Patents by Inventor Jagadish C. Sircar

Jagadish C. Sircar 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).

  • 4,9-Dihydro-9-oxo-N-1H-tetrazol-5-yl-pyrazolo[5,1-b]-quinazolin e-2-carboxamides and antiallergic compositions and methods using them
    Patent number: 4247555
    Abstract: Certain 4,9-dihydro-9-oxo-N-1H-tetrazol-5-yl-pyrazolo[5,1-b]quinazoline-2-carboxam ides are disclosed. These compounds prevent the allergic response in mammals.
    Type: Grant
    Filed: January 11, 1980
    Date of Patent: January 27, 1981
    Assignee: Warner-Lambert Company
    Inventors: Jagadish C. Sircar, Thomas Capiris
  • Amides of 4-hydroxy-6H-thieno[2,3-b]thiopyran-5-carboxylic acid-7,7-dioxide
    Patent number: 4154734
    Abstract: This invention relates to novel amides of 4-hydroxy-6H-thieno[2,3-b]thiopyran-5-carboxylic acid-7,7-dioxide having the Formula I: ##STR1## wherein R.sub.1 is hydrogen, halogen or lower alkyl; R.sub.2 is hydrogen, lower alkyl or aryl; Ar is aryl or heterocyclic; to the pharmaceutically acceptable salts thereof; and to processes for their preparation. The compounds of this invention exhibit antiinflammatory activity.
    Type: Grant
    Filed: December 27, 1977
    Date of Patent: May 15, 1979
    Assignee: Warner-Lambert Company
    Inventors: Jagadish C. Sircar, Stephen J. Kesten, Harold Zinnes
  • Amides of 4-hydroxy-6H-thieno[2,3-b]thiopyran-5-carboxylic acid-7,7-dioxide and process for the preparation thereof
    Patent number: 4134897
    Abstract: This invention relates to novel amides of 4-hydroxy-6H-thieno[2,3-b]thiopyran-5-carboxylic acid-7,7-dioxide having the Formula I: ##STR1## wherein R.sub.1 is hydrogen, halogen or lower alkyl; R.sub.2 is hydrogen, lower alkyl or aryl; Ar is aryl or heterocyclic; to the pharmaceutically acceptable salts thereof; and to processes for their preparation. The compounds of this invention exhibit antiinflammatory activity.
    Type: Grant
    Filed: December 27, 1977
    Date of Patent: January 16, 1979
    Assignee: Warner-Lambert Company
    Inventors: Jagadish C. Sircar, Stephen J. Kesten, Harold Zinnes
  • 5,6-Dihydro-4-oxo-4H-thieno[2,3-b]thiopyran-5-carboxamides, and process for the preparation thereof
    Patent number: 4134896
    Abstract: This invention relates to 5,6-dihydro-4-oxo-4H-thieno[2,3-b]thiopyran-5-carboxamides of the Formula I: ##STR1## wherein R.sub.1 is hydrogen, halogen or lower alkyl; R.sub.2 is hydrogen, lower alkyl or aryl; and Ar is aryl or heterocyclic; their pharmaceutically acceptable salts and to processes for their preparation. The compounds of this invention exhibit antibacterial, antifungal and antiallergy activity.
    Type: Grant
    Filed: December 5, 1977
    Date of Patent: January 16, 1979
    Assignee: Warner-Lambert Company
    Inventors: Jagadish C. Sircar, Stephen J. Kesten, Harold Zinnes
  • 5,6-Dihydro-4-oxo-4H-thieno[2,3-b]thiopyran-5-carboxamides, and process for the preparation thereof
    Patent number: 4134900
    Abstract: This invention relates to 5,6-dihydro-4-oxo-4H-theino[2,3-b]thiopyran-5-carboxamides of the Formula I: ##STR1## wherein R.sub.1 is hydrogen, halogen or lower alkyl; R.sub.2 is hydrogen, lower alkyl or aryl; and Ar is aryl or heterocyclic; their pharmaceutically acceptable salts and to processes for their preparation. The compounds of this invention exhibit antibacterial, antifungal and antiallergy activity.
    Type: Grant
    Filed: December 5, 1977
    Date of Patent: January 16, 1979
    Assignee: Warner-Lambert Company
    Inventors: Jagadish C. Sircar, Stephen J. Kesten, Harold Zinnes
  • Isoxazol amides of 4-hydroxy-6H-thieno[2,3-b]thiopyran-5-carboxylic acid-7,7-dioxide
    Patent number: 4127585
    Abstract: This invention relates to novel amides of 4-hydroxy-6H-thieno[2,3-b]thiopyran-5-carboxylic acid-7,7-dioxide having the Formula I: ##STR1## wherein R.sub.1 is hydrogen, halogen or lower alkyl; R.sub.2 is hydrogen, lower alkyl or aryl; Ar is aryl or heterocyclic; to the pharmaceutically acceptable salts thereof; and to processes for their preparation. The compounds of this invention exhibit antiinflammatory activity.
    Type: Grant
    Filed: December 27, 1977
    Date of Patent: November 28, 1978
    Assignee: Warner-Lambert Company
    Inventors: Jagadish C. Sircar, Stephen J. Kesten, Harold Zinnes
  • N-Thiazolyl-5,6-dihydro-4-oxo-4H-thieno[2,3-b]thiopyran-5-carboxamides
    Patent number: 4098794
    Abstract: This invention relates to 5,6-dihydro-4-oxo-4H-thieno[2,3-b]thiopyran-5-carboxamides of the Formula I: ##STR1## wherein R.sub.1 is hydrogen, halogen or lower alkyl; R.sub.2 is hydrogen, lower alkyl or aryl; and Ar is aryl or heterocyclic; their pharmaceutically acceptable salts and to processes for their preparation. The compounds of this invention exhibit antibacterial, antifungal and antiallergy activity.
    Type: Grant
    Filed: December 7, 1977
    Date of Patent: July 4, 1978
    Assignee: Warner-Lambert Company
    Inventors: Jagadish C. Sircar, Stephen J. Kesten, Harold Zinnes
  • 5,6-Dihydro-4-oxo-4H-thieno?2,3-b!thiopyran-5-carboxamides
    Patent number: 4097441
    Abstract: This invention relates to 5,6-dihydro-4-oxo-4H-thieno?2,3-b!thiopyran-5-carboxamides of the Formula I: ##STR1## wherein R.sub.1 is hydrogen, halogen or lower alkyl; R.sub.2 is hydrogen, lower alkyl or aryl; and Ar is aryl or heterocyclic; their pharmaceutically acceptable salts and to processes for their preparation. The compounds of this invention exhibit antibacterial, antifungal and antiallergy activity.
    Type: Grant
    Filed: December 7, 1977
    Date of Patent: June 27, 1978
    Assignee: Warner-Lambert Company
    Inventors: Jagadish C. Sircar, Stephen J. Kesten, Harold Zinnes
  • 5,6-Dihydro-4-oxo-4H-thieno[2,3-b]thiopyran-5-carboxamides, and process for the preparation thereof
    Patent number: 4092325
    Abstract: This invention relates to 5,6-dihydro-4-oxo-4H-thieno[2,3-b]thiopyran-5-carboxamides of the Formula I: ##STR1## wherein R.sub.1 is hydrogen, halogen or lower alkyl; R.sub.2 is hydrogen, lower alkyl or aryl; and Ar is aryl or heterocyclic; their pharmaceutically acceptable salts and to processes for their preparation. The compounds of this invention exhibit antibacterial, antifungal and antiallergy activity.
    Type: Grant
    Filed: December 10, 1976
    Date of Patent: May 30, 1978
    Assignee: Warner-Lambert Company
    Inventors: Jagadish C. Sircar, Stephen J. Kesten, Harold Zinnes
  • Amides of 4-hydroxy-6H-thieno[2,3-b]thiopyran-5-carboxylic acid-7,7-dioxide
    Patent number: 4082757
    Abstract: This invention relates to novel amides of 4-hydroxy-6H-thieno[2,3-b]thiopyran-5-carboxylic acid-7,7-dioxide having the Formula I: ##STR1## wherein R.sub.1 is hydrogen, halogen or lower alkyl; R.sub.2 is hydrogen, lower alkyl or aryl; Ar is aryl or heterocyclic; to the pharmaceutically acceptable salts thereof; and to processes for their preparation. The compounds of this invention exhibit antiinflammatory activity.
    Type: Grant
    Filed: December 10, 1976
    Date of Patent: April 4, 1978
    Assignee: Warner-Lambert Company
    Inventors: Jagadish C. Sircar, Stephen J. Kesten, Harold Zinnes
  • Process for producing benzothiopyrans
    Patent number: 3966765
    Abstract: .beta.-Ketoacyl derivatives of 6-aminopenicillanic acid of the formula: ##SPC1##Are disclosed. In the above structure R.sup.1 is hydrogen, alkyl, halogen, alkoxy, cyano, trifluoromethyl and the like; Z is CHR.sup.2 or NR.sup.2 ; R.sup.2 is hydrogen, alkyl, aralkyl; M is an alkali or alkaline earth metal such as sodium, potassium, or calcium. These compounds are useful as anti-bacterials.
    Type: Grant
    Filed: October 11, 1974
    Date of Patent: June 29, 1976
    Assignee: Warner-Lambert Company
    Inventors: Jagadish C. Sircar, Harold Zinnes, John Shavel, Jr.
  • 2,3,4,5-Tetra hydro-5-oxo-1-benzothiepi N-4-carboxamide 1,1-dioxides
    Patent number: 3962261
    Abstract: Compounds of the formula: ##SPC1##Are disclosed. In the above formula, R.sub.1 is aryl such as benzene or a heterocycle such as pyridine, isoxazole, or thiazole. The aryl or heterocyclic group R.sub.1 is substituted or unsubstituted. R.sub.2 is hydrogen, lower alkyl, halogen, lower alkoxy, trifluoromethyl and the like.These compounds are useful as anti-inflammatory agents indicated in conditions such as rheumatoid arthritis.
    Type: Grant
    Filed: August 6, 1975
    Date of Patent: June 8, 1976
    Assignee: Warner-Lambert Company
    Inventors: Harold Zinnes, Jagadish C. Sircar