Free radicals are produced by an important chemical process known as oxidation that in turn initiates chain reactions to damage the cells and originate oxidative stress. Flavones have got special position in research field of natural and synthetic organic chemistry due to their biological capabilities as antioxidant. The antioxidants are known to possess extensive biological effects that include antiviral, antibacterial, anti-inflammatory, antithrombotic, and vasodilatory activities. The simple flavone (F1) and substituted flavone derivatives (F2–F5) have been synthesized fromo-hydroxyacetophenone and benzaldehyde derivatives in good yield. The structures have been established by different spectroscopic techniques like1H NMR,13C NMR, IR, and elemental analysis. Antioxidant profile of these compounds was established using DPPH and H2O2free radical scavenging assay. The findings showed that halogenated flavones showed more enzyme inhibitions and antioxidant activities than simple flavones and are potential candidates for the treatment of wide range of diseases.
自由基是通过一种重要的
化学过程氧化产生的,这进而引发链式反应来损伤细胞并产生氧化应激。由于它们作为
抗氧化剂的
生物学能力,
黄酮类化合物在天然和合成有机
化学研究领域中占据着特殊的地位。
抗氧化剂被认为具有广泛的
生物效应,包括抗病毒、抗菌、抗炎、抗血栓和扩血管活性。简单的
黄酮类化合物(F1)和取代的黄
酮类衍
生物(F2-F5)已经从邻羟基
苯乙酮和
苯甲醛衍
生物中以良好的产率合成。这些化合物的结构已通过不同的光谱技术(如1H NMR、13C NMR、IR和元素分析)确定。使用
DPPH和
H2O2自由基清除实验建立了这些化合物的抗氧化剖面。研究结果表明,卤代
黄酮类化合物显示出比简单
黄酮类化合物更多的酶抑制和抗氧化活性,是治疗各种疾病的潜在候选药物。