7-(β-D-ribofuranosyl)imidazo<1,2-c>pyrazolo<4,3-e>pyrimidine

2-[(5,6-dimethylpyrido[4,3-b]carbazol-11-yl)methoxy]-5-(hydroxymethyl)oxolane-3,4-diol

[5-[(2-氨基乙酰基)氨基]-3,4-二羟基-四氢呋喃-2-基]甲氧基膦酸

2-(4-aminoimidazo[4,5-d]pyridazin-3-yl)-5-(hydroxymethyl)oxolane-3,4-diol

3-beta-呋喃核糖基噻吩并[2,3-d]嘧啶-4-酮