Flavonol glycosides in the flowers of Hibiscus mutabilis f. versicolor.

Abstract

The author has previously reported that in addition to cyanidin 3-xylosylglucoside (ilicicyanin) and cyanidin 3glucoside, the red petals of Hibiscus mutabilis f. versicolor contain the glycosides of quercetin and kaempferol.1) In the present study, five flavonol glycosides were isolated from the EtOAc extract of petals and examined by PC and UVspectral analyses. Those glycosides are shown in Table