(2S,3S,4R,5R)-2-(3-Cyclopropyl-1,2,4-oxadiazol-5-yl)-5-[6-[(1-ethylpropyl)amino]-2-[[2-(1-piperidinyl)ethyl]amino]-9H-purin-9-yl]tetrahydro-3,4-furandiol

(2R,3R,4S,5S)-2-[6-[(2,2-Diphenylethyl)amino]-2-[[2-(1H-imidazol-5-yl)ethyl]amino]-9H-purin-9-yl]tetrahydro-5-(3-methyl-1,2,4-oxadiazol-5-yl)-3,4-furandiol

(2R,3R,4S,5S)-2-[6-[(2,2-Diphenylethyl)amino]-2-[[2-(1-methyl-1H-imidazol-4-yl)ethyl]amino]-9H-purin-9-yl]tetrahydro-5-(3-propyl-1,2,4-oxadiazol-5-yl)-3,4-furandiol

(2R,3R,4S,5S)-2-[6-[(2,2-Diphenylethyl)amino]-2-[[2-(1-piperidinyl)ethyl]amino]-9H-purin-9-yl]-5-(3-ethyl-1,2,4-oxadiazol-5-yl)tetrahydro-3,4-furandiol

(2R,3R,4S,5S)-2-[6-[(2,2-Diphenylethyl)amino]-2-[[2-(4-morpholinyl)ethyl]amino]-9H-purin-9-yl]-5-(3-ethyl-1,2,4-oxadiazol-5-yl)tetrahydro-3,4-furandiol

(2R,3R,4S,5S)-2-[6-Amino-2-[[2-(2-pyridinyl)ethyl]amino]-9H-purin-9-yl]tetrahydro-5-(3-methyl-1,2,4-oxadiazol-5-yl)-3,4-furandiol

(2R,3R,4S,5S)-2-[6-[(1-Ethylpropyl)amino]-2-[[(1S)-1-(hydroxymethyl)-2-methylpropyl]amino]-9H-purin-9-yl]tetrahydro-5-(3-methyl-1,2,4-oxadiazol-5-yl)-3,4-furandiol

(2S,3S,4R,5R)-2-(3-Ethyl-1,2,4-oxadiazol-5-yl)-5-[6-[(1-ethylpropyl)amino]-2-[(3R)-3-pyrrolidinylamino]-9H-purin-9-yl]tetrahydro-3,4-furandiol

(2R,3R,4S,5S)-2-[6-[(1-Ethylpropyl)amino]-2-[(3R)-3-pyrrolidinylamino]-9H-purin-9-yl]tetrahydro-5-(3-methyl-1,2,4-oxadiazol-5-yl)-3,4-furandiol

(2S,3S,4R,5R)-2-(3-Ethyl-1,2,4-oxadiazol-5-yl)-5-[6-[(1-ethylpropyl)amino]-2-[[(1S,2S)-2-hydroxycyclopentyl]amino]-9H-purin-9-yl]tetrahydro-3,4-furandiol

(2R,3R,4S,5S)-2-[6-[(1-Ethylpropyl)amino]-2-[[(1S,2S)-2-hydroxycyclopentyl]amino]-9H-purin-9-yl]tetrahydro-5-(3-methyl-1,2,4-oxadiazol-5-yl)-3,4-furandiol

(2R,3R,4S,5S)-2-[2-(Cyclopentylamino)-6-[(1-ethylpropyl)amino]-9H-purin-9-yl]-5-(3-ethyl-1,2,4-oxadiazol-5-yl)tetrahydro-3,4-furandiol

(2R,3R,4S,5S)-2-[2-(Cyclopentylamino)-6-[(1-ethylpropyl)amino]-9H-purin-9-yl]tetrahydro-5-(3-methyl-1,2,4-oxadiazol-5-yl)-3,4-furandiol

(2S,3S,4R,5R)-2-(3-Ethyl-1,2,4-oxadiazol-5-yl)-5-[6-[(1-ethylpropyl)amino]-2-[[2-(2-pyridinyl)ethyl]amino]-9H-purin-9-yl]tetrahydro-3,4-furandiol

(2S,3S,4R,5R)-2-(3-Ethyl-1,2,4-oxadiazol-5-yl)-5-[6-[(1-ethylpropyl)amino]-2-[[2-(1-piperidinyl)ethyl]amino]-9H-purin-9-yl]tetrahydro-3,4-furandiol

(2S,3S,4R,5R)-2-(3-Ethyl-1,2,4-oxadiazol-5-yl)-5-[6-[(1-ethylpropyl)amino]-2-[[2-(4-morpholinyl)ethyl]amino]-9H-purin-9-yl]tetrahydro-3,4-furandiol

(2R,3R,4S,5S)-2-[6-[(1-Ethylpropyl)amino]-2-[[2-(1-piperidinyl)ethyl]amino]-9H-purin-9-yl]tetrahydro-5-(3-methyl-1,2,4-oxadiazol-5-yl)-3,4-furandiol

(2R,3R,4S,5S)-2-[6-[(1-Ethylpropyl)amino]-2-[[(1S)-1-(hydroxymethyl)-2-phenylethyl]amino]-9H-purin-9-yl]tetrahydro-5-(3-methyl-1,2,4-oxadiazol-5-yl)-3,4-furandiol

(2R,3R,4S,5S)-2-[6-Amino-2-[(2-phenylethyl)amino]-9H-purin-9-yl]tetrahydro-5-(3-methyl-1,2,4-oxadiazol-5-yl)-3,4-furandiol

(2R,3R,4S,5S)-2-[6-[(1-Ethylpropyl)amino]-2-[[2-(1-methyl-1H-imidazol-4-yl)ethyl]amino]-9H-purin-9-yl]tetrahydro-5-(3-methyl-1,2,4-oxadiazol-5-yl)-3,4-furandiol