Spiro[furan-2(3H),3′(5′H)-imidazo[1,2-c]pyrimidine]-5′,7′(6′H)-dione, 2′-(1,1-dimethylethyl)-4-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-5-[[[(1,1-dimethylethyl)dimethylsilyl]oxy]methyl]-4,5,8′,8′a-tetrahydro-, (2S,4S,5R)-

Spiro[furan-2(3H),3′(5′H)-imidazo[1,2-c]pyrimidine]-5′,7′(6′H)-dione, 4-[[(1,1-dimethylethyl)dimethylsilyl]oxy]-5-[[[(1,1-dimethylethyl)dimethylsilyl]oxy]methyl]-4,5,8′,8′a-tetrahydro-2′-methyl-, (2S,4S,5R)-

Uridine, 1′-C-acetyl-2′-deoxy-3′,5′-bis-O-[(1,1-dimethylethyl)dimethylsilyl]-

Thymidine, 5′-amino-5′-deoxy-2-O-ethyl-

Thymidine, 5′-azido-5′-deoxy-2-O-ethyl-

Uridine, 5′-azido-2′,5′-dideoxy-2-O-ethyl-5-iodo-, 3′-acetate

Uridine, 5′-azido-5-bromo-2′,5′-dideoxy-2-O-ethyl-, 3′-acetate

Thymidine, 5′-azido-5′-deoxy-2-O-ethyl-, 3′-acetate

Uridine, 5′-azido-2′,5′-dideoxy-2-O-ethyl-, 3′-acetate

4(1H)-Pyrimidinone, 1-(3-O-acetyl-5-azido-2,5-dideoxy-α-D-erythro-pentofuranosyl)-2-ethoxy-5-iodo-

4(1H)-Pyrimidinone, 1-(3-O-acetyl-5-azido-2,5-dideoxy-α-D-erythro-pentofuranosyl)-5-bromo-2-ethoxy-

4(1H)-Pyrimidinone, 1-(3-O-acetyl-5-azido-2,5-dideoxy-α-D-erythro-pentofuranosyl)-2-ethoxy-5-methyl-

1-(3-O-Acetyl-5-azido-2,5-dideoxy-α-D-erythro-pentofuranosyl)-2-ethoxy-4(1H)-pyrimidinone

Inosine, 2′,3′-dideoxy-2′-fluoro-5′-O-(8-methyl-2-oxido-4H-1,3,2-benzodioxaphosphorin-2-yl)-

6H-Purin-6-one, 9-[2,3-dideoxy-2-fluoro-5-O-(8-methyl-2-oxido-4H-1,3,2-benzodioxaphosphorin-2-yl)-β-D-threo-pentofuranosyl]-1,9-dihydro-

Adenosine, 2′,3′-dideoxy-2′-fluoro-5′-O-(8-methyl-2-oxido-4H-1,3,2-benzodioxaphosphorin-2-yl)-

Adenosine, 2′,3′-dideoxy-2′-fluoro-5′-O-(6-methoxy-2-oxido-4H-1,3,2-benzodioxaphosphorin-2-yl)-

Adenosine, 2′,3′-dideoxy-2′-fluoro-5′-O-(2-oxido-4H-1,3,2-benzodioxaphosphorin-2-yl)-

9H-Purin-6-amine, 9-[2,3-dideoxy-2-fluoro-5-O-(8-methyl-2-oxido-4H-1,3,2-benzodioxaphosphorin-2-yl)-β-D-threo-pentofuranosyl]-

9H-Purin-6-amine, 9-[2,3-dideoxy-2-fluoro-5-O-(6-methoxy-2-oxido-4H-1,3,2-benzodioxaphosphorin-2-yl)-β-D-threo-pentofuranosyl]-