[EN] MODIFIED FISCHER INDOLE SYNTHESIS OF ELETRIPTAN [FR] PREPARATION D'ELETRIPTAN CONSISTANT EN UNE SYNTHESE MODIFIEE D'INDOLE PAR LA METHODE DE FISCHER
[EN] MODIFIED FISCHER INDOLE SYNTHESIS OF ELETRIPTAN [FR] PREPARATION D'ELETRIPTAN CONSISTANT EN UNE SYNTHESE MODIFIEE D'INDOLE PAR LA METHODE DE FISCHER
[EN] MODIFIED FISCHER INDOLE SYNTHESIS OF ELETRIPTAN<br/>[FR] PREPARATION D'ELETRIPTAN CONSISTANT EN UNE SYNTHESE MODIFIEE D'INDOLE PAR LA METHODE DE FISCHER
申请人:PFIZER LTD
公开号:WO2005103035A1
公开(公告)日:2005-11-03
The present invention relates to a new process for the preparation of eletriptan (I), or its enantiomer comprising a modified Fischer indole synthesis, namely the reaction of a compound of formula (II), wherein R1 is a suitable hydrazine protecting group, with a compound of formula (III) wherein R2 is an aldehyde group (-CHO) or the functional equivalent thereof.