Synthesis and Antioxidant and Antibacterial Activities of Metal-Based Schiff Bases of Nicotinoyl, Isonicotinoyl and Benzoyl Hydrazides
作者:M. Hussain、Z. Shafiq、A. Hussain、M. Yaqub、S. Arshad、M. Ashraf、B.H. Abbasi、H.B. Ahmad
DOI:10.14233/ajchem.2013.13495
日期:——
A series of 15 metal based [Cu(II), Co(II) and Ni(II)] complexes have been synthesized with novel N-[-(5-hydroxy-2-nitrophenyl)-methylidene]pyridine-4-carbohydrazide (L1), N-[-1-(2,5-dihydroxyphenyl)ethylidene]pyridine-3-carbohydrazide (L2), N-[-1-(5-chloro-2- hydroxphenyl)ethylidene]pyridine-3-carbohydrazide (L3), N-[-1-(5-chloro-2-hydroxyphenyl)ethylidene]pyridine-4-carbohydrazide (L4) and N-[-1-(2,5-dihydroxyphenyl)ethylidene]-3-hydroxybenzohydrazide (L5) Schiff bases and screened for antioxidant and cytotoxic activities. All these complexes exhibited strong antioxidant activity against DPPH radical. Antibacterial activity assay exhibited MIC50 values of these compounds comparable to standard drugs for both Gram-positive and Gram-negative bacteria.
用新型 N-[-(5-羟基-2-硝基苯基)亚甲基]吡啶-4-甲酰肼 (L1)、N-[-1-(2,5-二羟基苯基)亚乙基]吡啶-3-甲酰肼 (L2) 合成了一系列 15 种金属基 [Cu(II)、Co(II) 和 Ni(II)] 复合物、N-[-1-(5-氯-2-羟基苯基)亚乙基]吡啶-3-甲酰肼(L3)、N-[-1-(5-氯-2-羟基苯基)亚乙基]吡啶-4-甲酰肼(L4)和 N-[-1-(2,5-二羟基苯基)亚乙基]-3-羟基苯甲酰肼(L5)席夫碱,并进行了抗氧化和细胞毒性活性筛选。所有这些复合物都对 DPPH 自由基具有很强的抗氧化活性。抗菌活性测定显示,这些化合物对革兰氏阳性菌和革兰氏阴性菌的 MIC50 值与标准药物相当。