%0 Journal Article
%T Steroidal and pregnane glycosides from Ypsilandra thibetica
%A Hai-Yang Liu
%A Chang-Xiang Chen
%A Yi Lu
%A Jun-Yun Yang
%A Wei Ni
%J Natural Products and Bioprospecting
%@ 2192-2209
%D 2012
%I Springer
%R 10.1007/s13659-011-0039-z
%X The whole plants of Ypsilandra thibetica have been analyzed as part of a systematic study on saponin constituents of medicinal plants. This has resulted in the isolation of two new bisdesmosidic furostanol saponins, named ypsilandroside P (1) and ypsilandroside Q (2), and one new pregnane glycoside, named ypsilandroside R (3), together with nine known steroidal glycosides. Their structures were elucidated on the basis of extensive spectroscopic analysis, including that of 2D NMR data, and the results of acidic hydrolysis. Ypsilandroside P (1) was cytotoxicity against two human tumor cell lines.
%K Ypsilandra thibetica
%K Liliaceae
%K furostanol glycoside
%K pregnane glycoside
%K ypsilandroside
%U http://link.springer.com/article/10.1007/s13659-011-0039-z