Patents by Inventor Sukumar Sinha

Sukumar Sinha 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).

  • Process for the preparation of deoxycholic acid
    Patent number: 10858387
    Abstract: The present invention provides a process for preparation of deoxycholic acid or salt thereof; the process comprises the steps of reacting the compound of formula II to obtain a compound of formula III; the compound of formula III is converted to a compound of formula IV and the compound of formula IV is converted to deoxycholic acid. The present invention also provides a process for the purification of deoxycholic acid or salt thereof.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: December 8, 2020
    Assignee: GLENMARK LIFE SCIENCES LIMITED
    Inventors: Ranjeet Nair, Shekhar Bhaskar Bhirud, Nandkumar Gaikwad, Sharad R. Gore, Rajendra C. Jagdhane, Sandip Gadge, Sukumar Sinha
  • PROCESS FOR THE PREPARATION OF DEOXYCHOLIC ACID
    Publication number: 20200140478
    Abstract: The present invention provides a process for preparation of deoxycholic acid or salt thereof; the process comprises the steps of reacting the compound of formula II to obtain a compound of formula III; the compound of formula III is converted to a compound of formula IV and the compound of formula IV is converted to deoxycholic acid. The present invention also provides a process for the purification of deoxycholic acid or salt thereof.
    Type: Application
    Filed: May 21, 2018
    Publication date: May 7, 2020
    Inventors: Ranjeet Nair, Shekhar Bhasxar Bhirud, Nandkumar Gaikwad, Sharad R. Gore, Rajendra C. Jagdhane, Sandip Gadge, Sukumar Sinha
  • PROCESS FOR PREPARATION OF DACLATASVIR AND SALTS
    Publication number: 20190337932
    Abstract: The present invention relates to crystalline daclatasvir dihydrochloride hydrate and process for its preparation.
    Type: Application
    Filed: July 13, 2017
    Publication date: November 7, 2019
    Inventors: Prem Chand, Yogesh YADAV, Amit Anant THANEDAR, Mohammad A. KHAN, Ranjeet NAIR, Sukumar SINHA, Shekhar Bhaskar BHiRUD
  • Process for preparation of canagliflozin
    Patent number: 9695159
    Abstract: The present invention relates to a process for the preparation of canagliflozin and intermediates thereof.
    Type: Grant
    Filed: May 22, 2015
    Date of Patent: July 4, 2017
    Assignee: GLENMARK PHARMACEUTICALS LIMITED
    Inventors: Shekhar Bhaskar Bhirud, Samir Naik, Sachin Srivastava, Dinesh Deore, Sukumar Sinha
  • PROCESS FOR PREPARATION OF CANAGLIFLOZIN
    Publication number: 20170114051
    Abstract: The present invention relates to a process for the preparation of canagliflozin and intermediates thereof.
    Type: Application
    Filed: May 22, 2015
    Publication date: April 27, 2017
    Inventors: Shekar Bhaskar BHIRUD, Samir NAIK, Sachin SRIVASTAVA, Dinesh DEORE, Sukumar SINHA
  • Process for the preparation of ivacaftor and solvates thereof
    Patent number: 9550735
    Abstract: The present invention provides process for the preparation of ivacaftor and solvates thereof.
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: January 24, 2017
    Assignee: GLENMARK PHARMACEUTICALS LIMITED
    Inventors: Shekhar Bhaskar Bhirud, Samir Naik, Sachin Srivastava, Ramesh Santosh Badgujar, Sachin Lad, Sukumar Sinha, Mohammad Amjed Khan
  • Amides of 2-amino-4-arylthiazole compounds and their salts
    Patent number: 9458173
    Abstract: The present disclosure is directed to salts of N-{4-[2,4-difluoro-3-(trifluoromethyl)phenyl]-1,3-thiazol-2-yl}dimethyl-2,4-dioxo-1,2,3,4-tetrahydrothieno[2,3-d]pyrimidin-5-yl)acetamide and process for the preparation thereof (formula II).
    Type: Grant
    Filed: June 8, 2013
    Date of Patent: October 4, 2016
    Assignee: GLENMARK PHARMACEUTICALS S.A.
    Inventors: Suresh Mahadev Kadam, Abraham Thomas, Sukumar Sinha, Sukeerthi Kumar, Bipin Parsottam Kansagra, Sachin Gavhane, Sandeep Bandu Khandagale, Shailesh Pawase, Jayant Prakashrao Patil, Shailendra Bhadane, Bhavna Mishra, Rajesh Dwivedi
  • Amorphous and crystalline forms of aprepitant and processes for the preparation thereof
    Patent number: 9227958
    Abstract: An amorphous form of aprepitant and a process for its preparation is provided. Also provided are mixtures of polymorph Forms I and II of aprepitant and a process for the preparation thereof.
    Type: Grant
    Filed: February 2, 2007
    Date of Patent: January 5, 2016
    Assignee: Glenmark Pharmaceuticals Limited
    Inventors: Mangesh Shivram Sawant, Girish Dixit, Nitin Sharad Chandra Pradhan, Mubeen Ahmad Khan, Sukumar Sinha
  • PROCESS FOR THE PREPARATION OF IVACAFTOR AND SOLVATES THEREOF
    Publication number: 20150376134
    Abstract: The present invention provides process for the preparation of ivacaftor and solvates thereof.
    Type: Application
    Filed: January 30, 2014
    Publication date: December 31, 2015
    Applicant: Glenmark Pharmaceuticals Limited
    Inventors: Shekhar Bhaskar BHIRUD, Samir NAIK, Sachin SRIVASTAVA, Ramesh Santosh BADGUJAR, Sachin LAD, Sukumar SINHA, Mohammad Amjed KHAN
  • AMIDES OF 2-AMINO-4-ARYLTHIAZOLE COMPOUNDS AND THEIR SALTS
    Publication number: 20150111038
    Abstract: The present disclosure is directed to salts of N-{4-[2,4-difluoro-3-(trifluoromethyl)phenyl]-1,3-thiazol-2-yl}dimethyl-2,4-dioxo-1,2,3,4-tetrahydrothieno[2,3-d]pyrimidin-5-yl)acetamide and process for the preparation thereof (formula II).
    Type: Application
    Filed: June 8, 2013
    Publication date: April 23, 2015
    Applicant: GLENMARK PHARMACEUTICALS S.A.
    Inventors: Suresh Mahadev Kadam, Abraham Thomas, Sukumar Sinha, Sukeerthi Kumar, Bipin Parsottam Kansagra, Sachin Gavhane, Sandeep Bandu Khandagale, Shailesh Pawase, Jayant Prakashrao Patil, Shailendra Bhadane, Bhavna Mishra, Rajesh Dwivedi
  • Process for the preparation of lasofoxifene tartrate
    Patent number: 8937188
    Abstract: A solid crystalline form of 1-(2-[4-(6-methoxy-3,4-dihydronaphthalene-1-y) phenoxy]ethyl)pyrrolidine, and a preparing process thereof are provided. The aforesaid compound is a key intermediate in the synthesis of lasofoxifene. A process for preparing lasofoxifene, a process for purifying lasofoxifene tartrate, and a crystalline form of lasofoxifene tartrate are also provided.
    Type: Grant
    Filed: April 27, 2010
    Date of Patent: January 20, 2015
    Assignee: Glenmark Generics Ltd.
    Inventors: Mubeen Ahmed Khan, Nikhil Rasiklal Trivedi, Nagan Nirmalan Kandasamy, Dayaghan Gangadhar Patil, Vipin Kumar Pandey, Sukumar Sinha
  • Fosaprepitant dimeglumine intermediate, neutral fosaprepitant, and amorphous fosaprepitant dimeglumine and processes for their preparations
    Patent number: 8623844
    Abstract: The present invention generally relates to a process for the preparation of fosaprepitant dimeglumine intermediate and its use in the preparation of fosaprepitant dimeglumine; to a neutral form of fosaprepitant in a solid state and processes for the preparation thereof; and to a stable amorphous fosaprepitant dimeglumine, having a stability at temperatures of about 2° C. to about 8° C. and at a relative humidity below at least 60%; and a process for the preparation thereof.
    Type: Grant
    Filed: July 17, 2009
    Date of Patent: January 7, 2014
    Inventors: Navin Ganesh Bhatt, Nikhil Rasiklal Trivedi, Mahesh Khedekar, Sukumar Sinha, Mubeen Ahmed Khan, Ramjilal Yadav
  • Polymorphic form of lercanidipine hydrochloride and process for the preparation thereof
    Patent number: 8097729
    Abstract: Processes for the purification of lercanidipine hydrochloride are provided which uses a binary system of an alcohol-containing solvent such as methanol and an aliphatic ester-containing solvent such as isopropyl acetate. Processes for the preparation of substantially amorphous lercanidipine hydrochloride are also provided. Also provided is lercanidipine hydrochloride substantially in polymorph form V.
    Type: Grant
    Filed: September 18, 2006
    Date of Patent: January 17, 2012
    Assignee: Glenmark Generics Ltd.
    Inventors: Mangesh Shivram Sawant, Maloyesh Mathuresh Biswas, Mubeen Ahmed Khan, Sukumar Sinha, Nitin Sharad Chandra Pradhan
  • FOSAPREPITANT DIMEGLUMINE INTERMEDIATE, NEUTRAL FOSAPREPITANT, AND AMORPHOUS FOSAPREPITANT DIMEGLUMINE AND PROCESSES FOR THEIR PREPARATIONS
    Publication number: 20110130366
    Abstract: The present invention generally relates to a process for the preparation of fosaprepitant dimeglumine intermediate and its use in the preparation of fosaprepitant dimeglumine; to a neutral form of fosaprepitant in a solid state and processes for the preparation thereof; and to a stable amorphous fosaprepitant dimeglumine, having a stability at temperatures of about 2° C. to about 8° C. and at a relative humidity below at least 60%; and a process for the preparation thereof.
    Type: Application
    Filed: July 17, 2009
    Publication date: June 2, 2011
    Applicant: GLENMARK GENERICS LMITED
    Inventors: Navin Ganesh Bhatt, Nikhil Rasiklal Trivedi, Mahesh Khedekar, Sukumar Sinha, Mubeen Ahmed Khan, Ramjilal Yadav
  • Polymorphic Form of Lercanidipine Hydrochloride and Process for the Preparation Thereof
    Publication number: 20090221833
    Abstract: Processes for the purification of lercanidipine hydrochloride are provided which uses a binary system of an alcohol-containing solvent such as methanol and an aliphatic ester-containing solvent such as isopropyl acetate. Processes for the preparation of substantially amorphous lercanidipine hydrochloride are also provided. Also provided is lercanidipine hydrochloride substantially in polymorph form V.
    Type: Application
    Filed: September 18, 2006
    Publication date: September 3, 2009
    Inventors: Mangesh Shivram Sawant, Maloyesh Mathuresh Biswas, Mubeen Ahmed Khan, Sukumar Sinha, Nitin Sharad Chandra Pradhan
  • Amorphous and Crystalline Forms of Aprepitant and Processes for the Preparation Thereof
    Publication number: 20090192161
    Abstract: An amorphous form of aprepitant and a process for its preparation is provided. Also provided are mixtures of polymorph Forms I and II of aprepitant and a process for the preparation thereof.
    Type: Application
    Filed: February 2, 2007
    Publication date: July 30, 2009
    Inventors: Mangesh Shivram Sawant, Girish Dixit, Nitin Sharad Chandra Pradhan, Mubeen Ahmad Khan, Sukumar Sinha