1025797-49-2Relevant academic research and scientific papers
PROCESS FOR PREPARATION OF NARATRIPTAN HYDROCHLORIDE
-
Page/Page column 25-26, (2009/10/22)
The present invention relates to an improved process for the preparation of N-methyl-3- (1-methyl-4-piperidinyl)-1H-indole-5-ethanesulfonamide hydrochloride of formula (I) having less than 0.15 % area by HPLC of 3-(1-methyl-4-piperidinyl)-1H-indole-5- ethanesulfonamide (1A) and intermediates thereof.
PROCESS FOR THE PREPARATION OF INDOLE DERIVATIVES
-
Page/Page column 13, (2008/12/06)
The present invention relates to a novel process for the preparation of indole derivatives. In particular, present invention relates to the process for preparing naratriptan of formula (I), and its salts using novel intermediates. The present invention also relates to novel synthetic intermediates useful in the preparation of naratriptan hydrochloride.
