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Dendritic tellurides acting as antioxidants

机译:树枝状碲化物作为抗氧化剂

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We have described the synthesis of a series of poly(aryl ether) dendrimers with telluride in the core and oligo(ethylene oxide) chains at the periphery which act as glutathione peroxidase (GPx) mimics. These series of compounds were well characterized by ~1H-NMR, ~(13)C-NMR and ESI-MS. Using different ROOH (H_2O_2, cumene hydroperoxide) for testing the antioxidizing properties of these compounds, we have found that from generation 0 to 2, the activity of the dendritic GPx mimics first decreased and then increased. This can be explained on the basis of a greater steric hindrance, going from generation 0 to 1, and stronger binding interactions going from generation 1 to 2. In other words, there exists a balance between binding interactions and steric hindrance that may optimize the GPx activity.
机译:我们已经描述了一系列聚(芳醚)树枝状大分子的合成,其核心具有碲化物,外围具有寡聚(环氧乙烷)链,可充当谷胱甘肽过氧化物酶(GPx)模拟物。通过〜1H-NMR,〜(13)C-NMR和ESI-MS很好地表征了这一系列化合物。使用不同的ROOH(H_2O_2,氢过氧化枯烯)测试这些化合物的抗氧化性能,我们发现从第0代到第2代,树突状GPx模拟物的活性先降低然后升高。这可以基于从第0代到第1代的更大的空间位阻和从第1代到第2代的更强的结合相互作用来解释。换句话说,结合相互作用和位阻之间存在平衡,可以优化GPx。活动。

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