In Pharmaceutical Sciences (Pharmacognosy)

- 20 -
INTRODUCTION
Name of Compound Structure Species & ref.
G- Arylnaphthalide lignan type:
R1= R3= OMe, R2=H;
Phyllamyricin D
R1= R2= H, R3= OMe;
Phyllamyricin E
R= OH;
Cleistanthin A
R= OMe;
Cleistanthin A methyl ester
R= OH;
Cleistanthoside A
R=OAc;
Taxodiifoloside
Phyllnirurin
Virgatyne
4. Tannins:
MeO
MeO
MeO
MeO
MeO
MeO
MeO
MeO
O
R
O
O
H-Neolignan type :
O
O
O
O
I- Norlignan type:
O
O
O
O
O
HO
O
OMe
CH 2OH
OH
O
O
O
O
R
O
O
OH
OH
O
OH
O
myrtifolius (69)
taxodiifolius (39)
taxodiifolius (39)
niruri (66)
virgatus (40)
Tannins are reported to be widely distributed through different
species of the genus Phyllanthus; they are presented in the following
tables:
MeO
MeO
R 1 R2 R 3
O
O
O
O