4.5 Article

Discovery of a Novel Class of Imidazo[1,2-a]Pyridines with Potent PDGFR Activity and Oral Bioavailability

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ACS MEDICINAL CHEMISTRY LETTERS
卷 5, 期 1, 页码 78-83

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AMER CHEMICAL SOC
DOI: 10.1021/ml4003953

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Platelet-derived growth factor; fluoro-piperidine; fluorine; Pgp

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The in silico construction of a PDGFR beta kinase homology model and ensuing medicinal chemistry guided by molecular modeling, led to the identification of potent, small molecule inhibitors of PDGFR Subsequent exploration of structure-activity relationships (SAR) led to the incorporation of a constrained secondary amine to enhance selectivity. Further refinements led to the integration of a fluorine substituted piperidine, which resulted M significant reduction of P-glycoprotein (Pgp) mediated efflux and improved bioavailability. Compound 28 displayed oral exposure in rodents and had a pronounced effect in a pharmacokinetic-pharmacodynamic (PKPD) assay.

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