Patents by Inventor Abhijit Roychowdhury

Abhijit Roychowdhury 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: 20190031665
    Abstract: Present invention relates to novel heterocyclic compounds as indoleamine 2,3-dioxygenase (IDO) and/or tryptophan 2,3-dioxygenase (TDO) modulators. Compounds of the present invention inhibit tryptophan degradation by modulating IDO and/or TDO. The invention further relates to the process of their preparation, pharmaceutical composition and their use in modulating the activity of indoleamine 2,3-dioxygenase (IDO) and/or tryptophan 2,3-dioxygenase (TDO). The compounds of the invention can be used alone or in combination for the treatment of conditions that benefits from the inhibition of tryptophan degradation.
    Type: Application
    Filed: January 31, 2017
    Publication date: January 31, 2019
    Applicant: Emcure Pharmaceuticals Limited
    Inventors: Mukund Keshav GURJAR, Abhijit ROYCHOWDHURY, Tushar Pandurang KHALADKAR, Sangmeshwar Prabhakar SAWARGAVE, Ravindra Ashok JANRAO, Vijay Keshav KALHAPURE, Ganesh Devidas URUNKAR, Srinivas GULLAPALLI, Jayanarayan KULATHINGAL, Rammohan Reddy LEKKALA
  • Publication number: 20160354430
    Abstract: This invention relates to a method of treatment of cancer comprising administering compound of Formula (1) or derivatives or pharmaceutically acceptable salts thereof.
    Type: Application
    Filed: August 18, 2016
    Publication date: December 8, 2016
    Applicant: PIRAMAL ENTERPRISES LIMITED
    Inventors: Prabhu Dutt Mishra, Sreekumar Sankaranarayanan Eyyammadichiyl, Saji David GEORGE, Shailendra SONAWANE, Narayan Subhash CHAKOR, Abhijit ROYCHOWDHURY, Rajiv SHARMA
  • Patent number: 9475842
    Abstract: This invention relates to an isolated compound of Formula (1) or derivatives or pharmaceutically acceptable salts thereof. The invention also includes all isomeric and tautomeric forms of the compound of Formula (1) or the derivatives thereof. The present invention further relates to processes for the production of the compound of Formula (1) by fermentation of the fungal strain of Actinomycetes (PM0895172/MTCC 684), pharmaceutical compositions comprising the compound of Formula (1) as the active ingredient; and use of the compounds or composition containing them in the treatment of cancer.
    Type: Grant
    Filed: May 6, 2013
    Date of Patent: October 25, 2016
    Assignee: Piramal Enterprises Limited
    Inventors: Prabhu Dutt Mishra, Sreekumar Sankaranarayanan Eyyammadichiyl, Saji David George, Shailendra Sonawane, Narayan Subhash Chakor, Abhijit Roychowdhury, Rajiv Sharma
  • Patent number: 9433621
    Abstract: The present invention provides compounds of Formula (I): and tautomers, isomers, and esters of said compounds, and pharmaceutically acceptable salts, solvates, and prodrugs of said compounds, wherein each of R, R1, X, Y, Z, R2, R3, R4, R5, R6, R7, R8, R9, R18, R19 and n is selected independently and as defined herein. Compositions comprising such compounds are also provided. The compounds of the invention are effective as inhibitors of HCV, and are useful, alone and together with other therapeutic agents, in treating or preventing diseases or disorders such as viral infections and virus-related disorders.
    Type: Grant
    Filed: February 18, 2011
    Date of Patent: September 6, 2016
    Assignees: Merck Sharp & Dohme Corp., Southern Research Institute
    Inventors: Ashok Arasappan, F. George Njoroge, Cecil D. Kwong, Subramaniam Ananthan, Frank Bennett, Francisco Velazquez, Vinay M. Girijavallabhan, Yuhua Huang, Hollis S. Kezar, III, Joseph A. Maddry, Robert C. Reynolds, Abhijit Roychowdhury, Anita T. Fowler, John A. Secrist, III, Joseph A. Kozlowski, Bandarpalle B. Shankar, Ling Tong, Seong Heon Kim, Malcolm MacCoss, Srikanth Venkatraman, Vishal Verma
  • Publication number: 20150119394
    Abstract: The present invention relates to compounds that are capable of inhibiting, modulating and/or regulating Insulin-Like-Growth Factor I Receptor and Insulin Receptor. The compounds of the instant invention possess a core structure that comprises a sulfonyl indole moiety. The present invention is also related to the pharmaceutically acceptable salts, hydrates and stereoisomers of these compounds.
    Type: Application
    Filed: March 14, 2013
    Publication date: April 30, 2015
    Inventors: Abhijit Roychowdhury, Rajiv Sharma, Malcolm Mascarenhas, Chandrika B-Rao, Shashikant M. Patil, Sambhaji Chavan, Nitin Lad, Smriti Khanna, Christopher J. Dinsmore
  • Publication number: 20150080312
    Abstract: This invention relates to an isolated, compound of Formula (1) or derivatives or pharmaceutically acceptable salts thereof. The invention also includes all isomeric and tautomeric forms of the compound of Formula (1) or the derivatives thereof. The present invention further relates to processes for the production of the compound of Formula (1) by fermentation of the fungal strain of Actinomycetes (PM0895172/MTCC 684), pharmaceutical compositions comprising the compound of Formula (1) as the active ingredient; and use of the compounds or composition containing them in the treatment of cancer.
    Type: Application
    Filed: May 6, 2013
    Publication date: March 19, 2015
    Applicant: PIRAMAL ENTERPRISES LIMITED
    Inventors: Prabhu Dutt Mishra, Sreekumar Sankaranarayanan Eyyammadichiyl, Saji David George, Shailendra Sonawane, Narayan Subhash Chakor, Abhijit Roychowdhury, Rajiv Sharma
  • Publication number: 20140242027
    Abstract: The present invention provides compounds of Formula (I): and tautomers, isomers, and esters of said compounds, and pharmaceutically acceptable salts, solvates, and prodrugs of said compounds, wherein each of R, R1, X, Y, Z, R2, R3, R4, R5, R6, R7, R8, R9, R18, R19 and n is selected independently and as defined herein. Compositions comprising such compounds are also provided. The compounds of the invention are effective as inhibitors of HCV, and are useful, alone and together with other therapeutic agents, in treating or preventing diseases or disorders such as viral infections and virus-related disorders.
    Type: Application
    Filed: February 18, 2011
    Publication date: August 28, 2014
    Applicants: Southern Research Institute, Merck Sharp & Dohne Corp.
    Inventors: Ashok Arasappan, F. George Njoroge, Cecil D. Kwong, Subramaniam Ananthan, Frank Bennett, Francisco Velazquez, Vinay Girijavallabhan, Yuhua Huang, Hollis S. Kezer, Joseph Maddry, Robert C. REynold, Abhijit Roychowdhury, Anita T. Fowler, John A. Secrist, III, Ling Tong, Seong Heon Kim, Malcolm MacCoss, Srikanth Venkatraman, vishal Verma
  • Patent number: 8715638
    Abstract: The present invention provides compounds of Formula (A): (Chemical formula should be inserted here as it appears on abstract in paper form) (A) and tautomers, isomers, and esters of said compounds, and pharmaceutically acceptable salts, solvates, and prodrugs of said compounds, wherein wherein each of R, R1, X, Y, Z, R2, R3, R4, R5, R6, R7, R8, R9, R18, R19, R22, R23, and n is selected independently and as defined herein. Compositions comprising such compounds are also provided. The compounds of the invention are effective as inhibitors of HCV, and are useful, alone and together with other therapeutic agents, in treating or preventing diseases or disorders such as viral infections and virus-related disorders.
    Type: Grant
    Filed: August 19, 2009
    Date of Patent: May 6, 2014
    Assignees: Merck Sharp & Dohme Corp., Southern Research Institute
    Inventors: Cecil D. Kwong, F. George Njoroge, Subramaniam Ananthan, Jeremy Clark, Feng Geng, Hollis S. Kezar, III, Joseph A. Maddry, John J. Piwinski, Robert C. Reynolds, Abhijit Roychowdhury, John A. Secrist, III, Neng-Yang Shih
  • Patent number: 8697694
    Abstract: The present invention provides compounds of Formula (I): and tautomers, isomers, and esters of said compounds, and pharmaceutically acceptable salts, solvates, and prodrugs of said compounds, wherein each of R, R1, X, Y, Z, R2, R3, R4, R5, R6, R7, R8, R9, R18, R19 and n is selected independently and as defined herein. Compositions comprising such compounds are also provided. The compounds of the invention are effective as inhibitors of HCV, and are useful, alone and together with other therapeutic agents, in treating or preventing diseases or disorders such as viral infections and virus-related disorders.
    Type: Grant
    Filed: August 19, 2009
    Date of Patent: April 15, 2014
    Assignees: Merck Sharp & Dohme Corp., Southern Research Institute
    Inventors: Ashok Arasappan, F. George Njoroge, Cecil D. Kwong, Subramaniam Ananthan, Frank Bennett, Jeremy Clark, Hollis S. Kezar, III, Vinay M. Girijavallabhan, Yuhua Huang, Regina Huelgas, Joseph A. Maddry, John J. Piwinski, Robert C. Reynolds, Abhijit Roychowdhury, Anita T. Fowler, Feng Geng, John A. Secrist, III, Neng-Yang Shih, Vishal Verma, Francisco Velazquez, Srikanth Venkatraman
  • Publication number: 20140046059
    Abstract: The present invention relates to a process for the preparation of the compounds of formula (I) which are morpholino sulphonyl indole derivatives. The compounds of formula (I) are capable of inhibiting, modulating or regulating Insulin-Like-Growth Factor I Receptors or Insulin Receptors. The present invention also relates to the processes for preparation of the pharmaceutically acceptable salts of the compounds of formula (I).
    Type: Application
    Filed: April 19, 2012
    Publication date: February 13, 2014
    Applicant: PIRAMAL ENTERPRISES LIMITED
    Inventors: Malcolm Mascarenhas, Shashikant Patil, Ravindra Ashok Janrao, Abhijit Roychowdhury
  • Publication number: 20140045832
    Abstract: The present invention relates to compounds that are capable of inhibiting, modulating and/or regulating Insulin-Like-Growth Factor I Receptor and Insulin Receptor. The compounds of the instant invention possess a core structure that comprises a sulfonyl indole moiety. The present invention is also related to the pharmaceutically acceptable salts, hydrates and stereoisomers of these compounds.
    Type: Application
    Filed: April 19, 2012
    Publication date: February 13, 2014
    Applicants: PIRAMAL ENTERPRISES LIMITED, MERCK SHARP & DOHME CORP.
    Inventors: Sarala Balachandran, Christopher J. Dinsmore, Abhijit Roychowdhury, Rajiv Sharma, Ram Asrey Vishwakarma
  • Patent number: 8541434
    Abstract: The present invention provides compounds of Formula (I): and tautomers, isomers, and esters of said compounds, and pharmaceutically acceptable salts, solvates, and pro-drugs of said compounds, wherein each of R, R1, X, Y, Z, R2, R3, R4, R5, R6, R7, R8, R9, R18, R19 and n is selected independently and as defined herein. Compositions comprising such compounds are also provided. The compounds of the invention are effective as inhibitors of HCV, and are useful, alone and together with other therapeutic agents, in treating or preventing diseases or disorders such as viral infections and virus-related disorders.
    Type: Grant
    Filed: August 19, 2009
    Date of Patent: September 24, 2013
    Assignees: Merck Sharp & Dohme Corp., Southern Research Institute
    Inventors: Cecil D. Kwong, F. George Njoroge, Subramaniam Ananthan, Ashok Arasappan, Frank Bennett, Jeremy Clark, Anita T. Fowler, Feng Geng, Hollis S. Kezar, III, Joseph A. Maddry, John J. Piwinski, Robert C. Reynolds, Abhijit Roychowdhury, John A. Secrist, III, Neng-Yang Shih
  • Publication number: 20120107271
    Abstract: The present invention provides compounds of Formula (I): (Chemical formula should be inserted here as it appears on abstract in paper form) (I) and tautomers, isomers, and esters of said compounds, and pharmaceutically acceptable salts, solvates, and pro-drugs of said compounds, wherein each of R, R1, X, Y, Z, R2, R3, R4, R5, R6, R7, R8, R9, R18, R19 and n is selected independently and as defined herein. Compositions comprising such compounds are also provided. The compounds of the invention are effective as inhibitors of HCV, and are useful, alone and together with other therapeutic agents, in treating or preventing diseases or disorders such as viral infections and virus-related disorders.
    Type: Application
    Filed: August 19, 2009
    Publication date: May 3, 2012
    Inventors: Cecil D. Kwong, F. George Njoroge, Subramaniam Ananthan, Ashok Arasappan, Frank Bennett, Jeremy Clark, Anita T. Fowler, Feng Geng, Hollis S. Kezar, III, Joseph A. Maddry, John J. Piwinski, Robert C. Reynolds, Abhijit Roychowdhury, John A. Secrist, III, Neng-Yang Shih
  • Publication number: 20110318305
    Abstract: The present invention provides compounds of Formula (I): and tautomers, isomers, and esters of said compounds, and pharmaceutically acceptable salts, solvates, and prodrugs of said compounds, wherein each of R, R1, X, Y, Z, R2, R3, R4, R5, R6, R7, R8, R9, R18, R19 and n is selected independently and as defined herein. Compositions comprising such compounds are also provided. The compounds of the invention are effective as inhibitors of HCV, and are useful, alone and together with other therapeutic agents, in treating or preventing diseases or disorders such as viral infections and virus-related disorders.
    Type: Application
    Filed: August 19, 2009
    Publication date: December 29, 2011
    Inventors: Ashok Arasappan, F. George Njoroge, Cecil D. Kwong, Subramaniam Ananthan, Frank Bennett, Jeremy Clark, Hollis S. Kezar, III, Vinay M. Girijavallabhan, Yuhua Huang, Regina Huelgas, Joseph A. Maddry, John J. Piwinski, Robert C. Reynolds, Abhijit Roychowdhury, Anita T. Fowler, Feng Geng, John A. Secrist, III, Neng-Yang Shih, Vishal Verma, Francisco Velazquez, Srikanth Venkatraman
  • Publication number: 20110286965
    Abstract: The present invention provides compounds of Formula (A): (Chemical formula should be inserted here as it appears on abstract in paper form) (A) and tautomers, isomers, and esters of said compounds, and pharmaceutically acceptable salts, solvates, and prodrugs of said compounds, wherein wherein each of R, R1, X, Y, Z, R2, R3, R4, R5, R6, R7, R8, R9, R18, R19, R22, R23, and n is selected independently and as defined herein. Compositions comprising such compounds are also provided. The compounds of the invention are effective as inhibitors of HCV, and are useful, alone and together with other therapeutic agents, in treating or preventing diseases or disorders such as viral infections and virus-related disorders.
    Type: Application
    Filed: August 19, 2009
    Publication date: November 24, 2011
    Inventors: Cecil D. Kwong, F. George Njoroge, Subramaniam Ananthan, Jeremy Clark, Feng Geng, Hollis S. Kezar, III, Joseph A. Maddry, John J. Piwinski, Robert C. Reynolds, Abhijit Roychowdhury, John A. Secrist, III, Neng-Yang Shih