9-[(E)-5,6,7-trideoxy-7-[({2,2-diphenyl-6-[(pyridine-4-yl)carbonyl]-1,3-benzodioxol-4-yl}carbonyl)amino]-2,3-O-(1-methylethylidene)-β-D-ribo-hept-5-enofuranosyl]-9H-purin-6-amine

9-{(E)-7-[({2,2-bis(4-methoxyphenyl)-6-[(4-methylphenyl)sulfonyl]-1,3-benzodioxol-4-yl}carbonyl)amino]-5,6,7-trideoxy-2,3-O-(1-methylethylidene)-β-D-ribo-hept-5-enofuranosyl}-9H-purin-6-amine

9-[(E)-5,6,7-trideoxy-7-({[2,2-diphenyl-6-(pyridine-4-yl)-1,3-benzodioxol-4-yl]carbonyl}amino)-2,3-O-(1-methylethylidene)-β-D-ribo-hept-5-enofuranosyl]-9H-purin-6-amine

9-[(E)-7-({[6-(cyclohexylcarbonyl)-2,2-diphenyl-1,3-benzodioxol-4-yl]carbonyl}amino)-5,6,7-trideoxy-2,3-O-(1-methylethylidene)-β-D-ribo-hept-5-enofuranosyl]-9H-purin-6-amine