A series of novel N-arylpyrazole derivatives (4a–4l) bearing the sulfonamide moiety were synthesized by the condensation reaction of 1,3-dicarbonyl compounds with 4-hydrazinylbenzenesulfonamide. The structures of the obtained compounds were established on the basis of elemental (C, H, and N) and spectral analysis (1H NMR, 13C NMR, ESIMS, and FT-IR). These compounds were tested for their in vitro cytotoxic activity against three human tumor cell lines: MCF-7, Hela, and A549. The results showed that most of the obtained compounds exhibited promising cytotoxicity against the tested cell lines with low IC50 values. The pyrazole derivative 4k, bearing two methoxy groups on the 3-position and 4-position of the phenyl ring, was the most effective one. Its inhibition of cell growth of MCF-7 cells was better than that of celecoxib and cisplatin.
Research on Chemical Intermediates – Springer Journals
Published: Jul 5, 2016
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