Guanosine, 5′-amino-5′-deoxy-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-2′-O-[3-[3-[[[(2S)-1-ethyl-2-pyrrolidinyl]amino]carbonyl]-4,5-dimethoxyphenyl]propyl]-N-(2-methyl-1-oxopropyl)-

Guanosine, 3′-O-[(1,1-dimethylethyl)dimethylsilyl]-2′-O-[3-[3-[[[(2S)-1-ethyl-2-pyrrolidinyl]amino]carbonyl]-4,5-dimethoxyphenyl]propyl]-N-(2-methyl-1-oxopropyl)-, 5′-(4-methylbenzenesulfonate)

Guanosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-3′-O-[(1,1-dimethylethyl)dimethylsilyl]-2′-O-[3-[3-[[[(2S)-1-ethyl-2-pyrrolidinyl]amino]carbonyl]-4,5-dimethoxyphenyl]propyl]-N-(2-methyl-1-oxopropyl)-

Guanosine, 2′-O-[3-[3-[[[(2S)-1-ethyl-2-pyrrolidinyl]amino]carbonyl]-4,5-dimethoxyphenyl]propyl]-N-(2-methyl-1-oxopropyl)-

1-[(3aR,4S,6R,6aR)-Hexahydro-4-[[(4-methoxyphenyl)diphenylmethoxy]methyl]-2-oxofuro[3,4-b]furan-6-yl]-2,4(1H,3H)-pyrimidinedione

2,4(1H,3H)-Pyrimidinedione, 1-(2,5-dideoxy-2,5-episeleno-α-D-arabinofuranosyl)-5-methyl-

2,4(1H,3H)-Pyrimidinedione, 1-(2,5-dideoxy-2,5-episeleno-α-D-arabinofuranosyl)-

2,4(1H,3H)-Pyrimidinedione, 1-[2,5-dideoxy-2,5-episeleno-3-O-(trimethylsilyl)-α-D-arabinofuranosyl]-5-methyl-

2,4(1H,3H)-Pyrimidinedione, 1-[2,5-dideoxy-2,5-episeleno-3-O-(trimethylsilyl)-α-D-arabinofuranosyl]-

Ethanethioic acid, S-[9-[2-deoxy-3,5-bis-O-(2-methyl-1-oxopropyl)-β-D-erythro-pentofuranosyl]-9H-purin-2-yl] ester

2-Chloro-9-[2-deoxy-3,5-bis-O-(2-methyl-1-oxopropyl)-β-D-erythro-pentofuranosyl]-9H-purine

9-[2-Deoxy-3,5-bis-O-(2-methyl-1-oxopropyl)-β-D-erythro-pentofuranosyl]-9H-purin-2-amine