Opioid activity of 4-imidazolidinone positional analogues of Leu-Enkephalin

Autor: Adel Nefzi, Markéta Rinnová, Richard A. Houghten
Rok vydání: 2002
Předmět:
Zdroj: Bioorganic & Medicinal Chemistry Letters. 12:3175-3178
ISSN: 0960-894X
DOI: 10.1016/s0960-894x(02)00678-9
Popis: Modulation of opioid activity was accomplished for analogues of Leu-enkephalin through incorporation of a 4-imidazolidinone moiety. The peptide backbone was constrained via a methylene bridge between two neighboring amides within its regular peptide sequence, which was expected to disrupt the secondary structure of the original molecule. Five positional analogues of Leu-enkephalin based on the same sequence and different location of the imidazolidinone-constrict were designed, synthesized, and examined for their affinity to micro-, delta- and kappa-opioid receptors.
Databáze: OpenAIRE