申请人:ZENTIVA KS
公开号:WO2014075648A1
公开(公告)日:2014-05-22
The object of the present solution provides a method preparing apixaban of formula (I) in which ethyl 6-(4-iodophenyl)- 1 -(4-methoxyphenyl)-7-oxo-4,5,6,7-tetrahydro-1H-pyrazolo [3,4- c]pyridine-3-carboxylate of formula (III) is reacted with piperidin-2-one of formula (IV) in the presence of a base and a ligand and under catalysis by copper or by copper (II) ions, wherein a phosphoric acid salt is used as the base and an amine from the group of 1,2-diamines is used as the ligand in an aprotic solvent, and ethyl 1-(4-methoxyphenyl)-7-oxo-6-[4-(2-oxo-1- piperidin-1-yl)phenyl] -4, 5,6,7-tetrahydro-1H-pyrazol-[3,4-c]pyridine-3-carbvoxylate is prepared, which is converted, by reaction with ammonia in a suitable solvent, to apixaban of formula (I), which is isolated and optionally crystallized.
本解决方案的目的是提供一种制备化合物apixaban的方法,其中以式(I)的
乙酸6-(4-碘苯基)-1-(4-甲氧基苯基)-7-氧代-4,5,6,7-四氢-1H-吡唑并[3,4-c]吡啶-3-羧酸乙酯的式(III)与式(IV)的
哌啶-2-酮在碱和
配体的存在下,通过
铜或
铜(II)离子的催化反应,其中
磷酸盐被用作碱,1,2-二
胺类化合物被用作
配体,在无极性溶剂中制备了
乙酸1-(4-
甲氧基苯基)-7-氧代-6-[4-(2-氧代-1-
哌啶-1-基)苯基]-4,5,6,7-四氢-
1H-吡唑并[3,4-c]吡啶-3-羧基
乙酸酯,通过与适当溶剂中的
氨反应,将其转化为式(I)的apixaban,然后对其进行分离和可选择结晶。