title: Structural determination of flavonoids from Sophora flavescens.
abstract: Eight flavonoids were isolated from Sophora flavescens. Among them, three prenylflavanones: (2S)-6[2(3-hydroxyisopropyl)-5-methyl-4-hexenyl]-5-methoxy-7,2', 4'-trihydroxyflavanone (1), (2S)-5, 4'-dimethoxy-8-lavandulyl-7, 2'-dihydroxy flavanone (2) and (2S)-8-(5-hydroxy-2-isopropenyl-5-methylhexyl)-7-methoxy-5,2', 4'-trihydroxyflavanone (3) are new compounds. Their chemical structures were determined by spectral methods including 2D NMR.
authors.affiliation: School of Pharmaceutical Sciences, Dalian Medical University, Dalian 116027, PR China.
authors.forename: Xiao-Chi
authors.initials: XC
authors.lastname: Ma
authors.forename: Xiu-Lan
authors.initials: XL
authors.lastname: Xin
authors.forename: Bao-Jing
authors.initials: BJ
authors.lastname: Zhang
authors.forename: Feng-Yun
authors.initials: FY
authors.lastname: Li
authors.forename: Ke-Xin
authors.initials: KX
authors.lastname: Liu
authors.forename: De-An
authors.initials: DA
authors.lastname: Guo
mesh_terms: D002247:Carbon Isotopes; D044950:Flavanones / Q000737:chemistry* / Q000302:isolation & purification; D005419:Flavonoids / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy / Q000379:methods* / Q000592:standards*; D008968:Molecular Conformation; D018517:Plant Roots / Q000737:chemistry; D011522:Protons; D012015:Reference Standards; D029909:Sophora / Q000737:chemistry*; D013237:Stereoisomerism
chemical_list: D002247:Carbon Isotopes; D044950:Flavanones; D005419:Flavonoids; D011522:Protons