HOOC
SCoA
O
P
O
O
OH
O
HO
HO
Phosphoenolpyruvate
HO
OH
HO
OH
O
OH
Quinic acid
HO
OH
OH
OH
O
OH
O
OH
O
OH
O
OH
O
NH 2
OH
O
Cinnamic acid
Phenylalanine
Chorismic acid
Shikimic acid
SCoA
O
HO
4-coumaroyl-CoA
Malonyl CoA
OH
HO
OH O
OH
HO
OH
OH
O
O
HO
OH
OH
O
O
OH
HO
OH
OH
O
O
OH
OH
Chalcone
Naringenin
Dihydrokaempferol
Dihydroquercetin
HO
OH
OH
O
OH
OH
OH
HO
OH
OH
O
OH
Leucocyanidin
OH
Anthocyanidin
HO
OH
OH
O
OH
OH
HO
OH
OH
O
OH
(+)-Catechin
(-)-Epicatechin
HO
OH
OH
O
OH
HO
OH
OH
O
OH
HO
OH
OH
O
OH
OH
OH
OH
O
OH
HO
HO
O
O
O
O
RO
HO
HO
HO
OR
OR
HO
OH
OH
OH
PEPTr
Phosphoenolpyruvate
H 2 O
Asn
Asp
PAL
CAH
CH S
CHI
F3H
F3'H
DFR
LAR
OH
Complex tannin
Condensed tannin
Procyanidin oligomer
LDOX
ANR
Glycosylation
O
OH
R=
Fig. 21.6 Biosynthetic pathway of condensed tannins and complex tannins
730
S. Mal and D. Pal