Ypsiyunnosides A-E, Five New Cholestanol Glycosides from Ypsilandra yunnanensis.

	Ypsiyunnosides A-E, Five New Cholestanol Glycosides from Ypsilandra yunnanensis.
	Chen, Yu; Si, Yong-Ai; Ni, Wei; Yan, Huan; Qin, Xu-Jie; Chen, Chang-Xiang; Liu, Hai-Yang
	2016
发表期刊	Natural products and bioprospecting
ISSN	2192-2195
卷号	6 期号:3 页码:173-82
摘要	Phytochemical investigation on the whole plants of Ypsilandra yunnanensis was carried out for the first time and led to the isolation of five new cholestanol glycosides, ypsiyunnosides A-E (1-5), and one known analogue. Their structures were determined mainly by detailed spectroscopic analysis, including extensive 1D and 2D NMR, MS and UV, as well as chemical methods. Among them, compound 1 possessed a rare 6/6/6/5/5 fused-rings cholestanol sketelon, which was identified as (23R,25R)-3beta,16alpha,26-triol-16,23-cyclocholest-5,17(20)-dien-22-one. Their induced platelet aggregation activities and cytotoxicities were evaluated. Five new cholestanol glycosides, ypsiyunnosides A-E (1-5), were isolated from the whole plants of Ypsilandra yunnanensis. Compound 1 possessed a rare 6/6/6/5/5 fused-rings cholestanol sketelon. Their structures were elucidated by a combination of 1D and 2D NMR, MS and chemical analysis.
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/64889
专题	植物化学与西部植物资源持续利用国家重点实验室
推荐引用方式 GB/T 7714	Chen, Yu,Si, Yong-Ai,Ni, Wei,et al. Ypsiyunnosides A-E, Five New Cholestanol Glycosides from Ypsilandra yunnanensis.[J]. Natural products and bioprospecting,2016,6(3):173-82.
APA	Chen, Yu.,Si, Yong-Ai.,Ni, Wei.,Yan, Huan.,Qin, Xu-Jie.,...&Liu, Hai-Yang.(2016).Ypsiyunnosides A-E, Five New Cholestanol Glycosides from Ypsilandra yunnanensis..Natural products and bioprospecting,6(3),173-82.
MLA	Chen, Yu,et al."Ypsiyunnosides A-E, Five New Cholestanol Glycosides from Ypsilandra yunnanensis.".Natural products and bioprospecting 6.3(2016):173-82.