STUDIES ON THE CHEMICAL CONSTITUENTS OF Spatholobus suberectus DUNN

AIMTo study the chemical constituents of Spatholobus suberectus Dunn. METHODSThe constituents of Spatholobus suberectus were separated with various chromatographic techniques. The structures were elucidated by physico-chemical properties and spectral data. RESULTSEight compounds were isolated from Spatholobus suberectus Dunn. They were identified as: suberectin (1), formononetin (2), daidzein (3), calycosin (4), pyromucic acid (5), 1,3,5-benzenetriol (6), succinic acid (7) and β-sitosterol (8). CONCLUSIONSuberectin is a new compound and characterized as 7,3′,4′-trihydroxy-6-methoxy flavanone on the basis of chemical and spectral evidence. Compounds 4, 5, 6 and 7 were obtained from Spatholobus genus for the first time.