Patents by Inventor Srikanth Sarat Chandra Gorantla

Srikanth Sarat Chandra Gorantla 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).

  • Processes for the preparation of dehydroepiandrosterone and its intermediates
    Patent number: 9879045
    Abstract: The present application relates to a regioselective and stereoselective processes for the preparation of dehydroepi-androsterone (DHEA) and processes for its intermediates.
    Type: Grant
    Filed: May 21, 2014
    Date of Patent: January 30, 2018
    Assignee: DR. REDDY'S LABORATORIES LIMITED
    Inventors: Anna Fryszkowska, Michael Siegfried Quirmbach, Srikanth Sarat Chandra Gorantla, Sanjay Reddy Alieti, Srinivas Reddy Poreddy, Naresh Kumar Reddy Dinne, Upadhya Timmanna, Vilas Dahanukar
  • PROCESSES FOR THE PREPARATION OF DEHYDROEPIANDROSTERONE AND ITS INTERMEDIATES
    Publication number: 20160122382
    Abstract: The present application relates to a regioselective and stereoselective processes for the preparation of dehydroepiandrosterone (DHEA) and processes for its intermediates.
    Type: Application
    Filed: May 21, 2014
    Publication date: May 5, 2016
    Inventors: Anna FRYSZKOWSKA, Michael Siegfried QUIRMBACH, Srikanth Sarat Chandra GORANTLA, Sanjay Reddy ALIETI, Srinivas Reddy POREDDY, Naresh Kumar Reddy DINNE, Upadhya TIMMANNA, Vilas DAHANUKAR
  • Process for the preparation of tenofovir disoproxil fumarate
    Patent number: 8759515
    Abstract: The present invention relates to an improved process for the preparation of Tenofovir Disoproxil and its pharmaceutically acceptable salts comprising the steps of: a) esterifying Tenofovir with chloromethyl isopropyl carbonate in presence of a base, phase transfer catalyst and optionally dehydrating agent, in a suitable solvent; b) optionally purifying Tenofovir Disoproxil; and c) converting of Tenofovir Disoproxil into its pharmaceutically acceptable salts. The present invention further relates to a process for the preparation of Tenofovir by reacting 1-(6-amino-purin-9-yl)-propan-2-ol with toluene-4-sulfonic acid diethoxy phosphoryl methyl ester in presence of a base in a non-polar solvent medium followed by hydrolysis.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: June 24, 2014
    Assignee: Mylan Laboratories Limited
    Inventors: Debashish Datta, Siva Rama Prasad Vellanki, Arabinda Sahu, Raja Babu Balusu, Mastan Rao Ravi, Hari Babu Nandipati, Shankar Rama, Lakshmana Rao Vadali, Srikanth Sarat Chandra Gorantla, Srinivasa Rao Dasari, Nagaraju Mittapelly
  • PROCESS FOR THE PREPARATION OF TENOFOVIR DISOPROXIL FUMARATE
    Publication number: 20130005969
    Abstract: The present invention relates to an improved process for the preparation of Tenofovir Disoproxil and its pharmaceutically acceptable salts comprising the steps of: a) esterifying Tenofovir with chloromethyl isopropyl carbonate in presence of a base, phase transfer catalyst and optionally dehydrating agent, in a suitable solvent; b) optionally purifying Tenofovir Disoproxil; and c) converting of Tenofovir Disoproxil into its pharmaceutically acceptable salts. The present invention further relates to a process for the preparation of Tenofovir by reacting 1-(6-amino-purin-9-yl)-propan-2-ol with toluene-4-sulfonic acid diethoxy phosphoryl methyl ester in presence of a base in a non-polar solvent medium followed by hydrolysis.
    Type: Application
    Filed: March 11, 2011
    Publication date: January 3, 2013
    Inventors: Debashish Datta, Siva Rama Prasad Vellanki, Arabinda Sahu, Raja Babu Balusu, Mastan Rao Ravi, Hari Babu Nandipati, Shankar Rama, Lakshmana Rao Vadali, Srikanth Sarat Chandra Gorantla, Srinivasa Rao Dasari, Nagaraju Mittapelly