Directed (<i>R</i>)- or (<i>S</i>)-Selective Dynamic Kinetic Enzymatic Hydrolysis of 1,2,3,4-Tetrahydroisoquinoline-1-carboxylic Esters
作者:Tihamér A. Paál、Arto Liljeblad、Liisa T. Kanerva、Enikő Forró、Ferenc Fülöp
DOI:10.1002/ejoc.200800789
日期:2008.11
4-tetrahydroisoquinoline-1-carboxylic acid was accomplished through dynamic kinetic resolution in procedures based on CAL-B- or subtilisin Carlsberg-catalysed enantioselective hydrolysis of the corresponding ethyl esters in aqueous NH4OAc buffer at pH 8.5. The products were obtained with high enantiopurity (92–93 % ee) in good yields (85–92 %). (R)-1,2,3,4-Tetrahydroisoquinoline-1-carboxylic acid was obtained
6,7-二甲氧基-1,2,3,4-四氢异喹啉-1-羧酸的两种对映异构体的首次合成是通过基于CAL-B-或枯草杆菌蛋白酶Carlsberg催化对映选择性水解的程序中的动态动力学拆分完成的。相应的乙酯在 pH 8.5 的 NH4OAc 缓冲液中。以良好的产率 (85-92%) 获得具有高对映纯度 (92-93% ee) 的产品。(R)-1,2,3,4-四氢异喹啉-1-羧酸在类似条件下在 CAL-B 催化过程中以高对映体纯度 (98% ee) 和良好的产率 (85%) 获得。 © Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)