Synthesis, Characterization and Antimicrobial Evaluation of Novel (E)-N'-(4-(1-((3,4-Dimethoxypyridin-2-Yl)Methyl)-1H-1,2,3-Triazol-4-Yl)Benzylidene)Benzohydrazide Derivatives
作者:Swamy Saidugari、Lakshmana Vadali、Vidya K、Ram B
DOI:10.13005/ojc/320445
日期:2016.8.25
The synthesis of novel 1,2,3-triazole-hydrazone derivatives embedded with 3,4-dimethoxy pyridine ring nucleus is described. These derivatives were prepared utilizing, 2-(chloromethyl)-3,4-dimethoxypyridine 1, 4-ethynylbenzaldehye 5 and various benzohydrazides7a-7j. The structures of the newly synthesized 1,2,3-triazole-hydrazones 8a-j was established on the basis of the spectroscopic techniques like 1H NMR, mass and IR data. They were evaluated against a panel of bacterial and fungal pathogens such as Staphylococcus. pyogens, Staphylococcus. aureus (Gram positive bacteria), Escherichia.coli, Pseudomonas. aeruginosa(Gram negative bacteria) and Aspergillus niger and candida albicans(Fungal stains).Compounds 8b, 8c, 8d, 8e and 8f with R = 4-OH, 4-OMe, 4-SO2Me, 3,4,5,-OMe and 3-NO2 respectively showed moderate antibacterial activity while compounds 8b, 8d, 8i and 8j with R = 4-OH, 4-SO2Me, 3,5-dichloro and 2,5-difluoro substitution exhibited very good fungal activity
描述了一种新型1,2,3-
噁唑-
肼烯衍
生物的合成,该衍
生物嵌入了
3,4-二甲氧基吡啶环核。这些衍
生物是利用2-(
氯甲基)-
3,4-二甲氧基吡啶1、
4-乙炔基苯甲醛5和多种苯
肼酮7a-7j制备的。新合成的1,2,3-
噁唑-
肼烯8a-j的结构是基于核磁共振(1H NMR)、质谱和红外光谱数据确立的。它们在一组细菌和真菌病原体上进行了评估,如化脓性链球菌、
金黄色葡萄球菌(革兰氏阳性细菌)、大肠杆菌、
铜绿假单胞菌(革兰氏阴性细菌)以及黑霉和白色念珠菌(真菌菌株)。化合物8b、8c、8d、8e和8f,分别具有R = 4-OH、4-OMe、4-SO2Me、3,4,5-O-和3-
NO2,显示出中等抗菌活性,而化合物8b、8d、8i和8j,具有R = 4-OH、4-SO2Me、3,5-二
氯和2,5-二
氟取代,表现出良好的抗真菌活性。