Synthesis and Anticancer Evaluation of 1,3,4-Oxadiazoles, 1,3,4-Thiadiazoles, 1,2,4-Triazoles and Mannich Bases
作者:Nadia Youssef Megally Abdo、Mona Monir Kamel
DOI:10.1248/cpb.c15-00059
日期:——
A series of 5-(pyridin-4-yl)-N-substituted-1,3,4-oxadiazol-2-amines (3a-d), 5-(pyridin-4-yl)-N-substituted-1,3,4-thiadiazol-2-amines (4a-d) and 5-(pyridin-4-yl)-4-substituted-1,2,4-triazole-3-thiones (5a-d) were obtained by the cyclization of hydrazinecarbothioamide derivatives 2a-d derived from isonicotinic acid hydrazide. Aminoalkylation of compounds 5a-d with formaldehyde and various secondary amines
一系列5-(吡啶-4-基)-N-取代的1,3,4-恶二唑-2-胺(3a-d),5-(吡啶-4-基)-N-取代的1,通过环化获得3,4-噻二唑-2-胺(4a-d)和5-(吡啶-4-基)-4-取代的1,2,4-三唑-3-硫酮(5a-d)异烟酸酰肼衍生的肼基碳硫代酰胺衍生物2a-d。用甲醛和各种仲胺将化合物5a-d进行氨基烷基化,得到曼尼希碱6a-p。根据它们的光谱数据和元素分析确定了新合成化合物的结构。筛选所有化合物针对六种人类癌细胞系和正常成纤维细胞的体外抗癌活性。测试的化合物中有十六种对大多数细胞系表现出明显的细胞毒性。在这些衍生物中,曼尼希(Mannich)碱基6j 发现6m和6p表现出最有效的活性。与标准CHS 828(IC50 = 0.025 microM)相比,Mannich base 6m对胃癌NUGC(IC50 = 0.021 microM)表现出更强的细胞毒活性。正常成纤维细