Demethylation of 14-hydroxy substituted alkaloid derivatives

Details Demethylation of 14-hydroxy substituted alkaloid derivatives Demethylation of 14-hydroxy substituted alkaloid derivatives

C - Chemistry, Metallurgy

07

D

C07D 489/08 (2006.01) C07F 7/18 (2006.01)

Patent

CA 2644881

The present invention is directed to a method for demethylating 14-hydroxy substituted alkaloid derivatives, in particular of 14-hydroxy-17-methyl-4,5- epoxymorphinane-6-on--derivatives. This is achieved by reacting a starting compound with a compound of general formula R1OOC-N=N-COOR2 in a suitable solvent.

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