[EN] PROCESS FOR THE PREPARATION OF INDOLE DERIVATIVES<br/>[FR] PROCÉDÉ DE PRÉPARATION DE DÉRIVÉS DE L'INDOLE
申请人:IND SWIFT LAB LTD
公开号:WO2008072257A2
公开(公告)日:2008-06-19
[EN] 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. [FR] L'invention concerne un nouveau procédé de préparation de dérivés de l'indole. En particulier, concerne le procédé de préparation de naratriptane de formule (I) et de ses sels, au moyen de nouveaux produits intermédiaires. L'invention concerne également de nouveaux produits intermédiaires synthétiques utilisés dans la préparation de chlorhydrate de naratriptane.
[EN] A PROCESS FOR THE PREPARATION OF NARATRIPTAN HYDROCHLORIDE<br/>[FR] PROCÉDÉ DE PRÉPARATION DE CHLORHYDRATE DE NARATRIPTAN
申请人:ORCHID CHEMICALS & PHARM LTD
公开号:WO2009016466A2
公开(公告)日:2009-02-05
The present invention provides a process for the preparation of Naratriptan hydrochloride which comprises decarboxylation of 5-2-[(methylamino) sulfonyl] ethyl}-1H-indole-2-carboxylic acid to get 2-(1H-indol-5-yl)-N-methylethanesulfonamide using sulfolane as a solvent, and further reacting 2-(1H-indol-5-yl)-N-methylethanesulfonamide to obtain Naratriptan hydrochloride.
[EN] PROCESS FOR PREPARATION OF NARATRIPTAN HYDROCHLORIDE<br/>[FR] PROCÉDÉ DE PRÉPARATION DE CHLORHYDRATE DE NARATRIPTANE