O
O
O
O
Aryl tetrahydronaphthalene Aryl naphthalene
Dibenzylbutane
CH 3
CH 3
O
O
C
H 3
CH 3
C
H 3
CH 3
O
Dibenzyl butyrolactone
Diphenyl cyclobutane
Diphenyl tetrahydrofuran
O
O
O
O
Diphenyl furofuran
Dibenzo-cyclooctadiene
O
H
O
OH
OH
O
H
H 3 CO
O
H
O
OCH 3
OH
O
H
H 3 CO
(-)-Taxiresinol
(-)-Lariciresinol
OH
OH
OH
OCH 3
O
H
H 3 CO
O
O
OH
O
O
OCH 3
OCH 3
H 3 CO
(-)-Isolariciresinol
Podophyllotoxin
Fig. 10.19 The structure of lignan derivatives derived from plant sources
352
C. C. Kandar