2,3,5-三苯甲酰尿苷

1,3,5-tri-O-benzoyl-2-O-(2-imidazolylsulfonyl)-α-L-ribofuranose

1-(3,5-di-O-benzoyl-2-deoxy-2-fluoro-β-L-arabinofuranosyl)-5-bromocytosine

1-(β-L-ribofuranosyl)-5-azacytosine

1-((2S,3R,4S,5S)-5-(((tert-butyldimethylsilyl)oxy)methyl)-3-fluoro-4-hydroxytetrahydrofuran-2-yl)pyrimidine-2,4(1H,3H)-dione