Synthesis of Valuable Chiral Intermediates by Isolated Ketoreductases: Application in the Synthesis of α-Alkyl-β-hydroxy Ketones and 1,3-Diols
作者:Dimitris Kalaitzakis、J. David Rozzell、Ioulia Smonou、Spiros Kambourakis
DOI:10.1002/adsc.200606185
日期:2006.9
and in two examples both ketones were reduced to the 1,3-diol. By replacing the α-alkyl substituent with the OAc group, 1-keto-2,3-diols, as well as 1,2,3-triols were synthesized in high optical purities. These enzymatic reactions provide a simple, highly stereoselective and quantitative method for the synthesis of different diastereomers of valuable chiral synthons from non-chiral, easily accessible
描述了通过使用可商购的酮还原酶(KRED)将α-取代的1,3-二酮区域和立体选择性还原为相应的β-酮醇或1,3-二醇。在一个或两个酶促还原步骤中,许多α-单烷基或二烷基取代的对称及非对称二酮的高光学纯度和化学收率得到降低。在大多数情况下,通过使用不同的酶来合成四种可能的α-烷基-β-酮醇非对映异构体中的两个甚至三个,并且在两个实例中,两种酮均还原为1,3-二醇。通过用OAc基团取代α-烷基取代基,可以以高光学纯度合成1-酮-2,3-二醇以及1,2,3-三醇。这些酶促反应提供了一种简单,