The present invention provides novel processes for purifying anastrozole, devoid of using liquid chromatography. The purification processes are via the isolated anastrozole salt forms, either by crystallization or by selective acidic extractions, and optionally in both cases, converting the purified anastrozole salt to anastrozole base. Also provided is an improved process for the synthesis of anastrozole, which is obtained by alkylating the isolated and purified starting material 3,5-bis(2-cyanoprop-2-yl)benzylbromide, the process being devoid of using toxic, hazardous and environmental unfriendly solvents and reagents.
本发明提供了一种新型的
阿那曲唑纯化工艺,不需要使用
液相色谱。纯化过程是通过分离的
阿那曲唑盐形式实现的,可以通过结晶或选择性酸性萃取来实现,而且在这两种情况下都可以将纯化后的
阿那曲唑盐转化为
阿那曲唑碱。此外,本发明还提供了一种改进的合成
阿那曲唑的工艺,该工艺通过烷基化分离和纯化起始材料3,5-双(2-
氰基丙-2-基)苯基
溴化物而获得,该过程不使用有毒、危险和环境不友好的溶剂和试剂。