4-chloro-7-[5-O-[(1,1-dimethylethyl)dimethylsilyl]-2,3-O-(1-methylethylidene)-α-D-ribofuranosyl]-7H-pyrrolo[2,3-d]pyrimidine

4-氯-7H-吡咯并[2,3-d]嘧啶-5-甲酸乙酯

4,5-二氯-7H-吡咯并[2,3-D]嘧啶

5-溴-4-氯-7-甲基-7h-吡咯并[2,3-d]嘧啶

4-氯-7-(2,3,5-三-O-乙酰基-beta-D-呋喃核糖基)-7H-吡咯并[2,3-d]嘧啶