| Structure |
Compound |
R1 |
R2 |
R3 |
R4 |
Trees |
 |
Flavanones |
|
| Pinocembrin |
H |
H |
|
|
P |
| Naringenin |
H |
OH |
|
|
B |
| Eriodictyol |
OH |
OH |
|
|
S |
 |
Flavones |
|
| Apigenin |
H |
H |
H |
|
S, B |
| Luteolin |
OH |
H |
H |
|
B |
 |
Flavonols |
|
| Kaempferol |
H |
H |
OH |
|
P,S,B |
| Quercetin |
OH |
H |
OH |
|
P,S,B |
| Isorhamnetin |
OMe |
H |
OH |
|
P,S |
| Myricetin |
OH |
OH |
OH |
|
S |
| Laricitrin |
OMe |
OH |
OH |
|
S |
| Syringetin |
OMe |
OMe |
OH |
|
S |
| Chrysin |
H |
H |
H |
H |
|
| Acacetin |
H |
OMe |
H |
H |
B |
 |
Dihydro-flavanols |
|
| Aromadendrin |
H |
H |
OH |
|
S |
| Taxifolin |
H |
OH |
OH |
|
P,S |
| Ampelopsin |
OH |
OH |
OH |
|
S |
 |
Flavans |
|
| Catechin |
OH |
H |
|
|
P,S,B |
| Epicatechin |
H |
OH |
|
|
S |
| 3ยด-Me-Catechin |
OMe |
H |
|
|
S |
| Gallocatechin |
OH |
OH |
|
|
S |
 |
Anthocyanins |
|
| Pelargonidin |
H |
H |
|
|
S |
| Cyanidin |
OH |
H |
|
|
S |
| Peonidin |
OMe |
H |
|
|
S |
| Delphinidin |
OH |
OH |
|
|
S |
|
