7-(4-Chlorophenyl)-2,3-dihydro-3-(4-methoxyphenyl)-5-phenyl-2-thioxo-1-(2,3,5-tri-O-benzoyl-β-D-ribofuranosyl)pyrido[2,3-d]pyrimidin-4(1H)-one

7-(4-Chlorophenyl)-2,3-dihydro-3-(2-methoxyphenyl)-5-phenyl-2-thioxo-1-(2,3,5-tri-O-benzoyl-β-D-ribofuranosyl)pyrido[2,3-d]pyrimidin-4(1H)-one

5-(2-Furanyl)-2,3-dihydro-3-(4-methoxyphenyl)-7-phenyl-2-thioxo-1-(2,3,5-tri-O-benzoyl-β-D-ribofuranosyl)pyrido[2,3-d]pyrimidin-4(1H)-one

5-(2-Furanyl)-2,3-dihydro-3-(2-methoxyphenyl)-7-phenyl-2-thioxo-1-(2,3,5-tri-O-benzoyl-β-D-ribofuranosyl)pyrido[2,3-d]pyrimidin-4(1H)-one

7-(4-Chlorophenyl)-5-(2-furanyl)-2,3-dihydro-3-(4-methoxyphenyl)-2-thioxo-1-(2,3,5-tri-O-benzoyl-β-D-ribofuranosyl)pyrido[2,3-d]pyrimidin-4(1H)-one

7-(4-Chlorophenyl)-5-(2-furanyl)-2,3-dihydro-3-(2-methoxyphenyl)-2-thioxo-1-(2,3,5-tri-O-benzoyl-β-D-ribofuranosyl)pyrido[2,3-d]pyrimidin-4(1H)-one

Carbamic acid, [4,4,4-trifluoro-3,3-bis(trifluoromethyl)butoxy]-, (2R,3R,3aS,9aR)-2,3,3a,9a-tetrahydro-2-(hydroxymethyl)-6-oxo-6H-furo[2′,3′:4,5]oxazolo[3,2-a]pyrimidin-3-yl ester

Carbamic acid, [2-[[6-deoxy-2,3,4-tris-O-(phenylmethyl)-α-L-galactopyranosyl]oxy]ethoxy]-, (2R,3R,3aS,9aR)-2,3,3a,9a-tetrahydro-2-(hydroxymethyl)-6-oxo-6H-furo[2′,3′:4,5]oxazolo[3,2-a]pyrimidin-3-yl ester

Carbamic acid, (phenylmethoxy)-, (2R,3R,3aS,9aR)-2,3,3a,9a-tetrahydro-2-(hydroxymethyl)-6-oxo-6H-furo[2′,3′:4,5]oxazolo[3,2-a]pyrimidin-3-yl ester

(2R,3R,3aS,9aR)-2,3,3a,9a-Tetrahydro-2-(hydroxymethyl)-3-[[(phenylmethoxy)amino]oxy]-6H-furo[2′,3′:4,5]oxazolo[3,2-a]pyrimidin-6-one

(2R,3R,3aS,9aR)-2,3,3a,9a-Tetrahydro-2-(hydroxymethyl)-6-oxo-6H-furo[2′,3′:4,5]oxazolo[3,2-a]pyrimidin-3-yl 2,2,2-trichloroethanimidate

(2R,3R,3aS,9aR)-2,3,3a,9a-Tetrahydro-2-(hydroxymethyl)-3-[[(1E)-2-(phenylsulfonyl)ethenyl]oxy]-6H-furo[2′,3′:4,5]oxazolo[3,2-a]pyrimidin-6-one

Carbamic acid, methoxy-, (2R,3R,3aS,9aR)-2,3,3a,9a-tetrahydro-2-(hydroxymethyl)-6-oxo-6H-furo[2′,3′:4,5]oxazolo[3,2-a]pyrimidin-3-yl ester

(2R,3R,3aS,9aR)-3-[(Dimethyl-2-propen-1-ylsilyl)oxy]-2,3,3a,9a-tetrahydro-2-(hydroxymethyl)-6H-furo[2′,3′:4,5]oxazolo[3,2-a]pyrimidin-6-one

(2R,3R,3aS,9aR)-2,3,3a,9a-Tetrahydro-2-(hydroxymethyl)-6-oxo-6H-furo[2′,3′:4,5]oxazolo[3,2-a]pyrimidin-3-yl 1H-imidazole-1-carboxylate

Carbamic acid, [[(1,1-dimethylethyl)dimethylsilyl]oxy]-, (2R,3R,3aS,9aR)-2,3,3a,9a-tetrahydro-2-(hydroxymethyl)-6-oxo-6H-furo[2′,3′:4,5]oxazolo[3,2-a]pyrimidin-3-yl ester

(1E)-N′-[(6aS,7R,8R,9aR)-3,4,6a,7,8,9a-Hexahydro-7-hydroxy-8-[[(4-methoxyphenyl)diphenylmethoxy]methyl]-4-oxofuro[2′,3′:4,5]thiazolo[3,2-e]purin-2-yl]-N,N-dimethylmethanimidamide

Guanosine, 8-bromo-5′-O-[(4-methoxyphenyl)diphenylmethyl]-N-[(dimethylamino)methylene]-, 2′-methanesulfonate, [N(E)]-

Guanosine, 8-bromo-N-[(dimethylamino)methylene]-5′-O-[(4-methoxyphenyl)diphenylmethyl]-, [N(E)]-

Guanosine, 5′-O-[bis(4-methoxyphenyl)phenylmethyl]-2′-deoxy-N-(2-methyl-1-oxopropyl)-, 3′-[1-(cyanomethyl)-2,2-diethyl-4-pentenyl (4-methyl-1H-imidazol-1-yl)phosphonite]