Patents by Inventor Venkata Rama Rao Alla

Venkata Rama Rao Alla 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).

  • Method of synthesizing key intermediates for the production of camptothecin derivatives
    Patent number: 7608740
    Abstract: The present invention discloses a process for efficient production of 2-amino-5-hydroxypropiophenone corresponding to the AB ring part of camptothecin (CPT) skeleton, which is a key intermediate useful for the total synthesis of camptothecin analogs including 7-Ethyl-10-hydroxy camptothecin and novel intermediates thereof.
    Type: Grant
    Filed: September 27, 2005
    Date of Patent: October 27, 2009
    Assignee: Avra Laboratories Pvt. Ltd
    Inventors: Ramakrishna Rao, Venkata Rama Rao Alla
  • Method of Synthesizing Key Intermediates for the Production of Camptothecin Derivatives
    Publication number: 20080221358
    Abstract: The present invention discloses a process for efficient production of 2-amino-5-hydroxypropiophenone corresponding to the AB ring part of camptothecin (CPT) skeleton, which is a key intermediate useful for the total synthesis of camptothecin analogs including 7-Ethyl-10-hydroxy camptothecin and novel intermediates thereof.
    Type: Application
    Filed: September 27, 2005
    Publication date: September 11, 2008
    Inventors: Ramakrishna Rao, Venkata Rama Rao Alla