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:
Mar. 31, 1981
Filed:
Sep. 28, 1979
Applicant:
Inventors:
Karel Wiesner, Fredericton, CA;
Thomas Y Tsai, Fredericton, CA;
Assignee:
Advance Biofactures Corporation, Lynbrook, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07J / ;
U.S. Cl.
CPC ...
2602 / ; 26023957 ;
Abstract
The invention relates to furyl intermediates and the preparation thereof, said intermediates being particularly useful in the preparation of synthetic cardenolides and their isomers. The process provides for the reaction of an unsaturated steroidal 17 ketone with a .beta.-furyl compound to produce an allylic alcohol which is subjected to acetylation and allylic rearrangement. The resulting material is then hydrogenated to produce the furyl intermediate. Cardenolides are formed therefrom by oxidation of the furyl intermediates.