Kinetic resolution of esters from secondary and tertiary benzylic propargylic alcohols by an improved esterase-variant from Bacillus sp. BP-7
作者:Amanda Fillat、Pedro Romea、F.I. Javier Pastor、Fèlix Urpí、Pilar Diaz
DOI:10.1016/j.cattod.2014.12.041
日期:2015.10
enantiomeric resolution of acetate esters of tertiary alcohols. Variant EstBP7-AGA, bearing two aminoacidic changes in the oxyanion hole, showed an excellent E > 100 enantioselectivity value towards a complex tertiary alcohol acetate (2-(4-pyridyl)-3-butyn-2-yl acetate) at low reaction temperature (4 °C). We here go further in the investigation of such esterase variant by analyzing the kinetic resolution of
我们在最近的工作中描述了芽孢杆菌属的酯酶的合理改进。BP7旨在研究几种酯酶变体对叔醇乙酸酯的对映异构体拆分的效率。变异的EstBP7-AGA在氧阴离子孔中带有两个氨基酸变化,显示出优异的E 在低反应温度(4°C)下对复杂的乙酸叔醇乙酸酯(2-(4-吡啶基)-3-丁炔-2-基乙酸酯)的对映选择性> 100。我们通过分析苄基炔丙基酯的动力学拆分来进一步研究此类酯酶变体,以证明该酶是获得对映体纯的叔醇和仲醇的强大工具,前提是母体苄基炔丙基酯的结构完整性维持酯。了解这种酯酶变体与被测底物的作用方式和相互作用,将使人们产生有趣的药物基础。