Patents by Inventor Jiban K. Chakrabarti
Jiban K. Chakrabarti has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 5627178Abstract: 2-Methyl-4-(4-methyl-1-piperazinyl)-10H-thieno-[2,3-b][1,5]benzodiazepine, or an acid salt thereof, has pharmaceutical properties, and is of particular use in the treatment of disorders of the central nervous system.Type: GrantFiled: February 13, 1995Date of Patent: May 6, 1997Assignee: Lilly Industries LimitedInventors: Jiban K. Chakrabarti, Terrence M. Hotten, David E. Tupper
-
Patent number: 5605897Abstract: Olanzapine, or an acid salt thereof, has pharmaceutical properties, and is of particular use in the treatment of disorders of the central nervous system.Type: GrantFiled: February 13, 1995Date of Patent: February 25, 1997Assignees: Eli Lilly and Company, Lilly Industries LimitedInventors: Charles M. Beasley, Jr., Jiban K. Chakrabarti, Terrence M. Hotten, David E. Tupper
-
Patent number: 5229382Abstract: 2-Methyl-10-(4-methyl-1-piperazinyl)-4H-thieno-[2,3-b][1,5]benzodiazepine, or an acid salt thereof, has pharmaceutical properties, and is of particular use in the treatment of disorders of the central nervous system.Type: GrantFiled: May 22, 1992Date of Patent: July 20, 1993Assignee: Lilly Industries LimitedInventors: Jiban K. Chakrabarti, Terrence M. Hotten, David E. Tupper
-
Patent number: 5051516Abstract: Pharmaceutical thiazolo-[1,5]benzodiazepines of the formula ##STR1## in which R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independently hydrogen, C.sub.1-4 alkyl, C.sub.2-4 alkenyl, halogen, C.sub.1-4 haloalkyl, nitro, C.sub.1-4 alkoxy, C.sub.1-4 haloalkoxy, C.sub.1-4 alkylthio or phenylsulphonyl; in which R.sup.5 is a group of the formula formula ##STR2## where R.sup.7 is hydrogen, C.sub.1-6 alkyl, C.sub.3-7 cycloalkyl C.sub.1-4 alkyl, benzyl or ZO--C.sub.2-6 alkyl where Z is hydrogen or an acyl group, R.sup.8 is hydrogen or C.sub.1-4 alkyl and n is 0 or 1, provided that when R.sup.7 is hydrogen n is 0; in which R.sup.6 is hydrogen, C.sub.1-10 alkyl, C.sub.3-7 cycloalkyl, C.sub.3-7 cycloalkyl C.sub.1-4 alkyl, C.sub.1-4 haloalkyl, C.sub.1-4 alkoxy or C.sub.1-4 alkylthio; and in which ##STR3## represents a thiazole ring selected from ##STR4## and acid addition salts thereof. The compounds have central nervous system activity.Type: GrantFiled: August 2, 1990Date of Patent: September 24, 1991Assignee: Lilly Industries LimitedInventors: Jiban K. Chakrabarti, Terrence M. Hotten
-
Patent number: 4542131Abstract: Compounds are described of the formula ##STR1## or an acid addition salt thereof; in which R.sup.1, R.sup.2, R.sup.3 and R.sup.4 independently represent hydrogen, C.sub.1-4 alkyl, C.sub.2-4 alkenyl, C.sub.3-7 cycloalkyl, C.sub.3-7 cycloalkyl C.sub.1-4 alkyl, halogen, C.sub.1-4 haloalkyl, C.sub.1-4 alkanoyl, nitro, amino, C.sub.2-4 acylamino, cyano, hydroxyl, C.sub.1-4 alkoxy, C.sub.1-4 alkylthio, C.sub.1-4 haloalkoxy or a group of the formula --SO.sub.2 N(R.sup.8).sub.2, --SO.sub.2 R.sup.8 or --SO.sub.3 R.sup.8 where R.sup.8 is C.sub.1-4 alkyl, C.sub.1-4 haloalkyl or optionally substituted phenyl; in which R.sup.5 is a group of the formula ##STR2## where R.sup.9 is hydrogen, C.sub.1-4 alkyl, C.sub.3-7 cycloalkyl, C.sub.3-7 cycloalkyl C.sub.1-4 alkyl, C.sub.1-4 haloalkyl, C.sub.2-4 alkenyl, C.sub.1-4 alkanoyl, benzyl, cyano or optionally substituted phenyl, where R.sup.10 is hydrogen, C.sub.1-4 alkyl or optionally substituted phenyl and where n is 0 or 1; in which R.sup.6 is hydrogen, C.sub.1-10 alkyl, C.sub.Type: GrantFiled: August 6, 1984Date of Patent: September 17, 1985Assignee: Lilly Industries LimitedInventors: Jiban K. Chakrabarti, Terrence M. Hotten
-
Patent number: 4492699Abstract: These are described compounds of formula (I) ##STR1## or an acid addition salt thereof; in which R.sup.1, R.sup.2, R.sup.3 and R.sup.4 independently represent hydrogen, C.sub.1-4 alkyl, C.sub.2-4 alkenyl, halogen, C.sub.1-4 haloalkyl, nitro, C.sub.1-4 alkoxy, C.sub.1-4 haloalkoxy, C.sub.1-4 alkylthio or phenylsulphonyl; in which R.sup.5 is a group of the formula ##STR2## where R.sup.7 is hydrogen or C.sub.1-6 alkyl, R.sup.8 is hydrogen or C.sub.1-4 alkyl and n is 0 or 1, provided that when R.sup.7 is hydrogen n is 0; and in which R.sup.6 is attached to the 1, 2 or 3 position of the triazole ring and is hydrogen, C.sub.1-10 alkyl, C.sub.3-7 cycloalkyl, C.sub.3-7 cycloalkyl C.sub.1-4 alkyl, phenyl, benzyl or acyl. These compounds are pharmaceutically active and are especially useful in the treatment of disorders of the central nervous system. They are prepared by reacting an amine of formula R.sup.Type: GrantFiled: October 13, 1983Date of Patent: January 8, 1985Assignee: Lilly Industries LimitedInventors: Jiban K. Chakrabarti, Terrence M. Hotten, David J. Steggles
-
Patent number: 4486591Abstract: Compounds are described of the formula ##STR1## or an acid addition salt thereof; in which R.sup.1, R.sup.2, R.sup.3 and R.sup.4 independently represent hydrogen, C.sub.1-4 alkyl, C.sub.2-4 alkenyl, C.sub.3-7 cycloalkyl, C.sub.3-7 cycloalkyl C.sub.1-4 alkyl, halogen, C.sub.1-4 haloalkyl, C.sub.1-4 alkanoyl, nitro, amino, C.sub.2-4 acylamino, cyano, hydroxyl, C.sub.1-4 alkoxy, C.sub.1-4 alkylthio, C.sub.1-4 haloalkoxy or a group of the formula -SO.sub.2 N(R.sup.8).sub.2, -SO.sub.2 R.sup.8 or -SO.sub.3 R.sup.8 where R.sup.8 is C.sub.1-4 alkyl, C.sub.1-4 haloalkyl or optionally substituted phenyl; in which R.sup.5 is a group of the formula ##STR2## where R.sup.9 is hydrogen, C.sub.1-4 alkyl, C.sub.3-7 cycloalkyl, C.sub.3-7 cycloalkyl C.sub.1-4 alkyl, C.sub.1-4 haloalkyl, C.sub.2-4 alkenyl, C.sub.1-4 alkanoyl, benzyl, cyano or optionally substituted phenyl, where R.sup.10 is hydrogen, C.sub.1-4 alkyl or optionally substituted phenyl and where n is 0 or 1; in which R.sup.6 is hydrogen, C.sub.1-10 alkyl, C.sub.Type: GrantFiled: September 29, 1982Date of Patent: December 4, 1984Assignee: Lilly Industries LimitedInventors: Jiban K. Chakrabarti, Terrence M. Hotten
-
Patent number: 4431589Abstract: These are described compounds of formula (I) ##STR1## or an acid addition salt thereof; in which R.sup.1, R.sup.2, R.sup.3 and R.sup.4 independently represent hydrogen, C.sub.1-4 alkyl, C.sub.2-4 alkenyl, halogen, C.sub.1-4 haloalkyl, nitro, C.sub.1-4 alkoxy, C.sub.1-4 haloalkoxy, C.sub.1-4 alkylthio or phenylsulphonyl; in which R.sup.5 is a group of the formula ##STR2## where R.sup.7 is hydrogen or C.sub.1-6 alkyl, R.sup.8 is hydrogen or C.sub.1-4 alkyl and n is 0 or 1, provided that when R.sup.7 is hydrogen n is 0; and in which R.sup.6 is attached to the 1, 2 or 3 position of the triazole ring and is hydrogen, C.sub.1-10 alkyl, C.sub.3-7 cycloalkyl, C.sub.3-7 cycloalkyl C.sub.1-4 alkyl, phenyl, benzyl or acyl. These compounds are pharmaceutically active and are especially useful in the treatment of disorders of the central nervous system. They are prepared by reacting an amine of formula R.sup.Type: GrantFiled: December 3, 1981Date of Patent: February 14, 1984Assignee: Lilly HouseInventors: Jiban K. Chakrabarti, Terrence M. Hotten, David J. Steggles
-
Patent number: 4404137Abstract: Compounds are described of the formula ##STR1## or an acid addition salt thereof; in which R.sup.1, R.sup.2, R.sup.3 and R.sup.4 independently represent hydrogen, C.sub.1-4 alkyl, C.sub.2-4 alkenyl, C.sub.3-7 cycloalkyl, C.sub.3-7 cycloalkyl C.sub.1-4 alkyl, halogen, C.sub.1-4 haloalkyl, C.sub.1-4 alkanoyl, nitro, amino, C.sub.2-4 acylamino, cyano, hydroxyl, C.sub.1-4 alkoxy, C.sub.1-4 alkylthio, C.sub.1-4 haloalkoxy or a group of the formula --SO.sub.2 N(R.sup.8).sub.2, --SO.sub.2 R.sup.8 or --SO.sub.3 R.sup.8 where R.sup.8 is C.sub.1-4 alkyl, C.sub.1-4 haloalkyl or optionally substituted phenyl; in which R.sup.5 is a group of the formula ##STR2## where R.sup.9 is hydrogen, C.sub.1-4 alkyl, C.sub.3-7 cycloalkyl, C.sub.3-7 cycloalkyl C.sub.1-4 alkyl, C.sub.1-4 haloalkyl, C.sub.2-4 alkenyl, C.sub.1-4 alkanoyl, benzyl, cyano or optionally substituted phenyl, where R.sup.10 is hydrogen, C.sub.1-4 alkyl or optionally substituted phenyl and where n is 0 or 1; in which R.sup.6 is hydrogen, C.sub.1-10 alkyl, C.sub.Type: GrantFiled: October 2, 1980Date of Patent: September 13, 1983Assignee: Lilly Industries LimitedInventors: Jiban K. Chakrabarti, Terrence M. Hotten
-
Patent number: 4172831Abstract: Thieno[1,5]benzodiazepines having useful CNS activity containing the novel tricyclic ring system: ##STR1## the 10-position being substituted by an amino, preferably a piperazino, group.Type: GrantFiled: April 13, 1977Date of Patent: October 30, 1979Assignee: Lilly Industries LimitedInventors: Jiban K. Chakrabarti, David E. Tupper
-
Patent number: 4027035Abstract: 2-Phenyl adamantane alkyl amines are useful as antidepressants and anti-Parkinsonism agents, and may be prepared by a Friedel Crafts synthesis involving reaction of benzene with corresponding 2-halogeno compounds.Type: GrantFiled: August 28, 1975Date of Patent: May 31, 1977Assignee: Eli Lilly and CompanyInventors: Colin H. Cashin, Jiban K. Chakrabarti, Stephen S. Szinai