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 ringexpansion 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