Patents by Inventor Subba Reddy Danda

Subba Reddy Danda 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 raltegravir
    Patent number: 10259778
    Abstract: The present invention provides a process for the preparation of crystalline anhydrous compound of Formula (X), Further, the present invention relates to the use of compound of Formula (X) preparation of Raltegravir (I) or its pharmaceutically acceptable salt thereof.
    Type: Grant
    Filed: November 9, 2015
    Date of Patent: April 16, 2019
    Assignee: Aurobindo Pharma Ltd
    Inventors: Shankar Reddy Budidet, Jagan Mohan Reddy Sanapureddy, Subba Reddy Danda, Bhima Shankar Gangadhara, Somappa Somannavar Yallappa, Kishore Karumanchi, Sivakumaran Meenakshisunderam
  • AN IMPROVED PROCESS FOR THE PREPARATION OF RALTEGRAVIR
    Publication number: 20170334838
    Abstract: The present invention provides a process for the preparation of crystalline anhydrous compound of Formula (X), Further, the present invention relates to the use of compound of Formula (X) preparation of Raltegravir (I) or its pharmaceutically acceptable salt thereof.
    Type: Application
    Filed: November 9, 2015
    Publication date: November 23, 2017
    Applicant: Aurobindo Pharma Ltd
    Inventors: Shankar Reddy Budidet, Jagan Mohan Reddy Sanapureddy, Subba Reddy Danda, Bhima Shankar Gangadhara, Somappa Somannavar Yallappa, Kishore Karumanchi, Sivakumaran Meenakshisunderam
  • Process for the preparation of Dolutegravir
    Patent number: 9573965
    Abstract: The present invention provides (R)-3-Amino-1-butanol (D)-tartarate (IIb); process for its preparation and its conversion to Dolutegravir. The present invention also provides an improved process for the preparation of Dolutegravir (I) or pharmaceutically acceptable salts wherein compound (XVI) is reacted with an optically active acid addition salt of (R)-3-amino-1-butanol (IIa).
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: February 21, 2017
    Assignee: Aurobindo Pharma Ltd
    Inventors: Shankar Reddy Budidet, Nageshwar Dussa, Gowrisankar Rao Kaki, Srinivasa Rao Yatcherla, Jagan Mohan Reddy Sanapureddy, Subba Reddy Danda, Srinivasachary Katuroju, Sivakumaran Meenakshisunderam
  • An improved process for the preparation of Dolutegravir
    Publication number: 20160108058
    Abstract: The present invention provides (R)-3-Amino-1-butanol (D)-tartarate (IIb); process for its preparation and its conversion to Dolutegravir. The present invention also provides an improved process for the preparation of Dolutegravir (I) or pharmaceutically acceptable salts wherein compound (XVI) is reacted with an optically active acid addition salt of (R)-3-amino-1-butanol (IIa).
    Type: Application
    Filed: February 7, 2014
    Publication date: April 21, 2016
    Applicant: Aurobindo Pharma Ltd.
    Inventors: Shankar Reddy Budidet, Nageshwar Dussa, Gowrisankar Rao Kaki, Srinivasa Rao Yatcherla, Jagan Mohan Reddy Sanapureddy, Subba Reddy Danda, Srinivasachary Katuroju, Sivakumaran Meenakshisunderam
  • PROCESS FOR THE PREPARATION OF LACOSAMIDE
    Publication number: 20130123537
    Abstract: The present invention relates to an improved process for the preparation of Lacosamide of Formula (I), comprising: O-methylating a compound of Formula (V) or a compound of Formula (XX) or a compound of Formula XXII; in the presence of a methylating agent and a base to produce Lacosamide of Formula (I).
    Type: Application
    Filed: May 16, 2011
    Publication date: May 16, 2013
    Inventors: K a s s Narayan Garimella, Subba Reddy Danda, Shankar Reddy Budidet, Srinivasachary Katuroju, Gowrisankar Rao Kaki, Srinivasa Rao Yatcherla, Islam Aminul, Sivakumaran Meenakshisunderam
  • Process for the preparation of biphosphonic acids
    Patent number: 7528280
    Abstract: An improved process for bisphosphonylation of acids, substituted acids to obtain compounds with the formula using phosphorus trihalide, phosphorus acid, in presence of phenolic compounds as diluent/solvent.
    Type: Grant
    Filed: January 18, 2007
    Date of Patent: May 5, 2009
    Assignee: Aurobindo Pharma Ltd.
    Inventors: Subba Reddy Danda, Narayan K. A. S. S. Garimella, Srinivasa Rao V. N Divvela, Ramesh Dandala, Sivakumaran Meenakshisunderam
  • Process for the preparation of biphosphonic acids
    Publication number: 20070173645
    Abstract: An improved process for bisphosphonylation of acids, substituted acids to obtain compounds with the formula using phosphorus trihalide, phosphorus acid, in presence of phenolic compounds as diluent/solvent.
    Type: Application
    Filed: January 18, 2007
    Publication date: July 26, 2007
    Inventors: Subba Reddy Danda, Narayan K.A.S.S. Garimella, Srinivasa Rao V.N Divvela, Ramesh Dandala, Sivakumaran Meenakshisunderam