Chemoselective Late-Stage Functionalization of Peptides via Photocatalytic C2-Alkylation of Tryptophan.

Chemoselective Late-Stage Functionalization of Peptides via Photocatalytic C2-Alkylation of Tryptophan.
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DOI:
10.1021/acs.orglett.3c01795
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发表时间:
2023-07-28
期刊:
影响因子:
5.2
通讯作者:
Mitchell, Nicholas J.
Mitchell, Nicholas J.
中科院分区:
化学1区
文献类型:
--
作者:
Lee, Joanna C.;Cuthbertson, James D.;Mitchell, Nicholas J.

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Across eukaryotic proteomes, tryptophan is the least abundant of the 20 canonical amino acids, which makes it an ideal chemical handle for the late-stage functionalization of peptide and protein scaffolds with minimal production of undesired isoforms. Herein, we report the photocatalytic C2-alkylation of tryptophan using bromodifluoroacetate/acetamide-derived radical precursors. This rapid visible-light-mediated reaction is additive-free, operationally simple, and tolerates diverse functionality. We demonstrate the late-stage modification of a variety of complex peptides, including examples of biological significance.
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