The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 25, 2009
Filed:
Mar. 06, 2006
Applicant:
Silvio Iera, Montreal, CA;
Inventor:
Silvio Iera, Montreal, CA;
Assignee:
Wyeth, Madison, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D 263/56 (2006.01); C07D 413/00 (2006.01); C07D 498/00 (2006.01); C07D 293/00 (2006.01); C07D 421/00 (2006.01); C07D 517/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention provides processes for the purification of substituted benzoxazole compounds, and in particular 2-(3-fluoro-4-hydroxy-phenyl)-7-vinyl-benzooxazol-5-ol. The processes include recrystallizing the compound from a solution comprising acetone and acetonitrile; treating the crude purified product with a clarifying agent in a solution comprising ethyl acetate, and precipitating or triturating the compound from a mixed solvent system.