Patents by Inventor Ila Sircar

Ila 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).

  • Publication number: 20130289109
    Abstract: The present invention relates to a phenylalanine derivative of Formula (I) wherein X1 is a halogen atom, X2 is a halogen atom, Q is a CH2R— is a carboxyl group which may be esterified; or a pharmaceutically acceptable salt thereof.
    Type: Application
    Filed: July 3, 2013
    Publication date: October 31, 2013
    Inventors: Takayuki KAWAGUCHI, Sumihiro NOMURA, Mikiko TSUKIMOTO, Toshiyuki KUME, Ila SIRCAR
  • Patent number: 8501809
    Abstract: The present invention relates to a phenylalanine derivative of Formula (I) wherein X1 is a halogen atom, X2 is a halogen atom, Q is a CH2R— is a carboxyl group which may be esterified; or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: December 8, 2010
    Date of Patent: August 6, 2013
    Assignee: Mitsubishi Tanabe Pharma Corporation
    Inventors: Takayuki Kawaguchi, Sumihiro Nomura, Mikiko Tsukimoto, Toshiyuki Kume, Ila Sircar
  • Publication number: 20110077299
    Abstract: The present invention relates to a phenylalanine derivative of Formula (I) wherein X1 is a halogen atom, X2 is a halogen atom, Q is a CH2R— is a carboxyl group which may be esterified; or a pharmaceutically acceptable salt thereof.
    Type: Application
    Filed: December 8, 2010
    Publication date: March 31, 2011
    Inventors: Takayuki KAWAGUCHI, Sumihiro Nomura, Mikiko Tsukimoto, Toshiyuki Kume, Ila Sircar
  • Patent number: 7872151
    Abstract: The present invention relates to a phenylalanine derivative of Formula (I) wherein X1 is a halogen atom, X2 is a halogen atom, Q is a CH2R— is a carboxyl group which may be esterified; or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: January 7, 2010
    Date of Patent: January 18, 2011
    Assignee: Mitsubishi Tanabe Pharma Corporation
    Inventors: Takayuki Kawaguchi, Sumihiro Nomura, Mikiko Tsukimoto, Toshiyuki Kume, Ila Sircar
  • Publication number: 20100113820
    Abstract: The present invention relates to a phenylalanine derivative of Formula (I) wherein X1 is a halogen atom, X2 is a halogen atom, Q is a CH2R— is a carboxyl group which may be esterified; or a pharmaceutically acceptable salt thereof.
    Type: Application
    Filed: January 7, 2010
    Publication date: May 6, 2010
    Inventors: Takayuki KAWAGUCHI, Sumihiro NOMURA, Mikiko TSUKIMOTO, Toshiyuki KUME, Ila SIRCAR
  • Patent number: 7671090
    Abstract: The present invention relates to a phenylalanine derivative of Formula (I) wherein X1 is a halogen atom, X2 is a halogen atom, Q is a CH2R— is a carboxyl group which may be esterified; or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: October 7, 2008
    Date of Patent: March 2, 2010
    Assignee: Mitsubishi Tanabe Pharma Corporation
    Inventors: Takayuki Kawaguchi, Sumihiro Nomura, Mikiko Tsukimoto, Toshiyuki Kume, Ila Sircar
  • Publication number: 20090111879
    Abstract: The present invention relates to a phenylalanine derivative of Formula (I) wherein X1 is a halogen atom, X2 is a halogen atom, Q is a CH2R— is a carboxyl group which may be esterified; or a pharmaceutically acceptable salt thereof.
    Type: Application
    Filed: October 7, 2008
    Publication date: April 30, 2009
    Inventors: Takayuki KAWAGUCHI, Sumihiro Nomura, Mikiko Tsukimoto, Toshiyuki Kume, Ila Sircar
  • Patent number: 7456217
    Abstract: The present invention relates to a phenylalanine derivative of Formula (I) wherein X1 is a halogen atom, X2 is a halogen atom, Q is a CH2R— is a carboxyl group which may be esterified; or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: July 13, 2005
    Date of Patent: November 25, 2008
    Assignee: Mitsubishi Tanabe Pharma Corporation
    Inventors: Takayuki Kawaguchi, Sumihiro Nomura, Mikiko Tsukimoto, Toshiyuki Kume, Ila Sircar
  • Patent number: 7375128
    Abstract: The present invention relates to a compound of formula (I): wherein R is hydrogen atom, hydroxyl group or carbamoyl group, and n is 1 or 2, or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: February 6, 2003
    Date of Patent: May 20, 2008
    Assignee: Mitsubishi Tanabe Pharma Corporation
    Inventors: Ila Sircar, Marshall Morningstar, Masatoshi Kakushima, Hidefumi Kaji, Takayuki Kawaguchi, Toshiyuki Kume
  • Patent number: 7342012
    Abstract: The present invention relates to a compound of the following formula: or a pharmaceutically acceptable salt thereof. Also disclosed are compositions containing the compound and methods of preparing and using the compounds. The compounds of the invention are useful in treating ?L?2 adhesion mediated conditions in a mammal.
    Type: Grant
    Filed: March 3, 2005
    Date of Patent: March 11, 2008
    Assignee: Mitsubishi Tanabe Pharma Corporation
    Inventors: Ila Sircar, Paul Furth, Bradley R. Teegarden, Marshall Morningstar, Nicholas Smith, Ronald C. Griffith
  • Publication number: 20050282900
    Abstract: The present invention relates to a phenylalanine derivative of Formula (I) wherein X1 is a halogen atom, X2 is a halogen atom, Q is a CH2R— is a carboxyl group which may be esterified; or a pharmaceutically acceptable salt thereof.
    Type: Application
    Filed: July 13, 2005
    Publication date: December 22, 2005
    Inventors: Takayuki Kawaguchi, Sumihiro Nomura, Mikiko Tsukimoto, Toshiyuki Kume, Ila Sircar
  • Publication number: 20050148602
    Abstract: The present invention relates to a compound of the following formula: or a pharmaceutically acceptable salt thereof. Also disclosed are compositions containing the compound and methods of preparing and using the compounds. The compounds of the invention are useful in treating ?L?2 adhesion mediated conditions in a mammal.
    Type: Application
    Filed: March 3, 2005
    Publication date: July 7, 2005
    Inventors: Ila Sircar, Paul Furth, Bradley Teegarden, Marshall Morningstar, Nicholas Smith, Ronald Griffith
  • Patent number: 6897225
    Abstract: The present invention relates to a compound of the following formula: or a pharmaceutically acceptable salt thereof. Also disclosed are compositions containing the compound and methods of preparing and using the compounds. The compounds of the invention are useful in treating ?L?2 adhesion mediated conditions in a mammal.
    Type: Grant
    Filed: October 19, 2000
    Date of Patent: May 24, 2005
    Assignee: Tanabe Seiyaku Co., Ltd.
    Inventors: Ila Sircar, Marshall Morningstar, Paul Furth, Nicholas Smith, Bradley R. Teegarden, Ronald C. Griffith
  • Patent number: 6855843
    Abstract: The present invention relates to a pharmaceutical composition comprising as an active ingredient a compound of formula (I), wherein Ring A is an aromatic or a heterocyclic ring; Q is a bond, carbonyl, lower alkylene, lower alkenylene, —O— -(lower alkylene)-, etc.; n is 0, 1 or 2; Z is oxygen or sulfur; W is oxygen, sulfur, —CH?CH—, —NH— or —N?CH—; R1, R2 and R3 are the same or different and are hydrogen, halogen, hydroxyl, a substituted or unsubstituted lower alkyl gorup, a substituted or unsubstituted lower alkoxy group, a substituted or unsubstituted amino group, etc.; R4 is tetrazolyl, carboxyl group, amide or ester; R5 is hydrogen, nitro, amino, hydroxyl, lower alkanoyl, lower alkyl, etc.; R6 is selected from (a) a substituted or unsubstituted phenyl group, (b) a substituted or unsubstituted pyridyl group, (c) a substituted or unsubstituted thienyl group, (d) a substituted or unsubstituted benzofuranyl group, etc.; or a pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: November 4, 2002
    Date of Patent: February 15, 2005
    Assignee: Tanabe Seiyaku Co., Ltd.
    Inventors: Ila Sircar, Kristjan S. Gudmundsson, Richard Martin
  • Patent number: 6699888
    Abstract: The present invention relates to small molecules according to formula (I) that are potent inhibitors of &agr;L&bgr;2 mediated cell adhesion and which could be useful for the treatment of inflammatory diseases:
    Type: Grant
    Filed: January 27, 2003
    Date of Patent: March 2, 2004
    Assignee: Tanabe Seiyaku Co., Ltd.
    Inventors: Ila Sircar, Yun Feng Xie, Nicholas Smith, Paul S. Furth
  • Publication number: 20030225138
    Abstract: The present invention relates to small molecules according to formula (I) that are potent inhibitors of &agr;L&bgr;2 mediated cell adhesion and which could be useful for the treatment of inflammatory diseases: 1
    Type: Application
    Filed: January 27, 2003
    Publication date: December 4, 2003
    Inventors: Ila Sircar, Yun Feng Xie, Nicholas Smith, Paul S Furth
  • Publication number: 20030191118
    Abstract: The present invention relates to a pharmaceutical composition comprising as an active ingredient a compound of formula (I), wherein Ring A is an aromatic or a heterocyclic ring; Q is a bond, carbonyl, lower alkylene, lower alkenylene, —O— -(lower alkylene)-, etc.; n is 0, 1 or 2; Z is oxygen or sulfur; W is oxygen, sulfur, —CH═CH—, —NH— or —N═CH—; R1, R2 and R3 are the same or different and are hydrogen, halogen, hydroxyl, a substituted or unsubstituted lower alkyl gorup, a substituted or unsubstituted lower alkoxy group, a substituted or unsubstituted amino group, etc.; R4 is tetrazolyl, carboxyl group, amide or ester; R5 is hydrogen, nitro, amino, hydroxyl, lower alkanoyl, lower alkyl, etc.; R6 is selected from (a) a substituted or unsubstituted phenyl group, (b) a substituted or unsubstituted pyridyl group, (c) a substituted or unsubstituted thienyl group, (d) a substituted or unsubstituted benzofuranyl group, etc.
    Type: Application
    Filed: November 4, 2002
    Publication date: October 9, 2003
    Applicant: Tanabe Seiyaku Co., Ltd.
    Inventors: Ila Sircar, Kristjan S. Gudmundsson, Richard Martin
  • Patent number: 6521666
    Abstract: The present invention relates to a pharmaceutical composition comprising as an active ingredient a compound of formula (I), wherein Ring A is an aromatic or a heterocyclic ring; Q is a bond, carbonyl, lower alkylene, lower alkenylene, —O-(lower alkylene)-, etc.; n is 0, 1 or 2; Z is oxygen or sulfur, W is oxygen, sulfur, —CH═CH—, —NH— or —N═CH—; R1, R2 and R3 are the same or different and are hydrogen, halogen, hydroxyl, a substituted or unsubstituted lower alkyl group, a substituted or unsubstituted lower alkoxy group, a substituted or unsubstituted amino group, etc.; R4 is tetrazolyl, carboxyl group, amide or ester; R5 is hydrogen, nitro, amino, hydroxyl, lower alkanoyl, lower alkyl etc.; R6 is selected from (a) a substituted or unsubstituted phenyl group, (b) a substituted or unsubstituted pyridyl group, (c) a substituted or unsubstituted thienyl group, (d) a substituted or unsubstituted benzofuranyl group, etc.
    Type: Grant
    Filed: July 19, 2000
    Date of Patent: February 18, 2003
    Assignee: Tanabe Seiyaku Co., Ltd.
    Inventors: Ila Sircar, Kristjan S. Gudmundsson, Richard Martin
  • Patent number: 6380187
    Abstract: Disclosed is a novel class of thiazole, thiadiazole, and oxadiazole compounds which are substituted at their nuclear carbons by aromatic moieties. These compounds exhibit antifungal activity against a variety of fungi including strains which have proven to be resistant to treatment with known antifungal agents such as Fluconazole.
    Type: Grant
    Filed: December 5, 2000
    Date of Patent: April 30, 2002
    Inventors: Dingwei Tim Yu, Orest Taras Macina, Ila Sircar, Jagadish Chandra Sircar, Christopher Mark Riviello
  • Publication number: 20020002193
    Abstract: Disclosed is a novel class of thiazole, thiadiazole, and oxadiazole compounds which are substituted at their nuclear carbons by aromatic moieties. These compounds exhibit antifungal activity against a variety of fungi including strains which have proven to be resistant to treatment with known antifungal agents such as Fluconazole.
    Type: Application
    Filed: December 5, 2000
    Publication date: January 3, 2002
    Inventors: Dingwei Tim Yu, Orest Taras Macina, Ila Sircar, Jagadish Chandra Sircar, Christopher Mark Riviello