Abstract This document describes a simple and robust process for the synthesis of olmesartanmedoxomil. This tailored process allows us to synthesize olmesartanmedoxomil on a large scale with 50% overall yield. Also, our process has excellent control of the impurity profile in all the stages.
[EN] PROCESS FOR PREPARING OLMESARTAN MEDOXOMIL<br/>[FR] PROCÉDÉ DE PRÉPARATION D'OLMÉSARTAN MÉDOXOMIL
申请人:INTERQUIM SA
公开号:WO2012055994A1
公开(公告)日:2012-05-03
The invention relates to a process for preparing olmesartan medoxomil by the reaction of sodium 5-(1-hydroxy-1-methylethyl)-2-propyl-3-[2'-(1-trityl-1H-tetrazol-5-yl)-biphenyl-4-ylmethyl]-3H-imidazole-4-carboxylate, obtained by the reaction between ethyl 5-(1-hydroxy-1-methylethyl)-2-propyl-3H-imidazole-4- carboxylate from and 5-(4'-bromomethylbiphenyl-2-yl)-1-trityl-1H-tetrazole followed by saponification, with 4-(chloromethyl)-5-methyl-1,3-dioxol-2-one, deprotection and purification.