title: A new steroidal saponin from Dioscorea zingiberensis Wright.
abstract: 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.
authors.affiliation: Department of Biology, Northwest University, Xi'an 710069, China.
authors.forename: Wenji
authors.initials: W
authors.lastname: Sun
authors.forename: Guangzhong
authors.initials: G
authors.lastname: Tu
authors.forename: Yongmin
authors.initials: Y
authors.lastname: Zhang
mesh_terms: 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*
chemical_list: 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