A fairly small-sized aryl nitrogen mustard–conjugated terpyridine is synthesized in only two steps as a ligand to chelate with RuCl3 to afford a [Ru(tpy-CM)2]Cl2 complex. This complex exhibits prominent antiproliferative activity toward several tumor cells. Further studies conclusively show that the complex suppresses human renal clear cell carcinoma cells (786-O cells) by inducing G1 phase cell cycle arrest and apoptosis. This work provides a synthetic and therapeutic model for nitrogen mustard-containing metal complexes.
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