Antitumor activity of methyl (Z)-2-(isothioureidomethyl)-2-pentenoate hydrobromide against leukemia cell lines via mitotic arrest and apoptotic pathways.

In a previous study, we described a series of 28 aryl- and alkyl-substituted isothiouronium salts with antitumor activity and selectivity toward a leukemia cell line. Among the synthesized compounds, methyl (Z)-2-(isothioureidomethyl)-2-pentenoate hydrobromide (IS-MF08) showed conspicuous activity. In the present study, we investigated the mechanism of action of IS-MF08.

Allylic isothiouronium salts: The discovery of a novel class of thiourea analogues with antitumor activity.

A series of 28 aryl- and alkyl-substituted isothiouronium salts were readily synthesized in high yields through the reaction of allylic bromides with thiourea, N-monosubstituted thioureas or thiosemicarbazide. The S-allylic isothiouronium salts substituted with aliphatic groups were found to be the most effective against leukemia cells. These compounds combine high antitumor activity and low toxicity toward non-tumoral cells, with selectivity index higher than 20 in some cases.

Synthesis of 1,3-thiazine-2,4-diones with potential anticancer activity.

2-Amino-1,3-thiazin-4-ones were subjected to acetylation followed by mild acid hydrolysis to give compounds containing the 1,3-thiazine-2,4-dione core. The potential of these S,N-containing heterocycles as antitumor agents against human cancer cell lines, among other types, was evaluated. The results show that phenyl- and naphthyl-substituted thiazinediones presented selective antitumoral activity against leukemia cells.