title: Three new flavonol triglycosides from Derris trifoliata.
abstract: Three new flavonol triglycosides, kaempferol-3-O-alpha-L-rhamnopyranosyl-(1 --> 6)-beta-D-glucopyranosyl-(1 --> 3)-beta-D-glucopyranoside (1), quercetin-3-O-alpha-L-rhamnopyranosyl-(1 --> 6)-beta-D-glucopyranosyl-(1 --> 3)-beta-D-glucopyranoside (2), quercetin-3-O-alpha-L-rhamnopyranosyl-(1 --> 6)-beta-D-glucopyranosyl-(1 --> 2)-beta-D-glucopyranoside (3), together with the two known flavonol glycosides, kaempferol-3-O-alpha-L-rhamnopyranosyl-(1 --> 6)-beta-D-glucopyranoside and kaempferol-3-O-alpha-L-rhamnopyranosyl-(1 --> 6)-beta-D-glucopyranosyl-(1 --> 2)-beta-D-glucopyranoside, were isolated from the aerial parts of Derris trifoliata. Their structures were determined on the basis of chemical and spectroscopic analyses.
authors.affiliation: School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, China.
authors.forename: Lu-Rong
authors.initials: LR
authors.lastname: Xu
authors.forename: Pei
authors.initials: P
authors.lastname: Zhou
authors.forename: Yue-E
authors.initials: YE
authors.lastname: Zhi
authors.forename: Jun
authors.initials: J
authors.lastname: Wu
authors.forename: Si
authors.initials: S
authors.lastname: Zhang
mesh_terms: D029866:Derris / Q000737:chemistry*; D044948:Flavonols / Q000737:chemistry / Q000302:isolation & purification*; D005960:Glucosides / Q000737:chemistry / Q000302:isolation & purification*; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D011794:Quercetin / Q000031:analogs & derivatives* / Q000737:chemistry / Q000302:isolation & purification
chemical_list: D044948:Flavonols; D005960:Glucosides; D006027:Glycosides; C539531:kaempferol-3-O-alpha-L-rhamnopyranosyl-(1-6)-beta-D-glucopyranosyl-(1-3)-beta-D-glucopyranoside; C539532:quercetin-3-O-alpha-L-rhamnopyranosyl-(1-6)-beta-D-glucopyranosyl-(1-2)-beta-D-glucopyranoside; D011794:Quercetin