Synthesis of a novel potent cyclic peptide MC4-ligand by ring-closing metathesis
2005
The synthesis of a novel potent cyclic peptide MC4-ligand by ring-closing metathesis (RCM) is described. Based on the Ac-Nle-Gly-Lys-d-Phe-Arg-Trp-Gly-NH2–MC4 ligand, Ac-Nle-Alg-Lys-d-Phe-Arg-Trp-Alg-NH2 was designed and synthesized followed by cyclization using RCM. Both compounds are high affinity and selective MC4-R-agonists. The cyclic RCM-peptide was more potent in a rat-grooming assay.
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