Prenylisoflavone derivatives from the roots of Hedysarum scoparium.
Four new prenylisoflavone derivatives, namely, 5-hydroxy-4'-methoxy-8-prenyl-2''-hydroxyisopropyldihydrofurano[4,5:6,7]-isoflavone (1), 5-hydroxy-4'-methoxy-6-prenyl-2'''-hydroxyisopropyldihydrofurano[4,5:8,7]-isoflavone (2), 5-hydroxy-4'-methoxy-8-prenyl-1'',2''-peroxyl-3'',3''-dimethyldihydropyrano[5,6:6,7]-isoflavone (3), and 5-hydroxy-4'-methoxy-6-prenyl-1''',2'''-peroxyl-3''',3'''-dimethyldihydropyrano[5,6:8,7]-isoflavone (4), together with three known ones 5-7, were isolated from the roots of Hedysarum scoparium. Their structures were established by means of detailed spectroscopic analysis (IR, EI- or HR-ESI-MS as well as 1D- and 2D-NMR), and by comparison of their spectroscopic data with those reported for structurally related compounds.
Chen
Sheng-Gao
SG
State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, People's Republic of China.
Chen
Jian-Jun
JJ
Gao
Kun
K
D002855:Chromatography, Thin Layer; D007887:Fabaceae / Q000737:chemistry*; D007529:Isoflavones / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D008516:Medicine, Chinese Traditional; D010936:Plant Extracts / Q000737:chemistry; D018517:Plant Roots / Q000737:chemistry; D021241:Spectrometry, Mass, Electrospray Ionization; D013055:Spectrophotometry, Infrared; D013056:Spectrophotometry, Ultraviolet
D007529:Isoflavones; D010936:Plant Extracts