Summary: | The aim of this study is to explain how new thiazole and selenophene moieties were obtained from 2-amino-4-(4-methylthiazol-2-yl)selenophene-3-carbonitrile (3) and to assess the antioxidant and cytotoxic properties of these new compounds. Compound 3 is prepared and subjected to react with each of CS2, malononitrile in EtOH/TEA, ECA, a mixture of HCl and AcOH, formamide, formic acid, malononitrile in the presence of EtONa to give their corresponding selenopyrimidine and selenopyridine derivatives 4–10. Moreover, compound 3 reacted with thiourea, hydrazine hydrate, CS2 in NaOH/DMF, and phenyl isothiocyanate to afford selenolo[2,3-d]pyrimidines 11–17 and related compounds. The recently synthesized compounds were tested for their DPPH radical scavenging and cytotoxic properties against the HePG-2 and MCF-7 cell lines. Compounds 5 and 11 demonstrated potential radical scavenging activity, but compounds 5 and 6 exhibited the strongest cytotoxic action against the examined cell lines. According to molecular docking data, the compounds under research are intriguing candidates for the development of new anticancer therapeutic targets.
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