Patents by Inventor Patrick Léon

Patrick Léon 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).

  • Preparation of camptothecin and of its derivatives
    Patent number: 6486320
    Abstract: The present invention relates to a novel process for preparation of camptothecin and of its derivatives by convergent synthesis starting from a 3-(aminomethyl)quinoline derivative and 5-hydroxy-5-ethyl-6-oxo-5,6-dihydropyrancarboxylic acid and to the intermediates obtained.
    Type: Grant
    Filed: September 14, 2001
    Date of Patent: November 26, 2002
    Assignee: Aventis Pharma S.A.
    Inventors: Stefanie Leue, Stéphanie Garçon, Andrew-Elliot Greene, Yves Génisson, Patrick Léon