An example of a 2′-C-methyl branched nucleoside analogue bearing 3,4-dihydro-3-oxopyrazine-2-carboxamide as the base, namely 4-(2-C-methyl-β-D-ribofuranosyl)-3-oxo-3,4-dihydropyrazine-2-carboxamide, is reported. This compound was synthesized following a Vorbrüggen’s glycosylation procedure in a few steps. When evaluated in cell culture experiments against a broad range of viruses, this compound did not exhibit any significant antiviral effect or cytotoxicity.
报道了一种带有3,4-二氢-3-氧代吡嗪-2-羧酰胺作为碱基的2'-C-甲基支链核苷类似物的示例,即4-(2-C-甲基-β-D-核糖呋喃苷基)-3-氧代-3,4-二氢吡嗪-2-羧酰胺。该化合物通过Vorbrüggen的糖基化程序在几个步骤中合成。在广泛的病毒细胞培养实验中评估时,该化合物没有表现出任何显著的抗病毒效果或细胞毒性。