2,4(1H,3H)-Pyrimidinedione, 1-[5-O-[bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-3-O-(2-sulfido-1,3,2-oxathiaphospholan-2-yl)-β-D-threo-pentofuranosyl]-5-methyl-

Thymidine, (S)-P-thio-β-D-threo-thymidylyl-(3′→5′)-

Thymidine, (R)-P-thio-β-D-threo-thymidylyl-(3′→5′)-

Thymidine, [P(S)]-P(O)-(2-cyanoethyl)-P-thio-5′-O-(triphenylmethyl)-β-D-threo-thymidylyl-(3′→5′)-, 3′-acetate

Thymidine, [P(R)]-P(O)-(2-cyanoethyl)-P-thio-5′-O-(triphenylmethyl)-β-D-threo-thymidylyl-(3′→5′)-, 3′-acetate

9-(3-Azido-2,3-dideoxy-2-fluoro-β-D-arabinofuranosyl)-9H-purin-6-amine

Cytidine, 2′-deoxy-5-methylcytidylyl-(3′→5′)-2′-deoxycytidylyl-(3′→5′)-thymidylyl-(3′→5′)-thymidylyl-(3′→5′)-thymidylyl-(3′→5′)-thymidylyl-(3′→5′)-2′-deoxycytidylyl-(3′→5′)-2′-deoxy-

Cytidine, 2′-deoxy-5-methylcytidylyl-(3′→5′)-2′-deoxycytidylyl-(3′→5′)-thymidylyl-(3′→5′)-thymidylyl-(3′→5′)-thymidylyl-(3′→5′)-2′-deoxyadenylyl-(3′→5′)-2′-deoxycytidylyl-(3′→5′)-2′-deoxy-

9-[2-Deoxy-5-O-[hydroxy[[hydroxy(phosphonooxy)phosphinyl]oxy]phosphinyl]-β-L-erythro-pentofuranosyl]-9H-purin-6-amine

Carbonothioic acid, O-[(3′R,6aR,9R,9aR)-1′,5′,6,6′,6a,7′,9,9a-octahydro-2,2,4,4-tetrakis(1-methylethyl)-5′,7′-dioxospiro[8H-furo[3,2-f]-1,3,5,2,4-trioxadisilocin-8,3′-[3H]oxazolo[3,4-c]pyrimidin]-9-yl] O-phenyl ester

(3′R,6aR,9R,9aS)-6,6a,9,9a-Tetrahydro-9-hydroxy-2,2,4,4-tetrakis(1-methylethyl)spiro[8H-furo[3,2-f]-1,3,5,2,4-trioxadisilocin-8,3′-[3H]oxazolo[3,4-c]pyrimidine]-5′,7′(1′H,6′H)-dione

(3′R,6aR,9aS)-6,6a,9,9a-Tetrahydro-2,2,4,4-tetrakis(1-methylethyl)spiro[8H-furo[3,2-f]-1,3,5,2,4-trioxadisilocin-8,3′-[3H]oxazolo[3,4-c]pyrimidine]-5′,7′(1′H,6′H)-dione

(2R,3R,4S,5R)-4,5-Dihydro-3,4-dihydroxy-5-(hydroxymethyl)spiro[furan-2(3H),3′-[3H]oxazolo[3,4-c]pyrimidine]-5′,7′(1′H,6′H)-dione

(2R,3R,4R,5R)-3,4-Bis[[(1,1-dimethylethyl)dimethylsilyl]oxy]-5-[[[(1,1-dimethylethyl)dimethylsilyl]oxy]methyl]-4,5-dihydrospiro[furan-2(3H),3′-[3H]oxazolo[3,4-c]pyrimidine]-5′,7′(1′H,6′H)-dione

Uridine, 2′,3′,5′-tris-O-[(1,1-dimethylethyl)dimethylsilyl]-6-(hydroxymethyl)-

1,2,4-Triazine-3,5(2H,4H)-dione, 2-[5-O-[bis(4-methoxyphenyl)phenylmethyl]-3-O-[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]-2-deoxy-β-D-erythro-pentofuranosyl]-6-(1-hexynyl)-

2-[5-O-[Bis(4-methoxyphenyl)phenylmethyl]-2-deoxy-β-D-erythro-pentofuranosyl]-6-(1-hexyn-1-yl)-1,2,4-triazine-3,5(2H,4H)-dione

2-(2-Deoxy-β-D-erythro-pentofuranosyl)-6-(1-hexyn-1-yl)-1,2,4-triazine-3,5(2H,4H)-dione

2-[2-Deoxy-3,5-bis-O-(4-methylbenzoyl)-β-D-erythro-pentofuranosyl]-6-(1-hexyn-1-yl)-1,2,4-triazine-3,5(2H,4H)-dione

2-[2-Deoxy-3,5-bis-O-(4-methylbenzoyl)-β-D-erythro-pentofuranosyl]-6-iodo-1,2,4-triazine-3,5(2H,4H)-dione