A computer-aided predictions of antioxidant activities were performed with the Prediction Activity Spectra of Substances (PASS) program. Antioxidant activity of compounds 1, 3, 4 and 5 were studied using 1,1-diphenyl-2-picrylhydrazyl (DPPH) and lipid peroxidation assays to verify the predictions obtained by the PASS program. Compounds 3 and 5 showed more inhibition of DPPH stable free radical at 10−4 M than the well-known standard antioxidant, butylated hydroxytoluene (BHT). Compound 5 exhibited promising in vitro inhibition of Fe2+-induced lipid peroxidation of the essential egg yolk as a lipid-rich medium (83.99%, IC50 16.07 ± 3.51 µM/mL) compared to a-tocopherol (a-TOH, 84.6%, IC50 5.6 ± 1.09 µM/mL). The parameters for drug-likeness of these BHT analogues were also evaluated according to the Lipinski’s “rule-of-five” (RO5). All the BHT analogues were found to violate one of the Lipinski’s parameters (LogP > 5), even though they have been found to be soluble in protic solvents. The predictive polar surface area (PSA) and absorption percent (% ABS) data allow us to conclude that they could have a good capacity for penetrating cell membranes. Therefore, one can propose these new multipotent antioxidants (MPAOs) as potential antioxidants for tackling oxidative stress and lipid peroxidation processes.
利用物质预测活性光谱(PASS)程序对抗氧化活性进行了计算机辅助预测。利用 1,1
-二苯基-2-苦基
肼(
DPPH)和脂质过氧化试验研究了化合物 1、3、4 和 5 的抗氧化活性,以验证 PASS 程序的预测结果。与众所周知的标准
抗氧化剂丁基羟基
甲苯(
BHT)相比,化合物 3 和 5 在 10-4 M 时对
DPPH 稳定自由基的抑制作用更强。与
生育酚(a-TOH,84.6%,IC50 5.6 ± 1.09 µM/mL)相比,化合物 5 对富含脂质的蛋黄中 Fe2+诱导的脂质过氧化反应具有良好的体外抑制作用(83.99%,IC50 16.07 ± 3.51 µM/mL)。这些
BHT 类似物的药物相似性参数也是根据利平斯基 "五法则"(RO5)进行评估的。发现所有
BHT 类似物都违反了 Lipinski 的一个参数(LogP > 5),尽管它们已被发现可溶于质子溶剂。根据预测的极性表面积(P
SA)和吸收百分比(%
ABS)数据,我们可以得出结论,这些物质具有良好的细胞膜渗透能力。因此,我们可以认为这些新型多能
抗氧化剂(MPAOs)是应对氧化应激和脂质过氧化过程的潜在
抗氧化剂。