Chemical constituents of Spatholobus suberectus

AimTo investigate chemical constituents of Spatholobus suberectus Dunn.MethodsIsolation and purification were carried out by column chromatographic methods. Compounds were characterized based on their physical characteristics and spectra data.ResultsSeventeen compounds were isolated from ethanol extract of S. suberectus. The structures were elucidated as prestegane B (1), (2R, 3R)-buteaspermanol (2), (+)-medioresinol (3), (2R, 3R)-3,7-dihydroxyflavanone (4), benzeneethanol (5), 4, 7, 2′-trihydroxy-4′-methoxyisoflavanol (6), naringenin (7), blumenol A (8), protocatechuic acid ethyl ester (9), liquiritigenin (10), 7, 4′-dihydroxy-8-methoxy-isoflavone (11), 3, 5, 7, 3′, 5′-pentahydroxyflavanone (12), protocatechuic acid (13), glycyroside (14), 8-methylretusin-7-O-β-D-glucopyranoside (15), 3, 3′, 4′, 5, 6, 7, 8-heptahydroxyflavan (16), and dulcisflavan (17).ConclusionAll compounds are firstly isolated from the title plant and compounds 1, 3 were isolated from the Spatholobus genus for the first time.