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O
HO
O
COOH
HO
O
R
1
HO
R
2
R
1
9
OR
2
O
1
R
1
, R
2
= OH
2
R
1
= H, R
2
= OH
3
R
1
= OCH
3
, R
2
= OH
4
R
1
, R
2
= OCH
3
R
3
5
R
1
= OH, R
2
= CH
3
R
4
6
R
1
= OH, R
2
= H
7
R
1
, R
2
= H
8
R
1
= OCOCH
3
, R
2
= H
R
2
O
O
R
1
O
OH
O
COOH
HO
O
12
R
1
, R
2
, R
3
, R
4
= H
13
R
1
= OH; R
2
, R
3
, R
4
= H
HO
14
R
1
, R
3
, R
4
= H; R
2
= CH
3
10
11
Fig. 7.1.
Main compounds from propolis samples identified by HPLC using PDA and MS detectors.
For names please refer to the text.
COOH
HO
O
COOH
H
O
H
H
HOOC
HOOC
15
16
17
OH
OMe
O
H
H
3
C
O
OH
O
H
OH
MeO
H
O
OH
HOOC
18
19
20
Fig. 7.2.
Compounds isolated from Brazilian propolis (Banskota
et al.,
1998). For names please refer
to the text.
OAc
O
O
O
O
O
H
H
O
O
O
OH
HO
OAc
OMe
OMe
21
22
Fig. 7.3.
Benzofurans isolated from Brazilian propolis (Banskota
et al.,
2000). For names please refer
to the text.
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