Abstract
A new synthesis of N-methyl-3-(1-methyl-4-piperidinyl)-1H-indole-5-ethanesulfonamide (naratriptan, la) has been elaborated starting from 1-benzyl-1H-indole-5-carbaldehyde (14b). The 1-benzyl group proved to be an advantageous protecting group in the course of the construction of the ethanesulfonamide and methylpipieridinyl side-chains and it was removed in the last step of the synthesis.
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