The present invention relates to a new process for the preparation of optically active alcohols represented by the general formula 2 and their esters represented by the general formula 3 in scheme 1. In more detail, this invention relates to the process for the preparation of optically active alcohols and their esters which are used as pharmaceutical intermediates by reacting the hydroxyl group stereospecifically by lipase after adding racemic alcohols represented by the general formula 1 and succinic anhydride as an acylating agent to the organic solvent. According to this invention, the primary hydroxyl group of 1,2-diols is transformed by other functional group and the secondary hydroxyl group is esterified stereospecifically with succinic anhydride as an acylating agent. Optically active alcohols and their esters of high optical purity in high yield can be produced by using succinic anhydride as an acylating agent because alcohols can be separated from their esters more easily than those of other conventional methods.
本发明涉及一种制备光学活性醇的新工艺,其通式为2,以及它们的酯,其通式为3,如图1所示。更详细地说,本发明涉及一种制备光学活性醇及其酯的工艺,通过在有机溶剂中加入通式1的混合醇和
琥珀酸酐作为酰化试剂后,通过
脂肪酶立体特异性地反应羟基基团。根据本发明,1,2
-二醇的主要羟基基团被转化为其他官能团,次要羟基基团通过
琥珀酸酐作为酰化试剂被立体特异性地酯化。由于醇可以比其他传统方法更容易地与它们的酯分离,因此可以使用
琥珀酸酐作为酰化试剂生产高光学纯度和高收率的光学活性醇及其酯。