期刊
EUROPEAN JOURNAL OF MEDICINAL CHEMISTRY
卷 75, 期 -, 页码 222-232出版社
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.ejmech.2014.01.032
关键词
Alkylbisammonio quaternary salts; Muscarinic receptor subtypes; Muscarinic agonists; In vitro pharmacology; In vivo pharmacology; Analgesic activity
资金
- Dote Ricerca: FSE, Regione Lombardia
In this study, we synthesized and tested in vitro and in vivo two groups of bis(ammonio)alkane-type compounds, 6a-9a and 6b-9b, which incorporate the orthosteric muscarinic agonist iperoxo into a molecular fragment of the M-2-selective allosteric modulators W84 and naphmethonium. The agonist potency and efficacy of these hybrid derivatives at M-1, M-2 and M-3 muscarinic receptor subtypes and their anticholinesterase activity were evaluated on isolated tissue preparations. Their analgesic action was then assayed in vivo in the acetic acid writhing test and the occurrence of peripheral and central cholinergic side effects was also determined. The investigated hybrids behaved as potent muscarinic agonists and weak cholinesterase inhibitors. These effects were more pronounced for bisquatemary salts bearing the naphmethonium moiety than for the W84-containing analogs, and resulted in a significant analgesic activity in vivo. A promising profile was displayed by the naphmethonium-related compound 8b, which combined the most potent antinociception among the test compounds with the absence of relevant cholinergic side effects. (C) 2014 Elsevier Masson SAS. All rights reserved.
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