Patents by Inventor Tushar Nandkumar Deshpande

Tushar Nandkumar Deshpande 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 AMISULPRIDE
    Publication number: 20130096319
    Abstract: The present invention is related to a novel process for the preparation of amisulpride (I) which involves: methylation of 4-amino-salicylic-acid (VI) with dimethyl sulphate and base, optionally in presence of TBAB to obtain 4-amino-2-methoxy methyl benzoate (VII) and (ii) oxidation of 4-amino-2-methoxy-5-ethyl thio benzoic acid (IX) or 4-amino-2-methoxy-5-ethyl thio methyl benzoate (X) with oxidizing agent in the presence of sodium tungstate or ammonium molybdate to give 2-methoxy-4-amino-5-ethyl-sulfonyl benzoic acid (IV) or 2-methoxy-4-amino-5-ethyl-sulfonyl methyl benzoate (XI) respectively.
    Type: Application
    Filed: June 9, 2011
    Publication date: April 18, 2013
    Applicant: Lupin Limited
    Inventors: Dinesh Jayntibhai Paghdar, Mahesh Ramkumar Kolekar, Tushar Nandkumar Deshpande, Suryaprakash Pandurang Patil, Yuvraj Atmaram Chavan, Purna Chandra Ray, Girij Pal Singh