2-amino-5-iodo-7-(β-D-ribofuranosyl)-3,7-dihydro-4H-pyrrolo[2,3-d]pyrimidin-4-one

2-amino-3,7-dihydro-7-(β-D-ribofuranosyl)-5-[(trimethylsilyl)ethynyl]-4H-pyrrolo[2,3-d]pyrimidin-4-one

7-(β-D-ribofuranosyl)-5-[(trimethylsilyl)ethynyl]-7H-pyrrolo[2,3-d]pyrimidine-2,4-diamine

2-amino-5-iodo-4-methoxy-7-(β-D-ribofuranosyl)-7H-pyrrolo[2,3-d]pyrimidine

1,7-dihydro-5-iodo-4-methoxy-7-(β-D-ribofuranosyl)-2H-pyrrolo[2,3-d]pyrimidin-2-one