Novel antineoplastic agents with efficacy against multidrug resistant tumor cells

A novel series of pentafluorobenzenesulfonamides has been shown to inhibit the growth of a variety of human tumor cell lines. Among the cell types against which these agents were evaluated were the multidrug resistant (MDR) cell lines MCF-7/ADR and P388/ADR. The cytotoxic activity of members of this series of compounds was not affected by the multidrug resistant pump in MCF-7/ADR or P388/ADR cells. This article reports the discovery of a novel series of pentafluorobenzenesulfonamides as cytotoxic agents with efficacy againt a broad variety of human tumor cell lines, including those that exhibit the MDR phenotype.