3'-O-[3-[[(3S,5R)-3-(Benzoyloxy)-5-[3,4-dihydro-5-methyl-2,4-dioxo-3-[(phenylmethoxy)methyl]-1(2H)-pyrimidinyl]tetrahydro-2-furanyl]thio]propyl]-5'-O-[(1,1-dimethylethyl)diphenylsilyl]thymidine

3'-Deoxy-3'-[3-[[(3S,5R)-5-(3,4-dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)tetrahydro-3-hydroxy-2-furanyl]amino]propyl]thymidine

3'-Deoxy-5'-O-[(1,1-dimethylethyl)diphenylsilyl]-3-[[[[[(3S,5R)-5-(3,4-dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)-3-[[(1,1-dimethylethyl)diphenylsilyl]oxy]tetrahydro-2-furanyl]oxy]hydroxyphosphinyl]thio]methyl]thymidine

Uridine, 2',3',5'-tris(3,5-dinitrobenzoate)

Thymidine, 3',5'-bis(4-methoxybenzoate)

Adenosine, 3'-deoxy-N,N-dimethyl-3'-phthalimido-, diacetate

2,4(1H,3H)-Pyrimidinedione, 1-[5-(3-azidopropyl)tetrahydro-4-hydroxy-2-furanyl]-5-ethyl-, [2R-(2α,4β,5α)]-

2,4(1H,3H)-Pyrimidinedione, 5-ethyl-1-[tetrahydro-4-hydroxy-5-(3-hydroxypropyl)-2-furanyl]-, [2R-(2α,4β,5α)]-

2,4(1H,3H)-Pyrimidinedione, 1-[4-(acetyloxy)-5-[3-(acetyloxy)propyl]tetrahydro-2-furanyl]-5-ethyl-, [2R-(2α,4β,5α)]-

2-Furanpropanoic acid, 3-(acetyloxy)-5-(5-ethyl-3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)tetrahydro-, ethyl ester, [2R-(2α,3β,5α)]-

2-Propenoic acid, 3-[3-(acetyloxy)-5-(5-ethyl-3,4-dihydro-2,4-dioxo-1(2H)-pyrimidinyl)tetrahydro-2-furanyl]-, ethyl ester, [2R-[2α(E),3β,5α]]-

2,4(1H,3H)-Pyrimidinedione, 1-[5-(3-aminopropyl)tetrahydro-4-hydroxy-2-furanyl]-5-ethyl-, [2R-(2α,4β,5α)]-

1-(5-Azido-2,5-dideoxy-2-fluoro-β-D-arabinofuranosyl)-5-ethyl-2,4(1H,3H)-pyrimidinedione

1-(5-Amino-2,5-dideoxy-2-fluoro-β-D-arabinofuranosyl)-5-ethyl-2,4(1H,3H)-pyrimidinedione

Uridine, 5'-azido-5-(2-chloroethyl)-2',5'-dideoxy-

Cytidine, 5'-azido-N-benzoyl-2',5'-dideoxy-5-ethyl-

Cytidine, N-benzoyl-2'-deoxy-5-ethyl-

Cytidine, 5'-amino-N-benzoyl-2',5'-dideoxy-5-ethyl-

Uridine, 5'-azido-2',5'-dideoxy-5-ethyl-3'-O-ethyl-

Uridine, 2'-deoxy-5-ethyl-3'-O-ethyl-