Table 1. In Vitro Inhibitory Activities of Compounds 5a–5r against DDR1, DDR2, and Abl1^a.

^aDDR1- and DDR2-inhibition experiments were performed using the LANCE ULTRA kinase assay according to the manufacturer’s instructions. Abl1-activity experiments were performed using the FRET-based Z′-Lyte assay according to the manufacturer’s instructions. The data are mean values from at least four independent experiments.