NMDA receptor affinities of 1,2-diphenylethylamine and 1-(1,2-diphenylethyl)piperidine enantiomers and of related compounds.
We resolved 1,2-diphenylethylamine (DPEA) into its (S)- and (R)-enantiomer and used them as precursors for synthesis of (S)- and (R)-1-(1,2-diphenylethyl)piperidine, flexible homeomorphs of the NMDA channel blocker MK-801. We also describe the synthesis of the dicyclohexyl analogues of DPEA. These and related compounds were tested as inhibitors of [(3)H]MK-801 binding to rat brain membranes. Stereospecificity ranged between factors of 0.5 and 50. Some blockers exhibited stereospecific sensitivity to the modulator spermine. Our results may help to elucidate in more detail the NMDA channel pharmacophore.
Center for Brain Research, Medical University of Vienna, Spitalgasse 4, Vienna, Austria. michael.berger@meduniwien.ac.at
Michael L
ML
Berger
Anna
A
Schweifer
Patrick
P
Rebernik
Friedrich
F
Hammerschmidt
D000818:Animals; D001921:Brain / Q000187:drug effects / Q000378:metabolism; D016291:Dizocilpine Maleate / Q000037:antagonists & inhibitors / Q000378:metabolism / Q000494:pharmacology; D007700:Kinetics; D008566:Membranes / Q000187:drug effects / Q000378:metabolism; D010627:Phenethylamines / Q000737:chemistry* / Q000494:pharmacology; D010880:Piperidines / Q000737:chemistry* / Q000494:pharmacology; D051381:Rats; D016194:Receptors, N-Methyl-D-Aspartate / Q000037:antagonists & inhibitors / Q000737:chemistry* / Q000378:metabolism; D013237:Stereoisomerism
D010627:Phenethylamines; D010880:Piperidines; D016194:Receptors, N-Methyl-D-Aspartate; D016291:Dizocilpine Maleate