Biocatalytic One-Carbon Ring Expansion of Aziridines to Azetidines via a Highly Enantioselective [1,2]-Stevens Rearrangement
作者:David C. Miller、Ravi G. Lal、Luca A. Marchetti、Frances H. Arnold
DOI:10.1021/jacs.2c00251
日期:2022.3.23
We report enantioselective one-carbon ring expansion of aziridines to make azetidines as a new-to-nature activity of engineered “carbene transferase” enzymes. A laboratory-evolved variant of cytochrome P450BM3, P411-AzetS, not only exerts unparalleled stereocontrol (99:1 er) over a [1,2]-Stevens rearrangement but also overrides the inherent reactivity of aziridinium ylides, cheletropic extrusion of
我们报道了氮丙啶的对映选择性单碳环扩张,以制造氮杂环丁烷,这是工程“卡宾转移酶”的一种全新活性。细胞色素 P450 BM3的实验室进化变体 P411-AzetS 不仅对 [1,2]-Stevens 重排发挥无与伦比的立体控制 (99:1 er),而且还克服了氮丙啶叶立德的固有反应性、烯烃的螯合挤出、进行 [1,2]-Stevens 重排。通过控制高反应性氮丙啶叶立德中间体的命运,这些可进化生物催化剂促进了目前使用其他催化剂类别无法进行的转化。