title: Glycosyl flavonoids from the roots and rhizomes of Asarum longerhizomatosum.
abstract: Two new glycosyl flavonoids including a glycosyl aurone, together with six known flavonoids were isolated from the roots and rhizomes of Asarum longerhizomatosum. The structures of the two new compounds were elucidated as 4,6,4'-trihydroxy-aurone-4,6-di-O-beta-D-glucopyranoside (7, caulesauroneside) and naringenin-7,4'-di-O-beta-D-glucopyranoside (8, caulesnarinside). The six known flavonoids were identified as naringenin (1), naringenin-5-O-beta-D-glucopyranoside (2), naringenin-7-O-beta-D-glucopyranoside (3), chalcononaringenin-2'-O-beta-D-glucopyranoside (4), naringenin-5,7-di-O-beta-D-glucopyranoside (5), chalcononaringenin-2',4'-di-O-beta-D-glucopyranoside (6), respectively. This is the first report of the isolation of aurones in the family Aristolochiaceae.
authors.affiliation: Department of Natural Medicines, School of Pharmaceutical Sciences, Peking University, Beijing 100083, China.
authors.forename: Shu-Xiang
authors.initials: SX
authors.lastname: Zhang
authors.forename: Tadato
authors.initials: T
authors.lastname: Tani
authors.forename: Seiichi
authors.initials: S
authors.lastname: Yamaji
authors.forename: Chao-Mei
authors.initials: CM
authors.lastname: Ma
authors.forename: Min-Chuan
authors.initials: MC
authors.lastname: Wang
authors.forename: Shao-Qing
authors.initials: SQ
authors.lastname: Cai-
authors.forename: Yu-Ying
authors.initials: YY
authors.lastname: Zhao
mesh_terms: D030023:Asarum; D005419:Flavonoids / Q000737:chemistry*; D006031:Glycosylation; D006801:Humans; D009682:Magnetic Resonance Spectroscopy; D008517:Phytotherapy; D010936:Plant Extracts / Q000737:chemistry*; D018517:Plant Roots; D013329:Structure-Activity Relationship
chemical_list: D005419:Flavonoids; D010936:Plant Extracts