Flavanonol
Introduction Flavanonol, numberingThe '''flavanonols''' (with two "o"s a.k.a. 3-hydroxyflavanone or 2,3-dihydroflavonol) are a class of flavonoids that use the 3-hydroxy-2,3-dihydro-2-phenylchromen-4-one (IUPAC name) backbone.Some examples include:* Taxifolin (or Dihydroquercetin)* Aromadedrin (or Dihydrokaempferol)* Engeletin (or Dihydrokaempferol-3-rhamnoside)
Metabolism * Flavanone 3-dioxygenase* Flavonol synthase* Dihydroflavonol 4-reductase
Glycosides Glycosides (chrysandroside A and chrysandroside B) can be found in the roots of ''Gordonia chrysandra''. Xeractinol, a dihydroflavonol C-glucoside, can be isolated from the leaves of ''Paepalanthus argenteus var. argenteus''.Dihydro-flavonol glycosides (astilbin, neoastilbin, isoastilbin, neoisoastilbin, (2''R'', 3''R'')-taxifolin-3'-''O''-β-D-pyranoglucoside) have been identified in the rhizome of ''Smilax glabra''.
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