Patents by Inventor Gary Lee Cantrell

Gary Lee Cantrell 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).

  • Two-phase method for the synthesis of selected pyrazolopyrimidines
    Patent number: 7498434
    Abstract: An improved method of making a substituted pyrazolopyrimidine. The method comprises reacting a aminopyrazole compound or a salt thereof with a substituted 1-oxo-2-propenyl-arene(-heterocycle) or a salt thereof under acidic conditions in a reaction medium including a two-phase mixture of an aqueous solution and a water-immiscible organic liquid. Specific substituted pyrazolopyrimidines include N-[3-(3-cyanopyrazolo[1,5-a]pyrimidin-7-yl)phenyl]-N-ethylacetamide and N-methyl-N-(3-{3-[2-thienyl-carbonyl]-pyrazolo[1,5-a]-pyrimidin-7-yl}phenyl)acetamide.
    Type: Grant
    Filed: December 2, 2004
    Date of Patent: March 3, 2009
    Assignee: Mallinckrodt Inc
    Inventors: Gary Lee Cantrell, Frank William Moser, Robert Edward Halvachs