Flavonoids of nymphea hybrida tach.V.and biological evaluation

The chemistry of the flavonoids of Nymphaea hybrida Tach. V. is described for the first time. The flavonol aglycones quercetin and myricetin were isolated from the ether extract while, the flavonol glycosides quercetin 3-glucoside, quercetrin and myricetrin were isolated from the ethyl acetate extract. Physicochemical methods were applied to determine their structure. Isolated flavonol aglycones were tested for antimicrobial, anti-inflammatory, analgesic and ulcerogenic activities