[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:WO2010004580A3
公开(公告)日:2011-03-31
An Efficient Synthetic Protocol for the Synthesis of 2-(1H-Indol-5-yl)- Ethanesulfonic Acid Methylamide: A Potential Synthetic Precursor for Naratriptan and its novel 3-substituted Derivatives
preparation of 2-(1H-Indol-5-yl)- ethanesulfonic acid methylamide has been successfully achieved for the synthesis of Naratriptan and its novel 3-substituted derivatives. Method: The preparation of 2-(1H-Indol-5-yl)-ethanesulfonic acid methylamide involves the condensation of (2,2-Dimethoxy-ethyl)-trimethylammonium bromide with thiophenol followed by Fischer indolisation with polyphosphoric acid. Finally