The Antioxidant and Antiproliferative Activities of 1,2,3-Triazolyl-L-Ascorbic Acid Derivatives
作者:Anja Harej、Andrijana Meščić Macan、Višnja Stepanić、Marko Klobučar、Krešimir Pavelić、Sandra Kraljević Pavelić、Silvana Raić-Malić
DOI:10.3390/ijms20194735
日期:——
3-triazole L-ascorbic acid (L-ASA) conjugates with hydroxyethylene spacer as well as their conformationally restricted 4,5-unsaturated analogues were synthesized as potential antioxidant and antiproliferative agents. An evaluation of the antioxidant activity of novel compounds showed that the majority of the 4,5-unsaturated L-ASA derivatives showed a better antioxidant activity compared to their saturated
合成了具有羟基乙烯间隔基的新型4-取代的1,2,3-三唑L-抗坏血酸(L-ASA)共轭物及其构象受限的4,5-不饱和类似物,作为潜在的抗氧化剂和抗增殖剂。对新化合物的抗氧化活性的评估表明,大多数4,5-不饱和L-ASA衍生物与其饱和对应物相比具有更好的抗氧化活性。间羟基苯基(7j),对戊基苯基(7k)和2-羟乙基(7q)取代的4,5-不饱和1,2,3-三唑L-ASA衍生物表现出非常有效和快速的(5分钟内)2,2 -二苯基-1-吡啶并肼基(DPPH•)自由基清除活性(7j,7k:IC 50 = 0.06mM; 7q:IC 50 = 0.07mM)。体外清除活性数据得到计算机硅量子化学建模的支持。计算了在L-ASA片段的C2-OH或C3-OH基团处去质子化的阴离子的氢原子转移和电子转移自由基清除路径的热力学参数。通过主成分分析的结构活性分析(SAR)表明,通过具有良好反应参数的OH基团参与的自