Synthesis and Antioxidant Activity of Some New Binary Pyrazoles Containing Core Phenothiazine Moiety
作者:Wafaa S. Hamama、Moustafa A. Gouda、Hadwah A. Kamal El-din、Hanafi H. Zoorob
DOI:10.1002/jhet.2716
日期:2017.3
α,β‐Unsaturated ketones containing phenothiazine moiety 4, 5, and 7 were synthesized by condensation of 2‐acetylphenothiazine (1) with different aryl aldehydes 2, 3 and dimethylformamide dimethylaceal. Pyrazoles 11, 18, 20, 22, 23, 24, 25, 26, 28, 29, 31, 32 and oxazole 34 skeletons were also synthesized by 1,3‐dipolar cycloaddition reactions of α,β‐unsaturated ketones with different nucleophilic reagents
α,含有吩噻嗪的部分β不饱和酮4,5,和7是由2- acetylphenothiazine(的缩合合成1)与不同的芳基醛2,3和二甲基甲酰胺dimethylaceal。吡唑11,18,20,22,23,24,25,26,28,29,31,32和恶唑34还可以通过α,β-不饱和酮与不同亲核试剂的1,3-偶极环加成反应合成骨架。甲酰吡唑衍生物36是通过苯hydr 35b的Vilsmeier-Haack反应合成的。筛选新合成的化合物的抗氧化活性。数据清楚地表明,使用ABTS方法,大多数固定在吩噻嗪部分上的化合物均显示出良好的抗氧化活性。此外,化合物11,14,和28显示出抵抗由博来霉素铁络合物引起的DNA损伤高防护。