The 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 Taxifolin (5,7,3',4'-flavan-on-ol), also known as dihydroquercetin, belongs to the subclass flavanonols in the flavonoids, which in turn is a class of polyphenols. Stereocenters Taxifolin has two stereocenters on the C-ring, as opposed to quer ...

(or Dihydroquercetin) * Aromadedrin (or Dihydrokaempferol) * Engeletin (or Dihydrokaempferol-3-rhamnoside)

Metabolism

Flavanone 3-dioxygenase In enzymology, a flavanone 3-dioxygenase () is an enzyme that catalyzes the chemical reaction :a flavanone + 2-oxoglutarate + O2 \rightleftharpoons a dihydroflavonol + succinate + CO2 The 3 substrates of this enzyme are flavanone, 2-oxoglutar ...

Flavonol synthase In enzymology, a flavonol synthase () is an enzyme that catalyzes the following chemical reaction : dihydroflavonol + 2-oxoglutarate + \rightleftharpoons a flavonol + succinate + C + H2O The 3 substrates of this enzyme are dihydroflavonol, ...

Dihydroflavonol 4-reductase In enzymology, a dihydrokaempferol 4-reductase () is an enzyme that catalyzes the chemical reaction :cis-3,4-leucopelargonidin + NADP+ \rightleftharpoons (+)-dihydrokaempferol + NADPH + H+ Thus, the two substrates of this enzyme are cis-3,4 ...

Glycosides

Glycosides ( chrysandroside A and chrysandroside B) can be found in the roots of '' Gordonia chrysandra''.

Xeractinol Xeractinol is a flavanonol The 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: * Taxifo ...

, a dihydroflavonol C-glucoside, can be isolated from the leaves of ''

Paepalanthus argenteus ''Paepalanthus bromelioides'' is a species in the flowering plant family Eriocaulaceae. This family is placed in the Poales, close to the Bromeliaceae, whose morphology this genus shares. ''Paepalanthus bromelioides'' is native to Cerrado, t ...

var. argenteus''. Dihydro-flavonol glycosides ( astilbin, neoastilbin, isoastilbin, neoisoastilbin, (2''R'', 3''R'')-

taxifolin Taxifolin (5,7,3',4'-flavan-on-ol), also known as dihydroquercetin, belongs to the subclass flavanonols in the flavonoids, which in turn is a class of polyphenols. Stereocenters Taxifolin has two stereocenters on the C-ring, as opposed to quer ...

-3'-''O''-β-D-pyranoglucoside) have been identified in the rhizome of '' Smilax glabra''.

References

{{Aromatic-stub