申请人:Firke Rajendra Vishwanath
公开号:US20140179930A1
公开(公告)日:2014-06-26
The present invention provides novel process for preparation of olmesartan medoxomil (I) substantially free of olmesartan acid impurity (II) comprising, reacting trityl olmesartan medoxomil (III) with acid, filtering the precipitate of trityl alcohol, subjecting the filtrate to agitated thin film drying and recovering olmesartan medoxomil (I).
本发明提供了一种制备基本无
奥美沙坦酸杂质(II)的
奥美沙坦酯酯(I)的新工艺,包括将三苄基
奥美沙坦酯酯(III)与酸反应,过滤三
苄基醇的沉淀,将滤液经过搅拌薄膜干燥并回收
奥美沙坦酯酯(I)。