Two flavonoid triglycosides from <i>Cassia marginata</i>

446-448Two new tri-O-glycoside flavonols; quercetin and kaempferol 3-O-α--rhamnopyranosyl (1→2)-β--glucopyranosyl (1—6)-β--galactopyranosides, have been identified from stem of Cassia marignata. Structures have been established by conventional methods of analysis and confirmed by MS, 1H and 13C NMR spectral analyses