Patents by Inventor Marie Christine Appert-Collin nee Levy

Marie Christine Appert-Collin nee Levy 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).

  • Process for the preparation of vincadifformine and derivatives
    Patent number: 3987048
    Abstract: In the preparation of vincadifformine and derivatives thereof, such as 3-oxo-1,2-dehydroaspidospermidine and 1,2-dehydro-aspidospermidine, 2-hydroxy-tryptamine or a derivative thereof substituted in the benzene ring is condensed with dimethyl 4-ethyl-4-formyl-pimelate to form an oxindolic lactam-ester as the first step of the process. By means of this process, vincadifformine and its derivatives can be obtained in a smaller number of steps than in known processes.
    Type: Grant
    Filed: June 18, 1974
    Date of Patent: October 19, 1976
    Assignee: Omnium Chimique Societe Anonyme
    Inventors: Jean Georges Le Men, Louisette Marie Therese Olivier nee Le Men, Jean Levy, Marie Christine Appert-Collin nee Levy, Jean Alfred Alphonse Joseph Hannart