Preparation of vincamine and related alkaloids

Details Preparation of vincamine and related alkaloids Preparation of vincamine and related alkaloids

1977-07-05

1979-03-20

Trousof, Natalie

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D51904

Patent

active

041455525

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##

REFERENCES:
patent: 3799933 (1974-03-01), Le Men et al.
patent: 3979395 (1976-09-01), Taccone

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