Glycogen phosphorylase inhibitory effects of 2-oxo-1,2-dihydropyridin-3-yl amide derivatives |
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Authors: | N David Karis Wendy A Loughlin Ian D Jenkins Peter C Healy |
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Institution: | 1. Eskitis Institute for Cell and Molecular Therapies, Nathan Campus, Griffith University, Brisbane, QLD 4111, Australia;2. School of Biomolecular and Physical Sciences, Nathan Campus, Griffith University, Brisbane, QLD 4111, Australia |
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Abstract: | Glycogen phosphorylase (GP) plays a crucial role in the conversion of glycogen to glucose-1-phosphate (and in turn glucose) and is a promising target for therapeutic intervention in diabetes. In this study we synthesized new derivatives of 2-oxo-1,2-dihydropyridin-3-yl amides using a facile aminolysis reaction, in which different alkyl and aryl esters and amides are substituted at N-1 and C-3 of the heterocyclic ring. The in vitro inhibitory activity of compounds against glycogen phosphorylase was evaluated. From this series the most potent compound exhibits good GPa inhibition (IC50 = 6.3 μM). A preliminary study of these compounds showed that anti-GP activity was decreased by the incorporation of a C3–N carbonyl group and favored by increased lipophilicity. |
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