The use of the system CF3SO2Na/tert-butyl-hydroperoxide (tert-ButOOH), recently reported for the efficient trifluoromethylation of a variety of heterocyclic aromatic compounds, has been here profitably exploited for the synthesis of 5-CF3-2′-deoxycytidine, 8-CF3-2′-deoxyadenosine, 8-CF3-2′-deoxyguanosine and 8-CF3-inosine, regioselectively obtained in good to acceptable yields following a very simple protocol. The bioactivity of these modified nucleosides, and particularly of the novel 8-CF3-2′-deoxyguanosine and 8-CF3-inosine, has been evaluated on a panel of tumour and non-tumour cell lines in preliminary in vitro cytotoxicity assays.
最近报道的系统 SO2Na/
叔丁基过氧化氢(tert-ButOOH)用于高效率三
氟甲基化多种杂环芳香化合物的应用,在此已被有效利用于合成5-
CF3-2′-
脱氧胞苷、8- -2′-
脱氧腺苷、8- -2′-
脱氧鸟苷和8- -
肌苷,这些产物均通过非常简单的步骤在良好至可接受的产率下区域选择性地获得。这些修饰核苷的
生物活性,特别是新型8- -2′-
脱氧鸟苷和8- -
肌苷,已在初步体外细胞毒性测试中对一系列肿瘤及非肿瘤细胞株进行了评估。