Synthesis, antibacterial and antioxidant activities of new 1-alkyl-4-(1-alkyl-4-oxo-1,4-dihydroquinolin-2-yl)pyridinium bromides
作者:Nuran Kahriman、Büşra Yaylı、Ayça Aktaş、Zeynep İskefiyeli、Fatih Şaban Beriş、Nurettin Yaylı
DOI:10.1016/j.ejmech.2013.08.050
日期:2013.11
0 μg/mL). They also showed good antioxidant activities in DPPH scavenging (SC50: 45–133 μg/mL) and ferric reducing/antioxidant power (14–141 μM TEAC) tests. The biological activities decreased as alkyl chain length increased. The reason behind the obvious negative effect of alkyl chain elongation is unclear and requires investigations about the intermolecular interactions of these pyridinium salts with
由1,4'-二氮杂黄酮[2-吡啶-4-基喹啉]合成了新的1-烷基-4-(1-烷基-4-氧代-1,4-二氢喹啉-2-基)溴化吡啶鎓(3a – k)。 -4(1 H)-one]并评估其抗菌和抗氧化活性。使用无溶剂微波加热,通过分子内迈克尔加成,由2'-氨基取代的查尔酮(1)快速制备一锅1,4'-二氮杂黄酮(2)。由化合物2与相应的烷基卤化物合成新的N,N'-二烷基取代的(C 5 -C 15)1,4'-二氮杂黄酮溴化物。化合物3a – k对六种细菌具有活性(MIC:7.8–500.0μg/ mL)。他们还在清除DPPH (SC 50:45–133μg/ mL)和还原铁/抗氧化能力(14–141μMTEAC)中显示出良好的抗氧化活性。随着烷基链长度的增加,生物活性降低。烷基链延长产生明显负面影响的原因尚不清楚,需要对这些吡啶鎓盐与生物测定成分的分子间相互作用进行研究。