AN IMPROVED PROCESS FOR PREPARATION OF OLMESARTAN

摘要

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.