abstract |
The present invention provides a novel production method, a novel partial reaction and a novel intermediate for the production of a tryptamine derivative pharmaceutical for the purpose of treating and / or preventing migraine symptoms. The following formula (III) [Wherein R 1 represents an alkyl group, an aryl group, etc., R 2 represents a hydrogen atom, an alkyl group, etc., and R ′ represents an alkyl group] A halocarbonate or a specific halocarbamate is reacted to form an ester derivative or an amide derivative. [Selection figure] None |