Abstract
Fourteen novel 1,2,4-triazole Schiff bases containing the 1-[bi-(4-fluorophenyl)methyl]piperazine group were prepared, in good yield (73–85 %), in five steps starting from 1-[bi-(4-fluorophenyl)methyl]piperazine and ethyl chloroacetate, with use of microwave irradiation. The structures of the new compounds were characterized by IR spectroscopy, MS, 1H and 13C NMR spectroscopy, and elemental analysis. Assay of the newly prepared compounds for bioactivity against tumor cells revealed that the most of the compounds had good to excellent inhibitory activity against CDC25B (99.70 % inhibition). The 4-amino-5-[4-bi-(4-fluorophenyl) methylpiperazin-1-ylmethyl]-1,2,4-triazole-3-thione group was found to be beneficial group improving anti-tumor activity to some extent.
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Acknowledgments
The authors are grateful to the National Center for Drug Screening, Shanghai, P.R. China, for evaluation of inhibitory activity against CDC25B. We also thank the Fundamental Research Funds for the Central Universities, Southwest University for Nationalities (no. 12NZYTH03), the Sichuan Provincial Department of science and technology support program (no. 2015NZ0033), and the Postgraduate Degree Construction Project of Southwest University for Nationalities (no. 2014XWD-S0703) for financial support.
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Ding, Y., Zhang, Z., Zhang, G. et al. Green synthesis and evaluation of the antitumor activity of a novel series of 3-[4-bi-(4-fluorophenyl)methylpiperazinyl]-4-amino-5-thione-1,2,4-triazole Schiff bases. Res Chem Intermed 42, 3105–3116 (2016). https://doi.org/10.1007/s11164-015-2200-5
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DOI: https://doi.org/10.1007/s11164-015-2200-5