NON-NITROGENOUS HALLUCINOGENS 
on Saal 
Phenylpropenes Monoterpenoid Chromenes 
(Cannabinoids) 
NITROGENOUS HALLUCINOGENS 
OH 
| ( | 
= R 
R oO PGs 7. 
Isoxazoles Tropanes Quinolizidines 
CT) OL | 
r/ <p | R“ ~R 
R 
B-Phenethylamines Tryptamines 
R -R 
Ove Vi 
=< H 
| 8 " 
R 
68 -Carbolines Ergolines Iboga Indoles 
Figure |. Basic skeleta of principal hallucinogens 
126 
