5-氟嘧啶-2-酮 beta-呋喃核糖苷

9-[3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]purine-6-carboxamide

2'-脱氧-5-(羟甲基)胞啶

5-(cyanomethyl)-2-[3,4-dihydroxy-5-(hydroxymethyl)oxolan-2-yl]triazole-4-carboxamide

6-氨基-1-[3,4-二羟基-5-(羟基甲基)四氢呋喃-2-基]-2H-三唑并[4,5-c]吡啶-4-酮