Synthesis and in vitro antiproliferative activities of new quinoline derivatives are reported. Compounds 1d-g were the most active and the most potent antiproliferative agents. Compounds 1e and 1g showed superior potency than Sorafenib. The IC50 of compounds 1e and 1g were in submicromolar scale against 18 cancer cell lines. IC50 of compound 1e against C-RAF kinase was 0.10 μM.