(+/-)-1-(2,5-Dimethoxy-4-ethylthiophenyl)-2-aminopropane (ALEPH-2), a novel putative anxiolytic agent lacking affinity for benzodiazepine sites and serotonin-1A receptors.
Naunyn-Schmiedeberg's archives of pharmacology November 1, 1996 M Reyes-Parada, C Scorza, V Romero et al. 6 citations
The novel amphetamine derivative ALEPH-2, a putative anxiolytic, produced serotonergic syndrome symptoms like forepaw treading and flat body posture in rats, along with decreased motor activity. No significant effect on head shakes was observed, though variability was high. In mice, higher doses (4 mg/kg) caused significant hypothermia. The drug showed nanomolar affinity for 5-HT2A/2C receptors (Ki = 173 nM) but only micromolar or lower affinity for 5-HT1A, benzodiazepine, and GABAA receptors. These findings suggest ALEPH-2's anxiolytic-like effects involve serotonergic mechanisms, particularly 5-HT2A/2C receptor interactions.