title: Chemical constituents from the roots of Biondia chinensis.
abstract: Two new triterpenoid saponins, biondianosides F and G, together with 13 known compounds, were isolated from the ethanolic extract of the roots of Biondiachinensis Schltr. (Asclepiadaceae). Their structures were characterized as 3-O-beta-D-glucopyranosyl-2alpha,3beta-dihydroxyurs-12-en-28-oic acid-beta-D-glucopyranosyl-(1-->2)-[beta-D-glucopyranosyl-(1-->6)]-beta-D-glucopyranosyl ester (biondianoside F) and 3-O-beta-D-glucopyranosyl-2alpha,3beta,23-trihydroxyolean-12-en-28-oic acid-beta-D-glucopyranosyl-(1-->2)-beta-D-glucopyranosyl ester (biondianoside G) by spectral and chemical evidence.
authors.affiliation: Chinese Academy of Sciences, Chengdu Institute of Biology, Chengdu, 610041, China.
authors.forename: Xing-Gen
authors.initials: XG
authors.lastname: Tan
authors.forename: Pei
authors.initials: P
authors.lastname: Cao
authors.forename: Fan
authors.initials: F
authors.lastname: Luo
authors.forename: Shu-Lin
authors.initials: SL
authors.lastname: Peng
authors.forename: Li-Sheng
authors.initials: LS
authors.lastname: Ding
mesh_terms: D029062:Apocynaceae / Q000737:chemistry*; D002240:Carbohydrate Sequence; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D018517:Plant Roots / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification*; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification*
chemical_list: C507487:3-O-beta-D-glucopyranosyl-2alpha,3beta,23-trihydroxyolean-12-en-28-oic acid-beta-D-glucopyranosyl-(1-2)-beta-D-glucopyranosyl ester; C507488:3-O-beta-D-glucopyranosyl-2alpha,3beta-dihydroxyurs-12-en-28-oic acid-beta-D-glucopyranosyl-(1-2)-(beta-D-glucopyranosyl-(1-6))-beta-D-glucopyranosyl ester; D012503:Saponins; D014315:Triterpenes