Synthesis of novel 2-pyrazoline analogues with potent anti-inflammatory effect mediated by inhibition of phospholipase A2: Crystallographic, in silico docking and QSAR analysis
作者:Devirammanahalli Mahadevaswamy Lokeshwari、Dileep Kumar Achutha、Bharath Srinivasan、Naveen Shivalingegowda、Lokanath Neratur Krishnappagowda、Ajay Kumar Kariyappa
DOI:10.1016/j.bmcl.2017.06.063
日期:2017.8
elemental analyses studies and then, were evaluated for their in vitro antimicrobial and anti-inflammatory activities. Amongst the series, 3-(4-chlorophenyl)-5-(2,3-dichlorophenyl)-1-phenyl-4,5-dihydro-1H-pyrazole (5e), 5-(2,3-dichlorophenyl)-3-(4-fluorophenyl)-1-phenyl-4,5-dihydro-1H-pyrazole (5c) and 5-(2,3-dichlorophenyl)-3-(4-methoxyphenyl)-1-phenyl-4,5-dihydro-1H-pyrazole (5h) showed significant
氧化应激诱发炎症性疾病。此外,由耐药菌菌株引起的感染正在上升。这就需要发现用于干预治疗的新型小分子。通过克莱森-施密特反应方法合成了一系列3-(2,3-二氯苯基)-1-(芳基)丙-2-烯-1-酮作为中间体。随后,这些中间体通过与苯肼盐酸盐在甲醇中和几滴乙酸在回流条件下反应,转化为2-吡唑啉。通过光谱,晶体学和元素分析研究对合成的化合物进行表征,然后评估其体外抗微生物和抗炎活性。其中,3-(4-氯苯基)-5-(2,3-二氯苯基)-1-苯基-4,5-二氢-1H-吡唑(5e),5-(2,3-二氯苯基)-3-(4-氟苯基)-1-苯基-4,5-二氢-1 H-吡唑(5c)和5-(2,3-二氯苯基)-3-(4-甲氧基苯基)-1-苯基-4,5-二氢-1 H-吡唑(5h)表现出对磷脂酶A2的显着抑制,IC 50值分别为10.2、11.1和11.9 µM。蛋白质结构建模和对接研究表明,这些化合物显示出与酶上高