Biology Reference
In-Depth Information
HO
HO
OH
OH
HO
O
O
HO
HO
O
OH
O
O
HO
HO
OH
OH
HO
HO
O
H
O
H
OH
HO
OH
OH
O
OH
O
HO
O
OH
O
OH
O
O
HO
OH
HO
HO
O
O
HO
HO
HO
OH
O
Camelliatannin C
H
OH
O
OH
O
O
Camelliatannin E
OH
OH
HO
HO
HO
Camelliatannin B
Camelliatannin A
HO
HO
HO
OH
OH
HO
OH
O
O
HO
O
O
O
HO
H
OH
O
HO
O
O
O
O
H
HO
Camelliatannin F
Fig. 1.4 Conversion of camelliatannins C and E into camelliatannins B and A, and
conversion of camelliatannin A into camelliatannin F.
HO
OH
HO
O
1.3.4.1
Oligomers as main components in a plant species
Agrimonia pilosa
(
Rosaceae
), an antidiarrheic in Japan, produces
agrimoniin as the main component accompanied by small amounts of
potentillin, the monomer composing the agrimoniin molecule, and
several other monomers. Agrimoniin is also the main component in
Agrimonia
eupatria
. Oenothein B, a macrocyclic dimer, is the main
component in
Oenothera erythrosepala
(
Onagraceae
) and is
