2,5,6-trichloro-3-cyano-1-(5-O-acetyl-β-D-ribofuranosyl)indole

2-amino-4-chloro-5-methyl-7-(2-O-methyl-β-D-ribofuranosyl)-7H-pyrrolo[2,3-d]pyrimidine

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

2-amino-4-chloro-7-(2-O-methyl-β-D-ribofuranosyl)-7H-pyrrolo[2,3-d]pyrimidine

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