ChemInform Abstract: Expedient Construction of the [5-6-7] Tricyclic Core of Calyciphylline A-Type Alkaloids.

Jing-Jing Guo,Yun Li,Bin Cheng,Tingting Xu,Cheng Tao, Xinkan Yang,Denghong Zhang,Guangqi Yan,Hongbin Zhai

ChemInform（2015）

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摘要

A highly efficient intramolecular Diels—Alder cycloaddition for the establishment of the aza-five-membered ring and the C-1 quaternary center is the key step for the construction of the title tricyclic core, followed by cyclopropanation together with a ring-expansion for the construction of the seven-membered ring.

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cheminform abstract,tricyclic core,a-type

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