申请人:SOLDEVILLA MADRID Nuria
公开号:US20120004239A1
公开(公告)日:2012-01-05
The present invention provides an improved process for preparing a compound of formula (IIIA), an intermediate of the synthesis of varenicline. Also, the present invention provides an improved process for preparing varenicline, or a pharmaceutically acceptable salt or solvate thereof. Furthermore, the present invention provides a process for decolorizing varenicline, or a salt or solvate thereof. Still further, the present invention provides a process of preparing varenicline L-tartrate with improved yield. Still further, the present invention relates to the use of compound of formula (V), or a salt or solvate thereof, as a reference marker and reference standard for assessing the purity of varenicline, or a salt or solvate thereof.
本发明提供了一种改进的制备式(IIIA)化合物的方法,该化合物是瓦伦尼克林合成的中间体。此外,本发明提供了一种改进的制备瓦伦尼克林或其药学上可接受的盐或溶剂的方法。此外,本发明提供了一种脱色瓦伦尼克林或其盐或溶剂的方法。此外,本发明还提供了一种制备瓦伦尼克林-L-酒石酸盐的方法,其收率得到了改善。此外,本发明涉及使用式(V)化合物或其盐或溶剂作为参考标记和参考标准来评估瓦伦尼克林或其盐或溶剂的纯度。