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

(2R,3R,4S,5S)-2-(4-Amino-5-fluoro-7H-pyrrolo[2,3-d]pyrimidin-7-yl)tetrahydro-5-phenyl-3,4-furandiol

4-Chloro-5-fluoro-7-[(3aR,4R,6S,6aR)-tetrahydro-2,2-dimethyl-6-phenylfuro[3,4-d]-1,3-dioxol-4-yl]-7H-pyrrolo[2,3-d]pyrimidine

(2R,3R,4S,5S)-Tetrahydro-2-(4-methyl-7H-pyrrolo[2,3-d]pyrimidin-7-yl)-5-phenyl-3,4-furandiol

4-Methyl-7-[(3aR,4R,6S,6aR)-tetrahydro-2,2-dimethyl-6-phenylfuro[3,4-d]-1,3-dioxol-4-yl]-7H-pyrrolo[2,3-d]pyrimidine

1,3-Bis(1,1-dimethylethyl) 2-[7-[(5S)-5-C-(4-fluorophenyl)-2,3-O-(1-methylethylidene)-β-D-ribofuranosyl]-4-methyl-7H-pyrrolo[2,3-d]pyrimidin-2-yl]imidodicarbonate

1,3-Bis(1,1-dimethylethyl) 2-[7-[(5R)-5-C-(4-fluorophenyl)-2,3-O-(1-methylethylidene)-β-D-ribofuranosyl]-4-methyl-7H-pyrrolo[2,3-d]pyrimidin-2-yl]imidodicarbonate

1,3-Bis(1,1-dimethylethyl) 2-[7-[5-C-(4-fluorophenyl)-2,3-O-(1-methylethylidene)-β-D-ribo-pentodialdo-1,4-furanosyl]-4-methyl-7H-pyrrolo[2,3-d]pyrimidin-2-yl]imidodicarbonate

7-[(5S)-5-C-(4-Fluorophenyl)-β-D-ribofuranosyl]-4-methyl-7H-pyrrolo[2,3-d]pyrimidin-2-amine

4-Methyl-7-(6,7,8-trideoxy-β-D-allo-octofuranosyl)-7H-pyrrolo[2,3-d]pyrimidin-2-amine

7-[(5R)-5-C-(4-Fluorophenyl)-β-D-ribofuranosyl]-4-methyl-7H-pyrrolo[2,3-d]pyrimidin-2-amine

7-(6,7-Dideoxy-β-D-allo-heptofuranosyl)-4-methyl-7H-pyrrolo[2,3-d]pyrimidin-2-amine

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

1,1-Dimethylethyl N-[7-[6,7-dideoxy-2,3-O-(1-methylethylidene)-β-D-ribo-heptofuranos-5-ulos-1-yl]-4-methyl-7H-pyrrolo[2,3-d]pyrimidin-2-yl]-N-[(1,1-dimethylethoxy)carbonyl]carbamate

1-[2-[Bis[(1,1-dimethylethoxy)carbonyl]amino]-4-methyl-7H-pyrrolo[2,3-d]pyrimidin-7-yl]-1-deoxy-N-methoxy-N-methyl-2,3-O-(1-methylethylidene)-β-D-ribofuranuronamide

1-[2-[Bis[(1,1-dimethylethoxy)carbonyl]amino]-4-methyl-7H-pyrrolo[2,3-d]pyrimidin-7-yl]-1-deoxy-2,3-O-(1-methylethylidene)-β-D-ribofuranuronic acid

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

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

5-Fluoro-7-[(5R)-5-C-(4-fluorophenyl)-β-D-ribofuranosyl]-7H-pyrrolo[2,3-d]pyrimidin-4-amine

7-[(5R)-5-C-(3,4-Difluorophenyl)-β-D-ribofuranosyl]-5-fluoro-7H-pyrrolo[2,3-d]pyrimidin-4-amine