Patents by Inventor Veera Venkata Naga Chandra Sekhar Bulusu

Veera Venkata Naga Chandra Sekhar Bulusu 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 PREPARATION OF SOLID MONTELUKAST
    Publication number: 20100063291
    Abstract: A process for preparation of montelukast or a salt thereof is provided, the process including reacting a late intermediate compound which is 2-[1-[1-R-3-[2-(7 chloro quinolin-2-yl)vinyl [phenyl]-3-[2-methoxy carbonyl phenyl]propyl sulfonyl methyl]cyclo propyl]acetic acid or a salt thereof with methyl magnesium chloride or methyl magnesium bromide in an organic solvent. In one embodiment, the process includes reacting an earlier intermediate compound which is methyl 2-(3-R-(3-(2-(7-chloro 2-quinolinyl)-ethenyl)-3 hydroxy propyl)benzoate with methane sulfonyl chloride or toluene sulfonyl chloride to obtain a mesylated or tosylated derivative of the earlier intermediate compound; followed by a reaction of the mesylated or tosylated derivative with 1-mercapto methyl cyclopropane acetic acid in a polar solvent in a presence of a base to obtain the late intermediate compound.
    Type: Application
    Filed: November 17, 2009
    Publication date: March 11, 2010
    Applicants: DR. REDDY'S LABORATORIES, INC., DR. REDDY'S LABORATORIES LIMITED
    Inventors: Buchi Reddy Reguri, Satyanarayana Bollikonda, Veera Venkata Naga Chandra Sekhar Bulusu, Ravi Kumar Kasturi, Sanjeev Kumar Aavula
  • Process for the preparation of [R-(E)-1-[[[1-[3-[2-[7-chloro-2-quinolinyl]ethenyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]thio]methyl]cyclopropaneacetic acid (Montelukast) and its pharmaceutically acceptable salts
    Patent number: 7189853
    Abstract: The present invention is related to a process for preparing montelukast involving the compound of formula (VI): wherein X?CN or CONH2.
    Type: Grant
    Filed: September 2, 2004
    Date of Patent: March 13, 2007
    Assignees: Dr. Reddy's Laboratories Limited, Dr. Reddy's Laboratories, Inc.
    Inventors: Venkataraman Sundaram, Srinivasan Thirumalai Rajan, Veera Venkata Naga Chandra Sekhar Bulusu, AlokKumar Srivastav, Ravi Kumar Kasturi, Sanjeev Kumar Aavula
  • Process for preparing olanzapine
    Publication number: 20060035887
    Abstract: A process for preparing olanzapine comprising methylation of N-demethyl olanzapine with a methylating agent in a solvent comprising dichloromethane, methanol, or a mixture thereof.
    Type: Application
    Filed: June 30, 2005
    Publication date: February 16, 2006
    Inventors: Sundaram Venkataraman, Srinivasan Rajan, Veera Venkata Naga Chandra Sekhar Bulusu, Ravi Kasturi, Suneel Kapabalu, Kavitha Gokavalasa