title: Two new flavonol glycosides from leaves of Koelreuteria paniculata.
abstract: Two new flavonol glycosides were isolated from dried leaves of Koelreuteria paniculata Laxm. (Sapindaceae) and characterized as 6,8-dihydroxy-afzelin and afzelin 3"-O-gallate, based on chemical and spectral evidences, in addition to nine known polyphenolic metabolites, including eight isolated for the first time from this species.
authors.affiliation: Department of Pharmacognosy, Faculty of Pharmacy, Helwan University, Ain-Helwan, Cairo, Egypt. msmarzouk@yahoo.co.uk
authors.forename: I
authors.initials: I
authors.lastname: Mahmoud
authors.forename: F A
authors.initials: FA
authors.lastname: Moharram
authors.forename: M S
authors.initials: MS
authors.lastname: Marzouk
authors.forename: H S
authors.initials: HS
authors.lastname: Soliman
authors.forename: R A
authors.initials: RA
authors.lastname: el-Dib
mesh_terms: D004534:Egypt; D005419:Flavonoids / Q000737:chemistry* / Q000302:isolation & purification; D006027:Glycosides / Q000737:chemistry* / Q000302:isolation & purification; D044949:Kaempferols; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D018515:Plant Leaves / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D044945:Proanthocyanidins; D013056:Spectrophotometry, Ultraviolet
chemical_list: C433778:6,8-dihydroxyafzelin; D005419:Flavonoids; D006027:Glycosides; D044949:Kaempferols; D044945:Proanthocyanidins; C433779:afzelin 3''-O-gallate