期刊
ORGANIC LETTERS
卷 23, 期 7, 页码 2710-2714出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.1c00609
关键词
-
资金
- Soochow University, Taiwan
- National & Local Joint Engineering Research Center of High-throughput Drug Screening Technology [K20201001]
- Ministry-of-Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, Hubei University [KLSAOFM2005]
- [(2,4-dinitrophenoxy)-N-methyl-4]
This study presents a novel visible-light-induced late-stage photoredox C-H amidation method for the modification of N-unprotected indoles and tryptophan-containing peptides, leading to the formation of N-(indol-2-yl)amide derivatives. The mechanism involves the oxidative C-H functionalization of indole with a PS* to PS center dot- cycle, providing a new toolkit for the late-stage modification labeling and peptide-drug conjugation of N-unprotected indole derivatives.
The late-stage functionalization of N-unprotected indoles can be useful for modifying low-molecular-weight drugs and bioactive peptides. Whereas indole carboxamides are valuable in pharmaceutical applications, the preparation N-(indol-2-yl)amides with similar structures continues to be challenging. Herein we report on visible-light-induced late-stage photoredox C-H amidation with N-unprotected indoles and tryptophan-containing peptides, leading to the formation of N-(indol-2-yl)amide derivatives. N-Unprotected indoles and aryloxyamides that contain an electron-withdrawing group could be coupled directly to eosin Y as the photocatalyst by irradiation with a green light-emitting diode at room temperature. Mechanistic studies and density functional theory calculations indicate that the transformation might proceed through the oxidative C-H functionalization of indole with a PS* to PS center dot- cycle. This protocol provides a new toolkit for the late-stage modification labeling and peptide-drug conjugation of N-unprotected indole derivatives.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据