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:
Dec. 12, 1989
Filed:
Sep. 13, 1988
Applicant:
Inventors:
Ryoji Noyori, Aichi, JP;
Masaaki Suzuki, Nogoya, JP;
Akira Yanagisawa, Nagoya, JP;
Seizi Kurozumi, Kokubunji, JP;
Assignee:
Teijin Limited, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ;
U.S. Cl.
CPC ...
560121 ; 562503 ;
Abstract
The present invention provides a process for the production of PGD.sub.2, wherein 7-hydroxy prostaglandin F.sub.2 .alpha. is treated with thiocarbonyl diimidazole or its analog and subjecting thus treated product to the reaction to deoxidize the hydroxyl group at the 7-position, the reaction to convert the hydroxyl group to a protecting group, and the reaction to oxidize the hydroxyl group at the 11-position, thus giving PGD.sub.2 at a high efficiency.