Table 1

Flavonoid structures

Embedded Image
R3R5R6R7R3R4
Flavones and flavonols
 AcacetinOHOHOCH3
 ApigeninOHOHOH
 BaicaleinOHOHOH
 ChrysinOHOH
 DiosmetinOHOHOHOCH3
 DiosminOHO-RutOHOCH3
 GalanginOHOHOH
 5-HydroxyflavoneOH
 6-HydroxyflavoneOH
 7-HydroxyflavoneOH
 5-Hydroxy-7-methoxyflavoneOHOCH3
 7-Hydroxy-5-methylflavoneCH3 OH
 IsorhamnetinOHOHOHOCH3 OH
 KaempferolOHOHOHOH
 LuteolinOHOHOHOH
 QuercetinOHOHOHOHOH
R3R4R3R4
Flavanes
 (+)-CatechinOHOHOH Embedded Image
 Hesperetin=OOHOCH3
 Naringenin=OOH
R
Isoflavonoids
 Biochanin AOCH3       Embedded Image
 GenisteinOH
  • Rut, rutinoside.