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:
Jun. 04, 2002
Filed:
Mar. 15, 2001
Applicant:
Inventor:
Michael M. Schwartz, Naperville, IL (US);
Assignee:
Roche Vitamins Inc., Parsippany, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07J 7/900 ;
U.S. Cl.
CPC ...
C07J 7/900 ;
Abstract
An improved process and composition are disclosed for isolation of steroids containing a 5,7-diene functionality from a sterol mixture that comprises formation of a Diels-Alder reaction product of the ster-5,7-dienol in the presence of at least a catalytic amount of an ethylenically unsaturated C -C fatty carboxylic acid.