Synthesis of gemini triethylene-tetramine bridged bis-tridentate iron(III) chelators

Eight gemini bis-2-(2-hydroxyphenyl)-thiazole-4-carboxamide and -thiocarboxamide (BHPTC) chelators were efficiently synthesized. Mass spectrometry showed these compounds all form 1:1 complexes with iron(III). Three of these chelators exhibit promising antiproliferative activities when tested on human cancerous cell lines.