[EN] PROCESS FOR THE PREPARATION OF DABIGATRAN ETEXILATE AND INTERMEDIATES THEREOF<br/>[FR] PROCÉDÉ DE PRÉPARATION D'ÉTÉXILATE DE DABIGATRAN ET SES INTERMÉDIAIRES
申请人:GLENMARK PHARMACEUTICALS LTD GLENMARK GENERICS LTD
公开号:WO2014041559A2
公开(公告)日:2014-03-20
The present invention provides a process for the preparation of dabigatran etexilate, a compound of Formula I or a salt thereof, in a purity of at least 99.0% and wherein the level of compound of formula X and XV is less than 0.15% w/w relative to the amount of dabigatran etexilate, a compound of Formula I or salt thereof, as determined by HPLC comprising; (a) subjecting a crude compound of formula I to treatment with alkyl acetate and ketone to form a mixture; (b) optionally heating the mixture; and (c) isolating the compound of Formula I.