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  • Title: Cardiotonic agents. 1. Novel 8-aryl-substituted imidazo[1,2-a]- and -[1,5-a]pyridines and imidazo[1,5-a]pyridinones as potential positive inotropic agents.
    Author: Davey D, Erhardt PW, Lumma WC, Wiggins J, Sullivan M, Pang D, Cantor E.
    Journal: J Med Chem; 1987 Aug; 30(8):1337-42. PubMed ID: 3039131.
    Abstract:
    Several 8-arylimidazo[1,2-a]pyridines, 8-arylimidazo[1,5-a]pyridines, and 8-arylimidazo[1,5-a]pyridinones were prepared and tested in vitro for potential cardiac inotropic and electrophysiological activity. Selected analogues were further tested in vivo in canine hemodynamic and cardiac electrophysiology models. Compounds having an imidazole substituent consistently showed activity. A pharmacophoric relationship between heterocycle-phenyl-imidazole and positive inotropic activity was noted. The significance of this relationship is discussed.
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