2-amino-7-[2-[2-(2-amino-6-oxo-3H-purin-7-yl)ethylamino]ethyl]-3H-purin-6-one

(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',3'-二去氢-2',3'-二脱氧鸟苷

3,5-dihydroimidazo[2,1-b]purin-4-one