6-Chloro-9-[3-deoxy-2,5-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-β-D-erythro-pentofuranosyl]-2-(tributylstannyl)-9H-purine

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

Thymidine, 3′-deoxy-3′-isocyano-, 5′-benzoate

Thymidine, 3′-deoxy-3′-(formylamino)-, 5′-benzoate

Uridine, 2′,5′-dideoxy-5′-[[(2S)-2-(2,4-dichloro-5-methoxyphenoxy)-1-oxopropyl]amino]-5-ethyl-

2′,5′-Dideoxy-5-ethyl-5′-[(2-phenoxyacetyl)amino]uridine

Thymidine, 5′-deoxy-5′-[(1-oxopentyl)amino]-

Thymidine, 5′-deoxy-5′-[(methylsulfonyl)amino]-

Thymidine, 2′-deoxy-8-methyl-7-deazaguanylyl-(3′→5′)-thymidylyl-(3′→5′)-2′-deoxy-8-methyl-7-deazaguanylyl-(3′→5′)-thymidylyl-(3′→5′)-2′-deoxy-8-methyl-7-deazaguanylyl-(3′→5′)-thymidylyl-(3′→5′)-2′-deoxy-8-methyl-7-deazaguanylyl-(3′→5′)-

Guanosine, 2′-deoxy-8-methyl-7-deazaguanylyl-(3′→5′)-2′-deoxy-8-methyl-7-deazaguanylyl-(3′→5′)-2′-deoxy-8-methyl-7-deazaguanylyl-(3′→5′)-2′-deoxy-8-methyl-7-deazaguanylyl-(3′→5′)-2′-deoxy-8-methyl-7-deazaguanylyl-(3′→5′)-2′-deoxy-

Propanamide, N-[7-[5-O-[bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-4,7-dihydro-6-methyl-4-oxo-1H-pyrrolo[2,3-d]pyrimidin-2-yl]-2-methyl-

Propanamide, N-[7-[5-O-[bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-3-O-phosphono-β-D-erythro-pentofuranosyl]-4,7-dihydro-6-methyl-4-oxo-1H-pyrrolo[2,3-d]pyrimidin-2-yl]-2-methyl-

7-(2-Deoxy-β-D-erythro-pentofuranosyl)-4-methoxy-6-methyl-7H-pyrrolo[2,3-d]pyrimidin-2-amine

4-Chloro-7-[2-deoxy-3,5-bis-O-(4-methylbenzoyl)-β-D-erythro-pentofuranosyl]-6-methyl-7H-pyrrolo[2,3-d]pyrimidin-2-amine