The present invention discloses the process for the preparation of candesartan cilexetil comprising the steps of hydrogenation of N02group of 1-(((cyclohexyloxy)carbonyl)oxy)ethyl 2-((tert-butoxycarbonyl)((2'-(1-tntyl-1H-tetrazol-5-yl)-[1,1'-biphenyl]-4-yl)methyl)amino)-3-nitrobenzoate by using a catalyst in an organic solvent, subsequent cleavage of the N-Boc group under acidic condition, followed by isolation of solid 1-(((cyclohexyloxy)carbonyl) oxy)ethyl 2-(((2'-(l H-tetrazol-5-yl)-[1,1'-bipheny|]-4-yl)methyl)amino)-3-aminobenzoate in the form of any pharmaceutically acceptable salt and ring closure by using tetraethyl orthocarbonate in an organic solvent to obtain the final product candesartan cilexetil.
本发明公开了
卡托普利酯的制备方法,包括以下步骤:在有机溶剂中使用催化剂对1-(((环己氧基)羰基)氧基)乙基2-((叔丁氧羰基)((2'-(
1-甲基-1H-四唑-5-基)-[1,1'-
联苯]-4-基)甲基)
氨基)-
3-硝基苯甲酸酯的N02基团进行氢化,随后在酸性条件下裂解N-Boc基团,然后以任何药用可接受的盐的形式分离固体1-(((环己氧基)羰基)氧基)乙基2-(((2'-(1 H-
四唑-5-基)-[1,1'-
联苯]-4-基)甲基)
氨基)-3-
氨基
苯甲酸酯,并在有机溶剂中使用正
乙酸四
乙酯进行环合,得到最终产品
卡托普利酯。