title: Four new compounds from the rhizome of Aristolochia championii.
abstract: Three new flavonoid glycosides (1-3) and one new aristololactam N-glycoside (4) were isolated from the rhizome of Aristolochia championii. The structures of compounds 1-4 were elucidated on the basis of their spectroscopic data and chemical evidence (UV, IR, HR-ESI-MS, 1D and 2D NMR). Their structures were determined as 8-(5-formyl-2-furanmethyl)-isorhamentin 3-O-robinobioside (1), 8-(5-methyl-2-furanoyl)-isorhamentin 3-O-robinobioside (2), 8-formylisorhamentin 3-O-robinobioside (3), and N-β-D-glucopyranosylaristololactam V (4), respectively.
authors.affiliation: a State Key Laboratory of Bioactive Substance and Function of Natural Medicines , Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , China.
authors.forename: Xin
authors.initials: X
authors.lastname: Wang
authors.affiliation: a State Key Laboratory of Bioactive Substance and Function of Natural Medicines , Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , China.
authors.forename: Guo-Ru
authors.initials: GR
authors.lastname: Shi
authors.affiliation: a State Key Laboratory of Bioactive Substance and Function of Natural Medicines , Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , China.
authors.forename: Yan-Fei
authors.initials: YF
authors.lastname: Liu
authors.affiliation: a State Key Laboratory of Bioactive Substance and Function of Natural Medicines , Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , China.
authors.forename: Ruo-Yun
authors.initials: RY
authors.lastname: Chen
authors.affiliation: a State Key Laboratory of Bioactive Substance and Function of Natural Medicines , Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College , Beijing 100050 , China.
authors.forename: De-Quan
authors.initials: DQ
authors.lastname: Yu
mesh_terms: D030022:Aristolochia / Q000737:chemistry*; D004365:Drugs, Chinese Herbal / Q000737:chemistry; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification*; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D015394:Molecular Structure; D027343:Rhizome / Q000737:chemistry*; D013237:Stereoisomerism
chemical_list: C000615994:8-(5-formyl-2-furanmethyl)-isorhamentin 3-O-robinobioside; C000615995:8-(5-methyl-2-furanoyl)-isorhamentin 3-O-robinobioside; C000615996:8-formylisorhamentin 3-O-robinobioside; D004365:Drugs, Chinese Herbal; D005419:Flavonoids; D006027:Glycosides; C000615997:N-beta-D-glucopyranosylaristololactam
keywords: Aristolochia championii; Aristolochiaceae; aristololactam N-glycoside; chemical constituents; flavonoid glycosides