Three titanium (Ti) compounds bearing 2,6-bis(o-hydroxyalkyl)pyridine ligands were synthesized, and used in vitro cytotoxicity against triplenegative breast cancer (TNBC) MDA-MB-231 cells was studied. The results of in vitro cytotoxicity of the complexes against TNBC cells revealed that ( H L Me Ti-O) 4 (IC 50 = 0.91 μM) exerted a significant inhibitory effect on the proliferation of TNBC cells. Thus, titanium alkoxide complexes as nonplatinum complex could be used for structural optimization for treating breast cancer cells in the future.2,6-bis(o-hydroxyalkyl)pyridine ligand, in vitro cytotoxicity, nonplatinum complex, pincer complexes, titanium complex, TNBC cell