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Synthesis, cytotoxic activities and molecular modeling studies of some 2-aminonaphtho[2,3-d][1,3]thiazole-4,9-dione derivatives

2020    Yanik, Hulya; Ayan, Sumeyra; Akdemir, Atilla; Erdogan, Omer; Ustundag, Cem Bulent; Cevik, Ozge; Yilmaz, Ozgur

Quinones, especially 1,4-naphthoquinones, are one of the most significant and widely distributed phytochemical groups in nature. 1,4-Naphthoquinones and their synthetic derivatives are found to possess remarkable cytotoxic activities. In this study, a series of 2-aminonaphtho[2,3-d][1,3]thiazole-4,9-dione derivatives were synthesized and their structures were verified with spectral analysis. In vitro cytotoxic activities of the synthesized compounds were evaluated by using MTT assay against MKN-45 (Human Gastric cancer), MDA-MB-231 (Human Breast cancer) and HeLa (Human Cervical cancer) cell lines. Among the synthesized compounds, 3d inhibited MDA-MB-cell proliferation with an IC50 value of 0.276 mu M. Compound 3a inhibited HeLa and MKN-45 cell proliferation with IC50 values of 0.336 mu M and 8.769 mu M, respectively. Compound 3b inhibited HELA cell proliferation with an IC50 value of 0.269 mu M. Molecular docking results suggest that the ligands may bind to the hDNA TopoII beta binding pocket and partially exert their effects. These results propose that 2-aminonaphtho[2,3-d]thiazole-4,9-dion core has important biological effects and further explorations are worthwhile. (C)2020 ACG Publication. All right reserved.