In this work, a series of seven bis-histamine Schiff bases (H1–H4) and bis-spinaceamine substituted derivatives (SPH1, SPH2, and SPH4) were successfully re-synthesized to evaluate their antioxidant properties by several bioanalytical methods such as DPPH free radical scavenging assay, ABTS radical cation decolorization assay, metal chelating and CUPRAC methods. On the other hand, these compounds were also investigated as inhibitors of acetylcholinesterase (AChE), butyrylcholinesterase (BChE) and DNAcleavage. The results revealed that all compounds showed, in general, moderate DPPH and ABTS radical scavenging activities, and low metal chelating and CUPRAC activities. Specifically, compound SPH4 showed good DPPH radical scavenging activity with IC50 value of 59.59 μM, which is better than the BHA and BHT standard values. The best AChE and BChE inhibition results among the tested series were also obtained for compound SPH4 with % inhibition values of 84.51 and 75.89, respectively. Taken together, compound SPH4 might be an interesting lead compound to discover more potent agents against these enzymes.
在这项工作中,成功地重新合成了一系列七种双
组胺希夫碱(H1–H4)和双菠酰胺取代衍
生物(
SPH1、
SPH2和
SPH4),并通过多种
生物分析方法(例如无
DPPH)评估其抗氧化性能。自由基清除测定法、
ABTS自由基阳离子脱色测定法、
金属螯合法和C
UPRAC方法。另一方面,这些化合物也被研究作为
乙酰胆碱酯酶 (AChE)、丁酰
胆碱酯酶 (BChE) 和 DNA 裂解的
抑制剂。结果表明,所有化合物总体上均表现出中等的
DPPH 和
ABTS 自由基清除活性,以及较低的
金属螯合和 C
UPRAC 活性。具体而言,化合物
SPH4表现出良好的
DPPH自由基清除活性,IC50值为59.59 μM,优于
BHA和
BHT标准值。化合物
SPH4 还获得了测试系列中最好的 AChE 和 BChE 抑制结果,抑制百分比值分别为 84.51 和 75.89。总而言之,化合物
SPH4 可能是一种有趣的先导化合物,可用于发现针对这些酶的更有效的药物。