Patents by Inventor Tingman Wang

Tingman Wang 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 5-amino-3H-thiazolo[4,5-d]pyrimidin-2-one
    Patent number: 7781581
    Abstract: The present invention relates to a process for the preparation of 5-amino-3H-thiazolo[4,5-d]pyrimidin-2-one which is a useful intermediate in the preparation of certain thiazolo[4,5-d]pyrimidine nucleosides. The process comprises halogenating 2,4-diaminopyrimidine to form 2,4-diamino-5-halo-pyrimidine and then cyclocondensing the 2,4-diamino-5-halo-pyrimidine to form 5-amino-3H-thiazolo[4,5-d]pyrimidin-2-thione. The 5-amino-3H-thiazolo[4,5-d]pyrimidin-2-thione is then oxidized to afford the 5-amino-3H-thiazolo[4,5-d]pyrimidin-2-one.
    Type: Grant
    Filed: November 20, 2006
    Date of Patent: August 24, 2010
    Assignee: Anadys Pharmaceuticals, Inc.
    Inventors: Tingman Wang, John S. Ng, Stephen E. Webber
  • Novel process for the preparation of 5-amino-3H-thiazolo[4,5-d]pyrimidin-2-one
    Publication number: 20070117979
    Abstract: The present invention relates to a process for the preparation of the title compound, 5-amino-3H-thiazolo[4,5-d]pyrimidin-2-one, which is a useful intermediate in the preparation of certain thiazolo[4,5-d]pyrimidine nucleosides, which can have utility as immunomodulators.
    Type: Application
    Filed: November 20, 2006
    Publication date: May 24, 2007
    Applicant: Anadys Pharmaceuticals, Inc.
    Inventors: Tingman Wang, John Ng, Stephen Webber