PROCESS FOR PREPARING VALSARTAN

摘要

The invention relates to novel compound of formula (IV), which is an organic acid salt of N-[(2'-cyanobiphenyl-4-yl)methyl]-(L)-valine ester. This compound is an useful intermediate for process of preparation of Valsartan of formula (I), chemically known as (S)-N-(l-Carboxy-2-methylprop-l-yl)-N-pentanoyl-N-[2'-(lH-tetrazol-5-yl)biphenyl-4- ylmethyl]amine. This invention also relates to a process for preparing Valsartan using novel intermediate of formula (IV).