Promiscuous Substrate Binding Explains the Enzymatic Stereo- and Regiocontrolled Synthesis of Enantiopure Hydroxy Ketones and Diols
作者:Marcela Kurina-Sanz、Fabricio R. Bisogno、Iván Lavandera、Alejandro A. Orden、Vicente Gotor
DOI:10.1002/adsc.200900218
日期:2009.8
Regio- and stereoselective reductions of several diketones to afford enantiopure hydroxy ketones or diols were accomplished using isolated alcohol dehydrogenases (ADHs). Results could be rationalised taking into account different (promiscuous) substrate-binding modes in the active site of the enzyme. Furthermore, interesting natural cyclic diketones were also reduced with high regio- and stereoselectivity
使用分离的醇脱氢酶(ADHs)可实现几种二酮的区域和立体选择性还原,得到对映纯的羟基酮或二醇。考虑到酶活性位点中不同(混杂)的底物结合模式,可以合理化结果。此外,有趣的天然环状二酮也以高的区域选择性和立体选择性被还原。由于这些ADH催化过程的准不可逆性,通过使用少量过量的氢供体(2-丙醇)减少了本研究中使用的1,2-和1,3-二酮。因此,使用较少量的共衬底,可以容易地实现放大。