[9-((2R,3R,4S,5R)-3,4-Dihydroxy-5-hydroxymethyl-tetrahydro-furan-2-yl)-6-oxo-6,9-dihydro-1H-purin-2-ylmethyl]-phosphonic acid (3aR,4R,6R,6aR)-6-(6-amino-purin-9-yl)-2,2-dimethyl-tetrahydro-furo[3,4-d][1,3]dioxol-4-ylmethyl ester methyl ester

5-iodo-1-[2',3',5'-O-tris(tert-butyldimethylsilyl)-β-D-ribofuranosyl]imidazole-4-carbonitrile

2-Benzyloxymethyl-9-[(2R,3R,4R,5R)-3,4-bis-(tert-butyl-dimethyl-silanyloxy)-5-(tert-butyl-dimethyl-silanyloxymethyl)-tetrahydro-furan-2-yl]-1,9-dihydro-purin-6-one

2-Benzyloxymethyl-9-[(2R,3R,4R,5R)-3,4-bis-(tert-butyl-dimethyl-silanyloxy)-5-(tert-butyl-dimethyl-silanyloxymethyl)-tetrahydro-furan-2-yl]-6-(2-trimethylsilanyl-ethoxy)-9H-purine