O
O
Dihydrochalcone
Chalcone
O
O
A
C
B
Flavone
O
O
O
H
OH
OH
OH
OH
Flavonol (Quercetin)
1
2
3
4
5
6
7
8
2'
3'
4'
5'
6'
O
O
O
H
OH
OH
Flavone (Apigenin)
Catechin
O
O
H
OH
OH
OH
OH
O
+
O
H
OH
OH
OH
OH
Anthocyanin ( Cyanidin)
O
O
O
H
OH
OH
Isoflavone ( Genistein)
O
O
O
H
OH
O-Rham- Glu
OH
OH
Rutin
O
O
O
H
OH
OH
O
O
OH
OH
OCH 3
Silybin
O
O
O
H
OH
OH
OH
Flavone (Kaemferol)
Fig. 10.14 The structures of some important flavonoids derived from plants
348
C. C. Kandar