Biological Active Analogues of the Opioid Peptide Biphalin: Mixed α/β3-Peptides
摘要:
Natural residues of the dimeric opioid peptide Biphalin were replaced by the corresponding homo-beta(3) amino acids. The derivative 1 containing h beta(3) Phe in place of Phe showed good mu- and delta-receptor affinities (K-i(delta) = 0.72 nM; K-i(mu) = 1.1 nM) and antinociceptive activity in vivo together with an increased enzymatic stability in human plasma.
Natural residues of the dimeric opioid peptide Biphalin were replaced by the corresponding homo-beta(3) amino acids. The derivative 1 containing h beta(3) Phe in place of Phe showed good mu- and delta-receptor affinities (K-i(delta) = 0.72 nM; K-i(mu) = 1.1 nM) and antinociceptive activity in vivo together with an increased enzymatic stability in human plasma.