Property-Based Design of KDR Kinase Inhibitors

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Abstract
Small molecule inhibitors of KDR kinase activity have typically possessed poor intrinsic physical properties including low aqueous solubility and high lipophilicity. These features have often conferred limited cell permeability manifested in low levels of cell-based KDR inhibitory activity and oral bioavailability. Thus, the design of inhibitors with appropriate physical properties has played a critical role in the development of clinical candidates. We present a variety of structural modifications that have afforded improvements in physical properties and thereby have addressed suboptimal cellular potency and pharmacokinetics for three unique classes of KDR kinase inhibitors.

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