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. 20, 1979
Filed:
Jul. 05, 1977
Applicant:
Inventor:
Alain Heymes, Portet, Garonne, FR;
Assignee:
Parcor, Paris, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
546 51 ;
Abstract
A process for preparing vincamine and related alkaloids, comprising reacting a compound of formula: ##STR1## (wherein R is H or methoxy and X and Y are hydrogen or together represent a double bond between the carbon atoms to which they are bonded) with a carbanion-forming agent in a reaction medium; then introducing oxygen into the reaction medium until saturation point, a reducing agent compatible with oxygen being added to the reaction medium before the medium ceases absorbing oxygen; acidifying the mixture and extracting therefrom a mixture of compounds ##STR2##