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A series of quinolone derivatives containing benzimidazole,benzoxazole or benzothiazole ring were synthesized.The cytotoxicity of 12 new compounds was evaluated in KB,Be17402,A2780 and HT-29 cell lines.Most of synthesized compounds showed moderate inhibitory activity against cancer cells.The inhibitory activities of 6k,against KB and A2780 tumor cells are comparable to that of topotecan,one of topoisomeraseⅠinhibitors.
A series of quinolone derivatives containing benzimidazole, benzoxazole or benzothiazole ring were synthesized. The cytotoxicity of 12 new compounds was evaluated as KB, Be17402, A2780 and HT-29 cell lines. Most of synthetic drugs indicating moderate inhibitory activity against cancer cells. activities of 6k, against KB and A2780 tumor cells are comparable to that of topotecan, one of topoisomerase I inhibitors.