[EN] PROCESS FOR PREPARATION OF NARATRIPTAN HYDROCHLORIDE<br/>[FR] PROCÉDÉ DE PRÉPARATION DE CHLORHYDRATE DE NARATRIPTANE
申请人:USV LTD
公开号:WO2009118753A2
公开(公告)日:2009-10-01
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.
[EN] PROCESS FOR PREPARING INDOLE DERIVATIVES<br/>[FR] PROCÉDÉ DE PRÉPARATION DE DÉRIVÉS D'INDOLE
申请人:IND SWIFT LAB LTD
公开号:WO2010004580A2
公开(公告)日:2010-01-14
The present invention provides a process for the preparation of indole derivatives, specifically N- methyl-1H-indole-5-ethanesulfonamide of formula (I), involving novel intermediate, which is used as key intermediate for the synthesis of naratriptan of formula (II), and its pharmaceutically acceptable salts thereof high yield and purity.