4-溴-7H-吡咯并[2,3-d]嘧啶

7-溴-4-甲氧基-5-[(苯基甲氧基)甲基]-5H-吡咯并[3,2-d]嘧啶

7-溴-1,5-二氢-4H-吡咯并[3,2-D]嘧啶-4-酮

4-氯吡咯并[2,3-D]嘧啶

7-溴-4-氯-5H-吡咯并[3,2-D]嘧啶