Comparative potencies of 3,4-methylenedioxymethamphetamine (MDMA) analogues as inhibitors of [3
H]noradrenaline and [3
H]5-HT transport in mammalian cell lines
摘要:
Background and purpose:Illegal ‘ecstasy’ tablets frequently contain 3,4‐methylenedioxymethamphetamine (MDMA)‐like compounds of unknown pharmacological activity. Since monoamine transporters are one of the primary targets of MDMA action in the brain, a number of MDMA analogues have been tested for their ability to inhibit [3H]noradrenaline uptake into rat PC12 cells expressing the noradrenaline transporter (NET) and [3H]5‐HT uptake into HEK293 cells stably transfected with the 5‐HT transporter (SERT).Experimental approach:Concentration–response curves for the following compounds at both NET and SERT were determined under saturating substrate conditions: 4‐hydroxy‐3‐methoxyamphetamine (HMA), 4‐hydroxy‐3‐methoxymethamphetamine (HMMA), 3,4‐methylenedioxy‐N‐hydroxyamphetamine (MDOH), 2,5‐dimethoxy‐4‐bromophenylethylamine (2CB), 3,4‐dimethoxymethamphetamine (DMMA), 3,4‐methylenedioxyphenyl‐2‐butanamine (BDB), 3,4‐methylenedioxyphenyl‐N‐methyl‐2‐butanamine (MBDB) and 2,3‐methylenedioxymethamphetamine (2,3‐MDMA).Key results:2,3‐MDMA was significantly less potent than MDMA at SERT, but equipotent with MDMA at NET. 2CB and BDB were both significantly less potent than MDMA at NET, but equipotent with MDMA at SERT. MBDB, DMMA, MDOH and the MDMA metabolites HMA and HMMA, were all significantly less potent than MDMA at both NET and SERT.Conclusions and implications:This study provides an important insight into the structural requirements of MDMA analogue affinity at both NET and SERT. It is anticipated that these results will facilitate understanding of the likely pharmacological actions of structural analogues of MDMA.British Journal of Pharmacology (2007) 152, 1121–1130; doi:10.1038/sj.bjp.0707473; published online 24 September 2007
Demethyl analogs of psychoactive methoxyphenalkylamines: synthesis and serotonin receptor affinities
作者:Richard A. Glennon、Stephen M. Liebowitz、Dianne Leming-Doot、John A. Rosecrans
DOI:10.1021/jm00183a006
日期:1980.9
5-dimethoxyphenalkylamines increases their affinity for the serotonin receptors of the isolated rat fundus preparation. In several instances, demethylation of methoxyphenalkylamines results in compounds which produce an antagonism which is not of a competitive nature. With respect to 1-(2,5-dimethoxy-4-methylphenyl)-2-aminopropane (DOM), demethylation of the 2-methoxy group alters affinity in a manner which parallels