8
1 Introduction
HO
H
H
OH
O
H
O
H
H
OH
O
H
HO
HO
H
H
OH
O
H
O
H
H
OMe
O
H
RO
O
O
H
H
H
N
H
H
H
AcO
AcO
O
H
O
C 8 H 17
H
C 8 H 17
R = H, Me
(a) Baldwin et al. (1985)
Lupanone (14)
15
(b) Carr et al. (1988)
Lanostenone (16)
4 β-Demethyl lanostenone (17)
(c) Bore et al. (2000)
Ursolic acid (18)
Boswellic acid derivatives (19)
(d) Wen et al. (2010)
Oleanolic acid (5)
Hederagonic acid (1)
Scheme 1.5: Selected applications of Baldwin’s cyclopalladation reaction.