2-amino-6-chloro-9-(2,3,5-tri-O-acetyl-β-D-ribofuranosyl)purine
6-chloro-2-iodo-9-(2',3',5'-tri-O-acetyl-β-D-ribofuranosyl)-9H-purine
2-iodo-6-methoxy-9-(β-D-ribofuranosyl)purine
2-vinyl-2',3',5'-tri-O-(tert-butyldimethylsilyl)inosine
9-[(2R,3R,4R,5R)-3,4-Bis-(tert-butyl-dimethyl-silanyloxy)-5-(tert-butyl-dimethyl-silanyloxymethyl)-tetrahydro-furan-2-yl]-6-methoxy-2-vinyl-9H-purine