Volume 43, Issue 9 pp. 995-1000
Concise Report

Phosphine-Catalyzed Divergent γ,γ- and ε,γ-Umpolung Domino Additions of Bisoxindoles with Allenoates: Construction of Vicinal All-Carbon Quaternary Stereocenters and Formal Total Synthesis of Dimeric Cyclotryptamine Alkaloids

Yufei Zhang

Yufei Zhang

Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang, Hubei, 443002 China

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Jing Chen

Jing Chen

Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang, Hubei, 443002 China

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Hui Yao

Corresponding Author

Hui Yao

Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang, Hubei, 443002 China

Hubei Three Gorges Laboratory, Yichang, Hubei, 443007 China

E-mail: [email protected]; [email protected]; [email protected]Search for more papers by this author
Yuanbin Wang

Yuanbin Wang

Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang, Hubei, 443002 China

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Hongyu Liu

Hongyu Liu

Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang, Hubei, 443002 China

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Long Wang

Long Wang

College of Materials and Chemical Engineering, Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials, China Three Gorges University, Yichang, Hubei, 443002 China

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Nianyu Huang

Corresponding Author

Nianyu Huang

Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang, Hubei, 443002 China

Hubei Three Gorges Laboratory, Yichang, Hubei, 443007 China

E-mail: [email protected]; [email protected]; [email protected]Search for more papers by this author
Nengzhong Wang

Corresponding Author

Nengzhong Wang

Hubei Key Laboratory of Natural Products Research and Development, College of Biological and Pharmaceutical Sciences, China Three Gorges University, Yichang, Hubei, 443002 China

Hubei Three Gorges Laboratory, Yichang, Hubei, 443007 China

E-mail: [email protected]; [email protected]; [email protected]Search for more papers by this author
First published: 25 January 2025
Citations: 8

Comprehensive Summary

Vicinal all-carbon quaternary stereocenters are widely present in natural products and bioactive molecules. However, the construction of such motif in one step from readily available starting materials remains a significant challenge. Herein, we report a phosphine-catalyzed divergent γ,γ- and ε,γ-umpolung domino addition of bisoxindoles with allenoates. This method serves as a practical tool for the concise synthesis of a series of bisoxindole derivatives bearing sterically hindered vicinal all-carbon quaternary stereocenters under mild reaction conditions. The applicability of this novel method was demonstrated with the gram-scale synthesis of three known advanced intermediates for the total syntheses of calycanthine, chimonanthine and folicanthine. image

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