Patents by Inventor Ramesh Athmaram Konda

Ramesh Athmaram Konda 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-propenyl cephalosporin DMF solvate
    Patent number: 6903211
    Abstract: The present invention relates to an improved process for the preparation of cefprozil DMF solvate of formula (I), which is useful for the preparation of cefprozil, comprising: i) reacting a compound of formula (VIII) with acetaldehyde to produce a compound of formula (IX), ii) deesterifying the carboxy protecting group of the compound of formula (IX) using an acid to yield a compound of formula (X), iii) converting the compound of formula (X) to a compound of formula (XI), iv) neutralizing the compound of formula (XI) followed by enzymatic hydrolysis to produce an APCA of formula (V), v) silylating the APCA using a mixture of trimethylsilylchloride and hexamethyldisilazane to produce silylated APCA of formula (XII), and vi) condensing the silylated APCA with a mixed anhydride to produce the DMF solvate compound of formula (I).
    Type: Grant
    Filed: December 10, 2002
    Date of Patent: June 7, 2005
    Assignee: Orchid Chemicals & Pharmaceuticals Limited
    Inventors: Pandurang Balwant Deshpande, Bhausaheb Pandharinath Khadangale, Kumar Gurusamy, Ramesh Athmaram Konda
  • Process for the preparation of 3-propenyl cephalosporin DMF solvate
    Publication number: 20040087786
    Abstract: The present invention relates to an improved process for the preparation of 3-propenyl cephalosporin DMF solvate, more particularly, the present invention relates to an improved process for the preparation of cefprozil DMF solvate of the formula (I), which is useful for the preparation of cefprozil of the formula (XIV).
    Type: Application
    Filed: December 10, 2002
    Publication date: May 6, 2004
    Applicant: ORCHID CHEMICALS & PHARMACEUTICALS LIMITED
    Inventors: Pandurang Balwant Deshpande, Bhausaheb Pandharinath Khadangale, Kumar Gurusamy, Ramesh Athmaram Konda