Journal
ACS MEDICINAL CHEMISTRY LETTERS
Volume 9, Issue 3, Pages 215-220Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsmedchemlett.7b00485
Keywords
2-Formylpyridines; fibroblast growth factor receptor 4; kinase inhibitors; reversible-covalent binders; binding kinetics; hepatocellular carcinoma
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As part of a project to identify FGFR4 selective inhibitors, scaffold morphing of a 2-formylquinoline amide hit identified series of 2-formylpyridine ureas (2-FPUs) with improved potency and physicochemical properties. In particular, tetrahydronaphthyridine urea analogues with cellular activities below 30 nM have been identified. Consistent with the hypothesized reversible-covalent mechanism of inhibition, the 2-FPUs exhibited slow binding kinetics, and the aldehyde, as the putative electrophile, could be demonstrated to be a key structural element for activity.
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