Among fused-ring analogs, a clear trend was observed in activity: benzofuran-2-yl ( 6d ) < indole-2-yl ( 6f ) < benzothiophen-2-yl ( 6e ), with 6e showing the most pronounced effect, particularly for FGFR4.
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Design, Synthesis, and Biological Evaluation of 5',7-Disubstituted 7-Deaza-adenosine Analogues as Irreversible Pan-FGFR Inhibitors.
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