作者:Maxim I Youshko、Fred van Rantwijk、Roger A Sheldon
DOI:10.1016/s0957-4166(01)00563-8
日期:2001.12
organic medium. The commonly used vinyl and isopropenyl esters proved to be unsuitable acyl donors because rapid uncatalysed aminolysis occurred in the presence of these additives. The unwanted aminolysis reaction could be suppressed by performing the enzymatic reaction in tert-butyl methyl ether medium with methyl 2-methoxyacetate as the acyl donor. We found that chiral amines were acylated with poor to
来自米曲霉的氨基酰化酶(EC 3.5.1.14)介导了在无水有机介质中一系列伯芳基烷基胺和氨基醇中伯氨基的酰化作用。事实证明,常用的乙烯基和异丙烯基酯不适合用作酰基供体,因为在这些添加剂的存在下会发生快速的未催化氨解。通过在叔丁基甲基醚介质中用2-甲氧基乙酸甲酯作为酰基供体进行酶促反应,可以抑制不需要的氨解反应。我们发现手性胺被酰化的对映体选择性差到中等,这与相应醇通常观察到的定量对映体区别相反。