Imidazo[1,2-a]pyridines 4 were synthesized in one step from 2-aminopyridines and 2-bromoacephenones in good yield.
Six imidazo[1,2-a]pyridines derivatives were active on kinases with micromolar IC50. (0.7–8.9 μM).
The most active imidazo[1,2-a]pyridines derivative 4c inhibits kinases with a IC50 of 0.7 μM (CLK1) and 2.6 μM (DYRKA1).
Docking studies indicate that 4c good binding mode on CLK1 and DYRKA1.