N-[9-[(1R,3R,4R,7S)-1-[[Bis(4-methoxyphenyl)phenylmethoxy]methyl]-7-hydroxy-5-(2-pyrimidinyl)-2-oxa-5-azabicyclo[2.2.1]hept-3-yl]-9H-purin-6-yl]benzamide

2-Amino-9-[(1R,3R,4R,7S)-1-[[bis(4-methoxyphenyl)phenylmethoxy]methyl]-7-hydroxy-5-(2-pyrimidinyl)-2-oxa-5-azabicyclo[2.2.1]hept-3-yl]-1,9-dihydro-6H-purin-6-one

2-Amino-9-[(1R,3R,4R,7S)-1-[[bis(4-methoxyphenyl)phenylmethoxy]methyl]-7-hydroxy-2-oxa-5-azabicyclo[2.2.1]hept-3-yl]-1,9-dihydro-6H-purin-6-one

N′-[9-[(1R,3R,4R,7S)-1-[[Bis(4-methoxyphenyl)phenylmethoxy]methyl]-7-hydroxy-5-(2-pyrimidinyl)-2-oxa-5-azabicyclo[2.2.1]hept-3-yl]-6,9-dihydro-6-oxo-1H-purin-2-yl]-N,N-dimethylmethanimidamide

N-[1-[(1R,3R,4R,7S)-1-[[Bis(4-methoxyphenyl)phenylmethoxy]methyl]-7-hydroxy-5-(2-pyrimidinyl)-2-oxa-5-azabicyclo[2.2.1]hept-3-yl]-1,2-dihydro-5-methyl-2-oxo-4-pyrimidinyl]benzamide

4-Amino-1-[(1R,3R,4R,7S)-1-[[bis(4-methoxyphenyl)phenylmethoxy]methyl]-7-hydroxy-5-(2-pyrimidinyl)-2-oxa-5-azabicyclo[2.2.1]hept-3-yl]-5-methyl-2(1H)-pyrimidinone

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

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

(1R,3R,4R,7S)-3-[4-(Benzoylamino)-5-methyl-2-oxo-1(2H)-pyrimidinyl]-1-[[bis(4-methoxyphenyl)phenylmethoxy]methyl]-7-hydroxy-N,N-dimethyl-2-oxa-5-azabicyclo[2.2.1]heptane-5-carboxamide

(1R,3R,4R,7S)-1-[[Bis(4-methoxyphenyl)phenylmethoxy]methyl]-3-(3,4-dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)-7-hydroxy-N,N-dimethyl-2-oxa-5-azabicyclo[2.2.1]heptane-5-carboxamide

(1R,3R,4R,7S)-3-[6-(Benzoylamino)-9H-purin-9-yl]-1-[[bis(4-methoxyphenyl)phenylmethoxy]methyl]-N-(1-methylethyl)-7-[(trimethylsilyl)oxy]-2-oxa-5-azabicyclo[2.2.1]heptane-5-carboxamide

(1R,3R,4R,7S)-3-[6-(Benzoylamino)-9H-purin-9-yl]-1-[[bis(4-methoxyphenyl)phenylmethoxy]methyl]-7-hydroxy-N-(1-methylethyl)-2-oxa-5-azabicyclo[2.2.1]heptane-5-carboxamide

(1R,3R,4R,7S)-3-[4-(Benzoylamino)-5-methyl-2-oxo-1(2H)-pyrimidinyl]-1-[[bis(4-methoxyphenyl)phenylmethoxy]methyl]-7-hydroxy-N-(1-methylethyl)-2-oxa-5-azabicyclo[2.2.1]heptane-5-carboxamide

(1R,3R,4R,7S)-1-[[Bis(4-methoxyphenyl)phenylmethoxy]methyl]-3-(3,4-dihydro-5-methyl-2,4-dioxo-1(2H)-pyrimidinyl)-7-hydroxy-N-(1-methylethyl)-2-oxa-5-azabicyclo[2.2.1]heptane-5-carboxamide

(1R,3R,4R,7S)-3-[6-(Benzoylamino)-9H-purin-9-yl]-1-[[bis(4-methoxyphenyl)phenylmethoxy]methyl]-7-hydroxy-N-methyl-2-oxa-5-azabicyclo[2.2.1]heptane-5-carboxamide

(1R,3R,4R,7S)-3-[6-(Benzoylamino)-9H-purin-9-yl]-1-[[bis(4-methoxyphenyl)phenylmethoxy]methyl]-N-methyl-7-[(trimethylsilyl)oxy]-2-oxa-5-azabicyclo[2.2.1]heptane-5-carboxamide