Process for preparing lysergol derivatives

Details Process for preparing lysergol derivatives Process for preparing lysergol derivatives

C - Chemistry, Metallurgy

07

D

204/91.17, 260/2

C07D 457/02 (2006.01)

Patent

CA 1300127

-1- A B S T R A C T A PROCESS FOR PREPARING LYSERGOL DERIVATIVES A method of preparing lysergol derivatives, particularly 10.alpha.- methoxy lumilysergol, 1-methyl-10.alpha.-methoxy-lumilysergol and C8 esters of 1-methyl-10.alpha.-methoxy-lumilysergol, is provided characterised in that lysergol esters are subjected to photo-chemical reaction in methanol/sulphuric acid to form esters of 10.alpha.-methoxy lumilysergol. The esters can be subsequently hydrolyzed to obtain 10.alpha.-methoxy- lumilysergol, or can be transesterified with salts of other acids and/or N-methylated.

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