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Insights into the modular design of kinase inhibitors and application to Abl and Axl†
Sameer Phadke,Lluis Lopez-Barcons,Nathalie Vandecan,Zhifen Wu,Taylor K. Johnson,Eric J. Lachacz,Sofia D. Merajver,Matthew B. Soellner
RSC Medicinal Chemistry Pub Date : 11/05/2021 00:00:00 , DOI:10.1039/D1MD00296A
Abstract

Scaffold hopping is a common strategy for generating kinase inhibitors that bind to the DFG-out inactive conformation. Small structural differences in inhibitor scaffolds can have significant effects on potency and selectivity across the kinome, however, these effects are often not studied in detail. Herein, we outline a design strategy to generate an array of DFG-out conformation inhibitors with three different hinge-binders and two DFG-pocket groups. We studied inhibitor selectivity across a large segment of the kinome and elucidated binding preferences that can be used in scaffold hopping campaigns. Using these analyses, we identified two selective inhibitors that display low nanomolar potency against Axl or wild-type and clinically relevant mutants of Abl.

Graphical abstract: Insights into the modular design of kinase inhibitors and application to Abl and Axl
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