This invention relates to novel intermediate, formula (A) for rivaroxaban and process for the preparation thereof. Further it extends to the process for preparation of rivaroxaban by using the said novel intermediate, by treating with 5-chlorothiophene carbonyl chloride to form the rivaroxaban derivatives of formula (B). The obtained formula (B) further treated with acid to form rivaroxaban.
本发明涉及一种新型中间体,公式(A)的制备方法,用于
利伐沙班的制备方法。进一步地,本发明涉及利用所述新型中间体制备
利伐沙班的方法,通过用5-
氯硫苯甲酰氯处理来形成公式(B)的
利伐沙班衍
生物。所得到的公式(B)再经过酸处理形成
利伐沙班。