1-(4-Chloro-7H-pyrrolo[2,3-d]pyrimidin-7-yl)-1,5-dideoxy-2,3-O-(1-methylethylidene)-β-D-ribo-hexofuranurononitrile

4-Chloro-7-[5,6-dideoxy-2,3-O-(1-methylethylidene)-β-D-ribo-hex-5-ynofuranosyl]-7H-pyrrolo[2,3-d]pyrimidine

7-[5,6-Dideoxy-2,3-O-(1-methylethylidene)-β-D-ribo-hex-5-enofuranosyl]-N-methyl-7H-pyrrolo[2,3-d]pyrimidin-4-amine

1,3-Bis(1,1-dimethylethyl) 2-[7-[5,6-dideoxy-2,3-O-(1-methylethylidene)-β-D-ribo-hex-5-enofuranosyl]-7H-pyrrolo[2,3-d]pyrimidin-4-yl]imidodicarbonate

4-Chloro-7-[5,6-dideoxy-2,3-O-(1-methylethylidene)-β-D-ribo-hex-5-enofuranosyl]-7H-pyrrolo[2,3-d]pyrimidine

4-Chloro-7-[(5ξ)-6-deoxy-2,3-O-(1-methylethylidene)-β-D-ribo-hexofuranosyl]-7H-pyrrolo[2,3-d]pyrimidine

4-Chloro-7-[5-deoxy-2,3-O-(1-methylethylidene)-5-oxo-β-D-ribofuranosyl]-2-methyl-7H-pyrrolo[2,3-d]pyrimidine

1,3-Bis(1,1-dimethylethyl) 2-[6-iodo-7-[2,3-O-(1-methylethylidene)-5-O-[(4-methylphenyl)sulfonyl]-β-D-ribofuranosyl]-7H-pyrrolo[2,3-d]pyrimidin-4-yl]imidodicarbonate

1,3-Bis(1,1-dimethylethyl) 2-[7-[(3aR,4R,6R,6aR)-tetrahydro-2,2-dimethyl-6-[[[(4-methylphenyl)sulfonyl]oxy]methyl]-4H-cyclopenta-1,3-dioxol-4-yl]-7H-pyrrolo[2,3-d]pyrimidin-4-yl]imidodicarbonate

N,N-Dimethyl-N′-[2-methyl-7-[2,3-O-(1-methylethylidene)-5-O-[(4-methylphenyl)sulfonyl]-β-D-ribofuranosyl]-7H-pyrrolo[2,3-d]pyrimidin-4-yl]methanimidamide

N′-[2-Chloro-7-[2,3-O-(1-methylethylidene)-5-O-[(4-methylphenyl)sulfonyl]-β-D-ribofuranosyl]-7H-pyrrolo[2,3-d]pyrimidin-4-yl]-N,N-dimethylmethanimidamide

N,N-Dimethyl-N′-[7-[2,3-O-(1-methylethylidene)-5-O-[(4-methylphenyl)sulfonyl]-β-D-ribofuranosyl]-7H-pyrrolo[2,3-d]pyrimidin-4-yl]methanimidamide

1,3-Bis(1,1-dimethylethyl) 2-[6-iodo-7-[2,3-O-(1-methylethylidene)-β-D-ribofuranosyl]-7H-pyrrolo[2,3-d]pyrimidin-4-yl]imidodicarbonate

1,3-Bis(1,1-dimethylethyl) 2-[7-[(3aS,4R,6R,6aR)-tetrahydro-6-(hydroxymethyl)-2,2-dimethyl-4H-cyclopenta-1,3-dioxol-4-yl]-7H-pyrrolo[2,3-d]pyrimidin-4-yl]imidodicarbonate

N,N-Dimethyl-N′-[2-methyl-7-[2,3-O-(1-methylethylidene)-β-D-ribofuranosyl]-7H-pyrrolo[2,3-d]pyrimidin-4-yl]methanimidamide

N′-[2-Chloro-7-[2,3-O-(1-methylethylidene)-β-D-ribofuranosyl]-7H-pyrrolo[2,3-d]pyrimidin-4-yl]-N,N-dimethylmethanimidamide