N-[7-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-5-iodo-7H-pyrrolo[2,3-d]pyrimidin-4-yl]-2-methylpropanamide

N-[7-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-5-cyclopropyl-7H-pyrrolo[2,3-d]pyrimidin-4-yl]-2-methylpropanamide

N-[7-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-7H-pyrrolo[2,3-d]pyrimidin-4-yl]-2-methylpropanamide

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

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

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

N-[5-Cyclopropyl-7-(2-deoxy-β-D-erythro-pentofuranosyl)-7H-pyrrolo[2,3-d]pyrimidin-4-yl]-2-methylpropanamide

N-[7-(2-Deoxy-β-D-erythro-pentofuranosyl)-7H-pyrrolo[2,3-d]pyrimidin-4-yl]-2-methylpropanamide

4-Chloro-5-cyclopropyl-7-[2-deoxy-3,5-bis-O-(4-methylbenzoyl)-β-D-erythro-pentofuranosyl]-7H-pyrrolo[2,3-d]pyrimidine

Adenosine, 2′-O-(5-aminopentyl)-

Adenosine, N-[(cyclopentyloxy)hydroxyphosphinyl]-

Adenosine, N-[(cyclopentyloxy)hydroxyphosphinyl]-2′,3′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-, 5′-[hydrogen [(2S)-2,3-bis[[(1,1-dimethylethyl)dimethylsilyl]oxy]-1-oxopropyl]phosphoramidate]

Adenosine, N-[(2-cyanoethoxy)(cyclopentyloxy)phosphinyl]-2′,3′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-, 5′-[2-cyanoethyl [(2S)-2,3-bis[[(1,1-dimethylethyl)dimethylsilyl]oxy]-1-oxopropyl]phosphoramidate]

Adenosine, N-[(2-cyanoethoxy)(cyclopentyloxy)phosphinyl]-2′,3′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-

Adenosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-N-[(2-cyanoethoxy)(cyclopentyloxy)phosphinyl]-2′,3′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-