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)
氨基甲酸乙酯(式 X 化合物)的制备方法、其中间体(S)-1-(3-
甲氧基苯基)-N,N-二甲基-N-((S)-1-苯基乙基)乙
铵(式 VI 化合物)、(S)-1-(3-羟基苯基)-N、和(S)-1-(3-(乙基(甲基)
氨基甲酰氧基)苯基)-N,N-二甲基-N-((S)-1-苯基乙基)乙
铵(式 IX 化合物),以及使用上述式 IX 化合物制备可用于治疗阿尔茨海默病的利伐斯的明的方法。利伐斯的明的制备方法合成设计合理,原料来源方便,总收率高,所得产品
化学纯度和光学纯度高,易于大规模工业化生产。