Volume 135, Issue 51 e202313687
Zuschrift

Copper-Catalyzed Oxygenative Skeletal Rearrangement of Tetrahydro-β-carbolines Using H2O and O2 as Oxygen Sources

Yu-Sheng Peng

Yu-Sheng Peng

State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, 550014 Guiyang, P. R. China

Natural Products Research Center of Guizhou Province, 550014 Guiyang, P. R. China

These authors contributed equally to this work.

Search for more papers by this author
Wei Wang

Wei Wang

National Key Laboratory of Green Pesticide, State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for Research and Development of Fine Chemicals, Guizhou University, 550025 Guiyang, P. R. China

These authors contributed equally to this work.

Search for more papers by this author
Jun Shi

Jun Shi

State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, 550014 Guiyang, P. R. China

Natural Products Research Center of Guizhou Province, 550014 Guiyang, P. R. China

These authors contributed equally to this work.

Search for more papers by this author
Wei Wu

Wei Wu

State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, 550014 Guiyang, P. R. China

Natural Products Research Center of Guizhou Province, 550014 Guiyang, P. R. China

Search for more papers by this author
Jun-Rong Song

Jun-Rong Song

State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, 550014 Guiyang, P. R. China

Natural Products Research Center of Guizhou Province, 550014 Guiyang, P. R. China

Search for more papers by this author
Wei-Dong Pan

Wei-Dong Pan

State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, 550014 Guiyang, P. R. China

Natural Products Research Center of Guizhou Province, 550014 Guiyang, P. R. China

Search for more papers by this author
Prof. Dr. Ge-Fei Hao

Corresponding Author

Prof. Dr. Ge-Fei Hao

National Key Laboratory of Green Pesticide, State Key Laboratory Breeding Base of Green Pesticide and Agricultural Bioengineering, Key Laboratory of Green Pesticide and Agricultural Bioengineering, Ministry of Education, Center for Research and Development of Fine Chemicals, Guizhou University, 550025 Guiyang, P. R. China

Search for more papers by this author
Prof. Dr. Hai Ren

Corresponding Author

Prof. Dr. Hai Ren

State Key Laboratory of Functions and Applications of Medicinal Plants, Guizhou Medical University, 550014 Guiyang, P. R. China

Natural Products Research Center of Guizhou Province, 550014 Guiyang, P. R. China

Search for more papers by this author
First published: 10 November 2023

Abstract

Herein, we report an unprecedented skeletal rearrangement reaction of tetrahydro-β-carbolines enabled by copper-catalyzed single-electron oxidative oxygenation, in which H2O and O2 act as oxygen sources to generate a unique 2-hydroxyl-3-peroxide indoline intermediate. The synthetic reactivity of 2-hydroxyl-3-peroxide indoline species was demonstrated by a unique multi-step bond cleavage and formation cascade. Using a readily available copper catalyst under open-air conditions, highly important yet synthetically difficult spiro[pyrrolidone-(3,1-benzoxazine)] products were obtained in a single operation. The synthetic utility of this methodology is demonstrated by the efficient synthesis of the natural products donaxanine and chimonamidine, as well as the 3-hydroxyl-pyrroloindoline scaffold, in just one or two steps.

Data Availability Statement

The data that support the findings of this study are available in the supplementary material of this article.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.