Flavonoid constituents of whole plant of Kummerowia striata / 中国药学杂志

ABSTRACT

OBJECTIVE: To study the chemical constituents of Kummerowia striata. METHODS: The chemical constituents were isolated and purified with silica column chromatography, gel chromatography, etc. Their structures were identified by physicochem-ical properties and various spectroscopic methods including NMR spectrum, MS, UV, etc. RESULTS: Fourteen compounds were isolated and elucidated as quercetin-3-O-α-L-rhao pyranoside(1), kaempferol-3-O-α-L-rhamopyra noside(2), apigenin(3), quercetin(4), quercetin-3-O-β-D-galactopyranside(5), luteolin-7-O-β-D-glucoside (6), luteolin(7), campherol-3-O-D-sophoroside(8), isoorientin (9), orientin(10), apigenin-7-O-β-D-glucuronide methylester(11), 7-hydroxy-4′-methoxy isoflavone(12), tricin(13), and tricin-7-O-β-D-glucopyranoside(14). CONCLUSION: Compounds 1, 2, 5, 6, 8, 9, and 10-14 are isolated from Kummerowia striata for the first time.