Abstract
New N-substituted-3-phenyl-1,6-naphthyridinone derivatives are designed and synthesized, based on structural modification of our previously reported compound 3. Extensive enzyme-based SAR studies and PK evaluation led to the discovery of compound 4r, with comparable c-Met potency to that of Cabozantinib and high VEGFR-2 selectivity, while Cabozantinib displayed no VEGFR-2 selectivity. More importantly, at oral doses of 45 mg/kg (Q.D.), compound 4r exhibits significant tumor growth inhibition (93%) in a U-87MG human gliobastoma xenograft model. The promising selectivity against VEGFR-2 and excellent tumor growth inhibition of compound 4r suggest that it could be used as a new lead molecule for further discovery of selective type II c-Met inhibitors.
Keywords:
1,6-Naphthyridone; Antitumor efficacy; VEGFR-2 selectivity; c-Met kinase inhibitor.
Copyright © 2020 Elsevier Ltd. All rights reserved.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Animals
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Binding Sites
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Cell Line, Tumor
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Cell Proliferation / drug effects
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Drug Design*
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Humans
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Mice
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Molecular Docking Simulation
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Naphthyridines / chemistry*
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Naphthyridines / metabolism
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Naphthyridines / pharmacology
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Naphthyridines / therapeutic use
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Neoplasms / drug therapy
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Neoplasms / pathology
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Protein Kinase Inhibitors / chemistry*
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Protein Kinase Inhibitors / metabolism
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Protein Kinase Inhibitors / pharmacology
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Protein Kinase Inhibitors / therapeutic use
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Proto-Oncogene Proteins c-met / antagonists & inhibitors*
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Proto-Oncogene Proteins c-met / metabolism
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Quinolines / chemistry*
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Structure-Activity Relationship
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Transplantation, Heterologous
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Vascular Endothelial Growth Factor Receptor-2 / antagonists & inhibitors*
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Vascular Endothelial Growth Factor Receptor-2 / metabolism
Substances
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Naphthyridines
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Protein Kinase Inhibitors
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Quinolines
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Proto-Oncogene Proteins c-met
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Vascular Endothelial Growth Factor Receptor-2