(2R,3S,5R)-5-(7-aminotriazolo[4,5-d]pyrimidin-3-yl)-2-(hydroxymethyl)oxolan-3-ol

5-amino-3-[4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]-2H-triazolo[4,5-d]pyrimidin-7-one

2-(trityloxymethyl)furan

3,5-O-二甲苯甲酰6-氯嘌呤-7-beta-D-脱氧核糖甙

2,5-脱水-3-去氧-D-阿拉伯糖型-己糖酸二苯甲酸酯