Selectivity of the biooxygenation of N-phenylcarbamates by the fungus Beauveria bassiana
作者:Sylke Pietz、Dörthe Wölker、Günter Haufe
DOI:10.1016/s0040-4020(97)10148-x
日期:1997.12
described. Based on the observed hydroxylation positions and on earlier results of oxygenations using this fungus, a modified distance model for hydroxylations is proposed. The mode of binding of the substrate to the enzyme's active site depends on the intrinsic structure and electronic properties of its electron-rich group. The regio- and stereochemistry of hydroxylation, however, is determined mainly
与生物转化白僵菌的顺- 1,5-二甲基双环[3.2.1]辛-8-基- ñ -phenylcarbamate(11),其抗-异构体13和cyclooctyl- Ñ -phenylcarbamate 31描述。基于观察到的羟基化位置和使用这种真菌的早期氧化结果,提出了一种改进的羟基化距离模型。底物与酶活性位点的结合方式取决于其富电子基团的固有结构和电子性质。然而,羟基化的区域和立体化学主要取决于烃部分的结构,即与锚定基团的特定间隙。这表示为直接附着在碳环上的氧与可能被取代的氢之间的距离约为5.5。