Synthesis 2024; 56(15): 2339-2346
DOI: 10.1055/a-2284-9845
paper

Photoredox-Catalyzed Oxidative C–H Alkylation of Glycine Derivatives with 4-Alkyl-1,4-dihydropyridines

Madala Hari Babu
a   College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
,
Eunbin Jang
b   College of Pharmacy, Chungnam National University, Daejeon 34134, Republic of Korea
,
Hyesu Jang
b   College of Pharmacy, Chungnam National University, Daejeon 34134, Republic of Korea
,
Sang Kyum Kim
b   College of Pharmacy, Chungnam National University, Daejeon 34134, Republic of Korea
,
Jaehoon Sim
a   College of Pharmacy, Kyung Hee University, Seoul 02447, Republic of Korea
c   Department of Regulatory Science, Graduate School, Kyung Hee University, Seoul 02447, Republic of Korea
d   Institute of Regulatory Innovation through Science, Kyung Hee University, Seoul 02447, Republic of Korea
› Institutsangaben
This work was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) (No. 2021R1C1C1010044) and a grant from the National Institute of Food and Drug Safety Evaluation in 2023 (21153MFDS601).


Abstract

Oxidative α-C(sp3)–H alkylation of N-arylated glycine derivatives with 4-alkyldihydropyridine derivatives (alkyl-DHPs) as versatile alkyl radical precursors has been developed. Utilizing visible-light-driven photoredox catalysis and ammonium persulfate as an oxidizing agent, this methodology facilitates the site-selective alkylation of glycine derivatives, enabling the site-selective alkylation of peptides. The reaction exhibits broad substrate scope, including various alkyl radicals and acid-labile functional groups. This approach expands the synthetic toolbox in peptide chemistry, offering a mild and efficient method for the synthesis of modified peptides.

Supporting Information



Publikationsverlauf

Eingereicht: 14. Februar 2024

Angenommen nach Revision: 11. März 2024

Accepted Manuscript online:
11. März 2024

Artikel online veröffentlicht:
02. April 2024

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