The present invention relates to a process for the preparation of 5-chloro-N-( (5S)-2-oxo-3-[ 4-(3-oxo-4-morpholinyl) phenyfj-l, 3-oxazolidin-5-yl} methyl)-2-thiophene-25 carboxamide (I). In an aspect, the present invention relates to a process for the preparation of 5-chloro-N((5S)-2-oxc-3-[ 4-(3-oxo-4-morpholinyl) phenyl]: 1, 3-oxazolidin-5-yl} methyl)-2-thiophenecarboxamide of formula (I). Hence, there is a need to provide improved process for the preparation of rivaroxaban, which avoids the use of hazardous, expensive chemicals and also to avoid the formation of isomeric and other process related impurities while affording the compound desired yield and purity.
本发明涉及一种制备5-
氯-N-((5S)-2-氧代-3-[4-(3-氧代-4-吗啉基)苯基]-1,3-
噁唑烷-5-基}甲基)-2-
噻吩-2-羧酰胺(I)的方法。在一个方面,本发明涉及一种制备式(I)的5-
氯-N-((5S)-2-氧代-3-[4-(3-氧代-4-吗啉基)苯基]:1,3-
噁唑烷-5-基}甲基)-2-
噻吩羧酰胺的方法。因此,需要提供一种改进的制备
利伐沙班的方法,避免使用危险、昂贵的
化学品,并避免形成同分异构体和其他与工艺相关的杂质,同时获得所需化合物的产率和纯度。