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Opioid agonists and antagonists - Peptides containing N-terminal allyl groups and or a thiomethylene linkage in place of a peptide-bond

By BALBONI G, SALVADORI S, MARASTONI M, TOMATIS R, BOREA PA and BIANCHI C

Abstract

Peptides containing N-allyl or N,N-diallyl groups at the N-terminus have been synthesized as potential opioid antagonists. A number of analogues with an amide bond replaced by a thiomethylene group have also been prepared. In brain binding assays and in guinea-pig ileum and mouse vas deferens preparations, the analogues generally displayed low affinity for µ- and δ-receptors as well as agonist activities in in vitro tests. N,N-Diallyl-Phe-D-Ala-Phe-Gly-NH2(28) was found to be a moderately potent but highly selective antagonist at δ opiate receptors

Year: 1988
DOI identifier: 10.1039/p19880001645
OAI identifier: oai:iris.unica.it:11584/6792
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