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Synthesis of novel 5-substituted phenyl-3-(p-isopropylphenyl)-1-phenylformazan and their biological activities

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Novel 1-substituted 3-(p-isopropylphenyl)-5-phenylformazans (3a–g) were synthesized and characterized by elemental analysis, 1H NMR, and FT-IR techniques and UV-visible spectroscopy. Antiproliferative activities of 3a–g against HeLa and C6 cells were determined using the BrdU cell proliferation ELISA assay. 5-Florouracil was used as the positive control. The effects of substituents (–H, –CH3, and –I) and their positions (ortho, meta, and para) on the antiproliferative activities were evaluated. The results of the assay indicate that I substituent exhibited higher activity against the cells at the meta and para positions than –CH3 and –H substituents. 3a–g exhibited both high antiproliferative activities against C6 cells and noncytotoxicity. 3a–g may be anticancer drug candidates. |

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