PREPARATION METHOD FOR RIVASTIGMINE, INTERMEDIATES THEREOF, AND PREPARATION METHOD FOR SAID INTERMEDIATES
申请人:Zhang Fuli
公开号:US20140073809A1
公开(公告)日:2014-03-13
The present invention provides the preparation method for (S)-3-(1-(dimethylamino)ethyl)phenyl ethyl(methyl)carbamate (formula X compound), the preparation methods for its intermediates (S)-1-(3-methoxyphenyl)-N,N-dimethyl-N—((S)-1-phenylethyl)ethanaminium (formula VI compound), (S)-1-(3-hydroxyphenyl)-N,N-dimethyl-N—((S)-1-phenylethyl)ethanaminium (formula VIII compound) and (S)-1-(3-(ethyl(methyl)carbamoyloxy)phenyl)-N,N-dimethyl-N—((S)-1-phenylethyl)ethanaminium (formula IX compound), as well as the method for using above mentioned formula IX compound to prepare rivastigmine which can be used for the treatment of Alzheimer's disease. The preparation method for rivastigmine has a reasonable synthetic design with convenient source of raw materials and high total yield, and the product resulted has high chemical and optical purity, which makes it easy for large-scale. industrial production.
本发明提供了(S)-3-(1-(二甲基氨基)乙基)苯基乙基(甲基)氨基甲酸酯(化合物X的结构)的制备方法,以及其中间体(S)-1-(3-甲氧基苯基)-N,N-二甲基-N-((S)-1-苯乙基)乙胺盐(化合物VI的结构)、(S)-1-(3-羟基苯基)-N,N-二甲基-N-((S)-1-苯乙基)乙胺盐(化合物VIII的结构)和(S)-1-(3-(乙基(甲基)氨基甲酰氧基)苯基)-N,N-二甲基-N-((S)-1-苯乙基)乙胺盐(化合物IX的结构)的制备方法,以及利用上述化合物IX制备利伐替林的方法,利伐替林可用于治疗阿尔茨海默病。利伐替林的制备方法具有合理的合成设计,原料来源便利,总产率高,所得产品具有高化学和光学纯度,便于大规模工业生产。