[EN] (5-METHYL-2-OXO-1,3-DIOXOL-4-YLMETHYL)-4-(1-HYDROXY-1-METHYL-PROPYL)-2-PROPYL-1-[2'- (1H-TETRAZOL-5-YL)BIPHENYL-4-YL-METHYL]IMIDAZOLE-5-CARBOXYLATE AS AN IMPURITY OF OLMESARTAN MEDOXOMIL AND A METHOD OF ITS PREPARATION [FR] (5-MÉTHYL-2-OXO-1,3-DIOXOL-4-YLMÉTHYL)-4-(1-HYDROXY-1-MÉTHYL-PROPYL)-2- PROPYL-1-[2'-(1H-TÉTRAZOL-5-YL)BIPHÉNYL-4-YL-MÉTHYL]IMIDAZOLE-5- CARBOXYLATE EN TANT QU'IMPURETÉ DE L'OLMÉSARTAN MÉDOXOMIL ET SON PROCÉDÉ DE PRÉPARATION
[EN] AN IMPROVED PROCESS FOR PREPARATION OF OLMESARTAN<br/>[FR] PROCÉDÉ AMÉLIORÉ DE PRÉPARATION D'OLMÉSARTAN
申请人:CADILA HEALTHCARE LTD
公开号:WO2011007368A2
公开(公告)日:2011-01-20
The invention relates to processes for the preparation of olmesartan medoxomil and intermediates thereof. More particularly, it relates to a process for the preparation of ethyl-4-(1-hydroxy-1-methylethyl)-2-propyl-1-[[2'-[2-(triphenylmethyl)-2H-tetrazol- 5yl]- biphenyl-4-yl]methyl]imidazole-5-carboxylate, and its use in the preparation of olmesartan medoxomil. The invention also relates to crystalline olmesartan medoximil and pharmaceutical compositions that include the crystalline olmesartan medoximil.