Patents by Inventor Sergei Dzyuba

Sergei Dzyuba 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).

  • Core-Modified Terpene Trilactones From Ginkgo Biloba Extract and Biological Evaluation Thereof
    Publication number: 20090221019
    Abstract: Lactone-rings of ginkgolides are converted into the corresponding tetrahydrofuran moieties via DIBAL-H reduction followed by deoxygenation of the formed lactols with Et3SiH/BF3Et2O producing a series of lactol-free ginkgolides. The present invention also relates to synthesis of hydroxyl-free, or hydroxyl-free and lactone-free, ginkgolides and bilobalides.
    Type: Application
    Filed: June 22, 2006
    Publication date: September 3, 2009
    Inventors: Koji Nakanishi, Sergei Dzyuba, Hideki Ishii