Patents by Inventor Saibal Kumar Das

Saibal Kumar Das 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: 8080668
    Abstract: The present application provides novel thiazole derivatives that are useful as activators of Adenosine 5?-Monophosphate-Activated Protein Kinase and pharmaceutical compositions containing such compounds.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: December 20, 2011
    Assignees: Dr. Reddy's Laboratories Limited, Dr. Reddy's Laboratories, Inc.
    Inventors: Vijay Kumar Potluri, Saibal Kumar Das, Pradip Kumar Sasmal, Javed Iqbal, Parimal Misra, Ranjan Chakrabarti, Rashmi Talwar
  • Publication number: 20110105748
    Abstract: The present invention relates to novel propionic acid derivatives. More particularly, the present invention relates to beta-phenyl alpha-oxysubstituted propionic acids of the general formula (I). The present invention also relates to processes for the preparation of compounds of the formula (I) and their use in the preparation of compounds of formula (II).
    Type: Application
    Filed: October 15, 2002
    Publication date: May 5, 2011
    Inventors: Debnath Bhuniya, Saibal Kumar Das, Gurram Ranga Madhavan, Javed Iqbal, Ranjan Chakrabarti, Sankar Mohan, Mohan Chander
  • Patent number: 7598293
    Abstract: The present invention relates to novel antidiabetic, hypolipidemic, antiobesity and hypocholesterolemic compounds of formula (I), their derivatives, their analogs, their tautomeric forms, their stereoisomers, their polymorphs, their pharmaceutically acceptable salts, their pharmaceutically acceptable solvates and pharmaceutically acceptable compositions containing them.
    Type: Grant
    Filed: February 13, 2007
    Date of Patent: October 6, 2009
    Assignee: Dr. Reddy's Laboratories, Inc.
    Inventors: Bhuniya Debnath, Saibal Kumar Das, Gurram Ranga Madhaven, Javed Iqbal, Ranjan Chakrabarti, Reeba Kannimel Vikramadithyan
  • Publication number: 20080221088
    Abstract: The present application provides novel thiazole derivatives that are useful as activators of Adenosine 5?-Monophosphate-Activated Protein Kinase and pharmaceutical compositions containing such compounds.
    Type: Application
    Filed: June 23, 2006
    Publication date: September 11, 2008
    Inventors: Vijay Kumar Potluri, Saibal Kumar Das, Pradip Kumar Sasmal, Javed Iqbal, Parimal Misra, Ranjan Chakrabarti, Rashmi Talwar
  • Publication number: 20080114005
    Abstract: There are provided derivatives having PPAR agonist activity. The derivatives include compounds and/or their pharmaceutically acceptable salts; the compounds having the formula (I) wherein A has the structure (II) or (III); X is chosen from —CH2—, —O—, —NH—, and —S—; Y is chosen from —O—, —NH—, and —S—; Z, which may be located in any position of substitution, is hydrogen or halogen; R1 and R2, which may be the same or different, are independently chosen from hydrogen and C1-C8 alkyl, or R1 and R2 together form a carbocyclic ring having from 4 to 6 carbon atoms; R3 is chosen from hydrogen and C1-C8 alkyl; R4, R5, and R6, which may be the same or different, are independently chosen from hydrogen and C1-C8 alkyl; and n is 1 to 6. Various embodiments and variants are provided.
    Type: Application
    Filed: September 6, 2005
    Publication date: May 15, 2008
    Applicants: Dr. Reddy's Laboratories Limited, Dr. Reddy's Laboratories, Inc.
    Inventors: Saibal Kumar Das, Sunil Kumar Singh, Gurram Ranga Madhavan, Debnath Bhuniya, Javed Iqbal, Sudhir Kumar Sharma, Ranjan Chakrabarti
  • Patent number: 7365064
    Abstract: The present invention relates to novel antidiabetic, hypolipidemic, antiobesity and hypocholesterolemic compounds of formula (I) their derivatives, their analogs, their tautomeric forms, their stereoisomers, their polymorphs, their pharmaceutically acceptable salts, their pharmaceutically acceptable solvates and pharmaceutically acceptable compositions containing them, to a process for preparing such compounds. More particularly, the present invention relates to novel alkyl carboxylic acids of the general, their derivatives, their analogs, their tautomeric forms, their stereoisomers, their polymorphs, their pharmaceutically acceptable salts, their pharmaceutically acceptable solvates and pharmaceutically acceptable compositions containing them, to a process for preparing such compounds.
    Type: Grant
    Filed: October 15, 2002
    Date of Patent: April 29, 2008
    Assignees: Dr. Reddy's Laboratories Limited, Dr. Reddy's Laboratories, Inc.
    Inventors: Debnath Bhuniya, Saibal Kumar Das, Gurram Ranga Madhavan, Javed Iqbal, Ranjan Chakrabarti
  • Patent number: 7348334
    Abstract: The present invention relates to novel hypolipidemic, antihyperglycemic compounds, their derivatives, their analogs, their tautomeric forms, their stereoisomers, their polymorphs, their pharmaceutically acceptable salts, their pharmaceutically acceptable solvates and pharmaceutically acceptable compositions containing them. More particularly, the present invention relates to novel ?-aryl-?-oxysubstituted alkylcarboxylic acids of the general formula (I), their derivatives, their analogs, their tautomeric forms, their stereoisomers, their polymorphs, their pharmaceutically acceptable salts, their pharmaceutically acceptable solvates and pharmaceutically acceptable compositions containing them.
    Type: Grant
    Filed: April 8, 2002
    Date of Patent: March 25, 2008
    Assignee: Dr. Reddy's Laboratories Limited
    Inventors: Javed Iqbal, Gurram Ranga Madhavan, Saibal Kumar Das, Debnath Bhunia, Ranjan Chakrabarti, Ramanujam Rajagopalan
  • Patent number: 7314889
    Abstract: The present invention relates to novel antidiabetic, hypolipidemic, antiobesity and hypocholesterolemic compounds of formula (I), their derivatives, their analogs, their tautomeric forms, their stereoisomers, their polymorphs, their pharmaceutically acceptable salts, their pharmaceutically acceptable solvates and pharmaceutically acceptable compositions containing them.
    Type: Grant
    Filed: November 27, 2002
    Date of Patent: January 1, 2008
    Assignees: Dr. Reddy's Laboratories, Inc., Dr. Reddy's Laboratories Limited
    Inventors: Bhuniya Debnath, Saibal Kumar Das, Gurram Ranga Madhavan, Javed Iqbal, Ranjan Chakrabarti, Reeba Kannimel Vikramadithyan
  • Publication number: 20030229083
    Abstract: The present invention relates to novel antidiabetic, hypolipidemic, antiobesity and hypocholesterolemic compounds of formula (I), 1
    Type: Application
    Filed: November 27, 2002
    Publication date: December 11, 2003
    Applicant: DR. REDDY'S LABORATORIES LIMITED
    Inventors: Bhuniya Debnath, Saibal Kumar Das, Gurram Ranga Madhavan, Javed Iqbal, Ranjan Chakrabarti, Reeba Kannimel Vikramadithyan
  • Publication number: 20030013729
    Abstract: The present invention relates to novel hypolipidemic, antihyperglycemic compounds, their derivatives, their analogs, their tautomeric forms, their stereoisomers, their polymorphs, their pharmaceutically acceptable salts, their pharmaceutically acceptable solvates and pharmaceutically acceptable compositions containing them. More particularly, the present invention relates to novel &bgr;-aryl-&agr;-oxysubstituted alkylcarboxylic acids of the general formula (I), their derivatives, their analogs, their tautomeric forms, their stereoisomers, their polymorphs, their pharmaceutically acceptable salts, their pharmaceutically acceptable solvates and pharmaceutically acceptable compositions containing them.
    Type: Application
    Filed: April 8, 2002
    Publication date: January 16, 2003
    Applicant: DR. REDDY'S LABORATORIES LTD.
    Inventors: Javed Iqbal, Gurram Ranga Madhavan, Saibal Kumar Das, Debnath Bhunia, Ranjan Chakrabarti, Ramanujam Rajagopalan
  • Patent number: 6444816
    Abstract: The present invention relates to novel antiobesity and hypocholesterolemic compounds, their derivatives, their analogs, their tautomeric forms, their stereoisomers, their polymorphs, their pharmaceutically acceptable salts, their pharmaceutically acceptable solvates and pharmaceutically acceptable compositions containing them. More particularly, the present invention relates to novel &bgr;-aryl-&agr;-oxysubstituted alkylcarboxylic acids of the general formula (I), their derivatives, their analogs, their tautomeric forms, their stereoisomers, their polymorphs, their pharmaceutically acceptable salts, their pharmaceutically acceptable solvates and pharmaceutically acceptable compositions containing them.
    Type: Grant
    Filed: February 18, 2000
    Date of Patent: September 3, 2002
    Assignees: Dr. Reddy's Research Foundation, Reddy Cheminor, Inc.
    Inventors: Saibal Kumar Das, Papi Reddy Purma, Venkateswarlu Akella, Rajagopalan Ramanujam, Ranjan Chakrabarti, Vidya Bhushan Lohray, Braj Bhushan Lohray, Rao Bheema Paraselli