Biocatalytic One-Carbon Ring Expansion of Aziridines to Azetidines via a Highly Enantioselective [1,2]-Stevens Rearrangement

Miller, David C. and Lal, Ravi G. and Marchetti, Luca A. and Arnold, Frances H. (2022) Biocatalytic One-Carbon Ring Expansion of Aziridines to Azetidines via a Highly Enantioselective [1,2]-Stevens Rearrangement. Journal of the American Chemical Society, 144 (11). pp. 4739-4745. ISSN 0002-7863. PMCID PMC9022672. doi:10.1021/jacs.2c00251. https://resolver.caltech.edu/CaltechAUTHORS:20210821-140525422

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Abstract

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 P450_(BM3), 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.

Item Type:

Article

Related URLs:

URL	URL Type	Description
https://doi.org/10.1021/jacs.2c00251	DOI	Article
https://doi.org/10.26434/chemrxiv-2021-8fq9b-v3	DOI	Discussion Paper - version 3

ORCID:

Author	ORCID
Miller, David C.	0000-0002-4560-8824
Lal, Ravi G.	0000-0001-6943-4147
Marchetti, Luca A.	0000-0002-6100-4465
Arnold, Frances H.	0000-0002-4027-364X

Additional Information:

© 2022 American Chemical Society. Received: January 8, 2022; Published: March 8, 2022. This research was sponsored by the U.S. Army Research Office and accomplished under contracts W911NF-19-D-0001 and W911NF-19-2-0026 for the Institute for Collaborative Biotechnologies. D.C.M. was supported by a Ruth Kirschstein NIH Postdoctoral Fellowship (F32GM128247). The authors wish to thank Dr. Sabine Brinkmann-Chen, Dr. Nathaniel Goldberg, and Dr. Nicholas Porter for assistance preparing the manuscript. The authors declare no competing financial interest.

Funders:

Funding Agency	Grant Number
Army Research Office (ARO)	W911NF-19-D-0001
Army Research Office (ARO)	W911NF-19-2-0026
NIH Postdoctoral Fellowship	F32GM128247

Subject Keywords:

Carbene compounds, Hydrocarbons, Aziridines, Peptides and proteins, Rearrangement

Issue or Number:

PubMed Central ID:

PMC9022672

DOI:

10.1021/jacs.2c00251

Record Number:

CaltechAUTHORS:20210821-140525422

Persistent URL:

https://resolver.caltech.edu/CaltechAUTHORS:20210821-140525422

Official Citation:

Biocatalytic One-Carbon Ring Expansion of Aziridines to Azetidines via a Highly Enantioselective [1,2]-Stevens Rearrangement. David C. Miller, Ravi G. Lal, Luca A. Marchetti, and Frances H. Arnold. Journal of the American Chemical Society 2022 144 (11), 4739-4745; DOI: 10.1021/jacs.2c00251

Usage Policy:

No commercial reproduction, distribution, display or performance rights in this work are provided.

ID Code:

110345

Collection:

CaltechAUTHORS

Deposited By:

Tony Diaz

Deposited On:

21 Aug 2021 16:57

Last Modified:

13 Jun 2022 23:29

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