Kopsiyunnanines J1 and J2, new strychnos-type homo-monoterpenoid indole alkaloids from Kopsia arborea.

Kitajima Mariko,Koyama Tetsuya,Wu Yuqiu,Kogure Noriyuki,Zhang Rongping,Takayama Hiromitsu

NATURAL PRODUCT COMMUNICATIONS（2015）

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摘要

Two new indole alkaloids, kopsiyunnanines J1 and J2, were isolated from Yunnan Kopsia arborea, and their structures were determined by spectroscopic analyses. Kopsiyunnanines J1 and J2 are unprecedented Strychnos-type indole alkaloids having an additional Cl unit in the secologanin moiety of the molecule.

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关键词

Alkaloid,Indole,Kopsia,Apocynaceae

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