应用天然产物 ›› 2014, Vol. 4 ›› Issue (6): 315-318.DOI: 10.1007/s13659-014-0043-1
• Original article • 下一篇
Yong-Ai Si1,2, Huan Yan1, Wei Ni1, Zhen-Hua Liu1,2, Ting-Xiang Lu1, Chang-Xiang Cheng1, Hai-Yang Liu1
Yong-Ai Si1,2, Huan Yan1, Wei Ni1, Zhen-Hua Liu1,2, Ting-Xiang Lu1, Chang-Xiang Cheng1, Hai-Yang Liu1
摘要: Two new monosaccharide steroidal saponins, named ypsilandroside S(1) and ypsilandroside T(2), have been isolated from the whole plants of Ypsilandra thibetica. Their structures were elucidated as heloniogenin 3-O-β-D-apiofuranoside(1) and pregna 5, 16-dien-3β, 12α-diol-20-one-3-O-β-D-apiofuranoside(2) by spectroscopic techniques(1D and 2D NMR, MS). Compounds 1 and 2 were tested for their inhibitory effects on lipopolysaccharide-induced nitric oxide production in RAW 264.7 cells.