Flavonols

From Wikipedia, the free encyclopedia

Flavonols are a class of flavonoids that use the 3-hydroxyflavone backbone (3-hydroxy-2-phenylchromen-4-one (IUPAC)). Their diversity stems from the different positions the phenolic -OH groups. They are distinct from flavanols, another class of flavonoids.

Some examples include:

  • Kaempferol (3,4',5,7-tetrahydroxy-2-phenylchromen-4-one)
  • Quercetin (3,3',4',5,7-pentahydroxy-2-phenylchromen-4-one)
  • Myricetin (3,3',4',5',5,7-hexahydroxy-2-phenylchromen-4-one)
  • Fisetin (3,3',4',7-tetrahydroxy-2-phenylchromen-4-one)
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Types of Flavonoids
Flavones:
Isoflavones:
Biochanin A | Coumestrol | Daidzein | Daidzin | Formononetin | Genistein | Puerarin
Flavonols:
Fisetin | Isorhamnetin | Kaempferol | Myricetin | Pachypodol | Quercetin | Rhamnazin
Flavanones:
3-Hydroxyflavanones:
Dihydrokaempferol | Dihydroquercetin
Flavan-3-ols:
Anthocyanidins:
Misc:
Major families of biochemicals
Peptides | Amino acids | Nucleic acids | Carbohydrates | Nucleotide sugars | Lipids | Terpenes | Carotenoids | Tetrapyrroles | Enzyme cofactors | Steroids | Flavonoids | Alkaloids | Polyketides | Glycosides
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