Synthesis and biological evaluation of new pyrimidine-4-yl-ethanol derivatives as ROS1 kinase inhibitors.

As a part of trials to target ROS1 kinase with potential inhibitors, a novel series of pyrimidin-4-yl-ethanol and ethanone derivatives (4a-f, 5a-f, 6a-f and 7a-f) have been designed based on previously discovered lead compounds KIST301072 and KIST301080, and synthesized on 4-5 steps according to compounds. The structures of the newly synthesized compounds have been confirmed on (1)H-NMR, (13)C-NMR and IR. Most of the tested compounds showed ROS1 kinase inhibitory activity in micromolar range.