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Johnson MP, Frescas SP, Oberlender R, Nichols DE. 
“Synthesis and pharmacological examination of 1-(3-methoxy-4-methylphenyl)-2-aminopropane and 5-methoxy-6-methyl-2-aminoindan: similarities to 3,4-(methylenedioxy)methamphetamine (MDMA)”. 
J Med Chem. 1991;34(5):1662-8.
The racemate and the enantiomers of 1-(3-methoxy-4methylphenyl)-2-aminopropane (6) and racemic 5-methoxy-6-methyl-2-aminoindan (11) were tested for stimulus generalization in the two-lever drug-discrimination paradigm. Both 6 and 11 were found to substitute with high potency in 3,4*(methylenedioxy)methamphetamine (1) and (S)-1-(1,3-benzodioxol-5-yl)-2*(methylamino)butane (2) trained rats. In the latter assay, both enantiomers of 6 had identical potencies, but their dose-response curves were not parallel. Racemic 6, but not 11, partially substituted for LSD. Racemic 6 and 11 did not substitute in (S)-amphetamine trained rats. All of the test compounds ware potent inhibitors of [3H]-5-HT uptake into Synaptosomes in vitro, with the S enantiomer of 6 being most active. Rat brain monoamine levels were unaltered 1 week following a single high dose (10 or 20 mg/kg, sc) of 6 or 11, or two weeks following a subacute dosing regimen (20 mg/kg, sc, twice a day for 4 days). In addition, radioligand-binding parameters in rat brain homogenate with the 5-HT uptake inhibitor [3H]paroxetine were unchanged after subacute dosing with either racemic 6 or 11. The results indicate that compounds 6 and 11 have animal behavioral pharmacology similar to the methylenedioxy compounds 1 and 2, but that they do not induce the serotonin neurotoxicity that has been observed for the latter two drugs.
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