Abstract

We report the synthesis and cytotoxicity in MCF-7 and MDA-MB-231 breast cancer cells of novel 1,2,3- and 1,2,4-triazolyl analogs of ribavirin. We modified ribavirin’s carboxamide moiety to test the effects of lipophilic groups. 1-β-D-Ribofuranosyl-1H-1,2,3-triazoles were prepared using Click Chemistry, whereas an unprecedented application of a prior 1,2,4-triazole ring synthesis was used for 1-β-D-ribofuranosyl-1H-1,2,4-triazole analogs. Though cytotoxicity was mediocre and there was no correlation with lipophilicity, we discovered that a structurally similar concentrative nucleoside transporter 2 (CNT2) inhibitor was modestly cytotoxic (MCF-7 IC₅₀ of 42 µM). These syntheses could be used to efficiently investigate variation in the nucleobase.

摘要

我们报告了利巴韦林的新型 1,2,3- 和 1,2,4-三唑基类似物在 MCF-7 和 MDA-MB-231 乳腺癌细胞中的合成和细胞毒性。我们修改了利巴韦林的羧酰胺部分以测试亲脂性基团的影响。1-β-D-呋喃核糖基-1 H -1,2,3-三唑是使用 Click Chemistry 制备的，而 1-β-D-呋喃核糖基使用了先前 1,2,4-三唑环合成的前所未有的应用-1 H -1,2,4-三唑类似物。尽管细胞毒性一般且与亲脂性无关，但我们发现结构相似的浓缩核苷转运蛋白 2 (CNT2) 抑制剂具有适度的细胞毒性（MCF-7 IC 50 为 42 _µM）。这些合成可用于有效研究核碱基的变异。