Besides very interesting chem, I agree on that one, I also got suprised when I (reading this patent) found how broad applications these familly of substances can have.
...chronic treatments and alcohol or drug abuse (opioids, barbiturates, cannabis, cocaine, amphetamine, phencyclide, hallucinogens, benzodiazepines for example), as analgesics or potentiators of the analgesic activity of the narcotic and nonnarcotic drugs....
Interesting property:
"...The compounds of formula (I) exhibit advantageous pharmacological properties. These compounds possess a high affinity for the cannabinoid receptors..."
Wouldn't you agree?
1-2-3 ACiD