Synthesis of 2′,3′-Dideoxy-2′-fluoro-3′-(hydroxyimino)-, -3′-(methoxyimino)- and -3′-(hydroxyamino)pyrimidine Nucleosides
作者:Ahmed Khalil、Christophe Mathé、Christian Périgaud
DOI:10.1002/ejoc.201200119
日期:2012.6
New series of 2′,3′-dideoxy-2′-fluoro-3′-(hydroxyimino)-, -3′-(methoxyimino)- and -3′-(hydroxyamino)pyrimidine nucleosides were synthesized. Structural assignments of the former two derivatives, which were obtained as inseparable mixtures of (E) and (Z) isomers, were based upon 1H and 19F NMR spectroscopic analysis. In particular, we observed striking differences in 19F NMR spectra resulting from through-space
合成了新系列的 2',3'-dideoxy-2'-fluoro-3'-(羟基亚氨基)-、-3'-(甲氧基亚氨基)-和-3'-(羟基氨基)嘧啶核苷。作为 (E) 和 (Z) 异构体不可分离的混合物获得的前两种衍生物的结构分配基于 1 H 和 19 F NMR 光谱分析。特别是,我们观察到 19F NMR 光谱的显着差异,这是由具有近邻氮(肟)和氟原子的化合物通过空间 N-F 耦合引起的,其中孤对原子正确定向以重叠。评估了靶核苷的抗病毒和细胞毒活性;然而,它们都没有表现出任何抗病毒活性。只有 2',3'-dideoxy-2'-fluoro-3'-(hydroxyamino)cytidine (19) 对鼠白血病细胞 (L1210) 的增殖显示出中等活性。