Patents by Inventor Lavu Venkata Ramana

Lavu Venkata Ramana 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).

  • Resolution of 1-(4-methoxybenzyl)-octahydro-isoquinoline
    Patent number: 8148527
    Abstract: The resolution of racemic 1-(4-methoxybenzyl)-octahydro-isoquinoline, a key intermediate in the synthesis of the antitussive agent dextromethorphan, is reported using (R)-2-(6-methoxy-2-naphthyl) propionic acid in good yields. The resolving agent and the undesired isomer of the octahydro-isoquinoline have been recovered in good yield.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: April 3, 2012
    Assignee: Divi's Laboratories, Ltd.
    Inventors: Murali Krishna Prasad Divi, Srinivas Rao Pendyala, Lavu Venkata Ramana