Regio- and Stereoselective Hydroxylation of Optically Active α-Ionone Enantiomers by Engineered Cytochrome P450 BM3 Mutants
作者:Harini Venkataraman、Stephanie B. A. de Beer、Daan P. Geerke、Nico P. E. Vermeulen、Jan N. M. Commandeur
DOI:10.1002/adsc.201200067
日期:2012.8.13
hydroxylation of an unactivated CH bond is a crucial step in the synthesis of fine chemicals such as hydroxylated terpenoids. In the present study, the ability of 40 cytochrome P450 BM3 mutants to perform the regio- and stereoselective hydroxylation of α-ionone has been investigated. Based on their activity and selectivity to produce 3-hydroxy-α-ionone from racemic α-ionone, 6 BM3 mutants were selected
未活化的CH键的选择性羟基化是精细化学品(例如羟基化的萜类化合物)的合成中的关键步骤。在本研究中,已经研究了40种细胞色素P450 BM3突变体执行α-紫罗兰酮的区域和立体选择性羟基化的能力。基于它们从外消旋α-紫罗兰酮生产3-羟基-α-紫罗兰酮的活性和选择性,选择了6个BM3突变体。在这些突变体中,有3个突变体(M01 A82W,M11 A82W和M11 V87I)显示出对反式-3-羟基-α-紫罗兰酮形成的高选择性,而其他3个突变体(M11 L437N,M11 L437S和M11 L437T)形成了几乎相等的量顺式-3-羟基-和反式3-羟基-α-紫罗兰酮。孵育各对映体表明M11 L437N,M11 L437S和M11 L437T表现出生产(3相反的立体选择性小号,6小号) -羟基α紫罗兰酮与(6小号) -对映体和(3小号,6 - [R ) -羟基α-紫罗兰酮与(6 R)-对映异构体。因此