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Summary
Cathinone, a stimulant found in khat (Catha edulis), is identified as the primary psychoactive compound responsible for the plant's effects. Previous research focused on d-norpseudoephedrine, but cathinone is now understood to be the main active agent.
Area of Science:
- Pharmacology
- Organic Chemistry
- Ethnobotany
Background:
- Khat (Catha edulis) chewing is a widespread practice with stimulant effects.
- The stimulant properties were previously attributed mainly to d-norpseudoephedrine.
- A need existed to fully elucidate the active chemical constituents of fresh khat.
Purpose of the Study:
- To comprehensively review the chemical composition of khat.
- To isolate and characterize the central nervous system active principles in fresh khat.
- To identify the primary psychoactive compound responsible for khat's effects.
Main Methods:
- Literature review of khat's chemical composition.
- Comprehensive chemical analysis at the United Nations Narcotics Laboratory.
- Isolation and characterization of phenylalkylamines and other compounds from fresh khat.
Main Results:
- Cathinone ((-)-alpha-aminopropiophenone) was identified as the main phenylalkylamine in fresh khat.
- Pharmacological studies suggest cathinone is responsible for khat's stimulant activity and abuse potential.
- Decomposition products like norpseudoephedrine and norephedrine were also isolated.
Conclusions:
- Cathinone is the principal psychoactive constituent of fresh khat.
- The identification of cathinone clarifies the pharmacological effects of khat.
- Understanding khat's chemistry is crucial for addressing its abuse potential.