1-Deoxy-N-ethyl-1-[6-[(9H-fluoren-9-ylmethyl)amino]-2-[[[2-(1-piperidinyl)ethyl]amino]carbonyl]-9H-purin-9-yl]-β-D-ribofuranuronamide

1-Deoxy-1-[6-[(2,2-diphenylethyl)amino]-2-[[[3-[methyl(methylsulfonyl)amino]propyl]amino]carbonyl]-9H-purin-9-yl]-N-ethyl-β-D-ribofuranuronamide

1-Deoxy-1-[6-[(2,2-diphenylethyl)amino]-2-[[[3-[methyl(phenylsulfonyl)amino]propyl]amino]carbonyl]-9H-purin-9-yl]-N-ethyl-β-D-ribofuranuronamide

1-Deoxy-1-[6-[(2,2-diphenylethyl)amino]-2-[[[3-(2-pyridinylamino)propyl]amino]carbonyl]-9H-purin-9-yl]-N-ethyl-β-D-ribofuranuronamide

1-Deoxy-1-[6-[(2,2-diphenylethyl)amino]-2-[[[3-[(1-methylethyl)amino]propyl]amino]carbonyl]-9H-purin-9-yl]-N-ethyl-β-D-ribofuranuronamide

1-Deoxy-1-[6-[(2,2-diphenylethyl)amino]-2-[[[4-(1-piperidinyl)butyl]amino]carbonyl]-9H-purin-9-yl]-N-ethyl-β-D-ribofuranuronamide

1-Deoxy-1-[6-[(2,2-diphenylethyl)amino]-2-[[(4-piperidinylmethyl)amino]carbonyl]-9H-purin-9-yl]-N-ethyl-β-D-ribofuranuronamide

1-Deoxy-1-[2-[[[2-(3,4-dihydro-2(1H)-isoquinolinyl)ethyl]amino]carbonyl]-6-[(2,2-diphenylethyl)amino]-9H-purin-9-yl]-N-ethyl-β-D-ribofuranuronamide

1-Deoxy-N-ethyl-1-[6-[[(1S)-1-(hydroxymethyl)-2-phenylethyl]amino]-2-[[[2-(1-piperidinyl)ethyl]amino]carbonyl]-9H-purin-9-yl]-β-D-ribofuranuronamide

1-Deoxy-N-ethyl-1-[6-[(1-ethylpropyl)amino]-2-[[[2-(1-piperidinyl)ethyl]amino]carbonyl]-9H-purin-9-yl]-β-D-ribofuranuronamide

1-Deoxy-1-[6-[(2,2-diphenylethyl)amino]-2-[[[2-(4-morpholinyl)ethyl]amino]carbonyl]-9H-purin-9-yl]-N-ethyl-β-D-ribofuranuronamide

1-Deoxy-1-[6-[(2,2-diphenylethyl)amino]-2-[[[2-(2-pyridinyl)ethyl]amino]carbonyl]-9H-purin-9-yl]-N-ethyl-β-D-ribofuranuronamide

1-Deoxy-1-[6-[(2,2-diphenylethyl)amino]-2-[[[3-(1-pyrrolidinyl)propyl]amino]carbonyl]-9H-purin-9-yl]-N-ethyl-β-D-ribofuranuronamide

1-Deoxy-1-[2-[[[2-(dimethylamino)ethyl]amino]carbonyl]-6-[(2,2-diphenylethyl)amino]-9H-purin-9-yl]-N-ethyl-β-D-ribofuranuronamide

1-Deoxy-1-[6-[(2,2-diphenylethyl)amino]-2-[[(2-phenylethyl)amino]carbonyl]-9H-purin-9-yl]-N-ethyl-β-D-ribofuranuronamide

1-Deoxy-1-[6-[(2,2-diphenylethyl)amino]-2-[[(phenylmethyl)amino]carbonyl]-9H-purin-9-yl]-N-ethyl-β-D-ribofuranuronamide

1-Deoxy-1-[6-[(2,2-diphenylethyl)amino]-2-[[(2-pyridinylmethyl)amino]carbonyl]-9H-purin-9-yl]-N-ethyl-β-D-ribofuranuronamide

1-Deoxy-1-[6-[(2,2-diphenylethyl)amino]-2-[[[2-[4-(1-methylethyl)-1-piperidinyl]ethyl]amino]carbonyl]-9H-purin-9-yl]-N-ethyl-β-D-ribofuranuronamide

1-Deoxy-1-[6-[(2,2-diphenylethyl)amino]-2-[[[2-(1-piperidinyl)ethyl]amino]carbonyl]-9H-purin-9-yl]-N-ethyl-β-D-ribofuranuronamide

2-Chloro-9-(3,5-di-O-benzoyl-2-deoxy-2-fluoro-β-D-arabinofuranosyl)-9H-purin-6-amine