title: New flavonol glycosides from leaves of Symplocarpus renifolius.
abstract: A study was carried out to evaluate flavonol glycosides in leaves of Symplocarpus renifolius (Araceae). From the water fraction of the MeOH extract, three new flavonol glycosides were isolated along with three known compounds, kaempferol-3-O-beta-D-glucopyranosyl-(1-->2)-beta-D-glucopyranosyl-7-O-b eta-D-glucopyranoside,quercetin-3-O-beta-D-glucopyranosyl-(1-->2)-beta-D -glucopyranoside, and caffeic acid. The structures of the new flavonol glycosides were elucidated by chemical and spectral analyses as quercetin-3-O-beta-D-glucopyranosyl-(1-->2)-beta-D-glucopyranosyl-7-O-be ta-D-glucopyranoside, isorhamnetin-3-O-beta-D-glucopyranosyl-(1-->2)-beta-D-glucopyra nos yl-7-O-beta-D-glucopyranoside, and quercetin-3-O-beta-D-glucopyranosyl-(1-->2)-beta-D-glucopyranosyl-7-O-(6 ''''-trans-caffeoyl)-beta-D-glucopyranoside.
authors.affiliation: College of Pharmacy, Chung-Ang University, Seoul, Korea. Whang-wk@cau.ac.kr
authors.forename: W K
authors.initials: WK
authors.lastname: Whang
authors.forename: M T
authors.initials: MT
authors.lastname: Lee
mesh_terms: D002851:Chromatography, High Pressure Liquid; D005419:Flavonoids / Q000737:chemistry* / Q000302:isolation & purification; D006868:Hydrolysis; D009682:Magnetic Resonance Spectroscopy; D010936:Plant Extracts / Q000737:chemistry; D018515:Plant Leaves / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013055:Spectrophotometry, Infrared
chemical_list: D005419:Flavonoids; D010936:Plant Extracts