A new chromone glycoside from Cassia siamea lam.

AimTo study the chemical constituents of the stem of Cassia siamea. MethodsThe compounds were isolated by chromatography on silica gel, and identified on the basis of spectral analysis. ResultsFive compounds were isolated and identified as: β-sitosterol (I), sucrose (II), n-octacosanol (III), 2-methyl-5-(2′-hydroxypropyl)-7-hydroxy-chromone-2′-O-β-D-glucopyranoside (IV) and piceatannol (V). ConclusionCompound IV is a new compound. Compounds II,III and V were obtained from this plant for the first time.