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A new series of 4-aryl-4H-chromenes bearing a 5-arylisoxazol-3-yl moiety at the C-4 position were prepared as potential anticancer agents. The in vitro cytotoxic activity of the synthesized compounds was investigated against a panel of tumor cell lines including MCF-7 (breast cancer), KB (nasopharyngeal epidermoid carcinoma), Hep-G2 (liver carcinoma), MDA-MB-231 (breast cancer), and SKNMC (human neuroblastoma) using the MTT colorimetric assay. Doxorubicin, a well-known anticancer drug, was used as positive standard drug. Among the synthesized compounds, the 5-(3-methylphenyl)isoxazol-3-yl analog (7j) showed the most potent cytotoxic activity against all five human tumor cell lines. A series of 2-amino-3-cyano-4-(5-arylisoxazol-3-yl)-4H-chromenes were prepared and evaluated against five cancer cell lines including MCF-7 (breast cancer), KB (nasopharyngeal epidermoid carcinoma), Hep-G2 (liver carcinoma), MDA-MB-231(breast cancer), and SKNMC (human neuroblastoma). Compound 7j having 5-(3-methylphenyl)isoxazol-3-yl at the C-4 position was the most active compound. Copyright
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Reference：
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem