Aristolane sesquiterpenes
CHO
1,9-Aristoladiene
9-Aristolen-12-al
Nardosinane sesquiterpenes
OH
O
OH
O
O
H
Kanshone A
Lemnacarnol
Cacalol sesquiterpenes
O
OH
O
OH
O
Cacalol
Cacalolide
Cadinane sesquiterpenes
H
H
O
OH
H
H
Artemisinic acid
α-Cadinene
Alliacane sesquiterpenes
O
O
O
OH
O
O
O
OH
Alliacol A
Alliacolide
Oplopane sesquiterpenes
O
O
O
O
O
OAc
O
H
O
Abrotanifolone
10-Hydroxy-4-oplopanone
Drimane sesquiterpenes
O
O
MeO
O
OMe
OH
O
Cryptoporic acid A
CHO
O
O
8-Drimen-11-al
Marasmene
(Continued)
Major structural types
Specific examples
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CH6 NATURAL PRODUCT CHEMISTRY