Patents by Inventor Prasad Yeragorla

Prasad Yeragorla 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 3,4-EPOXY-2-AMINO-1-SUBSTITUTED BUTANE DERIVATIVES AND INTERMEDIATE COMPOUNDS THEREOF
    Publication number: 20110178305
    Abstract: The present invention relates to a process for the preparation of threo-3,4-epoxy-2-amino-1-substituted butane derivatives represented by general Formula I which comprises reacting compound of Formula III or salt thereof with an active ester of acid of Formula IV and treating the product thereof with base. The carbon atom bonded to the radical R3 in Formula I and IV is in the (R)-, (S)- or (R,S)-configuration. The compounds of Formula I and III, particularly in their (2S,3R) configuration are useful intermediates for the preparation of atazanavir bisulfate.
    Type: Application
    Filed: May 5, 2009
    Publication date: July 21, 2011
    Applicant: RANBAXY LABORATORIES LIMITED
    Inventors: Rakesh Singh, Prasad Yeragorla, Mahavir Singh Khanna, Mohan Prasad