期刊
CHEMICAL SCIENCE
卷 12, 期 27, 页码 9452-9457出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1sc03147c
关键词
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资金
- National Natural Science Foundation of China [21662041, U1702286]
- Yunnan Provincial Science Technology [department2018FA045]
- Program for Changjiang Scholars and Innovative Research Teams in Universities [IRT17R94]
- Project of Innovative Research Team of Yunnan Province [202005AE160005]
Strategically integrating functional group manipulation into the ring system construction resulted in a short, enantioselective, gram-scale total synthesis of (-)-zephyranthine. The concise route includes a catalytic Michael/Michael cascade, an 8-step one-pot operation, regioselective construction of a double bond, and asymmetric dihydroxylation. This synthesis is flexible and paves a potential path to a variety of cyclohexylamine-fused tricyclic or polycyclic alkaloids.
A reasonable synthesis design by strategically integrating functional group manipulation into the ring system construction resulted in a short, enantioselective, gram-scale total synthesis of (-)-zephyranthine. The concise route includes a catalytic Michael/Michael cascade for the asymmetric synthesis of a penta-substituted cyclohexane with three contiguous stereogenic centers, a remarkable 8-step one-pot operation to easily assemble the zephyranthine tetracyclic skeleton, the regioselective construction of a double bond in the C ring and an asymmetric dihydroxylation. This synthesis is also flexible and paves a potential path to a variety of cyclohexylamine-fused tricyclic or polycyclic alkaloids.
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