Uridine, 5′-O-[2-ethoxy-1-(ethoxycarbonyl)-2-oxo-1-[[4-(tetrahydro-2-oxo-1(2H)-pyrimidinyl)phenyl]methyl]ethyl]-3′-C-ethynyl-, 2′,3′-diacetate

Uridine, 5′-O-[2-ethoxy-1-(ethoxycarbonyl)-2-oxo-1-[[4-(tetrahydro-2-oxo-1(2H)-pyrimidinyl)phenyl]methyl]ethyl]-3′-C-ethynyl-5-methyl-, 2′,3′-diacetate

9H-Purine, 2,6-dichloro-9-[2,3-di-O-acetyl-5-O-[2-ethoxy-1-(ethoxycarbonyl)-2-oxo-1-[[4-(tetrahydro-2-oxo-1(2H)-pyrimidinyl)phenyl]methyl]ethyl]-3-C-ethynyl-β-D-ribofuranosyl]-

1H-Pyrazolo[3,4-b]pyridine, 6-chloro-1-[2,3-di-O-acetyl-5-O-[2-ethoxy-1-(ethoxycarbonyl)-2-oxo-1-[[4-(tetrahydro-2-oxo-1(2H)-pyrimidinyl)phenyl]methyl]ethyl]-3-C-ethynyl-β-D-ribofuranosyl]-3-methyl-

Adenosine, 2-chloro-5′-O-[2-ethoxy-1-(ethoxycarbonyl)-1-[[4-(1-ethyl-1,2-dihydro-2-oxo-3-pyridinyl)phenyl]methyl]-2-oxoethyl]-3′-C-ethynyl-N-methyl-, 2′,3′-diacetate

Adenosine, 2-chloro-N-[(1,1-dimethylethoxy)carbonyl]-5′-O-[2-ethoxy-1-(ethoxycarbonyl)-1-[[4-(1-ethyl-1,2-dihydro-2-oxo-3-pyridinyl)phenyl]methyl]-2-oxoethyl]-3′-C-ethynyl-N-methyl-, 2′,3′-diacetate

Adenosine, 2-acetyl-5′-O-[2-ethoxy-1-(ethoxycarbonyl)-2-oxo-1-(phenylmethyl)ethyl]-3′-C-ethynyl-, 2′,3′-diacetate

Adenosine, 5′-O-[2-ethoxy-1-(ethoxycarbonyl)-2-oxo-1-(phenylmethyl)ethyl]-2-(1-ethoxyethenyl)-3′-C-ethynyl-, 2′,3′-diacetate

3H-Imidazo[4,5-b]pyridine, 3-[2,3-di-O-acetyl-5-O-[2-ethoxy-1-(ethoxycarbonyl)-2-oxo-1-(phenylmethyl)ethyl]-3-C-ethynyl-β-D-ribofuranosyl]-5-(trifluoromethyl)-

9H-Purine, 2-chloro-9-[2,3-di-O-acetyl-5-O-(2-ethoxy-2-oxo-1-phosphonoethyl)-3-C-ethynyl-β-D-ribofuranosyl]-6-(4-morpholinyl)-

9H-Purine, 2-chloro-9-[2,3-di-O-acetyl-5-O-[1-(diethoxyphosphinyl)-2-ethoxy-2-oxoethyl]-3-C-ethynyl-β-D-ribofuranosyl]-6-(4-morpholinyl)-

Adenosine, 2-chloro-3′-C-ethynyl-5′-O-(2-methoxy-2-oxo-1-phosphonoethyl)-, 2′,3′-diacetate

Adenosine, 2-chloro-5′-O-[1-(dimethoxyphosphinyl)-2-methoxy-2-oxoethyl]-N,N-bis[(1,1-dimethylethoxy)carbonyl]-3′-C-ethynyl-, 2′,3′-diacetate

Adenosine, 2-cyano-5′-O-[2-ethoxy-1-(ethoxycarbonyl)-2-oxo-1-(phenylmethyl)ethyl]-3′-C-ethynyl-, 2′,3′-diacetate

Adenosine, 2-cyano-N-[(1,1-dimethylethoxy)carbonyl]-5′-O-[2-ethoxy-1-(ethoxycarbonyl)-2-oxo-1-(phenylmethyl)ethyl]-3′-C-ethynyl-, 2′,3′-diacetate

Adenosine, 2-chloro-N-cyclopentyl-5′-O-[1-(aminocarbonyl)-2-ethoxy-2-oxoethyl]-3′-C-ethynyl-, 2′,3′-diacetate

9H-Purine, 2,6-dichloro-9-[2,3-di-O-acetyl-5-O-[(1S)-1-(aminocarbonyl)-2-ethoxy-2-oxoethyl]-3-C-ethynyl-β-D-ribofuranosyl]-

9H-Purine, 2,6-dichloro-9-[2,3-di-O-acetyl-5-O-[(1R)-1-(aminocarbonyl)-2-ethoxy-2-oxoethyl]-3-C-ethynyl-β-D-ribofuranosyl]-

9H-Purine, 2,6-dichloro-9-(2,3-di-O-acetyl-3-C-ethynyl-β-D-ribofuranosyl)-

9H-Purine, 2,6-dichloro-9-[2,3-di-O-acetyl-5-O-[(1,1-dimethylethyl)diphenylsilyl]-3-C-ethynyl-β-D-ribofuranosyl]-