Patents by Inventor Veereshapa

Veereshapa 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 Irinotecan Hydrochloride Trihydrate
    Publication number: 20080182990
    Abstract: The invention relates to an improved process for the preparation of Irinotecan hydrochloride trihydrate of formula (4) of enhanced yield, purity by contacting 1-chlorocarbonyl-4-piperidinopiperidine hydrochloride with 7-ethyl-10-hydroxy-camptothecin [IRT-3 (synthetic)] to obtain crude Irinotecan which is subsequently purified by solvent treatment, obtaining purified irinotecan which is converted into irinotecan hydrochloride trihydrate and the invention also relates to a report of the compound 1-chlorocorbonyl-4-piperidinopiperidine hydrochloride of formula (1) and its process for preparation.
    Type: Application
    Filed: August 9, 2004
    Publication date: July 31, 2008
    Applicant: SHILPA MEDICARE LIMITED
    Inventors: B. Vishnukant, Prashant Purohit, K. Paparao, Veereshapa