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ID: ALA4043100
Journal: Bioorg Med Chem
Title: Antitrichomonal activity of δ opioid receptor antagonists, 7-benzylidenenaltrexone derivatives.
Authors: Kutsumura N, Koyama Y, Nagumo Y, Nakajima R, Miyata Y, Yamamoto N, Saitoh T, Yoshida N, Iwata S, Nagase H.
Abstract: The 7-benzylidenenaltrexone (BNTX) derivatives 2a-v, 3a-c, 13a-c, and 14a were synthesized from naltrexone (1) and evaluated for their antitrichomonal activity. The structure-activity-relationship studies found that 4-iodo-BNTX (2g) showed the highest activity (IC50=10.5µM) and the affinity for the opioid receptor was less important for antitrichomonal activity against Trichomonas vaginalis. The morphinan skeleton bearing both the double bond for a Michael acceptor and the phenolic hydroxy group would be a specific template for development of antitrichomonal agents. In addition, the mechanism of the antitrichomonal activity of the BNTX derivatives may differ from that of the standard drug, metronidazole.
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