N-[4-Chloro-7-[2-deoxy-3-O-[(1,1-dimethylethyl)dimethylsilyl]-5-O-[(1,1-dimethylethyl)diphenylsilyl]-4-C-(hydroxymethyl)-β-D-erythro-pentofuranosyl]-7H-pyrrolo[2,3-d]pyrimidin-2-yl]-2,2-dimethylpropanamide

N-[4-Chloro-7-[(2R,4S)-4-[[(1,1-dimethylethyl)dimethylsilyl]oxy]tetrahydro-5,5-bis(hydroxymethyl)-2-furanyl]-7H-pyrrolo[2,3-d]pyrimidin-2-yl]-2,2-dimethylpropanamide

N-[4-Chloro-7-[2-deoxy-3-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-erythro-pentofuranosyl]-7H-pyrrolo[2,3-d]pyrimidin-2-yl]-2,2-dimethylpropanamide

N-[7-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-β-D-erythro-pentofuranosyl]-4-chloro-7H-pyrrolo[2,3-d]pyrimidin-2-yl]-2,2-dimethylpropanamide

N-[4-Chloro-7-[2-deoxy-3,5-bis-O-(4-methylphenyl)-β-D-erythro-pentofuranosyl]-7H-pyrrolo[2,3-d]pyrimidin-2-yl]-2,2-dimethylpropanamide

4-Chloro-7-[2-deoxy-3-O-[(1,1-dimethylethyl)dimethylsilyl]-5-O-[(1,1-dimethylethyl)diphenylsilyl]-4-C-(hydroxymethyl)-β-D-erythro-pentofuranosyl]-7H-pyrrolo[2,3-d]pyrimidine

7-[4-C-[[Bis(4-methoxyphenyl)phenylmethoxy]methyl]-2-deoxy-3-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-erythro-pentofuranosyl]-4-chloro-7H-pyrrolo[2,3-d]pyrimidine

(3S,5R)-5-(4-Chloro-7H-pyrrolo[2,3-d]pyrimidin-7-yl)-3-[[(1,1-dimethylethyl)dimethylsilyl]oxy]dihydro-2,2(3H)-furandimethanol

Guanosine, 8-[[[2-[[[[2-[[3-[2-deoxy-3,5-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-erythro-pentofuranosyl]-2,3-dihydro-2-oxo-1H-pyrimido[5,4-b][1,4]benzoxazin-9-yl]oxy]ethyl]amino]carbonyl]amino]phenyl]methyl]thio]-, 2′,3′,5′-triacetate

N-[9-[4-C-Azido-2-deoxy-3-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-erythro-pentofuranosyl]-9H-purin-2-yl]-2-methylpropanamide