Abstract—

Derivatives of sesquiterpene lactones modified at the lactone ring with a thiophenol residue have been synthesized. The resulting conjugates with thiophenol have capacity for the oxidation–elimination reaction by the action of ROS of a tumor cell with the release of initial cytotoxic lactones. It has been proposed to use the resulting sulfur-containing conjugates as ROS-activated prodrugs of sesquiterpene lactones. The antiproliferative properties of the conjugates have been examined on tumor and pseudonormal cell lines. The cytotoxicity of the conjugates is lower than that of parent lactones; however, in some cases, as with the conjugates of alantolactone with artemisiten, it remains moderate in all tumor cell lines tested.

中文翻译：

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倍半萜内酯与硫酚加成产物的合成及细胞毒活性

摘要——

已经合成了在内酯环上用苯硫酚残基修饰的倍半萜内酯衍生物。由此产生的与苯硫酚的结合物具有通过肿瘤细胞的 ROS 的作用与初始细胞毒性内酯的释放进行氧化消除反应的能力。已提议将所得含硫缀合物用作倍半萜内酯的 ROS 活化前药。已在肿瘤和假性正常细胞系上检查了缀合物的抗增殖特性。偶联物的细胞毒性低于母体内酯；然而，在某些情况下，如阿兰内酯与青蒿素的结合物，它在所有测试的肿瘤细胞系中保持中等。