Kinetic resolution of aliphatic acyclic β-hydroxyketones by recombinant whole-cell Baeyer–Villiger monooxygenases—Formation of enantiocomplementary regioisomeric esters
作者:Jessica Rehdorf、Alenka Lengar、Uwe T. Bornscheuer、Marko D. Mihovilovic
DOI:10.1016/j.bmcl.2009.05.014
日期:2009.7
substrates in the enzymatic kinetic and regioselective Baeyer–Villiger oxidation catalyzed by 12 Baeyer–Villiger monooxygenases from different bacterial origin. Excellent enantioselectivities (E >100) could be observed with 4-hydroxy-2-ketones. After acyl migration, the ester undergoes hydrolysis followed by the formation of optically active 1,2-diols. Furthermore, resolution of 5-hydroxy-3-ketones gave
研究了一组不同的线性脂族β-羟基酮作为底物,这些底物是由12种不同细菌来源的Baeyer-Villiger单加氧酶催化的酶动力学和区域选择性Baeyer-Villiger氧化作用的。用4-羟基-2-酮可以观察到极好的对映选择性(E > 100)。酰基迁移后,酯进行水解,然后形成光学活性的1,2-二醇。此外,通过5-羟基-3-酮的拆分,可以得到“异常”酯,从而扩大了这些酶在有机化学中的适用性。另外,注意到,几种底物被不同的酶以对映体互补的方式并具有高光学纯度被转化。