Improvement of a Stereoselective Biocatalytic Synthesis by Substrate and Enzyme Engineering: 2-Hydroxy-(4′-oxocyclohexyl)acetonitrile as the Model
作者:Manuela Avi、Romana M. Wiedner、Herfried Griengl、Helmut Schwab
DOI:10.1002/chem.200800609
日期:——
regard to substrate range, reaction scope, and insufficient selectivity with unnatural compounds. These shortcomings can be challenged by enzyme and/or substrate engineering, which are employed to alter substrate specificity and enhance the enzyme selectivity toward unnatural substrates. Herein, these two approaches are coupled to improve the hydroxynitrile lyase catalyzed synthesis of 2-hydroxy-(4
即使生物催化正得到越来越多的应用,它仍必须在合成化学中获得广泛的应用。这样做的原因是酶在底物范围,反应范围以及对非天然化合物的选择性不足方面具有局限性。这些缺点可以通过酶和/或底物工程来挑战,所述酶和/或底物工程被用来改变底物特异性并增强酶对非天然底物的选择性。在本文中,这两种方法相结合以改善羟腈裂合酶催化的2-羟基-(4'-氧代环己基)乙腈的合成(4)。酮官能团被屏蔽为烯醇醚,而巴西橡胶树的氧化腈酶则针对该被屏蔽的底物进行了工程改造,从而使该产品具有较高的光学纯度,并大大降低了所需的酶量。