Broadening the scope of Baeyer–Villiger monooxygenase activities toward α,β-unsaturated ketones: a promising route to chiral enol-lactones and ene-lactones
N'-dioxide-Sc(III) complex catalysts. The BV oxidations of prochiral cyclohexanones and cyclobutanones afforded series of optically active ε- and γ-lactones, respectively, in up to 99% yield and 95% ee. Meanwhile, the kinetic resolution of racemic 2-arylcyclohexanones was also realized via an abnormal BV oxidation. Enantioenriched 3-aryloxepan-2-ones, whose formation is counter to the migratoryaptitude, were
Functional divergence between closely related Baeyer-Villiger monooxygenases from Aspergillus flavus
作者:F.M. Ferroni、M.S. Smit、D.J. Opperman
DOI:10.1016/j.molcatb.2014.05.015
日期:2014.9
well-characterized BVMOs including cyclohexanone, phenylacetone and 4-hydroxyacetophenone monooxygenase. Building on the Grogan classification/clustering of BVMOs, we have designated this new group of BVMOs, Group VI. Group VI BVMOs show an early divergence from the cyclopentanone monooxygenase (CPMO) type BVMOs (Group I). Substrate profiling using cyclic, bicyclic, aliphatic and aryl ketones show a clear divergence
Genome mining reveals new bacterial type I Baeyer-Villiger monooxygenases with (bio)synthetic potential
作者:Romina D. Ceccoli、Dario A. Bianchi、María Ayelén Carabajal、Daniela V. Rial
DOI:10.1016/j.mcat.2020.110875
日期:2020.5
monooxygenases (BVMOs) are oxidorreductases that catalyze the oxidation of ketones in a very selective manner. By genomemining we detected seven putative type I BVMOs in Bradyrhizobium diazoefficiens USDA 110. As we established the phylogenetic relationships among them and with other type I BVMOs, we found out that they belong to different clades of the phylogenetic tree. Thus, we decided to clone and
摘要 Baeyer-Villiger 单加氧酶 (BVMOs) 是一种氧化还原酶,以非常选择性的方式催化酮的氧化。通过基因组挖掘,我们在重氮慢生根瘤菌 USDA 110 中检测到了七个推定的 I 型 BVMO。当我们建立它们之间以及与其他 I 型 BVMO 的系统发育关系时,我们发现它们属于系统发育树的不同进化枝。因此,我们决定克隆并异源表达其中的五个。其中三个,每个来自不同的系统发育组,作为可溶性蛋白质获得,使我们能够继续进行它们的生物催化评估和酶学表征。至于底物范围和选择性,我们观察到三种 BVMO 之间的互补行为。
Assessing the Substrate Selectivities and Enantioselectivities of Eight Novel Baeyer−Villiger Monooxygenases toward Alkyl-Substituted Cyclohexanones
作者:Brian G. Kyte、Pierre Rouvière、Qiong Cheng、Jon D. Stewart
DOI:10.1021/jo030253l
日期:2004.1.1
4-alkyl-substituted cyclohexanones tested, enzymes were discovered that afforded each of the corresponding (S)-lactones in ≥98% ee. This was also true for the 2-alkyl-substituted cyclohexanones examined. The situation was more complex for 3-akyl-substituted cyclohexanones. In a few cases, single Baeyer−Villiger monooxygenases possessed both high regio- and enantioselectivities toward these compounds