1,2,4-Oxadiazole-5-ones as analogues of tamoxifen: synthesis and biological evaluation
作者:Maria A. Chiacchio、Laura Legnani、Agata Campisi、Bottino Paola、Lanza Giuseppe、Daniela Iannazzo、Lucia Veltri、Salvatore Giofrè、Roberto Romeo
DOI:10.1039/c9ob00651f
日期:——
A series of 2,3,4-triaryl-substituted 1,2,4-oxadiazole-5-ones have been prepared as fixed-ring analogues of tamoxifen (TAM), a drug inhibitor of Estradiol Receptor (ER) used in breast cancer therapy, by an efficient synthetic protocol based on a 1,3-dipolar cycloaddition of nitrones to isocyanates. Some of the newly synthesized compounds (14d-f, 14h and 14k) show a significant cytotoxic effect in a
已经制备了一系列2,3,4-三芳基取代的1,2,4-恶二唑-5-酮作为他莫昔芬(TAM)的固定环类似物,他莫昔芬是用于乳腺癌的雌二醇受体(ER)的药物抑制剂通过基于硝酮与异氰酸酯的1,3-偶极环加成反应的高效合成方案进行治疗。一些新合成的化合物(14d-f,14h和14k)在具有50.63至31.82μM的IC50值的人乳腺癌细胞系(MCF-7)中显示出明显的细胞毒性作用。另外,化合物14d-f,14h和14k能够增加p53表达水平,也激活细胞凋亡途径。在ER的晶体结构上进行的新型化合物的分子建模研究表明,与TAM相似,与配体的芳环之间存在强烈的疏水相互作用。这些数据表明1,2,