Abstract:The synthesis of new dermorphin analogues is described. The (R)-alanine or phenylalanine residues of natural dermorphin were substituted by the corresponding α-methyl-β-azidoalanine or α-benzyl-β-azido(1-piperidinyl)alanine residues. The potency and selectivity of the new analogues were evaluated by a competitive receptor binding assay in rat brain using [(3) H]DAMGO (a μ ligand) and [(3) H]DELT (a δ ligand). The most active analogue in this series, Tyr-(R)-Ala-(R)-α-benzyl-β-azidoAla-Gly-Tyr-Pro-Ser-NH2 and i… Show more
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