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Design, synthesis, molecular modelling and biological evaluation of novel 3-(2-naphthyl)-1-phenyl-1H-pyrazole derivatives as potent antioxidants and 15-Lipoxygenase inhibitors.
Journal of Enzyme inhibition and Medicinal Chemistry ( IF 5.6 ) Pub Date : 2020-03-27 , DOI: 10.1080/14756366.2020.1742116
Sahar A Ali 1 , Samir Mohamed Awad 2, 3 , Ahmed Mohammed Said 2, 4 , Shahenda Mahgoub 1 , Heba Taha 1 , Naglaa Mohamed Ahmed 2
Affiliation  

Oxidative stress is one of the main causes of significant severe diseases. The discovery of new potent antioxidants with high efficiency and low toxicity is a great demand in the field of medicinal chemistry. Herein, we report the design, synthesis molecular modelling and biological evaluation of novel hybrids containing pyrazole, naphthalene and pyrazoline/isoxazoline moiety. Chalcones 2a-e were synthesized efficiently and were used as starting materials for synthesis of a variety of heterocycles. A novel series of pyrazoline 3a-e, phenylpyrazoline 4a-e, isoxazoline 5a-e and pyrazoline carbothioamide derivatives 6a-e were synthesized and screened for in vitro antioxidant activity using 2,2-diphenyl-1-picrylhydrazyl (DPPH), nitric oxide (NO) and superoxide radical scavenging assay as well as 15-lipoxygenase (15-LOX) inhibition activity. Compounds 3a, 4e, 5b, 5c, 6a, 6c, and 6e showed excellent radical scavenging activity in all three methods in comparison with ascorbic acid and 15-LOX inhibition potency using quercetin as standard then were subjected to in vivo study. Catalase (CAT) activity, glutathione (GSH) and malondialdehyde (MDA) levels were assayed in liver of treated rats. Compounds 5b, 5c, and 6e showed significant in vivo antioxidant potentials compared to control group at dose of 100 mg/kg B.W. Molecular docking of compound 6a endorsed its proper binding at the active site pocket of the human 15-LOX which explains its potent antioxidant activity in comparison with standard ascorbic acid.

中文翻译:

新型3-(2-萘基)-1-苯基-1H-吡唑衍生物作为有效的抗氧化剂和15-脂氧合酶抑制剂的设计,合成,分子建模和生物学评估。

氧化应激是严重的严重疾病的主要原因之一。新型高效,低毒的抗氧化剂的发现是药物化学领域的巨大需求。在此,我们报告了含有吡唑,萘和吡唑啉/异恶唑啉部分的新型杂种的设计,合成分子建模和生物学评估。Chalcones 2a-e有效合成,并用作合成各种杂环的原料。合成了一系列新颖的吡唑啉3a-e,苯基吡唑啉4a-e,异恶唑啉5a-e和吡唑啉碳硫酰胺衍生物6a-e,并使用2,2-二苯基-1-吡啶并肼(DPPH),一氧化氮筛选了其体外抗氧化活性(NO)和超氧化物自由基清除试验以及15-脂氧合酶(15-LOX)抑制活性。与抗坏血酸和以槲皮素为标准品的15-LOX抑制能力相比,化合物3a,4e,​​5b,5c,6a,6c和6e在所有三种方法中均表现出优异的自由基清除活性,然后进行了体内研究。在治疗的大鼠肝脏中测定过氧化氢酶(CAT)活性,谷胱甘肽(GSH)和丙二醛(MDA)水平。与对照组相比,化合物5b,5c和6e在剂量为100 mg / kg BW时显示出显着的体内抗氧化剂潜力。化合物6a的分子对接证实了其在人15-LOX活性位点口袋上的正确结合,这说明了其有效的抗氧化剂活性与标准抗坏血酸相比。与抗坏血酸和以槲皮素为标准的15-LOX抑制能力相比,这两种方法均具有优异的自由基清除活性,然后进行了体内研究。在治疗的大鼠肝脏中测定过氧化氢酶(CAT)活性,谷胱甘肽(GSH)和丙二醛(MDA)水平。与对照组相比,化合物5b,5c和6e在剂量为100 mg / kg BW时显示出显着的体内抗氧化剂潜力。化合物6a的分子对接证明了其在人15-LOX活性位点口袋中的正确结合,这说明了其有效的抗氧化剂活性与标准抗坏血酸相比。与抗坏血酸和以槲皮素为标准的15-LOX抑制能力相比,这两种方法均具有优异的自由基清除活性,然后进行了体内研究。在治疗的大鼠肝脏中测定过氧化氢酶(CAT)活性,谷胱甘肽(GSH)和丙二醛(MDA)水平。与对照组相比,化合物5b,5c和6e在剂量为100 mg / kg BW时显示出显着的体内抗氧化剂潜力。化合物6a的分子对接证明了其在人15-LOX活性位点口袋中的正确结合,这说明了其有效的抗氧化剂活性与标准抗坏血酸相比。
更新日期:2020-04-20
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