A new opioid designed multiple ligand derived from the mu opioid agonist endomorphin-2 and the delta opioid antagonist pharmacophore Dmt-Tic

SALVADORI S;TRAPELLA C;FIORINI S;NEGRI L;LATTANZI R;BRYANT S. D;JINSMAA Y;LAZARUS L. H;BALBONI, GIANFRANCO

2007-01-01

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Abstract

Opioid compounds with mixed micro agonist/delta antagonist properties could be used as analgesics with low propensity to induce tolerance and dependence. Here we report the synthesis of a new designed multiple ligand deriving from the micro selective agonist endomorphin-2 and the delta selective antagonist pharmacophore Dmt-Tic. As predicted, the resulting bivalent ligand showed a micro agonist/delta antagonist profile deriving from the corresponding activities of each pharmacophore.