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:
Oct. 25, 1977
Filed:
May. 28, 1976
Applicant:
Inventor:
Robert George Christiansen, Schodack, NY (US);
Assignee:
Sterling Drug Inc., New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07J / ;
U.S. Cl.
CPC ...
2602 / ;
Abstract
A process for preparing 17.beta.-hydroxysteroido[2,3-d]isoxazoles substituted at the 17.alpha.-position by an ethynyl or substituted ethynyl group comprising reacting a 17-oxosteroido[2,3-d]isoxazole with the appropriate ethynylmagnesium halide, substituted ethynylmagnesium halide, monolithium acetylide or substituted monolithium acetylide. The process affords a novel compound, 21-trifluoromethyl-17.alpha.-pregn-4-en-20-yno[2,3-d]isoxazol-17-ol, which has estrogenic activity.