Biocatalytic One-Carbon Ring Expansion of Aziridines to Azetidines via a Highly Enantioselective [1,2]-Stevens Rearrangement.
Biocatalytic One-Carbon Ring Expansion of Aziridines to Azetidines via a Highly Enantioselective [1,2]-Stevens Rearrangement.
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DOI:
10.1021/jacs.2c00251
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发表时间:
2022-03-23
影响因子:
15
通讯作者:
Arnold, Frances H.
中科院分区:
文献类型:
--
作者:
Miller, David C.;Lal, Ravi G.;Marchetti, Luca A.;Arnold, Frances H.
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 olefins, to perform a [1,2]-Stevens rearrangement. By controlling the fate of the highly reactive aziridinium ylide intermediates, these evolvable biocatalysts promote a transformation which cannot currently be performed using other catalyst classes.
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