Disclosed is a process for preparing single enantiomers of beta-amino phenylbutyric acid derivatives and pharmaceutically acceptable salts thereof, which affords the desired compounds having special optical configuration. The process comprises a step of chemical synthesis and a step of resolving the optical isomers of beta-amino phenylbutyric acid derivatives with a resolving agent. The resolving step comprises reacting the optical isomers with resolving agents, such as di-para-toluoyl-L-tartaric acid and di-para-toluoyl-D-tartaric acid. The obtained R-beta-amino phenylbutyric acid derivatives (I) have high optical purity, and the total yield of the accumulative resolution of the laevo and the dextro isomer is up to above 70%.
本文揭示了一种制备β-
氨基苯
丁酸衍
生物的单对映体及其药用可接受盐的过程,该过程可获得具有特殊光学构型的所需化合物。该过程包括
化学合成步骤和使用分离剂分离β-
氨基苯
丁酸衍
生物的光学异构体步骤。分离步骤包括将光学异构体与分离剂(如
对二甲苯基-
L-酒石酸和
对二甲苯基-
D-酒石酸)反应。所获得的R-β-
氨基苯
丁酸衍
生物(I)具有较高的光学纯度,左旋异构体和右旋异构体的累积分离总产率可达70%以上。