Abstract
A series of novel substituted 6′-(4-chlorophenyl)-3,4′-bipyridine-3′-carbonitriles with incorporated pyrazole and/or triazole moieties have been synthesized using 2-(6′-(4-chlorophenyl)-3′-cyano-3,4′-bipyridin-2′-yloxy)acetohydrazide (3) as starting material. Also, the key intermediate 3 reacted with aromatic aldehydes and tosyl chloride to give the corresponding Schiff bases and tosyl hydrazide derivatives, respectively. The antimicrobial of these newly synthesized compounds was evaluated against Bacillus subtilis as Gram-positive bacteria and Trichoderma viride as a fungus; some of these compounds such as 5, 6, 7, 8, 10, 12, and 14 showed excellent activities as antimicrobial agents. Moreover, the cytotoxic activity of the most active compounds was assessed in vitro against human tumor liver cancer cell line (HEPG2); compounds 8, 10, 13a, and 14 showed potent activities relative to Doxorubicin which was used as a reference standard drug in this study.
标题:摘要
一系列新颖的取代6′-(4-氯苯基)-3,4′-联吡啶-3′-腈,含有吡唑和/或三唑基团,已通过使用2-(6′-(4-氯苯基)-3′-氰基-3,4′-联吡啶-2′-氧基)乙酰肼(3)作为起始材料合成。此外,关键中间体3与芳香醛和甲苯磺酰氯反应,分别得到相应的席夫碱和甲苯磺酰肼衍生物。这些新合成的化合物的抗微生物活性针对革兰氏阳性细菌枯草芽孢杆菌和真菌木霉菌进行了评估;其中一些化合物,如5、6、7、8、10、12和14,显示出优异的抗微生物活性。此外,对活性最强的化合物进行了体外细胞毒性活性评估,针对人肝肿瘤细胞系(HEPG2);化合物8、10、13a和14相对于在本研究中用作参考标准药物的多柔比星显示出强大的活性。