyl, trifluoromethoxy,
halogen, -OSO2CF3, -(CH2)pCMcycloalkyl, -(CH2)qOC,^alkyl or -(CH2)pOC3-6cycloalkyl;
R5 and R6 each independently represent hydrogen, d^alkyl or, together with the nitrogen
or other atoms to which they are attached, form an azacycloalkyl ring or an oxosubstituted
azacycloalkyl ring;
Z represents -(CH2)rX- wherein the -(CH2)r- group is attached to R3, or -X(CH2)f- wherein
X is attached to R3, and wherein any of the -CH2- groups may be optionally substituted by
one or more Chalky! groups;
1
X represents oxygen, -NR7 or -CH2- wherein the -CH2- group may be optionally
substituted by one or more Chalky! groups;
R7 represents hydrogen or d^alkyl;
m and n independently represent an integer selected from 1 and 2;
p independently represents an integer selected from 0, 1, 2 and 3;
q independently represents an integer selected from 1, 2 and 3;
r independently represents an integer selected from 0, 1, and 2;
or a pharmaceutically acceptable salt or solvate thereof.
It is to be understood that the present invention covers all combinations of particular and
preferred groups described herein above.
As used herein, the term "alky!" refers to straight or branched hydrocarbon chains
containing the specified number of carbon atoms. For example, Ci^alkyl means a straight
or branched alkyl containing at least 1, and at most 6, carbon atoms. Examples of "alky!"
as used herein include, but are not limited to, methyl, ethyl, n-propyl, n-butyl, n-pentyl, nhexyl,
isobutyl, isopropyl, t-butyl and 1,1-dimethylpropyl.
As used herein, the term "alkoxy" refers to a straight or branched alkoxy group containing
the specified number of carbon atoms. For example, C^alkoxy means a straight or
branched alkoxy group containing at least 1, and at most 6, carbon atoms. Examples of
"alkoxy" as used herein include, but are not limited to, methoxy, ethoxy, propoxy, prop-2-
oxy, butoxy, but-2-oxy, 2-methylprop-1-oxy, 2-methy!prop-2-oxy, pentoxy or hexyloxy.
As used herein, the term "C^fluoroalkoxy " refers to a straight or branched alkoxy group
containing the specified number of carbon atoms wherein any of the carbon atoms may
be substituted by one or more fluorine atoms.
As used herein, the term "cycloalkyl" refers to a non-aromatic hydrocarbon ring containing
the specified number of carbon atoms. For example, C^cycloalkyl means a non-aromatic
ring containing at least three, and at most seven, ring carbon atoms. Examples of
"cycloalkyl" as used herein include, but are not limited to, cyclopropyl, cyclobutyl,
cyclopentyl, cyclohexyl and cycloheptyl. A Ce^cycloalkyl group is preferred.
As used herein, the term "halogen" refers to the elements fluorine, chlorine, bromine and
iodine. Preferred halogens are fluorine, chlorine and bromine.
As used herein, the term "aryl" refers to a phenyl or a naphthyl ring.
As used herein, the term "heteroaryl" refers to a 5- or 6-membered heterocyclic aromatic
ring or a fused bicyclic heteroaromatic ring system.
As used herein, the term "heterocyclyi" refers to a 3- to 7-membered monocyclic saturated
ring containing at least one heteroatom independently selected from oxygen, nitrogen and
sulfur. Examples of suitable heterocyclic rings include, but are not limited to, piperidine
and morpholine.
As used herein, the term "5- or 6-membered heterocyclic aromatic ring" refers to a
monocyclic unsaturated ring containing at least one heteroatom independently selected
from oxygen, nitrogen and sulfur. Examples of suitable 5- and 6-membered heterocyclic
aromatic rings include, but are not limited to, furyl, thienyl, pyrrolyi, oxazolyl, thiazolyl,
imidazolyl, oxadiazolyl, thiadiazolyl, pyridyl, triazolyl, triazinyl, pyridazinyl, pyrazinyl,
pyrimidinyl, pyrazolyl, isothiazolyl and isoxazolyl.
As used herein, the term "fused bicyclic heteroaromatic ring system" refers to a ring
system comprising one six-membered unsaturated ring and one 5- or 6-membered
unsaturated or saturated ring fused together, the ring system containing at least one
heteroatom independently selected from oxygen, nitrogen and sulfur. Examples of
suitable fused bicyclic heteroaromatic ring systems include, but are not limited to, indolyl,
benzofuranyl, quinolyl and benzothienyl. Further examples include but are not limited to,
isoquinolyl, quinolizinyl, naphthyridinyl, quinoxalinyl, quinazolinyl, cinnolinyl, isoindolyl,
indolizinyl, indazolyl, pyrrolopyridinyl, benzimidazolyl, benzoxazolyl, benzisoxazolyl,
benzothiazolyl, benzisothiazolyl, benzoxadiazolyl, benzothiadiazolyl, dihydrobenzothienyi,
dihydrobenzofuranyl, benzodioxolanyl, methylenedioxyphenyl, dihydrobenzodioxinyl and
the like.
As used herein, the term "azacycloalkyl ring" refers to a 4- to 7-membered monocyclic
saturated ring containing one nitrogen atom. Examples of suitable azacycloalkyl rings are
azetidine, pyrrolidine, piperidine and azepine.
As used herein, the term "oxo-substituted azacycloalkyl ring" refers to an azacycloalkyl
ring as defined above substituted by one oxo group. Examples of suitable oxo-substituted
azacycloalkyl rings include, but are not limited to, azetidinone, pyrrolidinone, piperidinone
and azepinone.
When Z represents -{CH2)rX- wherein the -(CH2)r- group is attached to R3, examples of Z
include -O-, -CH2O-, -(CH2)2O-, -NR7-, -CH2NR7, -{CH2)2NR7-, -CH2-, -{CH2)2, -(CH2)3-, -
NH-, -CH2NH-, -{CH2)2NH, -CH2N(C^alkyl) and -{CH2)2N(C^alkyl).
When Z represents -X(CH2)r wherein X is attached to R3, examples of Z include -O-,
-OCH2, -0(CH2)2, -NR7-, -NR7CH2, -NR7(CH2)2, -CH2-, -(CH2)2. -{CH2)3-, -NH-, -NHCH2-, -
NH(CH2)2, -N(C^alkyl)-, -N(C^alkyl)CH2- and -N(C^alkyl)(CH2)2-.
As used herein, the term "substituted" refers to substitution with the named substituent or
substituents, multiple degrees of substitution being allowed unless otherwise stated.
As used herein, the term "solvate" refers to a complex of variable stoichiometry formed by
a solute (in this invention, a compound of formula (I) or a salt thereof) and a solvent.
Such solvents for the purpose of the invention may not interfere with the biological activity
of the solute. Examples of suitable solvents include water, methanol, ethanol and acetic
acid. Most preferably the solvent used is water and the solvate may also be referred to as
a hydrate.
It will be appreciated that for use in medicine the salts of formula (I) should be
physiologically (i.e. pharmaceutically) acceptable. Suitable physiologically acceptable
salts will be apparent to those skilled in the art and include for example acid addition salts
formed with inorganic acids e.g. hydrochloric, hydrobromic, sulfuric, nitric or phosphoric
acid; and organic acids e.g. succinic, maleic, malic, mandelic, acetic, fumaric, glutamic,
lactic, citric, tartaric, benzole, benzenesulfonic, p-toluenesulfonic, methanesulfonic or
naphthalenesulfonic acid. Other non-physiologically acceptable salts e.g. oxalates, may
be used, for example in the isolation of compounds of formula (I) and are included within
the scope of this invention. Also included within the scope of the invention are solvates
and hydrates of the compounds of formula (I).
Certain of the compounds of formula (I) may form acid addition salts with one or more
equivalents of the acid. The present invention includes within its scope all possible
stoichiometric and non-stoichiometric forms thereof.
Certain compounds of formula (I) may exist in stereoisomeric forms (e.g. they may contain
one or more asymmetric carbon atoms). The individual stereoisomers (enantiomers and
diastereomers) and mixtures of these are included within the scope of the present
invention. The present invention also covers the individual isomers of the compounds
represented by formula (I) as mixtures with isomers thereof in which one or more chiral
centres are inverted. Likewise, it is understood that compounds of formula (I) may exist in
tautomeric forms other than that shown in the formula and these are also included within
the scope of the present invention.
The groups R2, R3-Z- and R4 may be located on any position on their respective phenyl
rings.
When R2 represents optionally substituted aryl ring, optionally substituted heteroaryl ring
or optionally substituted heterocyclyl ring, the optional substituents may be independently
selected from C,^alkyl, Ci^alkoxy, halogen, trifluoromethyl, trifluoromethoxy, cyano, —Sd^
alkyl, -CONR5R6 and -NR5COR6, wherein R5 and R6 have any of the meanings given
hereinbefore.
When R3 represents optionally substituted aryl ring or optionally substituted heteroaryl
ring, the optional substituents may be independently selected from d^alkyl, C^alkoxy,
halogen, trifluoromethyl, trifluoromethoxy, cyano, -S-d-ealkyl, di(d-6alkyl)amino, d-
6alkanoyl and C
Preferably, R1 represents hydrogen or d~ialkyl. More preferably, R1 represents hydrogen,
methyl, ethyl, n-propyl or isopropyl. Even more preferably, R1 represents methyl.
Preferably, R2 represents hydrogen, halogen, Chalky!, d^alkoxy, d^alkylthio or did.
6alkylamino. More preferably, R2 represents hydrogen, halogen, d^alkyl, d-^alkoxy or
did-ealkylamino. Even more preferably, R2 represents methyl, methoxy, ethoxy,
dimethylamino or isopropoxy.
Equally preferably, R2 represents hydrogen, halogen, C^alkyl or d-ealkoxy. More
preferably, R2 represents hydrogen, halogen, CMalkyl or d^alkoxy. Even more
preferably, R2 represents hydrogen, methoxy or bromo.
Preferably, when R2 represents an optionally substituted aryl ring, an optionally
substituted heteroaryl ring, or an optionally substituted heterocyclyl ring, the optional
substituents are independently selected from chloro, fluoro, bromo, methyl, ethyl, t-butyl,
methoxy, trifluoromethyl, trifluoromethoxy, cyano, -S-methyl, -CONH2 and -NHCOMe.
Preferably, R3 represents phenyl, pyridyl (e.g. 2-, 4- or 5-pyridyl), isoxazolyl (e.g. isoxazol-
3-yl), thienyl (e.g. 2-thienyl), furyl (e.g. 2- or 3-furyl), thiazolyl (e.g. 2-thiazolyl),
benzofuranyl (e.g. 1-benzofuranyl, 2-benzofuranyl or 5-(2,3-dihydrobenzofuranyl),
benzothienyl (e.g. 2- or 3-benzothienyl), naphthyl (e.g. 2-naphthyl), benzodioxinyl (e.g.
2,3-dihydrobenzo[1,4]dioxin-6-yl or 2,3-dihydrobenzo[1,4]dioxin-2-yl) or benzodioxolanyl
(e.g. 1 ,4-benzodioxolanyl) or methylenedioxyphenyl (e.g. 3,4-methylenedioxyphenyl), all
of which may be optionally substituted. Most preferably, R3 represents phenyl or
optionally substituted phenyl.
Preferably, when R3 represents optionally substituted phenyl, the optional substituents are
independently selected from chloro (e.g. 4-chloro), fluoro (e.g. 4-fluoro), bromo, methyl,
ethyl, t-butyl, methoxy, trifluoromethyl, trifluoromethoxy, cyano and -S-methyl. More
preferably, the optional substituents are selected from chloro and fluoro.
Equally preferably when R3 represents optionally substituted phenyl, the optional
substituents are independently selected from chloro (e.g. 4-chloro, 2,4-, 3,4-, 2,6-
dichloro), fluoro (e.g. 3- or 4-fluoro, 2,3-, 2,4- or 3,4-difluoro), methyl (e.g. 4-metnyl),
methoxy (e.g. 2-, 3- or 4-methoxy, 3,4-dimethoxy or 3,4,5-trimethoxy), bromo (e.g. 4-
bromo), trifluoromethyl (e.g. 3- or 4-trifluoromethyl), i-propyl (e.g. 4-i-propyl), cyano (e.g.
5-cyano), dimethylamino (e.g. 3-dimethylamino), methoxymethylene (e.g. 4-
methoxymethylene), acetyl (e.g. 4-acetyl) or any combination thereof (e.g. 2-chloro-4-
fluoro).
Preferably when R3 represents optionally substituted pyridyl, the optional substituent is
methyl (e.g. 6-methyl).
Preferably when R3 represents optionally substituted isoxazolyl, the optional substituent is
methyl (e.g. 5-methyl).
Preferably when R3 represents optionally substituted thienyl, the optional substituents are
independently selected from methyl (e.g. 5-methyl) or chloro (e.g. 5-chloro).
Preferably when R3 represents optionally substituted furyl, the optional substituents are
independently selected from methyl (e.g. 5-methyl or 4,5-dimethyl), trifluoromethyl (e.g. 2-
trifluoromethyl or ethyl (e.g. 2-ethyl).
Preferably when R3 represents optionally substituted benzothienyl, the optional
substituents are independently selected from methyl (e.g. 3-methyl) or chloro (e.g. 5-
chloro).
When Z represents -(CH2)rX- or-X(CH2)r-, preferably X is -O- or -NR7-. More preferably,
X is -O- or -N(Me)-
When Z represents -(CH2)rX- or -X(CH2)r, preferably r is 0 or 1.
When Z represents ~(CH2)rO-, preferably r is 0 or 1.
More preferably, when Z represents - 1. Even more preferably, when Z is -(CH2)rX- or -X(CH2)r-, X is -O- or — N(Me)- and r is 0
or 1.
Preferably, Z represents -CH20-, -OCH2-, -NHCH2-, CH2NH-, -O- or -N(Me)-. More
preferably, Z represents -O- or -CH2O-. Even more preferably, Z represents -CH2O-.
Preferably, when r represents 0 or 1, R3 represents phenyl or optionally substituted
phenyl.
Preferably, when r represents 0 or 1 and R3 represents phenyl or optionally substituted
phenyl, the optional substituents on the phenyl ring are independently selected from
chloro, fluoro, bromo, methoxy, trifluoromethyl, trifluoromethoxy and cyano.
Preferably, R4 represents hydrogen, Chalky! or C^alkoxy. More preferably, R4
represents hydrogen, methyl or methoxy. Even more preferably, R4 represents hydrogen.
Preferably, R5 and R6 independently represent hydrogen or Chalky). More preferably, R5
and R6 independently represent hydrogen or methyl.
Preferably, R7 represents hydrogen or Chalky!. More preferably, R7 represents
hydrogen.
Preferably, p represents 0.
In a first embodiment of the invention, the R2 group is located at the para-position relative
to the group B i.e. a compound of formula (IA)
(IA)
^-^ n
o o
or a pharmaceutically acceptable salt or solvate thereof wherein groups A, B, Z and R1 to
R4 have any of the meanings as given hereinbefore.
When R2 is located in the para-position i.e. compounds of formula (IA), R2 is preferably
hydrogen, methoxy, ethoxy, isopropoxy or dimethylamino.
In another embodiment of the invention, Z is located at the meta-position relative to the
sulfone group i.e. a compound of formula (IB)
(IB)
--^' D
O' "O
or a pharmaceutically acceptable salt or solvate thereof wherein groups A, B, Z and R1 to
R4 have any of the meanings as given hereinbefore.
When the R3-Z- group is located in the meta-position i.e. compounds of formula (IB), and
Z represents -(CH2)fX- or -X(CH2)r, r is preferably 0 or 1 and R3 Is preferably phenyl or
optionally substituted phenyl. When the R3-Z group is located in the meta-position, and Z
represents -{CH2)rX- or -X(CH2)r-, r is 0 or 1 and R3 is phenyl or optionally substituted
phenyl, the optional substituents on the phenyl ring are preferably independently selected
from chloro or fluoro.
When R3-(CH2)rO- is located in the meta-position and Z is -(CH2)rO-, r is preferably 0 or 1
and R3 is preferably phenyl or optionally substituted phenyl. When R3-(CH2),0- is located
in the meta-position, r is 0 or 1 and R3 is phenyl or optionally substituted phenyl, the
optional substituents on the phenyl ring are preferably independently selected from chloro
or fluoro.
In another embodiment of the invention, the R3-Z- group is located at the para-position
relative to the sulfone group i.e. a compound of formula (1C)
B
or a pharmaceutically acceptable salt or solvate thereof wherein groups A, B, Z and R1 to
R4 have any of the meanings as given hereinbefore.
When the R3-Z- group is located in the para-position i.e. compounds of formula (1C), and Z
represents -{CH2)rX- or -X(CH2)r-, r is preferably 0 or 1 and R3 is preferably phenyl or
optionally substituted phenyl. When the R3-Z- group is located in the para^position, and Z
represents -{ChyrX- or -X(CH2)r-, r is preferably 0 or 1 and R3 is preferably phenyl or
optionally substituted phenyl, the optional substituents on the phenyl ring are preferably
chloro or fluoro.
When R3-(CH2),O- is located in the para-position and Z is -(CH2)rO-, r is preferably 0 or 1
and R3 is preferably phenyl or optionally substituted phenyl. When R3-(CH2)fO- is located
in the meta-position, r is 0 or 1 and R3 is phenyl or optionally substituted phenyl, the
optional substituents on the phenyl ring are preferably independently selected from chloro
or fluoro.
In another embodiment of the invention, the R3-Z- group is located at the meta-position
relative to the sulfone group and the R2 group is located at the para-position relative to the
group B i.e. a compound of formula (ID)
or a pharmaceutically acceptable salt or solvate thereof wherein groups A, B, Z and R1 to
R4 have any of the meanings as given hereinbefore.
In another embodiment of the invention, the R3-Z- group is located at the para-position
relative to the sulfone group and the R2 group is located at the para-position relative to the
group B i.e. a compound of formula (IE)
or a pharmaceutically acceptable salt or solvate thereof wherein groups A, B, Z and R1 to
R4 have any of the meanings as given hereinbefore.
In another embodiment of the invention, m is 1 and n is 1 and the invention is a compound
of formula (IF):

or a pharmaceutically acceptable salt or solvate thereof wherein groups Z and R1 to R4
have any of the meanings as given hereinbefore.
In another embodiment of the invention, m is 2 and n is 1 and the invention is a compound
of formula (IG):
(IG)
or a pharmaceutically acceptable salt or solvate thereof wherein groups Z and R1 to R4
have any of the meanings as given hereinbefore.
or a pharmaceutically acceptable salt or solvate thereof wherein groups Z and R1 to R4
have any of the meanings as given hereinbefore.
In a preferred embodiment of the invention, for any of the compounds of the formulae (ID),
(IE), (IF), (IG), (IH), (|J), (IK), and (IL), Z is -(CH2)rO-.
In another embodiment of the invention, Z is -(CH2)rX- wherein X is oxygen and there is
provided a compound of formula (IM):
R-(CH2),

wherein
A and B represent the groups -(CH2)m- and -(CH2)n- respectively;
R1 represents hydrogen or Chalky!;
R2 represents hydrogen, halogen, hydroxy, cyano, nitro, hydroxyC^alkyl, trifluoromethyl,
trifluoromethoxy, Chalky!, C^alkoxy, -(CH2)pCMcycloalkyl, -(CH2)pOCMcycloalkyl, -
COC^alkyl, -SO2C,^alkyl, -SOC^alkyl, -S-C^alkyl, -COzC^alkyl, -C02NR5R6, -
SO2NR5R6, -(CH2)PNRSR6, -(CH2)PNR5COR6, optionally substituted aryl ring,, optionally
substituted heteroaryl ring or optionally substituted heterocyclyl ring;
R3 represents optionally substituted aryl ring or optionally substituted heteroaryl ring;
R4 represents hydrogen, hydroxy, Chalky!, C^alkoxy, trifluoromethyl, trifluoromethoxy,
halogen, -OS02CF3, -(CH2)pCMcycloalkyl, -(CH2)qOC1-6alkyl or -(CH2)pOC3-6cycloaikyl;
R5 and R6 each independently represent hydrogen, C^alkyl or, together with the nitrogen
or other atoms to which they are attached, form an azacycloalkyl ring or an oxosubstituted
azacycloalkyl ring;
m and n independently represent an integer selected from 1 and 2;
p independently represents an integer selected from 0, 1, 2 and 3;
q independently represents an integer selected from 1, 2 and 3;
r independently represents an integer selected from 0, 1, and 2;
or a pharmaceutically acceptable salt or solvate thereof.
In another embodiment of the invention, the R2 group is located at the meta-position
relative to the group B and the invention is a compound of formula (IN):

wherein groups Z, A, B and R1 to R4 have any of the meanings as given hereinbefore.
In another embodiment of the invention, there is provided a compound of formula (IP):
wherein
A and B represent the groups ~{CH2)m- and -{CH2)n- respectively;
R1 represents hydrogen or Chalky!;
R2 represents hydrogen, halogen, hydroxy, cyano, nitro, hydroxyC^alkyl, trifluoromethyl,
trifluoromethoxy. Chalky!, C^alkoxy, -(CH2)pCMcycloalkyl, -(CH^pOC^cycloalkyl, -
COC14alkyl. -SO2d-«alkyl, -SOC^alkyl. -S-C^alkyl, -CO2C,^alkyl, -CO2NR5R6, -
SO2NR5R6, -(CH2)pNR5Ra, -(CH2)PNR5COR8, optionally substituted aryl ring, optionally
substituted heteroaryl ring or optionally substituted heterocydyl ring;
R3 represents optionally substituted aryl ring or optionally substituted heteroaryl ring;
R" represents hydrogen, hydroxy, d-ealkyl, d-ealkoxy, trifluoromethyl, trifluoromethoxy,
halogen, -OSO2CF3, -(CH2)pCMcycloalkyl, -(CH2)qOd-6alkyl or-(CH2)pOCMcycloalkyl;
R5 and R6 each independently represent hydrogen, d^alkyl or, together with the nitrogen
or other atoms to which they are attached, form an azaqycloalkyl ring or an oxosubstituted
azacycloalkyl ring;
Z represents -(CH2)rX- wherein the -(CH2)- group is attached to R3, or -X(CH2)r wherein
X is attached to R3, and wherein any of the -CH2- groups may be optionally substituted by
one or more d^alkyl groups;
X represents oxygen, -NR7 or -CH2- wherein the -CH2- group may be optionally
substituted by one or more Chalky! groups;
R7 represents hydrogen or d-ealkyl;
m and n independently represent an integer selected from 1 and 2;
p independently represents an integer selected from 0, 1, 2 and 3;
q independently represents an integer selected from 1, 2 and 3;
r independently represents an integer selected from 0, 1, and 2;
or a pharmaceutically acceptable salt or solvate thereof.
Particular compounds according to the invention include those incorporated in Tables 1 to
7 and those specifically exemplified and named hereinafter including, without limitation:-
7-Methoxy-8-(3-phenoxy-benzenesulfonyl)-2,3,4,5-tetrahydro-1H-3-benzazepine;
7-Methoxy-3-methyl-8-(3-phenoxy-benzenesulfonyl)-2,3,4,5-tetrahydro-1H-3-
benzazepine;
7-(3-Benzyloxyphenyisulfonyl)-2,3,4,5-tetrahydro-3-benzazepine;
12
7-[4-{4-Chloro-benzyloxy)-benzenesulfonyl]-8-methoxy-3-methyl-2,3,4,5-tetrahydro-1H-3-
benzazepine;
(4-F(uoro-benzyl)-[4-(8-methoxy-3-methyl-2,3,4,5-tetrahydro-1/-/-3-benzazepine-7-
sulfonyl)-phenyl]-amine;
[4-(8-Methoxy-3-methyl-2,3,4,5-tetrahydro-1H-3-benzazepine-7-sulfonyl)-phenyl]-phenylamine;
7-[4-(4-Chloro-phenoxymethyl)-benzenesulfonyl]-8-methoxy-3-methyl-2,3,4,5-{etrahydro-
1H-3-benzazepine;
4-Chloro-pheny)-[4-(8-methoxy-3-methyl-2,3,4,5-tetrahydro-1H-3-benzazepine-7-
sulfonyl)-benzyl]-amine;
7-[4-(4-Fluorobenzyl)benzenesulfonyl]-8-methoxy-3-methyl-2,3,4,5-tetrahydro-1W-3-
benzazepine;
7-[4-(3-FIuoro-benzyloxy)-benzenesulfonyl]-6-methoxy-1,2,3l4-tetrahydro-isoquinoline,
and
5-Methoxy-2-methyl-6-[4-(3-trifIuoromethyl-benzyloxy)-benzenesulfonyl]-2,3-dihydro-1 Hisoindole;
(2-Methoxy-benzyl)-[4-(8-rnethoxy-3-methyl-2,3,4,5-tetrahydro-1H-3-benzazepine-7-
sulfonyl)-phenyl]-amine;
7-[4-(4-Chloro-phenoxymethyl)-benzenesulfonyl]-8-ethoxy-3-methyl-2,3,4,5-tetrahydro-
1 H-3-benzazepine;
[4-{8-Ethoxy-3-methyl-2,3.4>5-tetrahydro-1H-3-benzazepine-7-sulfonyi)-benzyl]-(2-
methoxy-phenyl)-amine;
{8-[4-(4-Fluoro-phenoxymethyl)-benzenesulfonyl]-3-methyl-2,3l4,5-tetrahydro-1H-3-
benzazepin-7-yl}-dimethyl-amine;
6-Ethoxy-7-[4-(4-fluoro-benzyloxy)-benzenesuifonyl]-1,2,3,4-tetrahydro-isoquinoline
hydrochloride;
(3-Methoxy-benzyl)-[4-(6-methoxy-1,2,3,4-tetrahydro-isoquinoline-7-suifonyl)-phenyl]-
methyl-amine hydrochloride;
7-[4-(4-Chlorophenoxymethyl)benzenesulfonyl]-6-methoxy-1,2,3,4-tetrahydroisoquinoline
hydrochloride salt; and
3-Methyl-7-{(4-(2-methoxybenzyloxy)-phenylsulfonyl}-9-phenyl-1,2,4,5-tetrahydro-3-
benzazepine.
The compounds of the present invention may be in the form of their free base or
physiologically acceptable salts thereof, particularly the monohydrochloride or
monomesylate salts or pharmaceutically acceptable derivatives thereof.
The present invention also provides a general process (A) for preparing compounds of
formula (I) which process comprises:
reacting a compound of formula (II)
with a compound of formula (III)
(III)
wherein L is a leaving group, such as fluoro, chloro, alkoxy or aryloxy, M is a metal, such
as lithium or magnesium, and R1'-R4' represent R1 to R4 as hereinbefore defined or are
groups that may be readily convertible to R1 to R4, and Z, A and B are as hereinbefore
defined.
This general method (A) can be conveniently performed by mixing the two components at
preferably -70°C to room temperature in a suitable solvent such as tetrahydrofuran or
ether for 10 minutes to 18 hours. Removal of certain R1 protecting groups e.g.
trifluoroacetyl, can also take place simultaneously during this process.
The present invention also provides a general process (B) for preparing compounds of
formula (I), which process comprises:
reacting a compound of formula (IV)
O O
with a compound of formula (V)
-{CH2)f—Y (V)
wherein W is OH or NHR7, and Y is a leaving group, such as bromo, iodo, chloro, fluoro,
hydroxy, mesylate or triflate;
or Y is OH, NHR7, CHO, MgBr or ZnCI and W is a leaving group, such as fluoro, chloro,
bromo or triflate and r. A, B and R7 are as hereinbefore defined and R1'-R4 represent R1 to
R4 as hereinbefore defined or are groups that may be readily convertible to R1 to R4.
Examples of general process (B) include:
a) W is OH , Y is Br and r is 1
which can be conveniently performed by heating the two reactants in an inert solvent e.g.
dimethylformamide or dimethylsulfoxide, under basic conditions e.g. potassium carbonate
or sodium hydride, optionally at elevated temperature e.g. 100°C.
b) W is OH, Y is OH and r is 1
which can be conveniently carried out using Mitsunobu conditions in the presence of
triphenylphosphine and diisopropyl azodicarboxylate in tetrahydrofuran at room
temperature.
c) W is NHR7, Y is CHO and r is 0
which can be conveniently carried out using reductive alkylation conditions e.g. sodium
triacetoxyborohydride in dichloroethane at room temperature.
d) W is F, Y is OH and r is 1
which can be conveniently carried out under basic conditions e.g. in the presence of
sodium hydride in dimethylsulfoxide, optionally at elevated temperature.
e) W is F, Y is OH and r is 0
which can be conveniently carried out under basic conditions e.g. in the presence of
sodium hydride in dimethylsulfoxide, optionally at elevated temperature.
f) W is F. Y is NHR; and r is 1
which can be conveniently carried out by heating the reactants in an inert solvent e.g.
dimethylsulfoxide at elevated temperature.
g)WisF, Y is NHR7 and r is 0
which can be conveniently carried out under basic conditions e.g. in the presence of
sodium hydride or lithium hexamethyldisilazide in an inert solvent, at room temperature.
h) W is Br, Y is ZnCI and r is 1
which can be conveniently out in an inert solvent e.g. tetrahydrofuran in the presence
palladium tetrakis(triphenylphosphine) optionally at elevated temperature e.g. 60°C.
i) W is NHR7, Y is Br and r is 0
which can be conveniently carried out in an inert solvent using palladium catalysed
conditions as published by Buchwald (J. Org. Chem. 1997, 1264).
j) W is OTf, Y is NHR7 and r is 0
which can be conveniently carried out in an inert solvent using palladium catalysed
conditions as published by Buchwald (J. Org. Chem. 1997, 1264).
In another embodiment of the invention, m is 1 and n is 2 and the invention is a compound
or a pharmaceutically acceptable salt or solvate thereof wherein groups Z and R1 to R4
have any of the meanings as given hereinbefore.
In another embodiment of the invention, m is 2 and n is 2 and the invention is a compound
of formula (IJ):

or a pharmaceutically acceptable salt or solvate thereof wherein groups Z and R1 to R4
have any of the meanings as given hereinbefore.
In another embodiment of the invention, m is 2 and n is 2, the R2 group is located at the
para-position relative to the group B, the R3-Z- group is located at the meta-position
relative to the sulfone group and the invention is a compound of formula (IK):
or a pharmaceutically acceptable salt or solvate thereof wherein groups Z and R1 to R4
have any of the meanings as given hereinbefore.
In another embodiment of the invention, rn is 2 and n is 2, the R2 group is located at the
para-position relative to the group B, the R3-Z- group is located at the para-position
relative to the sulfone group and the invention is a compound of formula (IL):
k) W is NHR7, Y is Brandrisl
which can be conveniently performed by heating the 2 reactants in an inert solvent e.g.
dimethylfonnamide or dimethylsulfoxide, under basic conditions e.g. potassium carbonate
or sodium hydride, optionally at elevated temperature e.g. 100°C.
The present invention also provides a general process (C) for preparing compounds of
formula (I), which process comprises:
reacting a compound of formula (VI)
with a compound of formula (VII)
RJ (VII)
wherein W is OH, NHR7 or CHO and Y is a leaving group, such as bromo, iodo, chloro,
fluoro, hydroxy, mesylate or Inflate, or Y is OH or NHR7 and r, A, B and R7 are as
hereinbefore defined and R1 -R4 represent R1 to R4 as hereinbefore defined or are groups
that may be readily convertible to R1 to R4.
Examples of general process (C) include:
a) W is OH, r is 1 and Y is OH
which can be conveniently carried out using Mitsunobu conditions in the presence of
triphenylphosphine and diisopropyl azodicarboxylate in tetrahydrofuran at room
temperature.
b) W is OH, r is 1 and Y is F
which can be conveniently carried out using standard aromatic nucleophilic substitution
conditions e.g. in an inert solvent in the presence of base such as sodium hydride
c) W is CHO. r is 0 and Y is NHR7
which can be conveniently carried out using reductive alkylation conditions e.g. sodium
triacetoxyborohydride in dichloroethane at room temperature
d) W is Br. r is 1 and Y is OH
which can be conveniently performed by heating the two reactants in an inert solvent e.g.
dimethylformamide or dimethylsulfoxide, under basic conditions e.g. potassium carbonate
or sodium hydride, optionally at elevated temperature e.g. 100°C.
e) W is Br, r is 1 and Y is NHR7
which can be conveniently performed by heating the two reactants in an inert solvent e.g.
dimethylformamide or dimethylsulfoxide, under basic conditions e.g. potassium carbonate
or sodium hydride, optionally at elevated temperature e.g. 100°C.
The present invention also provides a general process (D) for preparing compounds of
formula (I) which process comprises:
reacting a compound of formula (VIII)
with a compound of formula (IX)
wherein L is a leaving group, such as fluoro, chloro, alkoxy or aryloxy, M is a metal, such
as lithium or magnesium, or M is hydrogen, Z, A and B are as hereinbefore defined and
R1'-R4' represent R1 to R4 as hereinbefore defined or are groups that may be readily
convertible to R1 to R4. This general method (D) can be conveniently performed by mixing
the two components at preferably -70°C to room temperature in a suitable solvent such as
tetrahydrofuran or ether for 10 minutes to 18 hours. Alternatively, where M is H, this
general method can be conveniently performed by treating (VIII) and (IX) with a Lewis
acid under Friedel-Crafts conditions at elevated temperature in a suitable solvent.
The present invention also provides a general process (E) for preparing compounds of
rormula (I) which process comprises:
•eacting a compound of formula (X)
with a compound of formula (XI)
(XI)
wherein L is a leaving group, such as halogen (e.g. fluoro or bromo or iodo) or triflate, j is
0, 1 or 2, and Z, A and B are as hereinbefore defined and R1 -R4 represent R1 to R4 as
hereinbefore defined or are groups that may be readily convertible to R1 to R4. This
general method (E) can be conveniently performed by mixing the two components in a
suitable solvent such as dimethylformamide, in the presence of base e.g. sodium hydride,
in the presence of copper iodide at elevated temperature e.g. 120°C or palladium
catalysed cross coupling as described in Tetrahedron 2001, 3069, and where necessary
oxidising, the intermediate sulfide or sulfoxide.
The present invention also provides a general process (F) for preparing compounds of
.formula (I) which process comprises:
reacting a compound of formula (XII)
with a compound of formula (XIII)
wherein L is a leaving group, such as halogen e.g. ( bromo or iodo) or triflate, j is 0, 1 or 2,
and 2, A and B are as hereinbefore defined and Rr-R4' represent R1 to R4 as hereinbefore
defined or are groups that may be readily convertible to R1 to R4. This general method (F)
can be conveniently performed by palladium catalysed cross coupling as described in
18
Tetrahedron 2001, 3069, and where necessary oxidising, the intermediate sulfide or
sulfoxide.
Interconversion of one of the R1 to R5 groups to the corresponding R1 to R4 groups
typically arises when one compound of formula (I) is used as the immediate precursor of
another compound of formula (I), or when it is easier to introduce a more complex or
reactive substituent at the end of a synthetic sequence.
For example, conversion of R1 from a t-butoxycarbonyl (BOC) group to hydrogen is
conducted by the treatment of the N-BOC protected compound with hydrogen chloride in
ethanoi or dioxan at room temperature.
Conversion of R1 from hydrogen to an alkyl group is conducted by the treatment of the
NH compound with the appropriate aldehyde in dichloroethane in the presence of a
reducing agent, such as sodium triacetoxyborohydride, or by the treatment of the NH
compound with the appropriate alkyl halide, such as iodomethane, under standard
alkylation conditions (potassium carbonate in DMF at 60°C).
Compounds of formula (II) are known in the literature or may be prepared by known
processes, for example, chlorosulfonation of the aromatic ring using chlorosulfonic acid.
Conversion to the sulfonyl fluoride can be achieved, if required, by reaction with
potassium fluoride in acetonitrile at room temperature. Suitable examples of an R1'
protecting group are trifluoroacetyl or the t-butoxycarbonyl (BOC) group.
Compounds of formula (III) are commercially available or may be prepared by established
procedures, for example lithiation of the corresponding bromobenzene in tetrahydrofuran
at low temperature, with for example t-butyl lithium or formation of the Grignard reagent
from the appropriate bromobenzene.
Compounds of formula (IV) may be prepared using a similar process to general process
A, using a suitably functionalised Grignard or organolithium reagent, where necessary
utilising protection or interconversion of the functional group W. For example, compounds
of formula (IV) in which W is 4-NH2 can be prepared from the corresponding 4-fluoro
analogue by displacement with the anion of trifluoroacetamide followed by hydrolysis, or
alternatively by hydrolysis of a protected amine function e.g. bis(trimethylsilyl)N.
Compounds of formula (IV) in which W is OH can be prepared by hydrolysis of the
corresponding t-butyldimethylsilyl ether.
Compounds of formula (V) are commercially available or readily prepared from
commercially available starting materials.
19
Compounds of formula (VI) may be prepared using a similar process to general process
A, using a suitably functionalised Grignard or organolithium reagent, where necessary
utilising protection or interconversion of the functional group W. For example, compounds
of formula (VI) in which W is CHO and r is 0 can be prepared by hydrolysis of the
corresponding diethyl acetal. Compounds of formula (VI) in which r is 1 and W is OH can
be prepared by NaBH4 reduction of the corresponding aldehyde. Compounds of formula
(V!) in which r is 1 and W is Br can be prepared from the corresponding alcohol by
treatment with CBr4 and triphenylphosphine.
Compounds of formula (VII) are commercially available or readily prepared from
commercially available starting materials.
Compounds of formula (VIII) can be prepared by halogenation (e.g. iodination or
bromination) of compounds of formula (VIII) where M is H, followed by formation of the
lithium or Grignard reagent.
Compounds of formula (IX) may be prepared by chlorosulfonylation of the aromatic ring,
or by oxidation of the corresponding thiol or disulfide. Conversion to the sulfonyl fluoride
can be achieved, if required, by reaction with potassium fluoride in acetonitrile at room
temperature.
Compounds of formula (X) may be prepared by reduction of compounds of formula (II)
using for example lithium aluminium hydride in tetrahydrofuran to give the thiol, or using
sodium bisulphite and sodium bicarbonate in tetrahydrofuran/water to give the sulfinic
acid.
Compounds of formula (XI) are commercially available or readily prepared from
commercially available starting materials.
Compounds of formula (XII) can be prepared by halogenation (e.g. iodination or
bromination) of compounds of formula (XII) where L is H, or conversion of L is OH to
triflate using standard methodology.
Compounds of formula (XIII) may be prepared by reduction of compounds of formula (IX)
using for example lithium aluminium hydride in tetrahydrofuran to give the thiol, or using
sodium bisulphite and sodium bicarbonate in tetrahydrofuran/water to give the sulfinic
acid.
Compounds of formula (I) have antagonist affinity for the serotonin 5-HT2C. 5-HT2A and
5-HTg receptors. These properties may give rise to anti-psychotic activity (e.g. improved
effects on cognitive dysfunction) activity with reduced extrapyramidal side effects (eps),
and/or anxiolytic/antidepressant activity. These could include, but are not limited to,
attenuation of cogniiive symptoms via 5-HT6 receptor blockade (see Reavill, C. and
Rogers, D.C., 2001, Investigational Drugs 2, 104-109), and reduced anxiety (see for
example Kennett et al., Neuropharmacology 1997 Apr-May; 36 (4-5): 609-20), protection
against EPS (Reavill et al., Brit. J. Pharmacol., 1999; 126: 572-574) and antidepressant
activity (Bristow et al., Neuropharmacology 39:2000; 1222-1236) via 5-HT2C receptor
blockade.
Certain compounds of formula (I) have also been found to exhibit affinity for dopamine
receptors, in particular the 03 and D£ receptors, and are useful in the treatment of
disease states which require modulation of such receptors, such as psychotic conditions.
Many of the compounds of formula (I) have also been found to have greater affinity for
dopamine 03 than for D2 receptors. The therapeutic effect of currently available
antipsychotic agents (neuroleptics) is generally believed to be exerted via blockade of D£
receptors; however this mechanism is also thought to be responsible for undesirable eps
associated with many neuroleptic agents. Without wishing to be bound by theory, it has
been suggested that blockade of the dopamine 03 receptor may give rise to beneficial
antipsychotic activity without significant eps (see for example Sokoloff et al, Nature, 1990;
347: 146-151; and Schwartz eta!, Clinical Neuropharmacology, Vol 16, No. 4, 295-314,
1993).
Compounds of formula (I) may also exhibit affinity for other receptors not mentioned
above, resulting in beneficial antipyschotic activity.
The compounds of formula (I) are of use as antipsychotic agents for example in the
treatment of schizophrenia, schizo-affective disorders, schizophreniform diseases,
psychotic depression, mania, acute mania, paranoid and delusional disorders.
Furthermore, they may have utility as adjunct therapy in Parkinsons Disease, particularly
with compounds such as L-DOPA and possibly dopaminergic agonists, to reduce the side
effects experienced with these treatments on long term use (e.g. see Schwartz et al.,
Brain Res. Reviews, 1998, 26, 236-242). From the localisation of 03 receptors, it could
also be envisaged that the compounds could also have utility for the treatment of
substance abuse where it has been suggested that D3 receptors are involved (e.g. see
Levant, 1997, Pharmacol. Rev., 49, 231-252). Examples of such substance abuse include
alcohol, cocaine, heroin and nicotine abuse. Other conditions which may be treated by
the compounds include dyskinetic disorders such as Parkinson's disease, neurolepticinduced
parkinsonism and tardive dyskinesias; depression; anxiety; agitation; tension;
social or emotional withdrawal in psychotic patients; cognitive impairment including
memory disorders such as Alzheimer's disease; psychotic states associated with
neurodegenerative disorders, e.g. Alzheimer's disease; eating disorders; obesity; sexual
dysfunction; sleep disorders; emesis; movement disorders; obsessive-compulsive
disorders; amnesia; aggression; autism; vertigo; dementia; circadian rhythm disorders;
convulsions; epilepsy; and gastric motility disorders e.g. IBS.
Therefore, the invention provides a compound of formula (I) as hereinbefore described or
a pharmaceutically acceptable salt or solvate thereof for use in therapy.
The invention also provides a compound of formula (I) or a pharmaceutically acceptable
salt or solvate thereof for use in the treatment of a condition which requires modulation of
a dopamine receptor.
The invention also provides a compound of formula (I) as hereinbefore described or a
pharmaceutically acceptable salt or solvate thereof for use in the treatment of psychotic
disorders, schizophrenia, Parkinsons disease, substance abuse, dyskinetic disorders,
depression, bipolar disorder, anxiety, cognitive impairment, eating disorders, obesity,
sexual dysfunction, sleep disorders, emesis, movement disorders, obsessive-compulsive
disorders, amnesia, aggression, autism, vertigo, dementia, circadian rhythm disorders and
gastric motility disorders.
The invention also provides the use of a compound of formula (I) as hereinbefore
described or a pharmaceutically acceptable salt or solvate thereof in the manufacture of a
medicament for the treatment of a condition which requires modulation of a dopamine
receptor.
The invention also provides the use of a compound of formula (I) as hereinbefore
described or a pharmaceutically acceptable salt or solvate thereof in the manufacture of a
medicament for the treatment of psychotic disorders, schizophrenia, Parkinsons disease,
substance abuse, dyskinetic disorders, depression, bipolar disorder, anxiety, cognitive
impairment, eating disorders, obesity, sexual dysfunction, sleep disorders, emesis,
movement disorders, obsessive-compulsive disorders, amnesia, aggression, autism,
vertigo, dementia, circadian rhythm disorders and gastric motility disorders.
The invention also provides a method of treating a condition which requires modulation of
a dopamine receptor, which comprises administering to a mammal in need thereof an
effective amount of a compound of formula (I) as hereinbefore described or a
pharmaceutically acceptable salt or solvate thereof.
The invention also provides a method of treating psychotic disorders, schizophrenia,
Parkinsons disease, substance abuse, dyskinetic disorders, depression, bipolar disorder,
anxiety, cognitive impairment, eating disorders, obesity, sexual dysfunction, sleep
disorders, emesis, movement disorders, obsessive-compulsive disorders, amnesia,
aggression, autism, vertigo, dementia, circadian rhythm disorders and gastric motility
disorders which comprises administering to a mammal in need thereof an effective
amount of a compound of formula (I) as hereinbefore described or a pharmaceutically
acceptable salt or solvate thereof.
A preferred use for dopamine antagonists according to the present invention is in the
treatment of psychotic disorders, schizophrenia, Parkinsons disease, substance abuse,
dyskinetic disorders, depression, bipolar disorder, anxiety and cognitive impairment.
"Treatment" includes prophylaxis, where this is appropriate for the relevant condition(s).
It will be appreciated by those skilled in the art that the compounds according to the
invention may advantageously be used in conjunction with one or more other therapeutic
agents, for instance, different antidepressant agents such as 5HT3 antagonists, serotonin
agonists, NK-1 antagonists, selective serotonin reuptake inhibitors (SSRI), noradrenaline
re-uptake inhibitors (SNRI), tricyclic antidepressants, dopaminergic antidepressants, H3
antagonists, 5HT1A antagonists, 5HT1B antagonists, 5HT1D antagonists, DI agonists, M,
agonists and/or anticonvulsant agents.
Suitable 5HT3 antagonists which may be used in combination of the compounds of the
inventions include for example ondansetron, granisetron, metoclopramide.
Suitable serotonin agonists which may be used in combination with the compounds of the
invention include sumatriptan, rauwolscine, yohimbine, metoclopramide.
Suitable SSRIs which may be used in combination with the compounds of the invention
include fluoxetine, citalopram, femoxetine, fluvoxamine, paroxetine, indalpine, sertraline,
zimeldine.
Suitable SNRIs which may be used in combination with the compounds of the invention
include venlafaxine and reboxetine.
Suitable tricyclic antidepressants which may be used in combination with a compound of
the invention include imipramine, amitriptiline, chlomipramine and nortriptiline.
Suitable dopaminergic antidepressants which may be used in combination with a
compound of the invention include bupropion and amineptine.
Suitable anticonvulsant agents which may be used in combination of the compounds of
the inventions include for example divalproex, carbamazepine and diazepam.
It will be appreciated that the compounds of the combination or composition may be
administered simultaneously (either in the same or different pharmaceutical formulations),
separately or sequentially.
For use in medicine, the compounds of the present invention are usually administered as
a standard pharmaceutical composition. The present invention therefore provides in a
further aspect a pharmaceutical composition comprising a compound of formula (I) as
hereinbefore described or a pharmaceutically (i.e. physiologically) acceptable salt thereof
and a pharmaceutically (i.e. physiologically) acceptable carrier. The pharmaceutical
composition can be for use in the treatment of any of the conditions described herein.
The compounds of formula (I) may be administered by any convenient method, for
example by oral, parenteral (e.g. intravenous), buccal, sublingual, nasal, rectal or
transdermal administration and the pharmaceutical compositions adapted accordingly.
The compounds of formula (I) as hereinbefore described and their pharmaceuticaily
acceptable salts which are active when given orally can be formulated as liquids or solids,
for example syrups, suspensions or emulsions, tablets, capsules and lozenges.
A liquid formulation will generally consist of a suspension or solution of the compound or
pharmaceutically acceptable salt in a suitable liquid cam'er(s) for example an aqueous
solvent such as water, ethanol or glycerine, or a non-aqueous solvent, such as
polyethylene glycol or an oil. The formulation may also contain a suspending agent,
preservative, flavouring or colouring agent.
A composition in the form of a tablet can be prepared using any suitable pharmaceutical
carrier(s) routinely used for preparing solid formulations. Examples of such carriers
include magnesium stearate, starch, lactose, sucrose and cellulose.
A composition in the form of a capsule can be prepared using routine encapsulation
procedures. For example, pellets containing the active ingredient can be prepared using
standard carriers and then filled into a hard gelatin capsule; alternatively, a dispersion or
suspension can be prepared using any suitable pharmaceutical carrier(s), for example
aqueous gums, celluloses, silicates or oils and the dispersion or suspension then filled
into a soft gelatin capsule.
Typical parenteral compositions consist of a solution or suspension of the compound or
pharmaceutically acceptable salt in a sterile aqueous carrier or parenterally acceptable oil,
for example polyethylene glycol, polyvinyl pyrrolidone, lecithin, arachis oil or sesame oil.
Alternatively, the solution can be lyophilised and then reconstituted with a suitable solvent
just prior to administration.
Compositions for nasal administration may conveniently be formulated as aerosols, drops,
gels and powders. Aerosol formulations typically comprise a solution or fine suspension
of the active substance in a pharmaceutically acceptable aqueous or non-aqueous solvent
and are usually presented in single or multidose quantities in sterile form in a sealed
container, which can take the form of a cartridge or refill for use with an atomising device.
Alternatively the sealed container may be a unitary dispensing device such as a single
dose nasal inhaler or an aerosol dispenser fitted with a metering valve which is intended
for disposal once the contents of the container have been exhausted. Where the dosage
form comprises an aerosol dispenser, it will contain a propellant which can be a
compressed gas such as compressed air or an organic propellant such as a fluorochlorohydrocarbon.
The aerosol dosage forms can also take the form of a pump-atomiser.
Compositions suitable for buccal or sublingual administration include tablets, lozenges
and pastilles, wherein the active ingredient is formulated with a carrier such as sugar and
acacia, tragacanth, or gelatin and glycerin.
Compositions for rectal administration are conveniently in the form of suppositories
containing a conventional suppository base such as cocoa butter.
Compositions suitable for transdermal administration include ointments, gels and patches.
Preferably the composition is in unit dose form such as a tablet, capsule or ampoule.
Each dosage unit for oral administration contains preferably from 1 to 250 mg (and for
parenteral administration contains preferably from 0.1 to 25 mg) of a compound of the
formula (I) or a pharmaceutically acceptable salt thereof calculated as the free base.
The pharmaceutically acceptable compounds of the invention will normally be
administered in a daily dosage regimen (for an adult patient) of, for example, an oral dose
of between 1 mg and 500 mg, preferably between 10 mg and 400 mg, e.g. between 10
and 250 mg or an intravenous, subcutaneous, or intramuscular dose of between 0.1 mg
and 100 mg, preferably between 0.1 mg and 50 mg, e.g. between 1 and 25 mg of the
compound of the formula (I) or a pharmaceutically acceptable salt thereof calculated as
the free base, the compound being administered 1 to 4 times per day. Suitably the
compounds will be administered for a period of continuous therapy, for example for a
week or more.
No toxicological effects are indicated/expected when a compound of the invention is
administered in the above mentioned dosage range.
Biological Test Methods
Binding experiments on cloned dopamine (e.g. D2 and D3) receptors
The ability of the compounds to bind selectively to human D2/D3 dopamine receptors can
be demonstrated by measuring their binding to cloned receptors. The inhibition
constants (Kj) of test compounds for displacement of [125l]-lodosulpride binding to human
D2/D3 receptors expressed in CHO cells were determined as follows. The cell lines were
shown to be free from bacterial, fungal and mycoplasmal contaminants, and stocks of
each were stored frozen in liquid nitrogen. Cultures were grown as monolayers or in
suspension in standard cell culture media. Cells were recovered by scraping (from
monolayers) or by centrifugation (from suspension cultures), and were washed two or
three times by suspension in phosphate buffered saline followed by collection by
centrifugation. Cell pellets were stored frozen at -80°C. Crude cell membranes were
prepared by homogenisation followed by high-speed centrifugation, and characterisation
of cloned receptors achieved by radioligand binding.
Preparation of CHO cell membranes: Cell pellets were gently thawed at room
temperature, and resuspended in about 20 volumes of ice-cold Extraction buffer; 5mM
EDTA, 50mM Trizma pre-set crystals (pH7.4@37°C), 1mM MgCl2, 5mM KCI and 120mM
NaCl. The suspension was homogenised using an Ultra-Turrax at full speed for 15
seconds. The homogenate was centrifuged at 18,000 r.p.m for 15 min at 4°C in a Sorvall
RC5C centrifuge. Supernatant was discarded, and homogenate re-suspended in
extraction buffer then centrifugation was repeated. The final pellet was resuspended in
50mM Trizma pre-set crystals (pH 7.4 @ 37°C) and stored in 1ml aliquot tubes at -80°C
(D2 = 3.0E+08 cells, D3 = 7.0E+07 cells and D4 = 1.0E+08 cells). The protein content
was determined using a BCA protocol and bovine serum albumin as a standard (Smith, P.
K., et al., Measurement of protein using bicinchoninic acid. Anal. Biochem. 150, 76-85
(1985)).
Binding experiments: Crude D2yD3 cell membranes were incubated with O.OSnM [125I]-
lodosulpride (-2000 Ci/mmol; Amersham, U. K., and the test compound in a buffer
containing 50mM Trizma pre-set crystals (pH 7.4 @ 37°C), 120mM NaCl, 5mM KCI, 2mM
CaCl2, 1mM MgCl2, 0.3% (w/v) bovine serum albumin. The total volume is 0.2ml and
incubated in a water bath at 37°C for 40 minutes. Following incubation, samples were
filtered onto GF/B Unifilters using a Canberra Packard Filtermate, and washed four times
with ice-cold 50mM Trizma pre-set crystals (pH 7.4 @ 37°C). The radioactivity on the
filters was measured using a Canberra Packard Topcount Scintillation counter. Nonspecific
binding was defined with 10jJvl SKF-102161 (YM-09151). For competition
curves, 10 serial log concentrations of competing cold drug were used (Dilution range:
10nM-10pM). Competition curves were analysed using Inflexion, an iterative curve fitting
programme in Excel. Results were expressed as pKj values where
pKj = -log10[Ki].
The exemplified compounds have pKj values within the range of 6.3 - 8.9 at the
dopamine D3 receptor.
The exemplified compounds have pKj values within the range of 5.6 - 8.5 at the
dopamine D2 receptor.
Binding experiments on cloned 5-HTfi receptors
Compounds can be tested following the procedures outlined in WO 98/27081.
The exemplified compounds have pKj values within the range of 7.2 - 10.0 at the
serotonin 5-HT6 receptor.
Binding experiments on cloned 5-HT?^ and 5-HTgr receptors
Compounds can be tested following the procedures outlined in WO 94/04533.
The exemplified compounds have pKj values within the range of 7.0 - 9.9 at the
serotonin 5-HT2c receptor and 7.5 - 9.9 at the serotonin S-HT^ receptor.
The invention is further illustrated by the following non-limiting examples:
Description 1
3-Trifluoroacetyl-2,3,4,5-tetrahydro-1H-3-benzazepine-7-sulfonyl fluoride (D1)
a) 3-Trifluoroacetyl-2,3,4,5-tetrahydro-1 W-3-benzazepine-7-sulfonyl chloride
A solution of 3-trifluoroacetyl-2,3,4,5-tetrahydro-1H-3-benzazepine (see WO02/40471)
(20 g, 80 mmol) in dichloromethane (50 mL) was added dropwise to a solution of
chlorosulfonic acid (33 mL, 240 mmol) in more dichloromethane (200 mL) at 0°C. The
resulting solution was stirred for 18 h without cooling then poured onto ice (250 g). The
resulting organic layer was washed with brine (100 mL), dried (MgSO4), and evaporated
to give the subtitle compound as a white solid (23 g).
b) 3-Trifluoroacetyl-2,3,4,5-tetrahydro-1H-3-benzazepine-7-sulfonyl fluoride
A mixture of 3-trifIuoroacetyl-2T3,4,5-tetrahydro-1H-3-benzazepine-7-sulfonyl chloride (23
g, 67 mmol), potassium fluoride (12 g, 200 mmol), 18-crown-6 (0.1 g), and acetonitrile
(100 mL) was stirred overnight. Water (200 mL) and ethyl acetate (200 mL) were added
and the organic layer was washed with brine (100 mL), dried (MgSO^), and evaporated to
give the title compound D1 as a white solid (21 g). 1H NMR 8 (ds-DMSO) 3.2 (4H, m), 3.7
(4H, m), 7.6 (1H, m), and 8.0 (2H, m).
Description 2
3-Trifluoroacetyl-8-methoxy-2,3,4,5-tetrahydro-1W-3-benzazepine-7-sulfonyl fluoride
(D2)
a) 3-TrifluoroacetyJ-8-methoxy-2,3,4,5"tetrahydro-1H-3-benzazepine
To a mixture of 7-methoxy-2,3,4,5-tetrahydro-1H-3-benzazepine hydrochloride (see EP
285287) (5.1 g, 25 mmol), triethylamine (8.4 mL, 60 mmol), and dichloromethane (100
mL) at 0°C, was added dropwise trifluoroacetic anhydride (3.5 mL, 26 mmol). The
solution was stirred for 2 h without cooling then washed with saturated aqueous sodium
hydrogen carbonate (100 mL), and water (100 mL), dried (MgSO4), and evaporated to
give the title compound as a white solid (5.5 g).
b) 3-Trifluoroacetyl-8-methoxy-2,3,4,5-tetrahydro-1W-3-benzazepine-7-sulfonyl
chloride
Prepared from 3-trifluoroacetyl-8-methoxy-2,3,4,5-tetrahydro-1H-3-benzazepine using the
method of Description 1(a),yield 85%.
c) 3-Trifluoroacetyl-8-methoxy-2,3,4,5-tetrahydro-1W-3-benzazepine-7-sulfonyl
fluoride
Prepared from 3-trifIuoroacetyl-8-methoxy-2,3,4,5-tetrahydro-1 H-3-benzazepine-7-sulfonyl
chloride using the method of Description 1(b), yield 80%.
'H NMR 6 (d6-DMSO) 3.1 (4H. m), 3.7 (4H, m), 4.0 (3H, s), 7.3 (1H, 2s, rotamers), and 7.8
(1H, 2s, rotamers).
Description 3
7-(3-Hydroxyphenylsulfonyl)-3-(t-butoxycarbonyl)-2,3,4,5-tetrahydro-1//-3-
benzazepine (03)
a) 7-(3-t-ButyldimethysiIyloxyphenylsulfonyl)-2,3,4,5-tetrahydro-1W-3-benzazepine
Prepared from 3-trifluoroacetyl-2.3,4,5-tetrahydro-1H-3-benzazepine-7-sulfonyl fluoride
and 3-t-butyldimethylsilyloxybromobenzene using the method of Example 1, yield 80%.
b) 7-{3-t-Butyldimethysiiyloxyphenylsulfonyl)-3-(t-butoxycarbonyl)-2,3,4,5-
tetrahydro-1 W-3-benzazepine
A solution of 7-(3-t-butyldimethysilyloxyphenylsulfonyl)-2,3,4,5-tetrahydro-1H-3-
benzazepine (5.0 g, 12 mmol) in dichloromethane (100 ml) was treated with di-t-butyl
dicarbonate (2.7 g, 12 mmol). After 30min the solution was evaporated, and
chromatography on silica, eluting with 10 to 50% ethyl acetate in hexane, gave the subtitle
compound (5.4 g).
c) 7-(3-Hydroxyphenylsulfonyl)-3-(t-butoxycarbonyl)-2,3,4,5-tetrahydro-1W-3-
benzazepine
7-(3-t-Butyldimethysilyloxyphenylsulfonyl)-3-(t-butoxycarbonyl)-2,3,4,5-tetrahydro-1H-3-
benzazepine (5.4 g, 10.5 mmol) was dissolved in a solution of tetra-n-butylammonium
fluoride in tetrahydrofuran (15 mL, 1M, 15 mmol). The solution was stirred for 1h then
diluted with ethyl acetate (100 ml) and washed with saturated aqueous sodium hydrogen
carbonate (100 ml), and brine (100 mL), dried (MgSCU), and evaporated.
Chromatography on silica, eluting with 0 to 10% methanol in dichloromethane containing
0.1M ammonia, gave the title compound D3 (3.5 g).
Description 4
8-Methoxy-3-methyl-2,3,4,5-tetrahydro-1/V-3-benzazepine-7-sulfonyl fluoride (D4)
a) 7-Methoxy-3-methyl-2,3,4,5-tetrahydro-1/-/-3-benzazepine
A mixture of 7-methoxy-2,3,4,5-tetrahydro-1H-3-benzazepine hydrochloride (see EP
285287) (25 g, 125 mmol) and 37% formalin (25 mL)in dichloroethane (250 mL) was
treated with sodium triacetoxyborohydride (30 g, 250 mmol) keeping the internal
temperature below 20°C. After stirring for 2 h, water was added and the pH adjusted to
10 using 50% sodium hydroxide solution. The organic layer was separated, dried over
sodium sulfate and evaporated to dryness to afford the product (23 g).
b) 8-Methoxy-3-methyl-2,3,4,5-tetrahydro-1 H-3-benzazepine-7-sulfonic acid
The product from part (a) (23 g) was dissolved in trifluoroacetic acid (125 mL), and then
stirred in an ice bath while chlorosulfonic acid (16.5 mL, 250 mmol) was added dropwise.
The solution was stirred for 30 min, then evaporated to dryness to afford the title sulfonic
acid which was used directly in the next step.
c) 8-Methoxy-3-methyl-2,3,4,5-tetrahydro-1 W-3-benzazepine-7-sulfonyl chloride
The sulfonic acid from part (b) was dissolved in thionyl chloride (75 mL) and the solution
refluxed for 30 min. After cooling, the solution was evaporated to dryness to afford the
title sulfonyl chloride which was used directly in the next step.
d) 8-Methoxy-3-mathyl-2,3,4,5-tetrahydro-1W-3-benzazepine-7-sulfonyl fluoride
The sulfonyl chloride from part (c) was dissolved in acetonitrile (500 mL) and potassium
fluoride (37 g, 625 mmol) and 18-crown-6 (1 crystal) added. The mixture was stirred for
18 h, then quenched with cold aqueous sodium bicarbonate solution until pH = 8. The
mixture was extracted twice with ethyl acetate, washed with bicarbonate solution then
brine, dried and evaporated to afford the sulfonyl fluoride D4 (25 g).
Description 5
7-{4-Fluoro-benzenesulfonyl)-8-methoxy-3-methyl-2,3,4,5-tetrahydro-1W-3-
benzazepine (D5)
The sulfony! fluoride D4 from Description 4 (25 g) was dissolved it dry tetrahydrofuran
(250 mL) and 4-fluorophenylmagnesium bromide in tetrahydrofuran (2.5 equivalents)
added over 15 min with ice bath cooling, an exotherm only apparent during the first part of
the addition. Stirred overnight without cooling then added over 10 min to a solution of
sodium potassium tartrate tetrahydrate (250 g) in water (450 ml) with stirring. Diethyl
ether was added (400 ml) and the organic layer separated, dried, evaporated, and
crystallised from diethyl ether to give crystalline fluorophenyl sulfone D5 17 g (51%).
Description 6
8-(4-Fluoro-benzenesulfonyl)-3-rnethyl-2,3,4,5-tetrahydro-1 W-3-benzazepin-7-ol
hydrobromide salt (D6)
I
O I I N—
H
A solution of D5 (300 mg, 0.86 mmol) in aqueous 48% HBr (10 ml) was heated at 120°C
overnight. The mixture was cooled to room temperature and the solvent removed,
azeotroping with toluene. Diethyl ether was added to the residue to yield the title
compound D6 as the hydrobromide salt (340 mg). MH+ 336. 1H NMR 5 (DMSO-da) 2.75
(3H, d), 2.88-3.25 (6H, m). 3.50-3.66 (2H, m). 7.35-7.50 (2H, t), 7.76 (1H, s), 7.90-8.03
(2H, m), 9.85 (1H, br.s), 10.80 (1H, br.s).
Description 7
1,1,1-Trifluoro-methanesulfonic acid 8-(4-fluoro-benzenesulfonyl)-3-methyl-2,3,4,5-
tetranydro-1 W-3-benzazepin-7-yl ester (D7)
To an ice bath cooled solution of D6 (340 mg, 0.82 mmol) in acetone (10 ml) was added
triethylamine (0.29 ml, 2.1 mmol) followed by trifluoromethanesulfonyl chloride (0.13 ml,

1.2 mmol). The mixture was stirred at room temperature for 2 hours. The solvent was
removed and the residue partitioned between dichloromethane and saturated sodium
bicarbonate. The organic layer was removed, dried (MgSO4) and evaporated to yield the
title compound D7 as a solid (270 mg). MH*468. 1H NMR 5 (CDCI3) 2.42 (3H, s), 2.55-
2.70 (4H, m). 2.95-3.15 (4H, m), 7.09 (1H, s), 7.15-7.24 (2H, t), 7.93-8.04 (3H, m).
Description 8
7-(4-FIuorO"benzenesulfonyl)"3,8-dimethyl-2,3,4,5-tetrahydro-1 H-3-
benzazepine (D8)
ff
A solution of D7 (100 mg, 0.21 mmol) in dry tetrahydrofuran (2 mL) was degassed with
argon for 10 minutes. To the solution Pd(PPh3)4 (30 mg) was added followed by
methylzinc chloride (0.22 mL, 0.43 mmol) then heated at reflux for 30 minutes. The
mixture was cooled to room temperature and quenched with water. Extraction with
dichloromethane followed by purification by SCX and chromatography on silica gave the
title compound D8 as a gum (56 mg). MH+ 334. 1H NMR 5 (CDCI3) 2.36 (3H, s), 2.38 (3H.
s), 2.47-2.66 (4H, m), 2.90-3.05 (4H, m), 6.96 (1H, s), 7.10-7.20 (2H, t), 7.83-7.92 (3H.
m).
Description 9
2,2,2-Trifluoro-N-[4-(8-methoxy-3-methyl-2,3,4,5-tetrahydro-1W-3-benzazepine-7-
sulfonyl)-phenyl]-acetamiden (D9)
2,2,2-trifluoroacetamide (9 eq., 51.6 mmol, 5.83 g) was dissolved in dry dimethylsulfoxide
(50 mL) and sodium hydride (1.01 eq., 52.1 mmol, 2.1 g) was slowly added at 0 °C; the
mixture was stirred at room temperature until no more bubbling was observed. The 4-
fluorosulfone D5 (2 g, 5.73 mmol), previously dissolved in dry dimethylsulfoxide (20 mL),
was added to the trifluoroacetamide mixture at room temperature; the resulting reaction
mixture was heated to 145 °C for 30 hours. The reaction mixture was then cooled to room
temperature and it was poured onto water (400 mL); the resulting aqueous mixture was
extracted with ethyl acetate (300 mL x 3). The organics were washed with water (300 mL
x 2) and brine (200 mL x 2), they were dried over Na2SO4, filtered and the solvent was
evaporated to afford the crude product D9, 3.5 g. MH* 444.
Description 10
4-{8-Methoxy-3-methyl-2,3,4,5-tetrahydro-1Ay-3-benzazepine-7-sulfonyl)-
phenylamine (D10)
The crude trifluoroacetamide intermediate D9 (3.5 g) was dissolved in methanol (25 mL)
and NaOH (2N solution) (28.5 mmol, 14.3 mL) was added at room temperature. The
reaction mixture was stirred at room temperature for 14 hours and it was afterwards
poured onto brine-water and the aqueous was extracted with ethyl acetate (200 mL x 3);
the organics were dried over Na2SO4, filtered and the solvent was evaporated to afford
2.6 g of crude product as a yellow solid. Chromatography on silica eluting with 0-10%
MeOH-NH3 - DCM afforded 1.3 g of the title compound (66 %), as a pale yellow solid D10.
MH* 347.
Description 11
^S-Methoxy-S-methyf^.S^.S-tetrahydro-IH-S-benzazepine-Z-sulfonyl)-
benzaldehyde (D11)
Magnesium turnings (1.4 g) in tetrahydrofuran (10 mL) were stirred under an atmosphere
of argon and treated with a solution of 4-bromobenzaldehyde diethyl acetal (15.5 g) in
tetrahydrofuran (60 ml) The mixture was stirred for 4 hours then the sulfonyl fluoride D4
(5.46 g) was added and the mixture was stirred for 60 hours. The mixture was poured
into a solution of potassium sodium tartrate in water and extracted with ethyl acetate. The
residue was purified by column Chromatography 0-10% methanol (containing 0.5%
aqueous ammonia)-dichloromethane. The product was treated with hydrochloric acid (10
mL) in tetrahydrofuran (100 mL) for 18 hours. The solution was basified and extracted
with dichloromethane, and solvent evaporation gave the title compound D11 as a white
solid. 1H NMR: 6 CDda 2.38 (3H, s), 2.6 (4H, m), 2.9 (4H, m), 3.73 (3H. s) 6.65 (1H, s),
7.86 (1H, s), 8.02 (2H, d) 8.12 (2H, d), 10.12 (1H, s).
Description 12
[4-{8-Methoxy-3-rnethyl-2,3,4,5-tetrahydro-1W-3-benzazepine-7-sulfonyl)-phenyl]-
methanol (D12)
A solution of D11 (2.7 g), tetrahydrofuran (50 ml) and methanol (25 mL) was treated with
sodium borohydride (0.76 g). The solution was stirred for 1 hour then treated with dilute
hydrochloric acid (20 ml). The mixture was basified and extracted with dichloromethane.
The solvent was evaporated and the residue was purified by column chromatography 0-
10% methanol (containing 0.5% aqueous ammonia)-dichloromethane to give the title
compound D12 as a white solid. (1.13 g). 1H NMR: 6 CDCI3 2.36 (3H, s). 2.55 (4H, m),
2.93 (4H, m), 3.73 (3H, s), 4.77 (2H, s) 6.63 (1H, s). 7.47 (2H, d), 7.84 (1H, s) 7.94 (2H,
d).
Description 13
7-{4-Bromobenzenesulfonyl)-8-methoxy-3-methyl-2,3,4,5-tetrahydro-1W-3-
benzazepine (013)
To a stirred solution of 1,4-dibromobenzene (0.665 g, 2.82 mmol, 2.0 eq) in dry
tetrahydrofuran (7 ml) under argon at -78°C was added butyllithium (1.25 mL 2.5M in
hexanes, 3.10 mmol, 2.2 eq) dropwise over 10 min. After a further 30 min. a suspension
of sulfonyl fluoride D4 (0.385 g, 1.41 mmol, 1.0 eq) was added portionwise. The resultant
mixture was allowed to warm to room temperature then stirred for 2 h. The mixture was
quenched with water (40 mL) then extracted twice with ethyl acetate (2 x 40 mL). The
organic layer was washed sequentially with water (50 mL) and brine (50 mL) then dried
over MgSCXt and evaporated to dryness. Purification by Biotage chromatography, eluting
with 1-6% MeOH-CH2CI2 containing 0.5% NH3 afforded the desired product D13 as a
solid, 0.289 g (50%). MH+411.1H NMR 8 (CDCI3) 2.37 (3H, s), 2.55 (4H, m), 2.93 (4H, m),
3.75 (3H, s). 6.65 (1H, s), 7.60 (2H. d), 7.80 (3H, m).
Description 14
7-Ethoxy-8-(4-fiuoro-benzenesulfonyl)-3-methyl-2,3,4,5-tetrahydro-1/y-3-
benzazepine (D14)
a) 7-Ethoxy-3-(t-butoxycarbonyl)-2,3,4,5-tetrahydro-1//-3-benzazeplne
To a solution of 7-hydroxy-3-(t-butoxycarbonyl)-2,3,4,5-tetrahydro-1/-/-3-benzazepine (10
g, 38 mmol) in dimethylformamide (70 ml) was added sodium hydride (60% dispersion in
oil, 1.5g) and the resulting mixture stirred for 0.5h. Ethyl iodide (3.6 mL, 45 mmol) was
added and the mixture stirred for 12h at 70°C. The mixture was cooled to room
temperature and diluted with diethyl ether (200 mL) and water (200 mL), the layers were
separated and the aqueous portion extracted with diethyl ether (200 mL). The combined
organic extracts were washed with brine (200 mL) and sodium hydroxide solution (2N,
200 mL) and then evaporated to give a yellow oil.
b) 7-Ethoxy-2,3,4,5-tetrahydro-1H-3-benzazepine hydrochloride
The material from part (a) was slurried in ethanol (100 mL) and concentrated hydrochloric
acid (10 mL) was added and the mixture stirred for 1h. The solvents were removed in
vacuo and the residue was treated with methanol (10 mL) and then diethyl ether (300 mL)
and the resulting precipitate was filtered and dried (6.7g).
c) 7-Ethoxy-3-methyl-2,3,4,5-tetrahydro-1W-3-benzazepine
The material from part (b) was dissolved in aqueous formalin solution (37%, 60 mL) and
sodium triacetoxyborohydride (10 g) was added, the mixture was stirred for 2h and then
saturated sodium bicarbonate solution (100 mL) was added and the mixture extracted
with dichloromethane (2 x 100 mL). The organic layers were evaporated and the residue
was purified by column chromatography eluting with 10% methanol/dichloromethane.
MH+ 206.
d) 7-Ethoxy-8-(4-fluoro-benzenesulfonyl)-3-methyl-2>3,4,5-tetrahydro-
1 W-3-benzazepine
The title compound D14 was prepared from part (c) in a manner similar to Descriptions 4
and 5
Description 15
7-Ethylsulfanyl-8-(4-f1uoro-benzenesulfonyl)-3-methyl-2,3,4,5-tetrahydro-1W-3-
benzazepine (D15)
A suspension of palladium acetate (22 mg, 0.1 mmol), BINAP (92 mg, 0.15mmol) and
potassium phosphate (312 mg, 1.5mmol) in 1,4-dioxan (4.0 mL) was sonicated for 30
minutes forming a deep, red complex.
The aryl triflate D7 from Description 7 (458 mg, LOmmol) and ethane-thiol (0.25mL, xs).
were added and the mixture heated at 160°C for 30 minutes using microwave technology
(Emrys Optimizer).
The resultant was diluted with ethyl acetate (50 ml) and transferred to a separating funnel
and washed with water (50 ml), then saturated aqueous sodium bicarbonate solution (50
mL). The organic layer was then dried over sodium sulfate and then evaporated in vacuo
to give a crude yellow gum.
The residual gum was applied to a silica 40S biotage column and purified eluting with
ethyl acetate to 20% methanol/ethyl acetate in a gradient fashion to give the title
compound D15 as a yellow oil (265 mg). MI-T 380.
Description 16
2,2,2-TrifIuoro-1-{6-methoxy-3,4-dihydro-1 H-isoquinolin-2-yl)-ethanone (D16)
a) 6-Methoxy-1,2,3,4-tetrahydroisoquinoline hydrochloride salt
To a stirred suspension of 3-methoxyphenethylamine (50.4 g, 0.33 mol, 1.0 eq) in water
(40 ml) was added 37% aqueous formaldehyde solution (27.5 ml, 1.1 eq) and stirring
continued for 20 min. Concentrated HCI (80 ml) was added and the mixture heated at
reflux for 1 h. After cooling to room temperature the mixture was evaporated to dryness.
The residue was recrystallised from acetone, affording the desired product as a white
solid (60.1 g, 90%) which was used without further purification for the next step. MH* 164.
b) 2,2,2-Trifluoro-1 -{6-methoxy-3,4-dihydro-1 H-isoquinolin-2-yl)-ethanone
To an ice bath cooled mixture of 6-methoxy-1,2,3,4-telrahydroisoquinoIine hydrochloride
salt from part a) (23 g. 115.2 mmol) and triethylamine (48 mL) in dichloromethane (400
ml) was added trifluoroacetic anhydride (19.5 mL). The solution was stirred for 1 hour at
room temperature before quenching with saturated sodium bicarbonate. The organic layer
was removed, dried (MgSO4) and purified by chromatography on silica eluting with
10%ElOAc/Hexane up to 30%EtOAc/Hexane yielding the title compound D16 as a clear
oil (7.75 g). MH* 260. 1H NMR 8 (CDCI3) 2.88-2.98 (2H, t), 3.74-3.90 (5H, m), 4.63-4.75
(2H, d), 6.65-6.84 (2H, m). 7.01-7.10 (1H, m).
Description 17
6-Methoxy-2-{2,2,2-trffluoro-ethanoyl)-1,2,3,4-tetrahydro-isoquinoline-7-sulfonyl
chloride (D17)
To an ice bath cooled solution of chlorosulfonic acid (1.3 mL) in dichloromethane (7.7 mL)
was added D16 (0.5 g, 1.39 mmol) in dichloromethane (1.5 mL). The mixture was stirred
at room temperature for 2 hours before partitioning between water and dichloromethane.
The organic layer was removed, dried (MgSO4) and evaporated to yield the title
compound D17 (0.62 g). MH'356. 1H NMR 5 (CDCI3) 2.97-3.07 (2H, m), 3.80-3.94 (2H,
m), 4.70-4.80 (2H, d). 5.29 (3H, s), 6.85-6.95 (1H, d), 7.70-7.80 (1H, d).
Description 18
6-Methoxy-2-(2,2,2-trifIuoro-ethanoyl)-1,2,3,4-tetrahydro-isoquinoline-7-sulfonyl
fluoride (D18)
To a solution of D17 (4.06 g, 11.3 mmol) in dry acetonitrile (46 mL) was added potassium
fluoride (3.45 g. 59.4 mmol) and 1 crystal of 18-crown-6. The mixture was stirred at room
temperature overnight before saturated sodium bicarbonate (46 mL) was added, making
the pH 8. The mixture was extracted with ethyl acetate and the organic extracts were
combined and re-washed with saturated sodium bicarbonate. The organic layer was dried
(MgSO*) and evaporated to give the title compound D18 as a brown solid. MH"340. 'H
NMR 6 (CDCIs) 2.97-3.08 (2H, m), 3.82-3.95 (2H, m), 4.01 (3H, s), 4.74-4.78 (2H, d),
6.88-6.90 (1H, d). 7.71-7.74 (1H, d).
Description 19
7-(4-Fluoro-benzenesulfonyl)-€-methoxy-1,2,3,4-tetrahydro-isoquinoline (D19)
- o
To an ice bath cooled solution of D18 (2.8 g, 8.4 mmol) in dry tetrahydrofuran (30 mL)
was added dropwise 4-fluorophenylmagnesium bromide (42 mL, 1M in tetrahydrofuran ).
The mixture was stirred at room temperature overnight before quenching by the dropwise
addition of potassium-sodium-l-tartrate tetrahydrate (35 g in 93 mL of water). Diethyl ether
(60 mL) was added and the mixture gently shaken. The aqueous was re-extracted with
diethyl ether and the combined organic extracts washed with brine then dried
and evaporated. The crude mixture was purified by chromatography on silica eluting with
dichloromethane up to 10%MeOH/NH3/dichloromethane to yield the title compound D19
as a solid (0.94 g). MH+ 322. 1H NMR 5 (CDCI3) 2.73-2.84 (2H, t), 3.08-3.17 (2H, t), 3.72
(3H, s), 4.01 (2H, s), 6.61 (1H, s), 7.05-7.18 (2H, t), 7.80 (1H, s), 7.92-8.03 (2H, m).
Description 20
7-{4-Fluoro-benzenesulfonyl)-6-methoxy-3,4-dihydro-1 H -isoquinoline-2-carboxylic
acid terf -butyl ester (D20)
To an ice bath cooled solution of di-tert butyl dicarbonate (0.64 g, 2.93 mmol) in dry
tetrahydrofuran (10 mL) was added dropwise a solution of D19 (0.94 g, 2.93 mmol) in dry
tetrahydrofuran (10 mL). The mixture was stirred at room temperature for 3 hours before
evaporating to dryness and partitioning between dichloromethane and brine. The organic
layer was removed, dried (MgSO*), and evaporated yielding the title compound D20 as a
solid (0.9 g). MHT 322. 1H NMR 5 (CDCI3) 1.53 (9H, s). 2.78-2.87 (2H, t), 5.57-3.66 (2H,
m), 3.74 (3H, s), 4.57 (2H, s). 6.65 (1H, s), 7.10-7.19 (2H, t), 7.87 (1H, s), 7.94-8.02 (2H,
m).
Description 21
7-[4-(3-Fluoro-benzyloxy)-benzenesulfonyl]-€-methoxy-3,4-dihydro-1H-isoquinoline-
2-carboxylic acid tert -butyl ester (D21)
To a solution of 3-fluorobenzyl alcohol (150 mg, 1.18 mmol) in dry dimethylsulfoxide (2
mL) was added sodium hydride (34 mg, 0.83 mmol). The mixture was stirred at room
temperature for 1 hour before the addition of D20 (250 mg, 0.59 mmol). The resulting
mixture was heated at 80°C overnight before allowing to cool and partitioning between
ethyl acetate and water. The organic layer was removed, dried (MgSO4) and purified by
chromatography on silica eluting with hexane up to 50% EtOAc/hexane yielded the title
compound D21 as an oil (174 mg). MH* 428. 1H NMR 5 (CDCI3) 1.49 (9H, s), 2.79-2.84
(2H, t), 3.60-3.65 (2H, t). 3.74 (3H, s), 4.56 (2H, s), 5.05-5.10 (2H, d), 6.65 (1H, s), 6.94-
7.19 (5H, m), 7.30-7.43 (1H, m), 7.83-7.94 (3H, m).
Description 22
4-Methoxyphthalic acid (022)
A solution of dimethyl 4-methoxyphthalate (20 g, 89 mmol) was heated at reflux in 10%
aqueous sodium hydroxide (85 ml) for 1 hour. The mixture was cooled to room
temperature then acidified to pH 1 using concentrated hydrochloric acid. The precipitate
that formed was filtered off. washed with water and dried under vacuum to afford the title
compound D22 (13.61 g). MH' 195. 1H NMR 5 (DMSO-d6) 3.83 (3H, s), 7.05-7.10 (3H, m),
7.72 (1H.d).
Description 23
5-Methoxy-isoindole-1,3-dione (D23)
,N—H
0
A mixture of 022 (13.61 g, 69 mmol) and urea (8.3 g, 139 mmol) were heated together in
ethylene glycol (150 mL) at 180°C for 3 hours. The mixture was cooled to room
temperature and the precipitate that formed filtered off, washed with water then dried to
afford the title compound D23 (6.78 g). MH'176. 1H NMR 5 (DMSO-d6) 3.92 (3H, s), 7.27-
7.38 (2H, m), 7.71-7.76 (1H, d).
Description 24
5-Methoxy-2,3-dihydro-1f/-isoindole (024)
N— H
To a suspension of D23 (6.14 g, 35 mmol) in dry tetrahydrofuran (25 ml) was added
dropwise BH3-THF (100 mL, 1M in tetrahydrofuran) then heated at reflux overnight. The
mixture was cooled to 0°C then quenched by dropwise addition of methanol (10 mL). After
stirring at room temperature for 20 minutes 5M HCI (10 mL) was added and the mixture
heated at reflux for 1 hour. The mixture was cooled to room temperature, the pH adjusted
to pH 10 by the addition of 2M NaOH (58 mL) and extracted with dichloromethane. The
organic layer was dried (MgSO4), and evaporated. Purification by SCX followed by
evaporation gave the title compound D24 as an oil (1.76 g). Mt-T 150. 1H NMR 5 (CDCI3)
3.80 (3H, s), 4.17 (2H, s), 4.20 (2H, s), 6.75-6.83 (2H, m), 7.13 (1H, d).
Description 25
5-Methoxy-2-methyl-2,3-dihydro-1 H-isoindole (D25)
N
To a solution of D24 (1.76 g, 11.8 mmol), in 1 ,2-dichloroethane (60 mL) at room
temperature was added 37% aqueous formaldehyde (20 ml, excess). After vigorous
stirring for 5 minutes, sodium triacetoxyborohydride (7 g, excess) was added portionwise
over a 5 minute period, the resultant solution stirred for a further 2 hours. The reaction
was partitioned between saturated sodium bicarbonate and dichloromethane. The organic
phase was washed with water, brine and dried (MgSO4). The solution was evaporated to
dryness and purified by SCX to give the title compound D25 as an oil (1.69 g). MH* 164
1H NMR 5 (CDCI3) 2.57 (3H, s), 3.78 (3H, s), 3.84 (2H, s), 3.87 (2H, s). 6.71-6.74 (2H, m),
7.07 (1H.d).
Description 26
6-Methoxy-2-methyl-2,3-dihydro-1 W-isoindole-5-sulfonyl fluoride (D26)
To an ice bath cooled solution of D25 (0.12 g, 0.74 mmol) in trifluoroacetic acid (0.8 ml)
was added chlorosulfonic acid (0.1 1 ml). The mixture was stirred at room temperature for
2 hours. The solvents were removed by evaporation before thionyl chloride (1 mL) was
added and the mixture heated at reflux for 1 hour. The resulting mixture was evaporated
and re-dissolved in acetonitrile (6 mL) adding KF (1 g). The mixture was stirred at room
temperature overnight. Saturated sodium bicarbonate and ethyl acetate were added, the
organic layer was separated, dried (MgSO4) and evaporated to dryness affording the title
compound D26 as a solid (110 mg). MH* 246. 1H NMR 5 (CDCI3) 2.59 (3H, s), 3.89 (2H,
s), 3.95 (2H, s), 3.99 (3H, s), 6.94 (1H. s), 7.73 (1H, s).
Description 27
5-{4-Fluoro-benzenesulfonyl)-6-methoxy-2-methyl-2,3-dihydro-1 H-isoindole (D27)
To an ice bath cooled suspension of D26 (2.36 g, 9.6 mmol) in dry tetrahydrofuran (30
mL) was added 4-fJuorophenylmagnesium bromide (27 ml, 1M in tetrahydrofuran). The
mixture was stirred at room temperature overnight before quenching by the dropwise
addition of potassium-sodium-l-tartrate tetrahydrate (35 g in 93 mL of water). Diethyl ether
(60 ml) was added and the mixture gently shaken. The aqueous was re-extracted with
diethyl ether and the combined organic extracts washed with brine, dried (MgS04) and
evaporated. The crude mixture was purified by chromatography on silica eluting with
EtOAc up to 5% MeOH/NHa/EtOAc yielding the title compound D27 as a solid (720 mg).
MH+ 322. 'H NMR 5 (CDCI3) 2.57 (3H, s), 3.74 (3H, s), 3.89 (4H, s). 6.75 (1H, s), 7.10-
7.20 (2H, t). 7.90-8.03 (3H, m).
Description 28
[8-{4-Bromo-benzenesulfonyl)-3-methyN2,3,4,5-tetrahydro-1H-3-benzazepin-7-yl]-
dimethyl-amine (028)
a) 7-Arnino-8-iodo-1,2,4,5-tetrahydro-3-benzazepine-3-carboxylic acid terf-butyl
ester
A solution of 7-amino-1,2,4,5-tetrahydro-3-benzazepine-3-carboxylic acid tert-butyl ester
(5 g, 3.8 mmoi) (see WO98/30560) in dichloromethane/methanol (300/150 ml) was added
benzyl trimethylammonium iodine dichloride (6.6 g, 3.8 mmol) and calcium carbonate (2.9
g). The mixture was stirred at room temperature for 30 mins and then evaporated in
vacuo. The residue was partitioned between diethyl ether (100 ml) and 5% sodium sulfite
solution (200 ml) and the layers separated and the organic portion evaporated to give the
subtitled compound (6.2 g) MH* 389.
b) 7-Dimethylamino-8-iodo-1,2,4,5-tetrahydro-3-benzazepine-3-carboxylic acid fenfbutyl
ester
7-Amino-8-iodo-1,2,4,5-tetrahydro-3-benzazepine-3-carboxylic acid terf-butyl ester was
dimethylated using an analogous procedure to Example E2 to give the subtitled
compound. MHM17.
c) (4-Bromo-phenylsulfanyl)-dimethylamino-1,2,4l5-tetrahydro-3-benzazepine-
3-carboxylic acid ferf-butyl ester
7-Dimethylamino-8-iodo-1,2,4,5-tetrahydro-3-benzazepine-3-carboxylic acid ferf-butyl
ester (100 mg, 0.24 mmol). copper(l) iodide (2.3 mg) and potassium phosphate (102 mg)
were stirred under an argon atmosphere in ethylene glycol (3 ml). 4-Bromophenylthiol (68
mg) was added and the mixture heated at 160°C for 30 mins in a microwave reactor. The
mixture was treated with sodium bicarbonate solution and extracted with dichloromethane
(2 x 50 ml) and the combined organic extracts were treated with di-tert butyl dicarbonate
and triethylamine to convert any deprotected material back to the protected form. Sodium
bicarbonate/dichioromethane workup gave the desired product (125 mg) MH* 478.
d) (4-Bromo-benzenesulfonyl)-dimethylamino-1,2,4,5-tetrahydro-3-benzazepine-3-
carboxylic acid dimethyl-ethyl ester
(4-Bromo-phenylsulfanyl)-dimethylamino-1,2,4,5-tetrahydro-3-benzazepine-3-carboxylic
acid /erf-butyl ester (2.8 g, 6.0 mmol) in dichloromethane (5 ml) was added to magnesium
monoperoxyphthalate hexahydrate (MMPP) (7.4g, 80%) in dichloromethane (20 ml) and
methanol (3 ml) at 0°C dropwise. After addition the mixture was allowed to warm to room
temperature and stirred for 1h then a further portion of MMPP (1 g) was added and stirred
for a further ih. Sodium sulfite solution (10%, 300 ml) was added and the mixture stirred
thoroughly for 30 min). Water (3 L) and dichloromethane (400 ml) were then added and
the organic layer separated and washed with sodium bicarbonate solution (500 ml), water
(2 x 1 L) and brine (500 ml) then evaporated in vacua. Chromatography on silica eluting
with 0-20% ethyl acetate/hexane afforded 3.22 g of the subtitled compound. MHT 510.
e) [8-(4-Bromo-benzenesulfonyl)-3-methyl-2,3,4,5-tetrahydro-1 Hr3-benzazepin-7-yl]- -
dimethyl-amine (D28)
(4-Bromo-benzenesulfonyl)-dimethylamino-1,2,4,5-tetrahydro-3-benzazepine-3-carboxylic
add dimethyl-ethyl ester was converted to the title compound by using an analogous
procedure to descriptions D14b and D14c to give the subtitled compound D28. MH* 424.
Description 29
7-(4-Fluoro-benzenesulfonyl)-8-isopropoxy-3-methyl-2,3,4,5-tetrahydro-1H-3-
benzazepine (D29)
The phenol (D6) (1.1 g), triphenylphosphine (1.7 g) and isopropanol (0.5 ml) were
dissolved in tetrahydrofuran and cooled to 0°C, Diisopropyl azodicarboxylate (1.3 ml) was
added dropwise and the mixture stirred at room temperature for 1 h. The mixture was
passed through an SCX column and then Chromatography on silica eluting with 4%
methanol/dichloromethane afforded the titled compound D29 (870 mg) MH* 365
Description 30
[8-(4-Fluoro-benzenesulfonyl)-3-methyl-2,3,4,5-tetrahydro-1H-3-benzazepin-7-yl]-
dimethyl-amine (030)
a) 7-Dimethylamino-8-(4-fluoro-benzenesulfonyl)-1)2,4,5-tetrahydro-3-benzazeplne-
3-carboxylic acid dimethyl-ethyl ester
Iodide (D28b) (7 g) and 4-fluorophenylsulfonylfluoride (6 g) were cooled to -78°C in
tetrahydrofuran (80 ml) under an argon atmosphere. n-Butyllithium (2.5M, 14 ml) was
added dropwise and the mixture stirred for 1h at -78°C and then quenched with water (20
ml) and dichloromethane (30 ml). The organic layer was separated and evaporated to
give the crude product. Chromatography on silica eluting with 7-20% ethyl
acetate/pentane afforded the subtitled compound (5.6 g) MH* 449.
b) [8-(4-Fluoro-benzenesulfonyl)-3-methyl-2,3,4,5-tetrahydro-1H-3-benzazepin-7-yl]-
dimethyl-amine
7-Dimethylamino-8-(4-fIuoro-benzenesulfonyl)-1,2,4,5-tetrahydro-3-benzazepine-3-
carboxylic acid dimethyl-ethyl ester was converted to the title compound by using an
analogous procedure to descriptions D14b and D14c to give the title compound D30. MH*
349.
Description 31
6-Ethoxy-7-(4-fluoro-benzenesulfonyl)-1,2,3,4-tetrahydro-isoquinoline (D31)
a) 3-Ethoxy-benzaldehyde
To a solution of 2-hydroxybenzaldehyde (20g, 163 mmol) in acetone (250 mL) was added
anhydrous potassium carbonate (33g, 239 mmol) followed by ethyl iodide (17mL, 211
mmol). The mixture was heated at reflux for 12 hours. After cooling to room temperature
water and ethyl acetate were added. The organic layer was removed, dried over MgSC>4
and evaporated to dryness yielding the subtitled compound as a yellow oil (22.1 Og). 1H
NMR5 (CDCI3) 1.40-1.50 (3H, t), 4.02-4.15 (2H, q), 7.13-7.22 (1H, m), 7.36-7.48 (3H, m),
9.97 (1H,s).
b) 1 -Ethoxy-3-(2-nitro-«thyl)-benzene
A mixture of nitromethane (0.36 ml, 6.7 mmol} and 3-ethoxy-benzaldehyde (1g, 6.7
mmol) in methanol (1.4 ml) was cooled to -10°C. To this mixture sodium hydroxide (0.28g
in 1 ml water) was added dropwise. The temperature during addition was maintained
around 10°C. After 1 hour a yellow precipitate formed and water (5 ml) was added. The
resulting solution was added to HCI (4M, 3 ml). The precipitate that formed was filtered
off and washed with water. Purification by chromatography on silica, eluting with 1 to 15%
ethyl acetate in hexane, gave the subtitled compound as a yellow solid (0.49g). 1H NMR 5
(CDCI3) 1.40-1.48 (3H, t), 4.01-4.13 (2H, q), 6.97-7.06 (2H, m), 7.09-7.15 (1H, d), 7.30-
7.40 (1H, t), 7.53-7.62 (1H, d), 7.91-8.00 (1H, d).
c) 2-(3-Ethoxy-phenyl)-ethylamine
To a solution of LiAIH4 (1M in THF, 13mL) was added dropwise a solution of 1-ethoxy-3-
(2-nitro-ethyl)-benzene (0.5g, 2.6 mmol) in THF (8 ml). The mixture was refiuxed for two
hours before allowing to cool and adding dropwise to rochelles salt. The mixture was
extracted with ethyl acetate, dried with sodium sulfate and evaporated to dryness. The
resulting yellow oil was purified by chromatography on silica, eluting with 3 to 15%
MeOH/NH3 in dichloromethane, yielding the subtitled compound as a yellow oil (0.23g).
MH+166. 1H NMR 6 (CDCI3) 1.31-1.43 (3H, t), 2.66-2.76 (2H, t), 2.90-3.00 (2H, t), 3.96-
4.10 (2H, q), 6.70-6.80 (3H, m), 7.15-7.26 (1H, m).
d) 6-Ethoxy-1,2,3,4-tetrahydro-isoquinoline
A stirred mixture of 2-(3-ethoxy-phenyl)-ethylamine (7.0g, 42 mmol) and 37% aqueous
formaldehyde solution (3.5 ml) was heated at 100°C for 30 minutes. The stirring was
stopped and the upper water layer was removed by pipette . To the resulting mixture
water (5.25 ml) and concentrated HCI (10.5 ml) were added followed by heating 100°C
for 30 minutes. After allowing to cool to room temperature the mixture was evaporated to
dryness and recrystallised from acetone yielding the subtitled compound as a cream solid
(2.73g). MH* 178. 1H NMR 5 (DMSO) 1.27-1.35 (3H, t), 2.88-3.03 (2H, t), 3.18-3.40 (2H,
br.t), 3.95-4.08 (2H, q), 4.10-4.22 (2H, m), 6.74-6.85 (2H, m), 7.05-7.15 (1H, m). 9.33-9.55
(2H, br.s).
e) 1-(6-Ethoxy-3,4-dihydro-1H-isoquinolin-2-yl)-2,2,2-trifluoro-ethanone
To a solution of 6-ethoxy-1,2,3,4-tetrahydro-isoquinoline (2.52g, 14.2 mmol) and
triethylamine (6 mL) in dichloromethane (50 ml) at 0°C was added dropwise
trifluoroacetic anhydride (2.4 mL, 17mmol). The mixture was stirred at room temperature
for 1 hour before washing with saturated sodium bicarbonate. The organic layer was
removed, dried over sodium sulfate and evaporated to dryness. The resulting oil was
purified by chromatography on silica, eluting with 10 to 30 % ethyl acetate in hexane to
yield the subtitled compound as a clear oil (2.50g). MH*274. 'H NMR 5 (CDCI3) 1.35-1.45
(3H, t), 2.84-2.95 (2H, m), 3.75-3.89 (2H, m), 3.96-4.10 (2H, q), 3.65-3.77 (2H, d), 3.65-
3.83 (2H, m), 6.97-7.08 (1H, t).
f) 6-Ethoxy-2-(2,2,2-trif1uoro-ethanoyl)-1,2,3,4-tetrahydro-isoquinoline-7-sulfonyl
chloride
To a solution of chlorosulfonic acid (0.48 mL) in dichloromethane (5 ml) at 0°C was
added dropwise a solution of 1-(6-ethoxy-3,4-dihydro-1H-isoquinolin-2-yl)-2,2,2-trifluoroethanone
(0.39g, 1.43 mmol). The mixture was stirred at room temperature overnight
before partitioning between water and dichloromethane. The organic layer was removed,
dried over sodium sulfate, filtered and evaporated to dryness yielding the subtitled
compound as a clear oil (0.34g). 'H NMR 5 (CDCI3) 1.46-1.63 (3H, t), 2.95-3.06 (2H, m).
3.80-3.95 (2H, m), 4.18-4.32 (2H, m), 4.69-4.80 (2H, d), 6.84-6.93 (1H, d), 7.70-7.79 (1H,
d).
g) e-Ethoxy^^^^-trifluoro-ethanoylJ-l^.a^-tetrahydro-isoquinoline-T-suIfonyl
fluoride
To a solution of 6-ethoxy-2-(2,2,2-trifluoro-ethanoyl)-1,2,3,4-tetrahydro-isoquinoline-7-
sulfonyl chloride (0.34g, 0.92 mmol) in acetonitrile (3.8 rnL) was added potassium fluoride
(0.28g, 4.8 mmol) and 18-crown-16 (1 crystal). The mixture was stirred at room
temperature overnight before addition of aqueous sodium bicarbonate to pH 8. The
resulting mixture was extracted with ethyl acetate, dried over MgSO4 and evaporated to
dryness yielding the subtitled compound as a white solid (0.29g). MH"354. 1H NMR 5
(CDCI3) 1.43-1.53 (3H, t), 2.95-3.07 (2H, m), 3.80-3.93 (2H, m), 4.14-4.26 (2H, m), 4.70-
4.80 (2H,d), 6.82-6.90 (1H, d), 7.68-7.75 (1H, d).
h) 6-Ethoxy-7-(4-fluoro-benzenesulfonyl)-1,2,3,4-tetrahydro-isoquinoline
To an ice bath cooled solution of 6-ethoxy-2-(2,2,2-trifluoro-ethanoyl)-1,2,3,4-tetrahydroisoquinoline-
7-sulfonyl fluoride (1.30g, 3.66mmol) in THF (13 mL) was added dropwise 4-
fluorophenylmagnesium bromide (18.3 mL, 18.3mmol). The mixture was stirred at room
temperature overnight before quenching with aqueous sodium potassium tartrate
tetrahydrate (13g). The aqueous was extracted twice with diethyl ether. The organics
were combined, dried and evaporated to dryness. The resulting oil was purified by
chromatography on silica, eluting with 1 to10% MeOH/NH3 in dichloromethane to yield the
title compound D31 as a solid (700mg). MH+ 336. 1H NMR 5 (CDCI3)1.22-1.37 (3H, t),
2.74-2.91 (2H, m), 3.08-3.19 (2H, t), 4.01 (2H, s), 4.13-4.25 (2H, m), 6.58 (1H, s), 7.06-
7.20 (2H, m), 7.83 (1H, s), 7.91-8.01(2H, m).
Description 32
(4-Bromo-phenyf)-{3-methoxy-benzyl)-methyl-amine (D32)
Br
a) N-{4-Bromo-phenyl)-formamide
Formic acid (7mL, 186mmol) and acetic anhydride (14.1mL, 150mmo!) were heated
together at 55°C for 2 hours. The mixture was cooled to room temperature, THF (110mL)
was added followed by 4-bromoaniline (10g, 58mmol) in THF (20mL). The mixture was
stirred at room temperature for 3 hours before evaporating to dryness. Trituration of the
solid gave the subtitled compound as a light brown solid (8.22g). MH" 198/200. 1H NMR 6
(CDCIj) 6.93-7.04 (2H, d), 7.24 (2H, s), 8.59-8.70 (1H, d).
b) (4-Bromo-phenyl)-methyl-amine
To a solution of N-(4-Bromo-phenyl)-formamide D32a (8.2g, 41mmol) in dry THF (100mL)
was added BF3.Et2O (8.2mL, 61mmol). The mixture was heated to reflux and BH3.THF
(103mL, 103mrnol) added dropwise, the mixture was heated for a further 2 hours. After
cooling to room temperature concentrated HCI (100mL) was added and the mixture stirred
for one hour. The pH of the mixture was adjusted to pH 13 using concentrated NaOH.
Extraction with ether, drying over MgSO4 and evaporating to dryness gave the subtitled
compound as light brown oil (7.58g). MH* 186/188. 1H NMR 6 (CDCI3) 2.81 (3H, s), 3.63-
3.78 (1H, br.s), 6.43-6.52 (2H, d), 7.22-7.30 (2H, d).
c) (4-Bromo-phenyl)-{3-methoxy-benzyl)-methyl-arnine
To a solution of D32b (300mg, 1.6mmol) in 1.2 dichloroethane (10mL) was added manisaldehyde
(0.39mL, 3.2mmol). After stirring at room temperature for 10 minutes
sodium triacetoxyborohydride (678mg, 3.2mmol) was added. The mixture was stirred at
room temperature overnight before quenching with saturated sodium bicarbonate.
Extraction of the crude mixture with dichloromethane followed by chromatography on
silica, eluting with 0 to 20 % ethyl acetate in hexane yielded the title compound (D32) as a
clear oil (300mg). MH* 308/306.1H NMR 5 (CDCI3) 3.00 (3H, s). 3.76 (3H, s), 4.47 (2H, s),
6.53-6.64 (2H, d), 6.72-6.84 (3H, m), 7.18-7.32 (3H, m).
Description 33
7-[4-(te/t-Butyldimethylsilyloxymethyl)benzenesulfonyl]-6-methoxy-1,2,3,4-
tetrahydroisoquinoline (033)
To a stirred solution of (4-bromobenzyloxy)tert-buty!dimethylsilane (8.74 g. 29.0 mmol, 5.0
eq) [prepared according to the procedure by Boaz et a/, J. Org. Chem.; 1993, 58, 3042-
3045] in THF (50 ml) under argon at -78°C was added dropwise buryllithium (12.0 ml 2.5M
in hexanes, 30.2 mmol, 5.2 eq). After 30 mins at -78°C a solution of sulfonyl fluoride D18
(1.98 g, 5.80 mmol, 1.0 eq) in THF (15 ml) was added dropwise. The resultant red
solution was stirred for a further 1 h then quenched at -78°C by the addition of glacial
acetic acid (4 ml) followed by water (50 ml) and the mixture allowed to warm to room
temperature. The pH was adjusted to 7 with saturated NaHC03 solution then extracted
with ethyl acetate (2 x 100 ml). The organic solution was washed with water (100 ml),
brine (100 ml), dried over MgSCX, and concentrated to dryness. Purification by biotage
chrornatography, eluting with 5-10% MeOH-CH2CI2 containing 0.2% NH3 afforded the
desired product as a white solid (2.46 g, 84%). MH* 448. 1H NMR: 5 CDCI3 0.10 (6H, s),
0.94 (9H, s), 2.79 (2H, t). 3.12 (2H, t), 3.71 (3H, s), 4.02 (2H, s), 4.78 (2H, s), 6.60 (1H, s),
7.42 (2H, d), 7.81 (1H, s), 7.91 (2H, d).
Description 34
/-^-{fert-ButyldimethylsilyloxymethyObenzenesulfonylJ-B-methoxy-S^-dihydro-IWisoquinoline-
2-carboxylic acid fed-butyl ester (D34)
To a solution of the amine D33 (2.21 g, 4.94 mmol, 1.0 eq) in dichloromethane (45 ml) at
room temperature was added triethylamine (0.70 g, 6.92 mmol, 1.4 eq) and solid (Boc)2O
(1.29 g, 5.92 mmol, 1.2 eq). After 16 h at room temperature water was added (100 ml)
and the layers separated. The aqueous layer was extracted with more dichloromethane
(50 ml) and the combined organic layer washed with brine (100 ml), dried over MgSO4
and evaporated to dryness. Purification by biotage chromatography, eluting with 30-50%
EtOAc-hexane afforded the desired product D34 as a white solid (2.56 g, 95%). MH+ not
observed. 1H NMR: 6 CDCI3 0.10 (6H, s), 0.94 (9H, s), 1.50 (9H, s). 2.82 (2H, t), 3.63 (2H,
t), 3.73 (3H, s), 4.58 (2H, s). 4.79 (2H, s), 6.64 (1H, s), 7.43 (2H, d), 7.90 (1H, s), 7.92
(2H. d).
Description 35
7-{4-Hydroxymethyl-benzenesulfonyl)-6-methoxy-3,4-dihydro-1W-isoquinoline-2-
carboxylic acid terf-butyl ester (D35)
To a stirred solution of silyl ether D34 (2.49 g, 4.55 mmol, 1.0 eq) in THF (30 ml) was
added Bu4NF (5.0 ml 1M solution in THF, 5.00 mmol, 1.1 eq). After 30 min at room
temperature, water (50 ml) and EtOAc (50 ml) were added and the layers separated. The
organic solution was washed with brine (50 ml), dried over MgSO4 and concentrated to
dryness. The residual solid was triturated three times with hexane to remove tertbutyldimethylsilyl
fluoride then dried in vacua, giving a white solid which required no
further purification (1.90 g, 96%). MH* not observed. 1H NMR: 5 CDCI3 1.50 (9H, s), 2.82
(2H, t), 3.63 (2H, t), 3.73 (3H, s), 4.58 (2H, s), 4.78 (2H, s), 6.64 (1H, s), 7.47 (2H, d), 7.88
(1H, s), 7.94 (2H, d).
Description 36
7-[4-{4-Chlorophenoxymethyl)benzenesulfonyl]-6-methoxy-3,4-dihydro-1Hisoquinoline-
2-carboxylic acid terf-butyl ester (036)
To a stirred solution of the alcohol D35 (0.177 g, 0.408 mmol, 1.0 eq), triphenylphosphine
(0.118 g, 0.449 mmol, 1.1 eq) and 4-chlorophenol (0.058 g, 0.449 mmol, 1.0 eq) in THF (3
ml) under argon at 0°C was added dropwise diisopropyl azodicarboxylate (88 ul, 0.449
mmol, 1.1 eq). When addition was complete, the mixture was allowed to warm to room
temperature and stirred for 3h. Water (20 ml) and EtOAc (20 ml) were added and the
layers separated. The aqueous layer was extracted with more EtOAc (20 ml) and the
combined organic layer washed with brine (40 ml), dried over MgSO4 and concentrated to
dryness. Purification by biotage chromatography, eluting with 30-50% EtOAc-hexane
afforded the desired product as a colourless oil (0.179 g, 81%). M-Boc* 444. 'H NMR: 5
CDCI3 1.50 (9H, s), 2.83 (2H, t), 3.63 (2H, t), 3.73 (3H, s), 4.58 (2H, s), 5.09 (2H, s), 6.65
(1H, s), 6.87 (2H, d), 7.24 (2H, d), 7.52 (2H, d), 7.89 (1H, s), 7.98 (2H, d).
Description 37
3-Methyl-7-(4-fluorophenylsulfonyl)-9-phenyl-1,2,4,5-tetrahydro-3-benzazepine (D37)
a) 3-Trifluoroacetyl-9-iodo-1,2,4,5-tetrahydro-3-benzazepine-7-sulfonyl fluoride
To a solution of 3-trifluoroacetyl-1,2,4,5-tetrahydro-3-benzazepine-7-sulfonyl fluoride (D1)
(5.3g, 17mmo!) in trifluoromethanesulfonic acid (30ml) at 0°C was added portionwise Niodosuccinimide
(5.9g, 25mmol). The resulting solution was stirred for 1h without cooling
then poured into saturated aqueous sodium hydrogencarbonate (200ml) containing
sodium sulfite (1g), extracted with ethyl acetate (100ml), and the resulting organic layer
washed with brine (100ml), dried (MgSO*), and evaporated. Chromatography on silica,
eluting with 3:1 hexane:ethyl acetate gave the subtitle compound as a white solid (5.2g).
b) 7-(4-Fluorophenylsulfonyl)-9-iodo-1,2,4,5-tetrahydro-3-benzazepine
To a solution of 3-trifluoroacetyl-9-iodo-1,2,4,5-tetrahydro-3-benzazepine-7-sulfonyl
fluoride (5.2g, 11.5mmoi) in tetrahydrofuran (50ml) was added 4-fluorophenylmagnesium
chloride (50ml, 1M in tetrahydrofuran, 50mmol). The resulting solution was stirred for 18h
without cooling then poured into saturated aqueous sodium potassium tartrate (150ml),
and extracted with diethyl ether (100ml), The resulting organic layer washed with brine
(100ml), dried (MgSO4), and evaporated. Isolation using an SCX column and
crystallisation from diethyl ether gave the subtitle compound as a white solid (2.4g).
c) 3-Methyl-7"(4-fluorophenylsulfony|)-9-iodo-1,2,4,5-tetrahydro-3-benzazepine
To a solution of 7-(4-fluorophenylsulfonyl)-9-iodo-1,2,4,5-tetrahydro-3-benzazepine (2.4g,
5.5mmol) in dichloromethane (20ml) were added sodium triacetoxyborohydride (1.8g,
8.5mmol) and formalin (1ml, 37%, 12mmol). The mixture was stirred for 2h without
cooling then poured into water (100ml) and extracted with more dichloromethane (100ml).
The resulting organic layer was washed with brine (100ml), dried (MgSO4), and
evaporated to give the subtitle compound as a white foam (2.4g).
d) 3-Methyl-7-(4-fluorophenylsulfonyl)-9-phenyl-1,2,4,5-tetrahydro-3-benzazepine
A mixture of 3-methyl-7-{4-fluorophenylsulfonyl)-9-iodo-1,2,4,5-tetrahydro-3-benzazepine
(0.9g, 2mmol), phenylboronic acid (0.4g, 3mmol), potassium carbonate (1.6g, 12mmol).
ethanol (6ml), water (6ml), and toluene (25ml) was degassed, then
tetrakis(triphenylphosphine)palladium (0) (100mg) was added and the mixture heated at
60°C for 18h. After cooling the mixture was poured into water (50ml) and extracted with
more ethyl acetate (50ml). The resulting organic layer washed with brine (100ml), dried
(MgSO,*), and evaporated. Isolation using an SCX column and subsequent
chromatography on silica eluting with 0 to 10% methanol in dichloromethane containing
0.1M ammonia, gave the title compound as a white foam (0.6g). 1H NMR 5 (dfi-DMSO) 2.2
(3H, s), 2.5 (4H, m), 2.8 (2H, m), 3.1 (2H, m), 7.2 (2H, m), 7.4 {5H, m), 7.6 (1H, s), 7.8
(1H,s),and8.1 (2H. m).
Example 1
7-Methoxy-8-(3-phenoxy-benzenesulfonyl)-2,3,4,5-tetrahydro-1H-3-benzazepine
hydrochloride (E1)
N—H
A solution of 3-phenoxy-bromobenzene (1.5 g, 6 mmol) in tetrahydrofuran (10 ml) at -
78°C was treated with tert-butyllithium (6 ml, 1.7M in pentane, 10.2 mmol). After 20 min
at -78°C, a solution of D2 (0.53 g, 1.5 mmol) in tetrahydrofuran (10 mL) was added, and
after a further 30 min stirring without cooling, water (50 mL) and ethyl acetate (50 mL)
were added. The organic layer was washed with brine, dried (MgSO,»), and evaporated.
Chromatography on silica, eluting with 6% methanol in dichloro-methane containing 0.5%
ammonia, gave the title compound E1 (0.2 g) isolated as the hydrochloride salt from
ether. MH+ 409. 'H NMR 6 (CDC!3) 2.93 (8H, s), 3.70 (3H, s), 6.45 (1H, s), 7.02 (2H, d),
7.20 (2H, m), 7.38 (3H, m), 7.64 (2H, m), 7.80 (1H, s).
Example 2
7-Mcthoxy-3-methyl-8-(3-phenoxy-benzenesulfonyl)-2,3,4,5-tetrahydro-1W-3-
benzazepine hydrochloride (E2)
A mixture of E1 hydrochloride salt (0.2 g, 0.5 mmol), sodium triacetoxyborohydride (400
MG), aqueous formaldehyde (0.5 ml, 37%). and 1,2-dichloroethane (10 mL containing
0.5 mL triethylamine) was stirred for 18h then diluted with dichloromethane (50 mL) and
washed with saturated aqueous sodium hydrogen carbonate(100 mL), dried (MgSO4), and
evaporated to give the title compound E2 isolated as the hydrochloride salt from ether (0.3
g). MH+ 423. 'H NMR 5 (CDCI3) 2.39 (3H, s), 2.60 (4H, m), 2.97 (4H, m), 3.70 (3H, s),
6.65 (1H, s), 6.99 (2H, d), 7.20 (2H, m), 7.38 (3H, m), 7.63 (2H, m), 7.81 (1H, s).
Example 3
7-(3-Benzyloxyphenylsulfonyl)-2,3,4,5-tetrahydro-1/y-3-benzazepine hydrochloride
(E3)
a)7-{3-Benzyloxyphenylsulfonyl)-3-(t-butoxycarbonyl)-2,3,4,5-tetrahydro-1W-3-
benzazepine
A solution of D3 (270 mg, 0.67 mmol) in dimethylformamide (5 mL) was treated with 60%
sodium hydride (40 mg) at 0°C, then allowed to warm to room temperature. Benzyl
bromide (137 mg, 0-8 mmol) in dimethylformamide (2 mL) was added, and the solution
stirred overnight. The mixture was then poured onto water and extracted with ethyl
acetate. The combined organic layers were washed with brine dried and evaporated.
Chromatography on silica, eluting with 40% ethyl acetate in hexane afforded the product
(200 mg). MH"494.
b) 7-{3-Benzyloxyphenylsulfonyl)-2,3,4,5-tetrahydro-1W-3-benzazepine
hydrochloride
A solution of E3a (200 mg) in ether (1 ml) was treated with HCI in dioxan (12 mL; 4M).
After 2 h, ether was added and the precipitate filtered and dried to afford the title
compound E3 (186 mg). MH* 394.
Examples 4-30 were prepared using analogous procedures to Examples 1, 2 and 3.
Products were isolated as either the free bases or hydrochloride salts. All 1H NMR
are consistent with the structures shown.
Example 31
7-[4-{4-Chloro-benzyloxy)-benzenesulfonyl]-8-methoxy-3-methyl-2,3,4,5-tetrahydro-
1/Y-3-benzazepine hydrochloride (E31)
Sodium hydride (60% in oil) (2.52 g, 63 mmol) was suspended in dry dimethylsulfoxide
(30 ml) and 4-chlorobenzyl alcohol (12 g, 84 mmol) in dry dimethylsulfoxide (30 ml) was
added over 15 min by syringe keeping the temperature below 30°C (internal). This
solution was stirred for 15 minutes to give a grey clear solution. The fluorosulfone D5 (15
g) was then added as a solid portionwise over 10 minutes keeping the temperature below
35 °C and the solution was stirred until the temperature began to fall, (approximately 10
minutes). The solution was then heated to 40 °C and stirred at this temperature for 1.5
hours with monitoring by LC and MS. The reaction mixture was then poured into 2M HCI
( 600 mL) and extracted with ethyl acetate (400 mL x 1 and 250 mL x 2) [this extraction
was done by decantation into a separating funnel as leaving the oil which had precipitated
in the conical flask along with some aqueous]. The ethyl acetate extracts were washed
with a mixture of water 200 mL, brine 20 mL and 2M HCI 10 mL. The combined aqueous
layers were cooled and basified with 12.5M sodium hydroxide and extracted with ethyl
acetate (400 mL x 1 and 250 mL x 2), washed with brine and dried over sodium sulfate.
The solvent was removed to give the title compound E31 (free base) as a cream coloured
solid (18.24 g). A combined batch of 35.6 g of the free base was recrystallised from
ethanol (following the addition of ethereal hydrogen chloride) which afforded the title
compound E31 as the hydrochloride salt 30.6 g. MH* 471. 1H NMR 8 (DMSO) 2.78 (3H,
s), 2.9-3.2 (4H, m), 3.2-3.6 (4H, m), 3.73 (3H, s), 5.19 (2H, s), 7.08 (1H, s). 7.18 (2H, d),
7.47 (4H, s), 7.79-7.83 (3H, m).
Examples 32-74 161 and 162 were prepared from D5 (or the appropriate R4
substituted O5) and the appropriate alcohol using an analogous procedure to
Example 31. Products were isolated as either the free bases or hydrochloride salts.
All 1H NMR are consistent with the structures shown.
Examples 75-80 were prepared from D8 and the appropriate alcohol using an
analogous procedure to Example 31. Products were isolated as either the free
bases or hydrochloride salts. All 1H NMR are consistent with the structures shown.
Examples 81-84 and 163-181 were prepared from D14 and the appropriate alcohol
using an analogous procedure to Example 31. Products were isolated as either the
free bases or hydrochloride salts. All 1H NMR are consistent with the structures
shown.
Examples 85-87 were prepared from D15 and the appropriate alcohol using an
analogous procedure to Example 31. Products were isolated as either the free
bases or hydrochloride salts. All 1H NMR are consistent with the structures shown.
Examples 144-149 were prepared from 029 and the appropriate alcohol using an
analogous procedure to Example 31. Products were Isolated as either the free
bases or hydrochloride salts. All 1H NMR are consistent with the structures shown.
Examples 150-160 were prepared from 030 and the appropriate alcohol using an
analogous procedure to Example 31. Products were isolated as either the free
bases or hydrochloride salts. All 1H NMR are consistent with the structures shown.
Example 88
(4-Fluoro-benzyl)-[4-{8-methoxy-3-methyl-2,3,4,5-tetrahydro-1A/-3-benzazeplne-7-
sulfonyl)-phenyl]-amine hydrochloride (E88)
The aniline D10 (0.867 mmol, 300 mg) was dissolved in 1,2-dichloroethane (15 ml_) and
4-fluorobenzaldehyde (7.6 eq., 6.6 mmol, 0.818 g) was added. The mixture was stirred at
room temperature for 30 minutes and sodium triacetoxyborohydride (3.2 eq., 2.77 mmol,
0.588 g) was added and stirred for 14 hours. The reaction mixture was poured onto
NaHCO3 (saturated solution) (50 ml_), vigorously stirred for 10 minutes and the organics
were separated from the aqueous, dried over Na2SO4, filtered and the solvent was
evaporated to afford 450 mg of crude product as a pale yellow solid. Chromatography on
silica eluting with 0-10% MeOH-NH3 - DCM afforded 300 mg of the title compound E88
(76%), which was converted to the hydrochloride salt and isolated as a white solid. MH*
455.
Examples 89-103 and 185 were prepared from the aniline D10 and the appropriate
aldehyde using an analogous procedure to Example 88. Products were isolated as
either the free bases or hydrochloride salts. All 1H NMR are consistent with the
structures shown.
Example 104
[4-(8-Methoxy-3-methyl-2,3,4,5-tetrahydro-1W-3-benzazepine-7-sulfonyl)-phenyrjphenyl-
amine hydrochloride (E104)
H j
//\N o o
n-Butyllithium (1.0 ml, 1.6M in hexane, 1.6 mmol) was added to a solution of aniline (185
mg, 2.0 mmol) in tetrahydrofuran (2 ml) at -70°C. After the fluorosulfone D5 (180 mg.
0.5 mmol) was added and the solution stirred without cooling for 18 h. Water (20 mL) and
ethyl acetate (20 ml) were added and the organic layer dried (MgSO4) and evaporated.
The resulting residue was chromatographed on silica gel eluting with 0 to 10% methanol
in dichloromethane to give the title compound, isolated as the hydrochloride salt from
diethyl ether (55 mg, 24%). MH* 423.
Examples 105-106 and 197 were prepared from the fiuorosulfone 05 and the
appropriate aniline using an analogous procedure to Example 104, and optionally
performing a subsequent reductive methylation using a procedure similar to
Example 2 or by acyiation (e.g. using formic acid) followed by reduction (e.g. using
borane-THF).
Example 198 was prepared from the fluorosulfone D14 and the appropriate aniline
using an analogous procedure to Example 104, and performing a subsequent
reductive methylation using a procedure similar to Example 2 or by acyiation (e.g.
using formic acid) followed by reduction (e.g. using borane-THF).
Examples 199 and 201-203 were prepared from the fluorosulfone D29 and the
appropriate aniline using an analogous procedure to Example 104, and performing
a subsequent reductive methylation using a procedure similar to Example 2 or by
acyiation (e.g. using formic acid) followed by reduction (e.g. using borane-THF).
Example 200 was prepared from the fluorosuifone D30 and the appropriate aniline
using an analogous procedure to Example 104, and performing a subsequent
reductive methylation using a procedure similar to Example 2 or by acyiation (e.g.
using formic acid) followed by reduction (e.g. using borane-THF).
Products were isolated as either the free bases or hydrochloride salts. All 1H NMR
are consistent with the structures shown.
A solution of i4-(8-methoxy-3-methyl-2,3,4,5-tetrahydro-1-H-3-benzazepine-7-sulfonyl)-
phenylj-methanol D12 (0.12 g), 4-chlorophenol (0.042 g), triphenyl phosphine (0.087 g in
tetrahydrofuran (5 ml_) was treated with diisopropyl azodicarboxylate (0.066 g). The
solution was stirred for 18 hour then the solvent was evaporated and the residue was
purified by column chromatography on silica using 0-10% methanol (containing 0.5%
aqueous ammonia)~dichioromethane to give the title compound E107, which was
converted to the hydrochloride salt. 1H NMR: 5 CDC\^ 2.36 (3H, s), 2.55 (4H, m). 2.94
(4H, m), 3.73 (3H, s). 5.08 (2H, s) 6.64 (1H, s). 6.87 (2H, d), 7.22 (2H. d), 7.50 (2H, d)
7.84 (1H, s) 7.98 (2H, d). Mass Spectrum MH*472
Examples 108 and 110 were prepared from D12 and the appropriate phenol using
an analogous procedure to Example 107. Products were isolated as either the free
bases or hydrochloride salts. Ail 1H NMR are consistent with the structures shown.
Example 109
4-Chloro-pheny)-(4.{8-methoxy-3-methyl-2,3,4,5-tetrahydro-1H-3-benzazepine-7-
sulfonyl)-benzyl]-amine hydrochloride (109)
N—
A solution of 4-(8-melhoxy-3-methyl-2,3,4,5-tetrahydro-1-H-3-benzazepine-7-sulfonyl)-
benzaldehyde D11 (0.12 g), 4-chloroaniline (0.050 g), in 1,2-dichloroethane (5 ml) was
treated with sodium triacetoxyborohydride (0.25 g) The solution was stirred for 18 hour
then dilute sodium hydroxide was added. The organic layer was separated, the solvent
was evaporated and the residue was purified by column chromatography on silica using
0-10% methanol (containing 0.5% aqueous ammonia)-dichloromethane. The product was
then treated with hydrogen chloride in ether to give the title compound E109 as a white
solid. 1H NMR: 5 DMSQ 2.6 (3H, d), 3.0-3.3 (6H, m), 3.56 (2H, m), 3.58 (H, s) 4.35 (2H,
s), 6.51 (2H, d), 7.04 (2H, d), 7.08 (1H, s) 7.53 (3H, m) 7.84 (3H, m), 10.95 (1H, br).
Mass Spectrum MH*471.
Example 111
7-[4-{4-FJuorobenzyl)benzenesulfonyl]-8-methoxy-3-methyl-2,3,4,5-tetrahydro-1A/-3-
benzazepine (E111)
N —
To a stirred solution of bromide D13 (98 mg, 0.239 mmol, 1.0 eq) in dry tetrahydrofuran (1
mL) was added 4-fluorobenzyizinc chloride (0.72 ml 0.5M solution, in tetrahydrofuran,
0.358 mmol, 1.5 eq). The mixture was degassed with argon for 5 min. then Pd(PPh3)4 (14
mg, 0.012 mmol, 0.05 eq) added. The mixture was heated at 50°C under argon for 2 h
then allowed to cool to room temperature. The mixture was quenched with saturated
aqueous NHUCI solution (1 ml), diluted with water (10 ml) then extracted with ethyl
acetate ( 2 x 1 0 ml). The combined organic phase was washed sequentially with water
(10 mL) and brine (10 ml) then dried over MgS04 and evaporated to dryness. Purification
by Biotage chromatography, eluting with 1-5% MeOH-CH2CI2 containing 0.5% NH3
afforded the desired product as a solid, 63 mg (60%). MH*440. 1H NMR 5 (CDCI3) 2.36
(3H, s). 2.55 (4H, m), 2.93 (4H, m), 3.73 (3H, s), 3.99 (2H, s), 6.63 (1H, s), 6.95 (2H, t),
7.08 (2H, m), 7.23 (2H, m), 7.87 (3H, m).
r
Example 213 was prepared using analogous procedures to Example 111 using the
appropriate benzylzinc reagent and D13.
Example 212 was prepared using D14c following procedures similar to Descriptions
D4and D13 and Example E111.
Example 207 was prepared using analogous procedures to Example 111 using the
appropriate benzylzinc reagent and 028.
Example 115
7-[4-(3-Fluoro-benzyloxy)-benzenesulfonyl]-6-methoxy-1,2,3,4-tetrahydroisoquinoline
hydrochloride (E115)
To a solution of D21 (174 mg, 0.33 mmol) in 1,4-dioxan (2 mL) was added hydrochloric
acid (2 mL, 4M in 1,4-dioxan). The mixture was stirred overnight. Evaporation to dryness
followed by trituration with ether yielded the title compound E115 as a solid (105 mg). MH*
428. 1H NMR 5 (DMSO) 3.00-3.05 (2H, t), 3.31-3.37 (2H, t), 3.72 (3H, s), 4.29 (2H, s),
5.22 (2h, s), 7,03 (1H, s), 7.12-7.33 (5H, m), 7.38-7.52 (1H, m), 7.75-7.82 (2H, d), 7.88
(1H, s), 9.30(1 H.br.s).
Examples 112 -114 and Examples 116-127 were prepared from 020 and the
appropriate alcohol using analogous procedures to Description D21 and Example
115. Products were isolated as either the free bases or hydrochloride salts. All 1H
NMR are consistent with the structures shown.
Example 131
5-Methoxy-2-rnethyl-6-[4-{3-trifluoromethyl-benzyloxy)-benzenesulfonyl]-2,3-
dihydro-1 W-isoindole hydrochloride (E131)
To a solution of 3-(trifluoromethyl) benzyl alcohol (109 mg, 0.62 mmol) in dry
dimethylsulfoxide (2 mL) was added sodium hydride (17 mg, 0.43 mmol). The mixture was
stirred at room temperature for 1 hour before the addition of D27 (100 mg, 0.31 mmol).
The resulting mixture was heated at 60°C for 3 hours before allowing to cool and
partitioning between ethyl acetate and water. The organic layer was removed and dried
(MgSO4), purification by SCX, followed by chromatography on silica eluting with
dichloromethane up to 10% MeOH/NHa/dichloromethane yielded the title compound as a
solid (75 mg). The title compound was dissolved in dichloromethane and treated with 1M
HCI in ether, the solvents were removed and the residue triturated with ether to yield the
hydrochloride salt. MH* 478. 1H NMR 5 (CDCI3) 2.57 (3H, s), 3.73 (3H, s), 3.89 (4H, s),
5.14 (2H, s), 6.74 (1H, s), 6.95-7.05 (2H, d), 7.45-7.70 (4H, m). 7.85-7.96 (3H, m).
Examples 128-130 and Examples 132-143 were prepared from 027 and the
appropriate alcohol using an analogous procedure to Example 131. Products were
isolated as either the free bases or hydrochloride salts. All 1H NMR are consistent
with the structures shown.
Example 182
(2-Methoxy-benzyl)-[4-(8-methoxy-3-methyl-2,3,4,5-tetrahydro-1H-3-benzazepine-7-
sulfonyl)-phenyl]-amine (E182)
The title compound E182 was prepared from D14 in a manner similar to descriptions for
D9, D10 and example E88 using 2-methoxybenzaldehyde for the final coupling. MIT 481
Examples E183 and 184 were prepared from the fluoro compound D14 using
analogous procedures to Example E182.
Example E187 was prepared from E182 by performing a subsequent reductive
methylation using a procedure similar to Example 2 or by acylation (e.g. using
formic acid) followed by reduction (e.g. using borane-THF).
Examples E186-E196 were prepared from the appropriate 8-substituted
benzazepine e.g. 010 and the appropriate benzaldehyde followed by reductive
alkylation in a manner similar to E182 and E187.
Example 204
7-[4-{4-Chloro-phenoxymethyl)-benzenesulfonyl]-8-ethoxy-3-methyl-2,3,4,5-
tetrahydro-1 H-3-benzazepine (E204)
The title compound E204 was prepared from D14c in a manner similar to descriptions for
D4, D11 and D12 and example E109 using 4-chlorophenol for the final coupling. MH* 487
Examples 110 and 205 were prepared using analogous procedures to Example 183
using the appropriate phenol. Products were isolated as either the free bases or
hydrochloride salts. All 1H NMR are consistent with the structures shown.
Example 206
[4-{8-Ethoxy-3-methyl-2,3,4,5-tetrahydro-1H-3-benzazepine-7-sulfonyl)-benzyl]-(2-
methoxy-phenyl)-amine (E206)
Xo o
The title compound E206 was prepared from D14c in a manner similar to descriptions for
D4 and D11 and example E109 using 2-methoxyaniline for the final coupling. MH* 481.
Examples 214 and 215 were prepared using analogous procedures to Example 206
using the appropriate aniline and were methylated by performing a subsequent
reductive methylation using a similar procedure to Example 2 or by acylation (e.g.
using formic acid) followed by reduction (e.g. using borane-THF). Products were
isolated as either the free bases or hydrochloride salts. All 1H NMR are consistent
with the structures shown.
Example 208
{8-[4-(4-Fluoro-phenoxymethyl)-benzenesuJfonyl]-3-methyl-2,3,4,5-tetrahydro-1H-3-
benzazepin-7-yl}-dimethyl-amine(E208)
a) 4-{Dimethylamino-methyl-2,3,4,5-tetrahydro-1H-3-ben2azepine-7-sulfonyl)-
benzaldehyde
[8-(4-Bromo-benzenesulfonyl)-3-methyl-2,3,4,5-tetrahydro-1H-3-benzazepin-7-yl]-
dimethyl-amine (D28) (1.4 g, 3.4 mmol) was cooled to -78°C in tetrahydrofuran (20 ml)
under an argon atmosphere. n-Butyllithium (1.6 ml, 2.5M) was added dropwise and the
mixture stirred for 2 mins. Dimethylformamide (300 mg) was added and the mixture
allowed to warm to room temperature then saturated ammonium chloride solution (50 ml)
was added and the product extracted with ethyl acetate (2 x 50 ml). The organic layer
was evaporated and chromatography on silica eluting with 0-20% methanol/ethyl acetate
afforded the subtitled compound. MH+ 373.
b) [4-(Dlmethylamino-methyl-2,3,4,5-tetrahydro-1H-3-benzazepine-7-sulfonyl)-
phenylj-methanol
4-(8-Dimethylamino-3-methyl-2,3>4,5-tetrahydro-1H-3-benzazepine-7-sulfonyl)-
benzaldehyde (880 mg) was dissolved in methanol (10 ml) and sodium borohydride (98
mg) was added and the mixture stirred for 20 min. Aqueous work up with
dichloromethane (30 ml) and water (30 ml) and chromatography on silica eluting with 0-
10% methanol/dichloromethane afforded the subtitled compound (423 mg) MH* 375.
c) {8-[4-(4-Fluoro-phenoxymethyl)-benzenesulfonyl]-3-methyl-2,3,4,5-tetrahydro-1H-
3-benzazepin-7-yl}-dimethyl-amine
[4-(Dimethylamino-methyl-2,3,4,5-tetrahydro-1H-3-benzazepine-7-sulfonyl)-phenyl]-
methano! was converted to the title compound by using 4-fluorophenol and an analogous
procedure to Example E107 to give the title compound e208. MH* 469.
Examples 209-211 were prepared using analogous procedures to Example 208
using the appropriate phenol. Products were isolated as either the free bases or
hydrochloride salts. Ail 1H NMR are consistent with the structures shown.
Examples E216-E229 were prepared in the same manner as E109 and were
optionally methylated by performing a subsequent reductive methylation using a
similar procedure to Example 2 or by acylation (e.g. using formic acid) followed by
reduction (e.g. using borane-THF). Products were isolated as either the free bases
or hydrochloride salts. All 'H NMR are consistent with the structures shown.
Example 230
6-Ethoxy-7-[4-(4-fluoro-benzyloxy)-benzenesulfonyl]-1,2,3,4-tetrahydro-isoquinoline
hydrochloride (E230)
To a solution of 4-fluorobenzyl alcohol (169mg, 1.34mmol) in dry DMSO (1.2 mL) was
added NaH (45mg, 1.12mmol). The mixture was stirred at room temperature for 30
minutes before the addition of D31 (150mg, 0.45mmol). The mixture was stirred at 60°C
for one hour. The mixture was quenched with water and extracted with ethyl acetate. The
organic extracts were washed with brine, dried over sodium sulphate and evaporated to
dryness. Purification by SCX followed by chromatography on silica, eluting with 1 to 10%
MeOH/NH3 in dichloromethane. Conversion of the free base to the hydrochloride salt was
carried by dissolving the compound in dichloromethane and adding 1.05 equivalents HCI
in ether. Evaporation to dryness gave the title compound as a pale coloured solid (52mg).
MH+ 442. 1H NMR 8 (CDCI3) 1.25-1.37 (3H, t), 2.71-2.85 (2H, t), 3.07-3.17 (2H, t), 3.88-
4.07 (4H, m), 5.06 (2H, s), 6.53 (1H, s), 6.95-7.15 (6H, m), 7.34-7.45 (2H, m). 7.77 (1H,
s), 7.85-7.95 (2H, d).
Examples 231 and 232 were prepared using analogous procedures to Example 230
using the appropriate alcohol. Products were isolated as either the free bases or
hydrochloride salts. All 1H NMR are consistent with the structures shown.
Example 233
(3-Methoxy-benzyl)-[4-(6-mBthoxy-1,2,3,4-tetrahydro-isoquinoline-7-sulfonyl)-
phenyl]-methyl-amine hydrochloride (E233)
To a stirred solution of D32 (300mg, 0.98mmol) in THF (1.7mL) at -78°C was added
dropwise n-butyllithium (2.5M, 0.4mL, 1mmol). The mixture was stirred for 30 minutes at -
78°C after which time D18 (112mg, 0.33mmol) in THF (O.SmL) was added. The resulting
mixture was stirred at -78°C for 2 hours before quenching with acetic acid at -78°C. To the
quenched mixture water was added and the pH adjusted to pH 7 using saturated sodium
bicarbonate. Extraction with ethyl acetate followed by purification using chromatography
on silica, eluting with 3 to 15% MeOH/NH3 in dichloromethane. Conversion of the free
base to the hydrochloride salt was carried by dissolving the compound in dichloromethane
and adding 1.05 equivalents HCI in ether. Evaporation to dryness gave the title compound
E233 as a pale coloured solid (70mg). Mf-T 453. 'H NMR 8 (CDCI3) 2.73-2.83 (2H, t),
3.06-3.17 (5H, m), 3.70-3.75 (6H, m), 4.00 (2H, s), 4.56 (2H, s), 6.55-6.83 (6H, m), 7.17-
7.22 (1H,d), 7.73-7.81 (3H, m).
Examples 234-238 were prepared using analogous procedures to Example 233
using the appropriate aldehyde in D32. Products were isolated as either the free
bases or hydrochloride salts. All 1H NMR are consistent with the structures
shown.
Examples 239-242 were prepared using an analogous procedure to Example 233
using the appropriate arylbromide prepared according to 032. Products were
isolated as either the free bases or hydrochloride salts. All 1H NMR are consistent
with the structures shown.
Example 243
7-[4-{4-Chlorophenoxyrnethyl)benzenesulfonyl]-6-methoxy-1,2,3,4-
tetrahydroisoquinoiine hydrochloride salt (E243)
NH.HCI
To a stirred solution of D36 in dry 1,4-dioxan (3 ml) under argon at room temperature was
added 4M HCI in 1,4-ciioxan (2 ml). The mixture was stirred at room temperature for 16 h
then evaporated to dryness, affording the desired product E243 as a white solid (0.146 g,
100%). MH* 444. 1H NMR: 5 DMSO-d6 3.04 (2H, t), 3.34 (2H, m), 3.71 (3H, s). 4.30 (2H,
s), 5.22 (2H. s), 7.03 (3H, m), 7.33 (2H, d), 7.64 (2H, d), 7.89 (3H, m), 9.49 (2H, br.s).
Examples 244-247 were prepared using an analogous procedure to Example 243 by
using the appropriate phenols in Description 036. Products were isolated as either
the free bases or hydrochloride salts. All 1H NMR are consistent with the
structures shown.
Example 248
3-Methyl-7-{(4-(2-methoxybenzyloxy)-phenylsulfonyl}-9-phenyl-1,2,4,5-tetrahydro-3-
benzazepine (E248)
A solution of 2-methoxybenzyl alcohol (140mg, 1mmol) in DMSO (2ml) was treated with
sodium hydride (30mg, 60% in oil, 0.75mmol), and then 3-methyl-7-(4-
fluorophenylsulfonyl)-9-phenyl-1,2,4,5-tetrahydro-3-benzazepine (D37) (100mg,
0.25mmol) in more DMSO (1ml). After heating for 1h at 40°C, the solution was cooled
and the product was isolated using an SCX column, and subsequent chromatography on
silica, eluting with 0 to 10% methanol in dichloromethane containing 0.1M ammonia. The
title compound E248) was collected as the hydrochloride salt from diethyl ether giving a
white solid (65mg). MH* 514. 1 H NMR 5 (da-DMSO) 2.8 (3H, d), 3.0-3.6 (8H, m), 3.7 (3H,
s), 3.9 (3H, s), 5.2 (2H, s), 6.9 (1H, t), 7.0 (1H, d), 7.2 (2H, d). 7.3-7.5 (7H, m), 7.6 (1H, s),
7.9 (1H, s), and 8.1 (2H, d).
Examples 249-265 were prepared using an analogous procedure to Example 248 by
using the appropriate alcohols, phenols, amines and anilines and reacting with an
appropriately substituted D37 analogue. Products were isolated as either the free
bases or hydrochloride salts. All 1H NMR are consistent with the structures
shown.
Ml of the compounds listed below in Table 1 relate to compounds of formula (IA), (IB),
ID), (IJ), (IK) and (IM) wherein 2 represents -(CH2)rO-
(Table Remove)



CLAIMS
1. A compound of formula (I):
(I)
wherein
A and B represent the groups -(CH2)m- and -{CH2)n- respectively;
R1 represents hydrogen or Chalky;
R2 represents hydrogen, halogen, hydroxy, cyano, nitro, hydroxyC1^alkyl, trifluoromethyl,
trifluoromethoxy, Ct.«aikyl, C^alkoxy, Ci^fluoroalkoxy, -(CHj)pCMcycloalkyl, -(CH2)POC3.
ecycioalkyl, -COCt^alkyl, -SOzC^alkyl, -SOC^alkyl, -S-C^alkyl, -CO2Ci^alkyl, -
CO2NR5R', -SO2NRSRS, -{C,H2)PNRSR8, -(CH2)pNR5CORe, optionally substituted aryl ring,
optionally substituted heteroaryl ring or optionally substituted heterocyclyl ring;
R3 represents optionally substituted aryl ring or optionally substituted heteroaryl ring;
R4 represents hydrogen, hydroxy, Chalky), C^alkoxy, trifluoromethyl, trifluoromethoxy,
halogen, -OSO2CF3, -{CH2)pC3^cycloalkyl. -(CHzJqOd^lkyl or -(CH2)pOCMcycloalkyl;
R8 and R* each independently represent hydrogen, C, or other atoms to which they are attached, form an azacycloalkyi ring or an oxosubstituted
azacycloalkyl ring;
Z represents -{CHj^X- wherein the -(CHz),- group is attached to R3, or -X(CH2)r wherein
X is attached to R3, and wherein any of the -CH2- groups may be optionally substituted by
one or more Chalky! groups;
X represents oxygen, -NR7 or -CHr wherein the -CH2- group may be optionally
substituted by one or more C^alkyl groups;
R7 represents hydrogen or C^alkyl;
m and n independently represent an integer selected from 1 and 2;
p independently represents an integer selected from 0,1,2 and 3;
q independently represents an integer selected from 1,2 and 3;
r independently represents an integer selected from 0,1, and 2;
or a pharmaceutically acceptable salt or solvate thereof.
2. A compound of formula (!) according to claim 1 wherein R1 represents hydrogen or Ci.
4alkyl.
3. A compound of formula (I) according to claim 1 or daim 2 wherein R2 represents
hydrogen, halogen, d^aikyi, C^alkoxy, C^alkylthio or diCi^alkylamino.
4. A compound of fcrmuia (1) according to any of claims 1 to 3 wherein R3 represents
phenyl.
5. A compound of formula (i) according to any of claims 1 to 4 wherein R4 represents
hydrogen, Chalky! or CMa!koxy.
6. A compound of form u a (I) according to any of claims 1 to 5 wherein R5 and R8
independently represent hydrogen or
7. A compound of formula (I) which is
7-Ntethoxy-8-(3-phenoxy-benzenesulfonyl)-2,3,4,5-tetrahydro-1H-3-benza2epine;
7-Methoxy-3-methyl-8-{3-pnenoxy-benzenesulfonyl)-2,3l4,5-tetrahydro-1H-3-
benzazepine;
7-(3-Benzyloxypheny!sulfonyl)-2,3,4,5-tetrariydro-3-benzazepine;
7.[4-(4-Chloro-benz>'loxy}-!;snzenesulfonyl]-8-methoxy-3-methyl-2,3,4,5-tetrahydro-1H-3-
benzazepine;
(4-Fluoro-benzyl)-{4-(3-me[hoxy-3-methyl-2,3,4,5-tetrahydro-1W-3-benzazepine-7-
sulfonyl)-phenyl]-amine;
[4-(8-Methoxy-3-meihyl-2,3,4,5-tetrahydro-1A^-3-benzazepine-7-sulfonyl}-phenyl]-phenylamine;
7-[4-{4-Chloro-phenoxymeinyl)-benzenesulfonylJ-8-methoxy-3^methyl-213,4,5-tetrahydro-
1H-3-benzazepine;
4-Chloro-phenyH'*-(s-rne^noxy-3-rnethyl-2,3,4,5-tetrahydro-1H-3-benzazepine-7-
sulfonyl)-benzyl]-amine ;
7.[4-{4.Fluorobenzyi)ben2enesu!fonyl]-8-methoxy-3-methyl-2,3,4,5-tetrahydro-1H-3-
benzazepine;
7-[4-(3-Fluoro-benzyioxy)-benzenesulfonyl]-6-methoxy-1,2l3,4-tetrahydro-isoquinoliner
and
5-Methoxy-2-methyl-u-[4-(3-.rif!uoromethyl-benzyloxy)-benzenesulfonyl]-2,3-dihydro-1 Hisoindole;
(2-Methoxy-benzyl)-[*i-(3-,Tie(fioxy-3-methyl-2,3,4l5-tetrahydro-1H-3-benzazepine-7-
sulfonyl)-phenyfj-amir, c ;
7-[4-(4-Chloro-phenc)c/iTiethyi}-benzenesulfonyl]-8-ethoxy-3-methyl-2,3,4,5-tetrahydro-
1 H-3-benzazepine;
[4-{8-Ethoxy-3-methy!-2,3,4,5-ietrahydro-1H-3-benzazepine-7-sulfonyl)-benzyl]-(2-
methoxy-phenyl)-amine ;
{8-[4-(4-Fluoro-phenox)'me[| yl}-benzenesulfonyl]-3-methyl-2,3,4,5-tetrahydro-1H-3-
benzazepin-7-yl}-dimetir/i-arnine;
6-Ethoxy-7-[4-(4-fluoro-!3efuvloxy)-benzenesulfonyi]-1,2,3,4-tetrahydro-isoquinoline
hydrochloride;
(3-Methoxy-benzyl)-[4-{5-rr.ethoxy-1,2,3,4-tetrahydro-isoquinoline-7-sulfonyl)-phenyl]-
methyl-amine hydrochicride;
7-[4-(4-Chlorophenox7matriyi)banz8nesulfonyl]-6-methoxy-1I2,3l4-tetrahydroisoquinoline
hydrochloride salt; and
3-Methyl-7-{(4-(2-metho>r/benr/ioxy)-phenylsulfonyl}-9-phenyl-1,2,4,5-tetrahydro-3-
Denzazepine.
8. A pharmaceutical composition comprising a compound of formula (I) as claimed in any
of daims 1 to 7 or a pharmaceutically acceptable salt thereof and a pharmaceutically
acceptable carrier therefor.
9. A compound of formula (I) or a pharmaceutically acceptable salt or solvate thereof as
claimed in any of claims 1 to 7 for use in therapy.
10. A compound of formula (I) or a pharmaceutically acceptable salt or solvate thereof as
claimed in any of daims 1 to 7 for use in the treatment of a condition which requires
modulation of a dopamine receptor.
11. A compound of formula (!) or a pharmaceutically acceptable salt or solvate thereof as
claimed in any of claims 1 to 7 for use in the treatment of psychotic disorders, Parkinsons
disease, substance abuse, dyskinetic disorders, depression, bipolar disorder, anxiety,
cognitive impairment, eating disorders, obesity, sexual dysfunction, sleep disorders,
emesis, movement disorders, obsessive-compulsive disorders, amnesia, aggression,
autism, vertigo, dementia, circadian rhythm disorders, convulsions, epilepsy and gastric
motility disorders.
12. Use of a compound of formula (I) or a pharmaceutically acceptable salt or solvate
thereof as claimed in any of claims 1 to 7 in the manufacture of a medicament for the
treatment of a condition which requires modulation of a dopamine receptor.
13. Use of a compound of formula (I) or a pharmaceutically acceptable salt or solvate
thereof as claimed in any of claims 1 to 7 in the manufacture of a medicament foe the
treatment of psychotic disorders, Parkinsons disease, substance abuse, dyskinetic
disorders, depression, bipolar disorder, anxiety, cognitive impairment, eating disorders,
obesity, sexual dysfunction, sleep disorders, emesis, movement disorders, obsessivecompulsive
disorders, amnesia, aggression, autism, vertigo, dementia, circadian rhythm
disorders, convulsions, apiieosy and gastric motility disorders.
14. A method of treating a condition which requires modulation of a dopamine receptor,
which comprises administering to a mammal in need thereof an effective amount of a
compound of formula (i) or a pharmaceutically acceptable salt or solvate thereof as
claimed in any of claims 1 to 7.
15. A method of treating psychotic disorders, Parkinsons disease, substance abuse,
dyskinetic disorders, depression, bipolar disorder, anxiety, cognitive impairment, eating
disorders, obesity, sexual dysfunction, sleep disorders, emesis, movement disorders,
obsessive-compulsive disorders, amnesia, aggression, autism, vertigo, dementia,
circadian rhythm disorders, convulsions, epilepsy and gastric motility disorders, which
comprises administering to a mammal in need thereof an effective amount of a compound
of formula (I) or a pharmaceutically acceptable salt or solvate thereof as claimed in any of
claims 1 to 7.




Documents:

3689-delnp-2004-abstract.pdf

3689-delnp-2004-claims.pdf

3689-delnp-2004-correspondence-others.pdf

3689-delnp-2004-correspondence-po.pdf

3689-delnp-2004-description (complete).pdf

3689-delnp-2004-form-1.pdf

3689-delnp-2004-form-13.pdf

3689-delnp-2004-form-18.pdf

3689-delnp-2004-form-2.pdf

3689-delnp-2004-form-3.pdf

3689-delnp-2004-form-5.pdf

3689-delnp-2004-gpa.pdf

3689-delnp-2004-pct-101.pdf

3689-delnp-2004-pct-210.pdf

3689-delnp-2004-pct-304.pdf

3689-delnp-2004-pct-308.pdf


Patent Number 232005
Indian Patent Application Number 3689/DELNP/2004
PG Journal Number 13/2009
Publication Date 27-Mar-2009
Grant Date 14-Mar-2009
Date of Filing 23-Nov-2004
Name of Patentee GLAXO GROUP LIMITED
Applicant Address GLAXO WELLCOME HOUSE, BERKELEY AVENUE, GERRNFORD, MIDDLESEX UB6 0NN, U.K.
Inventors:
# Inventor's Name Inventor's Address
1 IAN THOMSON FORBES GLAXOSMITHKLINE, NEW FRONTIERS SCIENCE PARK SOUTH, THIRD AVENUE, HARLOW, ESSEX CM19 5AW, GREAT BRITAIN.
2 VINCENZO GARZYA GLAXOSMITHKLINE, NEW FRONTIERS SCIENCE PARK SOUTH, THIRD AVENUE, HARLOW, ESSEX CM19 5AW, GREAT BRITAIN.
3 ANDREW DERRICK GRIBBLE GLAXOSMITHKLINE, NEW FRONTIERS SCIENCE PARK SOUTH, THIRD AVENUE, HARLOW, ESSEX CM19 5AW, GREAT BRITAIN.
4 ANDREW H. PAYNE GLAXOSMITHKLINE, NEW FRONTIERS SCIENCE PARK SOUTH, THIRD AVENUE, HARLOW, ESSEX CM19 5AW, GREAT BRITAIN.
5 ANDREW LIGHTFOOT GLAXOSMITHKLINE, NEW FRONTIERS SCIENCE PARK SOUTH, THIRD AVENUE, HARLOW, ESSEX CM19 5AW, GREAT BRITAIN.
6 GRAHAM WALKER GLAXOSMITHKLINE, NEW FRONTIERS SCIENCE PARK SOUTH, THIRD AVENUE, HARLOW, ESSEX CM19 5AW, GREAT BRITAIN.
PCT International Classification Number C07D 209/44
PCT International Application Number PCT/EP2003/005727
PCT International Filing date 2003-05-28
PCT Conventions:
# PCT Application Number Date of Convention Priority Country
1 0212401.4 2002-05-29 U.K.
2 0230053.1 2002-12-23 U.K.