Patents by Inventor Danilo C. Massari

Danilo C. Massari 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).

  • Optically active 5-oxygenated (3S)-1,3-dimethyloxindole-3-acetic acids
    Patent number: 5310935
    Abstract: The synthesis of optically active 5-oxygenated (3S)-1,3-dimethyloxindole-3-acetic acids ##STR1## and their use in the synthesis of optically active (3aS-cis)-eseroline and (3aS-cis)-N.sup.1 -benzylnoreseroline, which are important intermediates in the synthesis of compounds related to (3aS-cis)-physostigmine and carbamate analogs, and of (3aS-cis)-N.sup.1 -benzylnor- and N.sup.1 -norphysostigmine and their carbamate analogs.
    Type: Grant
    Filed: June 30, 1992
    Date of Patent: May 10, 1994
    Assignee: Pharmagroup International
    Inventors: Arnold Brossi, Danilo C. Massari, Qian-Sheng Yu