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J Med Chem. 1991 May;34(5):1656-61.

Synthesis and structure-activity relationships of deltorphin analogues.

Author information

1
Department of Pharmaceutical Sciences, University of Ferrara, Italy.

Abstract

In order to study the structure-activity relationships of natural opioid deltorphins (H-Tyr-D-Met-Phe-His-Leu-Met-Asp-NH2 and H-Tyr-D-Ala-Phe-Asp [or Glu]-Val-Val-Gly-NH2), 15 analogues were synthesized by the solution method. Their activities were determined in binding studies based on displacement of mu- and delta-receptor selective radiolabels from rat brain membranes and in two bioassays, using guinea pig ileum and mouse vas deferens. The obtained data indicate that the high delta-selectivity of deltorphins can be due to the constitution/conformation of the C-terminal part and, at least in part, to preselection by charge.

PMID:
1851843
DOI:
10.1021/jm00109a019
[Indexed for MEDLINE]

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