Structural determination of flavonoids from Sophora flavescens.
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.
Ma
Xiao-Chi
XC
School of Pharmaceutical Sciences, Dalian Medical University, Dalian 116027, PR China.
Xin
Xiu-Lan
XL
Zhang
Bao-Jing
BJ
Li
Feng-Yun
FY
Liu
Ke-Xin
KX
Guo
De-An
DA
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
D002247:Carbon Isotopes; D044950:Flavanones; D005419:Flavonoids; D011522:Protons