6H-2,4-Methanofuro[3′,2′:4,5]imidazo[1,2-c]pyrimidine-6,8(7H)-dione, 2-[[bis(4-methoxyphenyl)phenylmethoxy]methyl]hexahydro-3-hydroxy-5-methyl-, (2S,3R,3aS,4S,4aS,5R,9aR)-

6H-2,4-Methanofuro[3′,2′:4,5]imidazo[1,2-c]pyrimidine-6,8(7H)-dione, 2-[[bis(4-methoxyphenyl)phenylmethoxy]methyl]hexahydro-5-methyl-3-(phenylmethoxy)-, (2S,3R,3aS,4S,4aS,5R,9aR)-

6H-2,4-Methanofuro[3′,2′:4,5]imidazo[1,2-c]pyrimidine-6,8(7H)-dione, hexahydro-2-(hydroxymethyl)-5-methyl-3-(phenylmethoxy)-, (2S,3R,3aS,4S,4aS,5S,9aR)-

Phosphoramidous acid, bis(1-methylethyl)-, (2S,3R,3aS,4S,4aR,5S,9aR)-2-[[bis(4-methoxyphenyl)phenylmethoxy]methyl]octahydro-5-methyl-6,8-dioxo-6H-2,4-methanofuro[3′,2′:4,5]imidazo[1,2-c]pyrimidin-3-yl 2-cyanoethyl ester

6H-2,4-Methanofuro[3′,2′:4,5]imidazo[1,2-c]pyrimidine-6,8(7H)-dione, 2-[[bis(4-methoxyphenyl)phenylmethoxy]methyl]hexahydro-3-hydroxy-5-methyl-, (2S,3R,3aS,4S,4aR,5S,9aR)-

6H-2,4-Methanofuro[3′,2′:4,5]imidazo[1,2-c]pyrimidine-6,8(7H)-dione, 2-[[bis(4-methoxyphenyl)phenylmethoxy]methyl]hexahydro-5-methyl-3-(phenylmethoxy)-, (2S,3R,3aS,4S,4aR,5S,9aR)-

6H-2,4-Methanofuro[3′,2′:4,5]imidazo[1,2-c]pyrimidine-6,8(7H)-dione, 2-[(acetyloxy)methyl]hexahydro-5-methyl-3-(phenylmethoxy)-, (2S,3R,3aS,4S,4aS,5R,9aR)-

6H-2,4-Methanofuro[3′,2′:4,5]imidazo[1,2-c]pyrimidine-6,8(7H)-dione, 2-[(acetyloxy)methyl]hexahydro-5-methyl-3-(phenylmethoxy)-, (2S,3R,3aS,4S,4aR,5S,9aR)-

9H-Fluoren-9-ylmethyl (1S,3R,4S,7R)-1-[[bis(4-methoxyphenyl)phenylmethoxy]methyl]-7-[[[bis(1-methylethyl)amino](2-cyanoethoxy)phosphino]oxy]-3-(3,4-dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)-2-oxa-5-azabicyclo[2.2.1]heptane-5-carboxylate

9H-Fluoren-9-ylmethyl (1S,3R,4S,7R)-1-[[bis(4-methoxyphenyl)phenylmethoxy]methyl]-3-(3,4-dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)-7-hydroxy-2-oxa-5-azabicyclo[2.2.1]heptane-5-carboxylate

1-[(1S,3R,4S,7R)-7-Hydroxy-1-(hydroxymethyl)-5-(2,2,2-trifluoroacetyl)-2-oxa-5-azabicyclo[2.2.1]hept-3-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(1S,3R,4S,7R)-1-[[Bis(4-methoxyphenyl)phenylmethoxy]methyl]-7-(phenylmethoxy)-2-oxa-5-azabicyclo[2.2.1]hept-3-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(1S,3R,4S,7R)-1-(Hydroxymethyl)-7-(phenylmethoxy)-2-oxa-5-azabicyclo[2.2.1]hept-3-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

1-[(1S,3R,4S,7R)-1-(Hydroxymethyl)-7-(phenylmethoxy)-5-(2,2,2-trifluoroacetyl)-2-oxa-5-azabicyclo[2.2.1]hept-3-yl]-5-methyl-2,4(1H,3H)-pyrimidinedione

5-Methyl-1-[(1S,3R,4S,7R)-1-[[(methylsulfonyl)oxy]methyl]-7-(phenylmethoxy)-2-oxa-5-azabicyclo[2.2.1]hept-3-yl]-2,4(1H,3H)-pyrimidinedione

1-[2-Azido-2-deoxy-5-O-(methylsulfonyl)-4-C-[[(methylsulfonyl)oxy]methyl]-3-O-(phenylmethyl)-α-L-erythro-pentofuranosyl]-5-methyl-2,4(1H,3H)-pyrimidinedione

4-(2,4-Dimethylphenoxy)-5-methyl-1-[5-O-(methylsulfonyl)-4-C-[[(methylsulfonyl)oxy]methyl]-3-O-(phenylmethyl)-α-L-threo-pentofuranosyl]-2(1H)-pyrimidinone

1-[2-O-Acetyl-5-O-(methylsulfonyl)-4-C-[[(methylsulfonyl)oxy]methyl]-3-O-(phenylmethyl)-α-L-threo-pentofuranosyl]-4-(2,4-dimethylphenoxy)-5-methyl-2(1H)-pyrimidinone

1-[2-O-Acetyl-5-O-(methylsulfonyl)-4-C-[[(methylsulfonyl)oxy]methyl]-3-O-(phenylmethyl)-α-L-threo-pentofuranosyl]-3-benzoyl-5-methyl-2,4(1H,3H)-pyrimidinedione

3-Benzoyl-5-methyl-1-[5-O-(methylsulfonyl)-4-C-[[(methylsulfonyl)oxy]methyl]-3-O-(phenylmethyl)-α-L-threo-pentofuranosyl]-2,4(1H,3H)-pyrimidinedione