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:
Jan. 04, 1977
Filed:
Aug. 12, 1974
Applicant:
Inventors:
Ryoji Noyori, Nagoya, JA;
Yoshihiro Hayakawa, Ichinomiya, JA;
Yutaka Baba, Bisai, JA;
Shinji Makino, Hazu, JA;
Assignee:
Sanwa Kagaku Kenkyusho Co. Ltd., Nagoya, JA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ; C07D / ;
U.S. Cl.
CPC ...
260292 ; 2041 / ;
Abstract
Process for the preparation of tropane alkaloids, more particularly of N-acyl-dehydronortropinones, dehydrotropine and tropine. The compounds can be prepared by cyclocoupling N-acyl-pyrrole with .alpha.,.alpha.'-halogenoketone in the presence of a reducing agent and, if necessary, subjecting the resulting N-acyl-dehydronortropinone to either partial reduction and then stereo-selective reduction, or stereo-selective reduction and then partial reduction.