Patents by Inventor Shanmughasamy Rajmahendra

Shanmughasamy Rajmahendra 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 forms of posaconazole intermediate and process for the preparation of amorphous posaconazole
    Patent number: 10927102
    Abstract: The present invention provides an industrial method production of amorphous posaconazole. The present invention also relates to a method for production of the posaconazole via and novel crystalline forms of posaconazole intermediate. More particularly the present invention relates to novel crystalline forms of posaconazole intermediate and methods for production of novel crystalline forms of posaconazole intermediate represented by the following structural formula III Which is key intermediate in the production of posaconazole. The present invention also provides for the one pot process for the preparation of amorphous posaconazole using novel crystalline forms of benzyl posaconazole.
    Type: Grant
    Filed: October 17, 2019
    Date of Patent: February 23, 2021
    Assignee: BIOCON LIMITED
    Inventors: Palle Venkata Raghavendra Charyulu, Dharshan Jakkali Chandre Gowda, Shanmughasamy Rajmahendra, Manikandan Raman
  • 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
  • CRYSTALLINE FORMS OF POSACONAZOLE INTERMEDIATE AND PROCESS FOR THE PREPARATION OF AMORPHOUS POSACONAZOLE
    Publication number: 20200087289
    Abstract: The present invention provides an industrial method production of amorphous posaconazole. The present invention also relates to a method for production of the posaconazole via and novel crystalline forms of posaconazole intermediate. More particularly the present invention relates to novel crystalline forms of posaconazole intermediate and methods for production of novel crystalline forms of posaconazole intermediate represented by the following structural formula III Which is key intermediate in the production of posaconazole. The present invention also provides for the one pot process for the preparation of amorphous posaconazole using novel crystalline forms of benzyl posaconazole.
    Type: Application
    Filed: October 17, 2019
    Publication date: March 19, 2020
    Inventors: Palle Venkata Raghavendra CHARYULU, Dharshan Jakkali Chandre GOWDA, Shanmughasamy RAJMAHENDRA, Manikandan RAMAN
  • Crystalline forms of posaconazole intermediate and process for the preparation of amorphous posaconazole
    Patent number: 10457668
    Abstract: The present invention provides an industrial method production of amorphous posaconazole. The present invention also relates to a method for production of the posaconazole via and novel crystalline forms of posaconazole intermediate. More particularly the present invention relates to novel crystalline forms of posaconazole intermediate and methods for production of novel crystalline forms of posaconazole intermediate represented by the following structural formula III Which is key intermediate in the production of posaconazole. The present invention also provides for the one pot process for the preparation of amorphous posaconazole using novel crystalline forms of benzyl posaconazole.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: October 29, 2019
    Assignee: BIOCON LIMITED
    Inventors: Palle Venkata Raghavendra Charyulu, Dharshan Jakkali Chandre Gowda, Shanmughasamy Rajmahendra, Manikandan Raman
  • CRYSTALLINE FORMS OF POSACONAZOLE INTERMEDIATE AND PROCESS FOR THE PREPARATION OF AMORPHOUS POSACONAZOLE
    Publication number: 20180319777
    Abstract: The present invention provides an industrial method production of amorphous posaconazole. The present invention also relates to a method for production of the posaconazole via and novel crystalline forms of posaconazole intermediate. More particularly the present invention relates to novel crystalline forms of posaconazole intermediate and methods for production of novel crystalline forms of posaconazole intermediate represented by the following structural formula III Which is key intermediate in the production of posaconazole. The present invention also provides for the one pot process for the preparation of amorphous posaconazole using novel crystalline forms of benzyl posaconazole.
    Type: Application
    Filed: September 22, 2016
    Publication date: November 8, 2018
    Inventors: Palle Venkata Raghavendra CHARYULU, Dharshan Jakkali Chandre GOWDA, Shanmughasamy RAJMAHENDRA, Manikandan RAMAN
  • ACID ADDITION SALTS OF BOSENTAN
    Publication number: 20140275535
    Abstract: The present invention relates to the stable acid addition salts of Bosentan that are useful for the purification of Bosentan base. In particular, the Bosentan acid addition salt is selected from Bosentan citrate and Bosentan tartrate.
    Type: Application
    Filed: December 1, 2011
    Publication date: September 18, 2014
    Applicant: Biocon Limited
    Inventors: Srinivas Pullela Venkata, Kiran Kumar Kothakonda, Shanmughasamy Rajmahendra, Indrajit Chandrasekaran, Mariappan Kaliappan, Rekha Shivappa Mailar
  • PROCESS FOR PREPARATION OF ROSUVASTATIN ACETONIDE CALCIUM
    Publication number: 20110245285
    Abstract: The present invention is in relation to a process for preparation of HMG-CoA reductase inhibitor. More particularly, the present invention provides a process for preparation of (3R,5S,6E) 6-{2-[4-(4-Fluoro-phenyl)-6-isopropyl-2-(methanesulfonyl-methyl-amino)-pyrimidin-5-yl]-vinyl}-2,2-dimethyl-[1,3]dioxan-4-yl)-acetic acid, calcium salt (Rosuvastatin acetonide calcium) which is used for treating hypercholesterolemia.
    Type: Application
    Filed: October 22, 2008
    Publication date: October 6, 2011
    Applicant: BIOCON LIMITED
    Inventors: Pullela Venkata Srinivas, Sreenivasa Prasad Anegondi, Shanmughasamy Rajmahendra, Thangarasu Ponnusamy