Patents by Inventor Vikram Vanama

Vikram Vanama 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 darunavir
    Patent number: 8703980
    Abstract: A process for the preparation of Darunavir comprises the reacting of 4-amino-N-(2R, 3S) (3-amino-2-hydroxy-4-phenylbutyl)-N-isobutyl-benzenesulfonamide with (3R, 3aS,6aR)-hexahydrofuro[2,3-b]furan-3-ol derivative in N-methyl-2-pyrrolidinone and isolating the resulting Darunavir. The process yields Darunavir with a very low level of the difuranyl impurity.
    Type: Grant
    Filed: September 16, 2010
    Date of Patent: April 22, 2014
    Inventors: Siva Rama Prasad Vellanki, Arabinda Sahu, Aravind Kumar Katukuri, Vikram Vanama, Satishbabu Kothari, Venkata Suryanarayana Ponnekanti, Debashish Datta
  • PROCESS FOR THE PREPARATION OF DARUNAVIR
    Publication number: 20120251826
    Abstract: A process for the preparation of Darunavir comprises the reacting of 4-amino-N-(2R,3S) (3-amino-2-hydroxy-4-phenylbutyl)-N-isobutyl-benzenesulfonamide with (3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-ol derivative in N-methyl-2-pyrrolidinone and isolating the resulting Darunavir. The process yields Darunavir with a very low level of the difuranyl impurity.
    Type: Application
    Filed: September 16, 2010
    Publication date: October 4, 2012
    Inventors: Siva Rama Prasad Vellanki, Arabinda Sahu, Aravind Kumar Katukuri, Vikram Vanama, Satishbabu Kothari, Venkata Suryanarayana Ponnekanti, Debashish Datta