Synthesis of Novel Nitrogen-Containing Heterocycle Bromophenols and Their Interaction with Keap1 Protein by Molecular Docking
作者:Xiu Feng、Qin Wang、Jie Gao、Shu Ban、Qing Li
DOI:10.3390/molecules22122142
日期:——
5'-trihydroxydiphenylmethanoe (LM49), a bromophenol analogue that shows strong protection from oxidative stress injury owing to its superior anti-inflammatory, antioxidant, and anti-apoptotic properties. A series of novel nitrogen-containing heterocycle bromophenols were herein synthesized by introducing substituted piperidine, piperazine, and imidazole to modify 2-position of the lead compound LM49. By
我们之前曾报道过5,2'-dibromo-2,4',5'-三羟基二苯甲酮(LM49),这是一种溴酚类似物,由于其优异的抗炎,抗氧化剂和抗凋亡特性,因此对氧化应激损伤具有很强的保护作用。通过引入取代的哌啶,哌嗪和咪唑以修饰铅化合物LM49的2-位,合成了一系列新颖的含氮杂环溴酚。通过进一步评估它们对EA.hy926细胞中H2O2诱导的损伤的细胞保护活性,发现14种目标溴酚具有中等至强的活性,EC50值在0.9-6.3μM范围内,比槲皮素更强(EC50:18.0μM ),阳性对照化合物。在这些化合物中,最有效的化合物22b是EC50值为0的哌嗪溴酚。9μM相当于LM49。随后进行分子对接研究以推导衍生的卤代酚对Keap1 Kelch域的亲和力和结合方式,对接结果表明,小分子22b通过稳定的氢键和疏水性被Keap1-Kelch和Nrf2的结合区域很好地容纳。相互作用,从而增强了配体与受体之间的亲