The invention relates to a process for preparing enantiomerically pure alcohol of the formula 1, which comprises (i) reducing the ketone of the formula 3 to the racemic alcohol of the formula 4, (ii) enantioselectively acylating the racemic alcohol of the formula 4 with succinic anhydride in the presence of a lipase to give the succinic semiester of the formula 7, (iii) separating off the succinic semiester of the formula 7 from the unreacted enantiomer of the formula 4, (iv) reacting the enantiomerically pure alcohol of the formula 4 with methylamine to give the enantiomerically pure alcohol of the formula 1.
该发明涉及一种制备式1对映纯醇的过程,包括(i)将式3的酮还原为式4的消旋醇,(ii)在
脂肪酶存在下对式4的消旋醇进行对映选择性酰化,以得到式7的
琥珀酸半酯,(iii)将式7的
琥珀酸半酯与未反应的式4的对映体分离,(iv)将对映纯醇式4与
甲胺反应,得到对映纯醇式1。