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. 05, 1980
Filed:
May. 25, 1978
Applicant:
Inventors:
Edward J Hessler, Kalamazoo, MI (US);
Verlan H VanRheenen, Portage, MI (US);
Assignee:
The Upjohn Company, Kalamazoo, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07J / ; C07J / ;
U.S. Cl.
CPC ...
2603971 ; 2602395 ; 2602 / ; 26039745 ; 2603975 ; 2603974 ;
Abstract
17-Keto steroids (I) in their protected form (IIa or IIb) are reacted with a metalated olefin (VI) to give a 21-aldehyde (IV) which is readily transformed to a 16-unsaturated pregnane (V) which is useful in the production of commercially important substituted corticoids.