O6-benzyl-3',5'-bis-O-(tert-butyldimethylsilyl)-O2-(4-methylphenylsulfonyl)-2'-deoxyxanthosine

6-N-(2-(5'-O-3'-O-bis(tert-butyldimethylsilyl)-6-O-benzyl-2'-deoxyinosyl))-5'-O-3'-O-bis(tert-butyldimethylsilyl)-2'-deoxyadenosine

(2R,2'R,3S,3'S,5R,5'R)-5,5'-(azanediylbis(6-(benzyloxy)-9H-purine-2,9-diyl))bis(2-((bis(4-methoxyphenyl)(phenyl)methoxy)methyl)tetrahydrofuran-3-ol)

(2R,3S,5R)-5-(6-(benzyloxy)-2-((9-((2R,4S,5R)-4-hydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-9H-purin-6-yl)amino)-9H-purin-9-yl)-2-(hydroxymethyl)tetrahydrofuran-3-ol

2-N-(2-(5'-O-3'-O-bis(tert-butyldimethylsilyl)-6-O-benzyl-2'-deoxyinosyl))-5'-O-3'-O-bis(tert-butyldimethylsilyl)-6-O-benzyl-2'-deoxyguanosine