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Catalytic Asymmetric Formal Total Synthesis of (2)-Triptophenolide and (+)-Triptolide |
Wen-Dan Xu1,2, Liang-Qun Li1,2, Ming-Ming Li3, Hui-Chun Geng1,2, Hong-Bo Qin1 |
1. State Key Laboratory of Photochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, People's Republic of China; 2. University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China; 3. Yunnan Baiyao Group Corporation Limited, Kunming 650032, People's Republic of China |
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Abstract Catalytic asymmetric formal synthesis of (-)-Triptophenolide and (+)-Triptolide have been achieved. Key reaction involves Palladium catalyzed asymmetric conjugate addition of aryl boronic acid to 3-methyl cyclohexe-1-none to form quaternary carbon. Claisen rearrangement and subsequent aldol reaction furnished trans-decaline key intermediate, which assured a formal total synthesis of (-)-Triptophenolide and (+)-Triptolide.
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Keywords
Total synthesis
Catalytic asymmetric
Triptophenolide
Triptolide
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Fund:The manuscript was written through contributions of all authors |
Issue Date: 08 February 2018
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