9-[(6R)-1,2-Dideoxy-4,5-O-(1-methylethylidene)-1-[[(2-nitrophenyl)sulfonyl]amino]-L-ribo-hexofuranosyl]-9H-purin-6-amine

5′-[[[4-Amino-1,2-dihydro-1-(methoxymethyl)-2-oxo-5-pyrimidinyl]methyl][(3S)-3-amino-4-hydroxy-4-oxobutyl]amino]-5′-deoxyadenosine

5′-[[[4-Amino-1,2-dihydro-1-(methoxymethyl)-2-oxo-5-pyrimidinyl]methyl][(3S)-4-(1,1-dimethylethoxy)-3-[[(1,1-dimethylethoxy)carbonyl]amino]-4-oxobutyl]amino]-5′-deoxy-2′,′3-O-(1-methylethylidene)adenosine

N-Benzoyl-5-deoxy-5-[[(3S)-4-(1,1-dimethylethoxy)-3-[[(1,1-dimethylethoxy)carbonyl]amino]-4-oxobutyl]amino]-3,4-O-(1-methylethylidene)adenosine

5′-[[[4-Amino-1,2-dihydro-1-(methoxymethyl)-2-oxo-5-pyrimidinyl]methyl]amino]-5′-deoxyadenosine

5′-[[[4-(Benzoylamino)-1,2-dihydro-1-(methoxymethyl)-2-oxo-5-pyrimidinyl]methyl]amino]-5′-deoxy-2′,3′-O-(1-methylethylidene)adenosine

5′-[[[4-Amino-1,2-dihydro-1-(methoxymethyl)-2-oxo-5-pyrimidinyl]methyl]amino]-5′-deoxy-2′,3′-O-(1-methylethylidene)adenosine

5′-Deoxy-2′,3′-O-(1-methylethylidene)-5′-[[(2-nitrophenyl)sulfonyl]amino]adenosine

4-Amino-1-[(2S,5S)-5-(chloromethyl)tetrahydro-2-furanyl]-2(1H)-pyrimidinone

(2R,3S,3aR,9aR)-2,3,3a,9a-Tetrahydro-3-hydroxy-6-imino-6H-furo[2′,3′:4,5]oxazolo[3,2-a]pyrimidine-2-methanol

4-Amino-1-[(2S,5R)-5-(chloromethyl)tetrahydro-2-furanyl]-2(1H)-pyrimidinone

1-[(5E)-5,6-Dideoxy-6-(diethoxyphosphinothioyl)-3-O-[(1,1-dimethylethyl)dimethylsilyl]-2-O-methyl-β-D-ribo-hex-5-enofuranosyl]-2,4(1H,3H)-pyrimidinedione