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Design, synthesis and evaluation of human telomerase inhibitors based upon a tetracyclic structural motif.

机译:基于四环结构基序的人类端粒酶抑制剂的设计,合成和评估。

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There is currently significant interest in the development of inhibitors of human telomerase for the treatment of cancer. We describe here the design and synthesis of a new class of mono-substituted small-molecule inhibitors of human telomerase based upon a tetracyclic structural motif. In contrast to the structurally related molecule 9-hydroxyellipticine, recently shown to inhibit telomerase activity in cell cultures but found to be inactive in a cell-free system, we demonstrate direct inhibition of the telomerase enzyme by the tetracyclic compounds in a modified cell-free TRAP assay. The most potent compounds exhibit activity in the low micromolar range and are thus comparable with some of the more active small-molecule telomerase inhibitors based on planar aromatic chromophores, previously described by ourselves and others. These compounds may represent useful leads for the development of more potent inhibitors of human telomerase.
机译:目前,对开发用于治疗癌症的人端粒酶抑制剂的研究非常感兴趣。我们在此描述基于四环结构基序的新型人类端粒酶单取代小分子抑制剂的设计和合成。与结构相关的分子9-羟基玫瑰树碱(最近被证明在细胞培养物中抑制端粒酶活性但在无细胞系统中失活)相反,我们证明了四环化合物在修饰的无细胞中对端粒酶的直接抑制作用TRAP分析。最有效的化合物在低微摩尔范围内表现出活性,因此可与本公司和其他公司先前基于平面芳族发色团的一些更具活性的小分子端粒酶抑制剂相媲美。这些化合物可代表开发更有效的人类端粒酶抑制剂的有用线索。

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