Rhamnazin is an ''O''-methylated flavonol, a type of chemical compound. It can be found in ''

Rhamnus petiolaris ''Rhamnus petiolaris'' is a species of flowering plant in the family Rhamnaceae. It is native to Iraq, Lebanon, Syria, and Turkey. Uses Rhamnazin Rhamnazin is an ''O''-methylated flavonol, a type of chemical compound. It can be found in ''R ...

'', a

buckthorn ''Rhamnus'' is a genus of about 110 accepted species of shrubs or small trees, commonly known as buckthorns, in the family Rhamnaceae. Its species range from tall (rarely to ) and are native mainly in east Asia and North America, but found thr ...

plant endemic to Sri Lanka.

Metabolism

The enzyme 3-methylquercetin 7-''O''-methyltransferase uses ''S''-adenosyl methionine and

isorhamnetin Isorhamnetin is an O-methylated flavon-ol from the class of flavonoids. A common food source of this 3'-methoxylated derivative of quercetin and its glucoside conjugates are pungent yellow or red onions, in which it is a minor pigment, quercetin ...

to produce ''S''-adenosyl homocysteine and rhamnazin. The enzyme 3,7-dimethylquercetin 4'-''O''-methyltransferase uses ''S''-adenosyl methionine and rhamnazin to produce ''S''-adenosyl homocysteine and

ayanin Ayanin is an ''O''-methylated flavonol, a type of flavonoid. It is the 3,7,4'-tri-''O''-methylated derivative of quercetin. It can be found in ''Croton schiedeanus''. It can also be synthetized. Biosynthesis The enzyme 3,7-dimethylquercetin 4 ...

References

External links

Rhamnazin on the Extrasynthese catalogue
O-methylated flavonols {{Aromatic-stub