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    • 5. 发明申请
    • A NEW PROCESS FOR THE PREPARATION OF CANDESARTAN CILEXETIL
    • 一种制备CANDESARTAN CILEXETIL的新工艺
    • WO2015090635A1
    • 2015-06-25
    • PCT/EP2014/066379
    • 2014-07-30
    • FARMA GRS, D.O.O.
    • ZUPANCIC, SilvoKRALJ, DavidZUPET, Rok
    • C07D401/10C07D257/04
    • C07D401/10C07D257/04
    • The present invention discloses the process for the preparation of candesartan cilexetil comprising the steps of hydrogenation of N0 2 group of 1-(((cyclohexyloxy)carbonyl)oxy)ethyl 2-((tert-butoxycarbonyl)((2'-(1-tntyl-1 H -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'- b i p h en y | ]- 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.
    • 本发明公开了制备坎地沙坦碳酸酯的方法,包括将2 - ((叔丁氧羰基)((2' - (1-叔丁氧基羰基) 1H-四唑-5-基) - [1,1'-联苯] -4-基)甲基)氨基)-3-硝基苯甲酸酯在有机溶剂中使用催化剂,随后在酸性条件下裂解N-Boc基团 ,然后分离固体1 - (((环己氧基)羰基)氧基)2 - (((2' - (1H-四唑-5-基) - [1,1'-联苯基] -4- 吡啶-3-基)甲基)氨基苯甲酸酯,其以任何药学上可接受的盐和闭环形式,通过使用原碳酸四乙酯在有机溶剂中得到最终产物坎地沙坦酯。