Antioxidant properties of phenolic Schiff bases: structure–activity relationship and mechanism of action
作者:El Hassane Anouar、Salwa Raweh、Imene Bayach、Muhammad Taha、Mohd Syukri Baharudin、Florent Di Meo、Mizaton Hazizul Hasan、Aishah Adam、Nor Hadiani Ismail、Jean-Frédéric F. Weber、Patrick Trouillas
DOI:10.1007/s10822-013-9692-0
日期:2013.11
Phenolic Schiff bases are known for their diverse biological activities and ability to scavenge free radicals. To elucidate (1) the structure-antioxidant activity relationship of a series of thirty synthetic derivatives of 2-methoxybezohydrazide phenolic Schiff bases and (2) to determine the major mechanism involved in free radical scavenging, we used density functional theory calculations (B3P86/6-31+(d
酚类席夫碱以其多样的生物活性和清除自由基的能力而闻名。为了阐明 (1) 2-甲氧基苯甲酰肼酚类席夫碱的 30 种合成衍生物的结构-抗氧化活性关系和 (2) 确定参与自由基清除的主要机制,我们使用密度泛函理论计算 (B3P86/6 -31+(d,p)) 在可极化连续介质模型中。结果表明,与第一次和第二次 (BDEd) 氢原子转移(内在参数)相关的键解离焓 (BDE) 对合理化抗氧化活性的重要性。除了 OH 基团的数量外,溴取代基的存在在调节抗氧化活性方面也起着重要的作用。