Covalently Immobilized Lipases are Efficient Stereoselective Catalysts for the Kinetic Resolution of<i>rac</i>-(5-Phenylfuran-2-yl)-β-alanine Ethyl Ester Hydrochlorides
作者:Botond Nagy、Zsolt Galla、László Csaba Bencze、Monica Ioana Toșa、Csaba Paizs、Enikő Forró、Ferenc Fülöp
DOI:10.1002/ejoc.201700174
日期:2017.5.26
procedure for both analytical- and preparative-scale (S)-selective hydrolysis of several racemic β-amino ester hydrochlorides in NH4OAc buffer (20 mm, pH 5.8) at 30 °C. Enzymatic resolutions were performed with covalently bound lipase AK from Pseudomonas fluorescens and lipase PS from Burkholderia cepacia on Immobead T2-150 as catalyst. Seven out of eight new resolution products were successfully isolated
研究了几种新的、奇异的和不同取代的外消旋-(5-苯基呋喃-2-基)-β-丙氨酸乙酯的脂肪酶催化酶促拆分。鉴于未取代的外消旋-(5-苯基呋喃-2-基)-β-丙氨酸乙酯的结构不稳定性,我们使用该外消旋-杂芳基-3-氨基丙酸乙酯的稳定盐酸盐作为潜在底物以增加范围反应。优化实验揭示了在 NH4OAc 缓冲液(20 毫米,pH 5.8)中,在 30 °C 下对几种外消旋 β-氨基酯盐酸盐进行分析和制备级 (S) 选择性水解的有效程序。使用来自荧光假单胞菌的共价结合脂肪酶 AK 和来自洋葱伯克霍尔德菌的脂肪酶 PS 在 Immobead T2-150 上作为催化剂进行酶促拆分。