Ombuin
Ombuin is an O-methylated flavonol, a type of flavonoid. It is the 4',7-O-methyl derivative of quercetin.
Ombuin can be found in species of the genus Erythroxylum. It can also be synthetized. Ombuin 3-sulfate can be isolated from Flaveria chlorifolia.Glycosides
can be isolated from Phytolacca dioica, the ombu tree. Ombuin-3-O-rhamnosylglucoside can be found in Erythroxylum rufum.
Other glycosides :
