Patents by Inventor Saraswati Rani

Saraswati Rani 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 carbapenem compounds
    Patent number: 8841444
    Abstract: The present invention relates to a process for the preparation of carbapenem compound of Formula (I), wherein P1 is hydrogen or a carboxyl protecting group, P3 is hydrogen or a hydroxyl protecting group, R1 is C1-3 alkyl, and A is selected from a group consisting of a) Formula (II), b) Formula (III), c) Formula (IV), d) Formula (V), e) Formula (VI), f) Formula (VII), wherein P2 is hydrogen or an amino protecting group, R2 and R3 may be same or different and are hydrogen, C1-5 alkyl, optionally substituted aryl, or optionally substituted heteroaryl, and X1 is O or S, or its stereoisomers, or salts thereof.
    Type: Grant
    Filed: July 30, 2009
    Date of Patent: September 23, 2014
    Assignee: Ranbaxy Laboratories Limited
    Inventors: Neera Tewari, Shailendra Kumar Singh, Brij Kishore Mishra, Saraswati Rani
  • PROCESS FOR THE PREPARATION OF CARBAPENEM COMPOUNDS
    Publication number: 20110224426
    Abstract: The present invention relates to a process for the preparation of carbapenem compound of Formula (I), wherein P1 is hydrogen or a carboxyl protecting group, P3 is hydrogen or a hydroxyl protecting group, R1 is C1-3 alkyl, and A is selected from a group consisting of a) Formula (II), b) Formula (III), c) Formula (IV), d) Formula (V), e) Formula (VI), f) Formula (VII), wherein P2 is hydrogen or an amino protecting group, R2 and R3 may be same or different and are hydrogen, C1-5 alkyl, optionally substituted aryl, or optionally substituted heteroaryl, and X1 is O or S, or its stereoisomers, or salts thereof.
    Type: Application
    Filed: July 30, 2009
    Publication date: September 15, 2011
    Inventors: Neera Tewari, Shailendra Kumar Singh, Brij Kishore Mishra, Saraswati Rani