Enzyme-mediated enantioselective hydrolysis of cyclic carbonates bearing an unsaturated substituent
作者:Kazutsugu Matsumoto、Yasuhide Nakamura、Megumi Shimojo、Minoru Hatanaka
DOI:10.1016/s0040-4039(02)01628-3
日期:2002.9
A new method for the preparation of optically active five-membered cyclic carbonates bearing an unsaturated substituent via an enzymatic reaction is described. In the examination of the regiospecific recognition of PPL, dl-(E)-4-(1-octenyl)-1,3-dioxolan-2-one is hydrolyzed with higher enantioselectivity. The reaction is also applicable to the racemic (E)-4-[2-(alkoxycarbony)ethenyl]-1,3-dioxolane-2-one
描述了一种通过酶反应制备带有不饱和取代基的旋光五元环状碳酸酯的新方法。在对PPL的区域特异性识别的检查中,dl-(E)-4-(1-辛烯基)-1,3-二氧戊环-2-酮被水解而具有更高的对映选择性。该反应也适用于外消旋的(E)-4- [2-(烷氧基碳)乙烯基] -1,3-二氧戊环-2-酮,一种在有机合成中有用的α,β-不饱和酯。尽管酯基位于距不对称碳较远的位置,但将异丙基引入酯部分可提供最高的对映选择性。