Abstract
Novel carbazole aminoalcohols were designed and synthesized as anticancer agents. Among them, alkylamine-chain-substituted compounds showed the most promising antiproliferative activity, with IC50 values in the single-digit micromolar range against two human tumor cell lines. Topoisomerase I (topo I) is likely to be one of the targets of these compounds. Results of comet assays and molecular docking indicate that the representative compounds may act as topo I poisons, causing single-strand DNA damage by stabilizing the topo I-DNA cleavage complex. In particular, the most potent compound, 1-(butylamino)-3-(3,6-dichloro-9H-carbazol-9-yl)propan-2-ol (6), was shown to be able to induce G2 -phase cell-cycle arrest and apoptosis in HeLa cells.
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