Regioselective synthesis, structural diversification and cytotoxic activity of (thiazol-4-yl)furoxans

The effective and regioselective synthesis of new (2-hydrazinylthiazol-4-yl)furoxan hydrobromides based on the condensation of (bromoacetyl)furoxans with thiosemicarbazide has been developed. The cytotoxic activity of their derivatives (with hydrazone, 4-thiazolo[2.3-c][1,2,4]triazole or pyrrole moieties) against two human cancer cell lines (A549, HCT116) was tested and several structures revealed moderate cytotoxic activity.