title: Phenolic compounds, including novel C-glycosylflavone, from the flowers of the tall bearded iris cultivar 'Victoria Falls'.
abstract: A new C-glycosylflavone, luteolin 7-methyl ether 6-C-[beta-arabinopyranosyl-(1-2)-f-glucopyranoside] (swertiajaponin 2"-O-arabinoside) (1) was isolated and identified from the violet blue colored flowers of the tall bearded iris (Iris hybrid) cultivar 'Victoria Falls', together with five known flavonoids, swertisin 2"-O-arabinoside (2), schaftoside (3), isoschaftoside (4), swertiajaponin (5), swertisin 2"-O-glucoside (6) and a C-glycosylxanthone, mangiferin (7). Of these compounds, 1 and 2 were elucidated from NMR spectroscopic data, which revealed the rotameric pairs. C-Glycosylflavone O-arabinosides were isolated from the genus Iris for the first time.
authors: United Graduate School of Agricultural Science, Tokyo University ofAgriculture and Technology, Saiwai-cho, Fuchu, Tokyo 183-8509, Japan. tmizuno@kahaku.go.jp
authors: Takayuki
authors: T
authors: Mizuno
authors: Tsutomu
authors: T
authors: Yabuy
authors: Nobuhiro
authors: N
authors: Sasaki
authors: Tsukasa
authors: T
authors: Iwashina
mesh_terms: D002851:Chromatography, High Pressure Liquid; D002855:Chromatography, Thin Layer; D047309:Flavones / Q000737:chemistry*; D035264:Flowers / Q000737:chemistry*; D006868:Hydrolysis; D031323:Iris Plant / Q000737:chemistry*; D010636:Phenols / Q000737:chemistry*; D021241:Spectrometry, Mass, Electrospray Ionization; D013056:Spectrophotometry, Ultraviolet
chemical_list: D047309:Flavones; D010636:Phenols; C578750:luteolin 7-methyl ether 6-C-(beta-arabinopyranosyl-(1-2)-f-glucopyranoside) (swertiajaponin 2''-O-arabinoside)