2-Cyanoethyl hydrogen N-acetyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-[bis(1-methylethyl)amino]-P-deoxo-P-deoxy-2′-O-[(1,1-dimethylethyl)dimethylsilyl]cytidylyl-(3′→5′)-2′-O-acetyl-3′-de(phosphinicooxy)uridylyl-1H-1,2,3-triazole-1,4-diyl-(3′→5′)-5′-deoxy-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-3′..

2-Cyanoethyl hydrogen N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-P-[bis(1-methylethyl)amino]-P-deoxo-P-deoxy-2′-O-[(1,1-dimethylethyl)dimethylsilyl]cytidylyl-(3′→5′)-2′-O-acetyl-3′-de(phosphinicooxy)uridylyl-1H-1,2,3-triazole-1,4-diyl-(3′→5′)-5′-deoxy-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-3..

2-Cyanoethyl hydrogen N-benzoyl-P-(2-cyanoethyl)-2′-O-[(1,1-dimethylethyl)dimethylsilyl]adenylyl-(3′→5′)-2′-O-acetyl-3′-de(phosphinicooxy)uridylyl-1H-1,2,3-triazole-1,4-diyl-(3′→5′)-5′-deoxy-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-3′-uridylate

2-Cyanoethyl hydrogen N-benzoyl-P-(2-cyanoethyl)-2′-O-[(1,1-dimethylethyl)dimethylsilyl]cytidylyl-(3′→5′)-2′-O-acetyl-3′-de(phosphinicooxy)uridylyl-1H-1,2,3-triazole-1,4-diyl-(3′→5′)-5′-deoxy-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-3′-uridylate

2-Cyanoethyl hydrogen 2′-O-[(1,1-dimethylethyl)dimethylsilyl]-P-(2-cyanoethyl)uridylyl-(3′→5′)-2′-O-acetyl-3′-de(phosphinicooxy)uridylyl-1H-1,2,3-triazole-1,4-diyl-(3′→5′)-5′-deoxy-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-3′-uridylate

2-Cyanoethyl hydrogen 2′-O-acetyl-N-benzoyl-3′-de(phosphinicooxy)cytidylyl-1H-1,2,3-triazole-1,4-diyl-(3′→5′)-5′-deoxy-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-3′-uridylate

2-Cyanoethyl hydrogen 2′-O-acetyl-3′-de(phosphinicooxy)uridylyl-1H-1,2,3-triazole-1,4-diyl-(3′→5′)-5′-deoxy-2′-O-[(1,1-dimethylethyl)dimethylsilyl]-3′-uridylate

2′-O-Acetyl-N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)cytidylyl-1H-1,2,3-triazole-1,4-diyl-(3′→5′)-N-benzoyl-5′-deoxy-2′-O-[(1,1-dimethylethyl)dimethylsilyl]cytidine

2′-O-Acetyl-N-benzoyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)cytidylyl-1H-1,2,3-triazole-1,4-diyl-(3′→5′)-5′-deoxy-2′-O-[(1,1-dimethylethyl)dimethylsilyl]uridine

2′-O-Acetyl-5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-de(phosphinicooxy)uridylyl-1H-1,2,3-triazole-1,4-diyl-(3′→5′)-5′-deoxy-2′-O-[(1,1-dimethylethyl)dimethylsilyl]uridine

N-[6,9-Dihydro-6-oxo-9-[5,6,7-trideoxy-2-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-ribo-hept-6-ynofuranosyl]-1H-purin-2-yl]-2-methylpropanamide

N-[6,9-Dihydro-6-oxo-9-[5,6,7-trideoxy-2-O-[(1,1-dimethylethyl)dimethylsilyl]-3-O-(phenylmethyl)-β-D-ribo-hept-6-ynofuranosyl]-1H-purin-2-yl]-2-methylpropanamide

2-Methyl-N-[9-[5,6,7-trideoxy-3-O-(phenylmethyl)-2-O-(trimethylsilyl)-β-D-ribo-hept-6-ynofuranosyl]-6-[(trimethylsilyl)oxy]-9H-purin-2-yl]-N-(trimethylsilyl)propanamide

9-[5,6,7-Trideoxy-3-O-(phenylmethyl)-2-O-(trimethylsilyl)-β-D-ribo-hept-6-ynofuranosyl]-N-(trimethylsilyl)-6-[(trimethylsilyl)oxy]-9H-purin-2-amine

2-Amino-1,9-dihydro-9-[5,6,7-trideoxy-3-O-(phenylmethyl)-β-D-ribo-hept-6-ynofuranosyl]-6H-purin-6-one

2-(Acetylamino)-9-[2-O-acetyl-5,6,7-trideoxy-3-O-(phenylmethyl)-β-D-ribo-hept-6-ynofuranosyl]-9H-purin-6-yl N,N-diphenylcarbamate

N-[6,9-Dihydro-6-oxo-9-[5,6,7-trideoxy-3-O-(phenylmethyl)-β-D-ribo-hept-6-ynofuranosyl]-1H-purin-2-yl]-2-methylpropanamide