6-Amino-1-(2-deoxy-β-D-erythro-pentofuranosyl)-1,5-dihydro-4H-pyr azolo[3,4-d]pyrimidin-4-one

5-(2-chloroethyl)-1-[4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]pyrimidine-2,4-dione

4-amino-5-(2-chloroethyl)-1-[(2R,4S,5R)-4-hydroxy-5-(hydroxymethyl)oxolan-2-yl]pyrimidin-2-one

2'-脱氧-5-(2-羟基乙基)-3',5'-二-O-(4-甲基苯甲酰)尿苷

1-(2-deoxy-3,5-di-O-p-toluoyl-α-D-erythro-pentofuranosyl)-5-(2-hydroxyethyl)-1H,3H-pyrimidine-2,4-dione