New synthetic methodology that generates imidazopyridine analogs was utilized for kinase library synthesis. Computational screening identified the imidazopyridine scaffold as an active platform on the FLT3 kinase. Subsequently, a low molecularweight FLT3-directed library was constructed and screened. Resulting FLT3 inhibitors were found to be highly ligand efficient (LE) and possess LE values greater than clinical FLT3 inhibitors. Select compounds were progressed into cell based assays and were found to block FLT3-driven proliferation at sub-micromolar IC50
values, and aqueous solubility was increased by forming highly water soluble salts. The developed analogs represent validated FLT3 hits and can be utilized to identify potent, lead candidates.