The chiral compound S-5-substituted-N-2′-(thienyl-2-yl-)ethyl-tetralin-2-amine or its chiral acid salts and preparation method thereof are disclosed, and the method for preparing Rotigotine by using the chiral compound is also disclosed. Racemic 5-substituted-N-2′-(thien-2-yl-)ethyl-tetralin-2-amine (compound 1) is resolved by using a conventional chiral acid to obtain an optically pure chiral acid salt of S-5-substituted-N-2′-(thien-2-yl-)ethyl-tetralin-2-amine, which is then dissociated to obtain S-5-substituted-N-2′-(thien-2-yl-)ethyl-tetralin-2-amine (compound 2). The compound 2 or chiral acid salt thereof is alkylated and deprotected to produce rotigotine (compound 5).
本发明公开了手性化合物S-5-取代-N-2′-(
噻吩-2-基)-乙基-四氢
萘-2-胺及其手性酸盐及其制备方法,并公开了利用该手性化合物制备罗地平的方法。利用传统手性酸将外消旋的5-取代-N-2′-(
噻吩-2-基)-乙基-四氢
萘-2-胺(化合物1)分离得到S-5-取代-N-2′-(
噻吩-2-基)-乙基-四氢
萘-2-胺的光学纯手性酸盐,然后解离得到S-5-取代-N-2′-(
噻吩-2-基)-乙基-四氢
萘-2-胺(化合物2)。化合物2或其手性酸盐经烷基化和脱保护反应得到罗地平(化合物5)。