Novel multiple opioid ligands based on 4-aminobenzazepinone (Aba), azepinoindole (Aia) and tetrahydroisoquinoline (Tic) scaffolds.
The dimerization and trimerization of the Dmt-Tic, Dmt-Aia and Dmt-Aba pharmacophores provided multiple ligands which were evaluated in vitro for opioid receptor binding and functional activity. Whereas the Tic- and Aba multimers proved to be dual and balanced delta/mu antagonists, as determined by the functional [S(35)]GTPgammaS binding assay, the dimerization of potent Aia-based 'parent' ligands unexpectedly resulted in substantial less efficient receptor binding and non-active dimeric compounds.
Ballet
Steven
S
Department of Organic Chemistry, Vrije Universiteit Brussel, B-1050 Brussels, Belgium. sballet@vub.ac.be
Marczak
Ewa D
ED
Feytens
Debby
D
Salvadori
Severo
S
Sasaki
Yusuke
Y
Abell
Andrew D
AD
Lazarus
Lawrence H
LH
Balboni
Gianfranco
G
Tourwé
Dirk
D
D000818:Animals; D001552:Benzazepines / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology; D019281:Dimerization; D015195:Drug Design; D007211:Indoles / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology; D008024:Ligands; D011485:Protein Binding; D051381:Rats; D017465:Receptors, Opioid, delta / Q000037:antagonists & inhibitors* / Q000378:metabolism; D017450:Receptors, Opioid, mu / Q000037:antagonists & inhibitors* / Q000378:metabolism; D044005:Tetrahydroisoquinolines / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology
D001552:Benzazepines; D007211:Indoles; D008024:Ligands; D017465:Receptors, Opioid, delta; D017450:Receptors, Opioid, mu; D044005:Tetrahydroisoquinolines