Class

Structure

Name

Substitution Pattern

Flavanones

Naringenin Hesperetin Hesperidin

5,7,4’-OH 5,7,3’-OH, 4’-OMe 5,7,3’-OH, 4’-OMe, 7-rutinoside

Flavan-3-ols

(+)-catechin Epigallocatechin Epigallocatechin gallate

5,7,3’,4’-OH 5,7,3’,4’,5’-OH 5,7,3’,4’-OH, 3-gallate

Flavones

Chrysin Apigenin Baicalein

5,7-OH 5,7,4’-OH 5,6,7-OH

Flavonols

Rutin Kaempferol Quercetin Galangin

5,7,3’,4’-OH, 3-rutinose 5,7,4’-OH 5,7,3’,4’-OH 5,7-OH

Dihydroflavonols

Taxifolin

Isoflavones

Genistein Daidzein Puerarin Glycitein

5,7,4’-OH 7,4’-OH 7,4’-OH, 8-glucoside 6-OMe, 7-OH, 4’-OH

Flavolignans

Silybin