Patents Assigned to Centaur Pharmaceutical Pvt. Ltd.
  • Process for the preparation of eszopiclone
    Patent number: 7786304
    Abstract: The invention relates to a process for making 6-(5-chloro-2-pyridinyl)-6,7-dihydro-7-oxo-5H-pyrrolo-[3,4-b]pyrazin-5-yl-4-methyl piperazine-1-carboxylate, also known as zopiclone. The invention further describes an effective method for resolving zopiclone into its enantiomers (eszopiclone and (R)-zopiclone) and also provides a method of recycling of (R)-zopiclone.
    Type: Grant
    Filed: November 6, 2007
    Date of Patent: August 31, 2010
    Assignee: Centaur Pharmaceutical Pvt. Ltd.
    Inventors: Shrikant Dattatraya Sawant, Anil Mahadev Naik, Girish Arvind Kavishwar, Smita Girish Kavishwar