Synthesis and evaluation of 1-(arylsulfonyl)-2-[(methoxycarbonyl)sulfenyl]-1-methylhydrazines++ + as antineoplastic agents

Synthesis of sulfonylhydrazone- and acylhydrazone-substituted 8-ethoxy-3-nitro-2H-chromenes as potent antiproliferative and apoptosis inducing agents

3-Nitro-2H-chromenes have recently been identified as a novel class of potent antitumor agents. In view of the favorable effects shown by sulfonylhydrazones and acylhydrazones, we designed and synthesized a series of sulfonylhydrazone- and acylhydrazone-substituted 8-ethoxy-3-nitro-2H-chromene derivatives, and evaluated their cell growth inhibition activities against A549, KG-1, A2780, and K562 cells. All the tested compounds exhibited more potent antiproliferative activity than BENC-511 against KG-1 cells. These compounds displayed IC50 values in the nanomolar range against A2780 cells. Compound 7d showed prominent cytotoxicity against K562 cells with an IC50 of 0.11 µM, which was comparable to that of BENC-511. Compound 7d arrested K562 cells at the G1 phase at high concentrations and induced apoptosis in K562 cells. Furthermore, 7d increased the levels of cleaved caspase-3, decreased the expression of bcl-2 and induced the cleavage of poly(ADP-ribose) polymerase in K562 cells. Thus, this study provides the development of a series of novel compounds as effective antitumor agents with apoptotic death ability.

The antibacterial activity of some sulfonamides and sulfonyl hydrazones, and 2D-QSAR study of a series of sulfonyl hydrazones

Benzenesulfonicacid-1-methylhydrazide (1) and its four aromatic sulfonyl hydrazone derivatives (1a-1d), N-(3-amino-2-hydroxypropyl)benzene sulfonamide (2) and N-(2-hydroxyethyl)benzenesulfonamide (3) were synthesized and their structures were determined by IR, (1)H NMR, (13)C NMR, and LCMS techniques. Antibacterial activities of new synthesized compounds were evaluated against various bacteria strains by microdilution and disk diffusion methods. The experimental results show that presence of OH group on sulfonamides reduces the antimicrobial activity, and antimicrobial activities of the sulfonyl hydrazones (1a-1d) are smaller than that of the parent sulfonamide (1), except Candida albicans. In addition, 2D-QSAR analysis was performed on 28 aromatic sulfonyl hydrazones as antimicrobial agents against Escherichia coli and Staphylococcus aureus. In the QSAR models, the most important descriptor is total point-charge component of the molecular dipole for E. coli, and partial negative surface area (PNSA-1) for S. aureus.