A new steroidal saponin from Dioscorea zingiberensis Wright.
Two compounds were obtained from the rhizome of Dioscorea zingiberensis Wright. One of them was elucidated as dioscin, the other one was a new compound and characterized as Spirost-5-en-3-yl beta-D-glucopyranosyl (1 --> 3)-beta-D-glucopyranosyl (1 --> 4)-[alpha-L-rhamnopyranosyl (1 --> 2)]-beta-D-glucopyranoside, structure was determined on the basis 2D NMR spectroscopic technique and the result of acid hydrolysis.
Sun
Wenji
W
Department of Biology, Northwest University, Xi'an 710069, China.
Tu
Guangzhong
G
Zhang
Yongmin
Y
D027742:Dioscorea / Q000737:chemistry*; D004144:Diosgenin / Q000031:analogs & derivatives* / Q000737:chemistry / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D027343:Rhizome / Q000737:chemistry; D012503:Saponins / Q000737:chemistry* / Q000302:isolation & purification*; D013261:Sterols / Q000737:chemistry* / Q000302:isolation & purification*
D012503:Saponins; D013261:Sterols; C478124:spirost-5-en-3-yl beta-D-glucopyranosyl (1-3)-beta-D-glucopyranosyl (1-4)-(alpha-L-rhamnopyranosyl (1-2))-beta-D-glucopyranoside; C019357:dioscin; D004144:Diosgenin