Patents by Inventor Dharshan Jakkali Chandregowda

Dharshan Jakkali Chandregowda 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).

  • Crystalline linagliptin intermediate and process for preparation of linagliptin
    Patent number: 11040974
    Abstract: The present invention provides novel crystalline forms B1 & B2 of linagliptin intermediate of structural formula V and methods for production of novel crystalline form of linagliptin intermediate represented by the following structural formula V.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: June 22, 2021
    Assignee: BIOCON LIMITED
    Inventors: Venkata Raghavendracharyulu Palle, Shanmughasamy Rajmahendra, Dharshan Jakkali Chandregowda, Thangarasu Ponnusamy
  • CRYSTALLINE LINAGLIPTIN INTERMEDIATE AND PROCESS FOR PREPARATION OF LINAGLIPTIN
    Publication number: 20200354363
    Abstract: The present invention provides novel crystalline forms B1 & B2 of linagliptin intermediate of structural formula V and methods for production of novel crystalline form of linagliptin intermediate represented by the following structural formula V.
    Type: Application
    Filed: March 27, 2020
    Publication date: November 12, 2020
    Inventors: Venkata Raghavendracharyulu PALLE, Shanmughasamy RAJMAHENDRA, Dharshan Jakkali CHANDREGOWDA, Thangarasu PONNUSAMY
  • Process for the preparation of 2-amino-1,3-propane diol compounds and salts thereof
    Patent number: 9815772
    Abstract: The present disclosure relates to processes for the preparation of 2-amino-1,3-propane diol compounds and their hydrochloride salts. Particularly, the present disclosure relates to processes for synthesizing 2-amino-2-(2-(4-octylphenyl)ethyl)-1,3-propanediol and its hydrochloride salt 2-amino-2-(2-(4-octylphenyl)ethyl)-1,3-propanediol hydrochloride respectively. The said process is safe, commercially feasible for large-scale synthesis and has improved efficacy along with many other advantages. The present disclosure also relates to the novel polymorphs of 2-amino-1,3-propane diol compound and its hydrochloride salt, where in 2-amino-1,3-propane diol compound is 2-amino-2-(2-(4-octylphenyl)ethyl)-1,3-propanediol, and its hydrochloride salt is 2-amino-2-(2-(4-octylphenyl)ethyl)-1,3-propanediol hydrochloride.
    Type: Grant
    Filed: March 4, 2014
    Date of Patent: November 14, 2017
    Assignee: Biocon Limited
    Inventors: Kothakonda Kiran Kumar, Chandrashekar Aswathanarayanappa, Dharshan Jakkali Chandregowda, Chandrasekhar Duvva, Venkata Srinivas Pullela
  • A PROCESS FOR THE PREPARATION OF 2-AMINO-1,3-PROPANE DIOL COMPOUNDS AND SALTS THEREOF
    Publication number: 20160009634
    Abstract: The present disclosure relates to processes for the preparation of 2-amino-1,3-propane diol compounds and their hydrochloride salts. Particularly, the present disclosure relates to processes for synthesizing 2-amino-2-(2-(4-octylphenyl)ethyl)-1,3-propanediol and its hydrochloride salt 2-amino-2-(2-(4-octylphenyl)ethyl)-1,3-propanediol hydrochloride respectively. The said process is safe, commercially feasible for large-scale synthesis and has improved efficacy along with many other advantages. The present disclosure also relates to the novel polymorphs of 2-amino-1,3-propane diol compound and its hydrochloride salt, where in 2-amino-1,3-propane diol compound is 2-amino-2-(2-(4-octylphenyl)ethyl)-1,3-propanediol, and its hydrochloride salt is 2-amino-2-(2-(4-octylphenyl)ethyl)-1,3-propanediol hydrochloride.
    Type: Application
    Filed: March 4, 2014
    Publication date: January 14, 2016
    Inventors: Kothakonda Kiran Kumar, Chandrashekar Aswathanarayanappa, Dharshan Jakkali Chandregowda, Chandrasekhar Duvva, Venkata Srinivas Pullela