Patents Assigned to Suven Life Sciences
  • Methods for the preparation of Entacapone
    Patent number: 7385072
    Abstract: The invention disclosed in this application relates to an improved process for the preparation of Entacapone. In one embodiment the process involves: (i) reacting a 3-alkoxy-4-hydroxy-5-nitrobenzadehyde with N,N-diethylaminocyanoacetamide in the presence of a mild acid catalyst and a solvent, to provide a 3-O-alkylated Entacapone, and treating the 3-O-alkylated Entacapone with an acid catalyst in the presence of an organic base to provide Entacapone.
    Type: Grant
    Filed: June 29, 2006
    Date of Patent: June 10, 2008
    Assignee: Suven Life Sciences
    Inventors: Jasti Venkateswarlu, Arava Veera Reddy, Chinnapillai Rajendiran, Samjuddin Md Md