(2S,3S,4R,5R) 3-azido-4-hydroxy-5-(6-methylamino-purin-9-yl)-tetrahydro-furan-2-carboxylic acid methylamide

(2S,3S,4R,5R)-3-Azido-5-(2-chloro-6-methylamino-purin-9-yl)-4-hydroxy-tetrahydro-furan-2-carboxylic acid methylamide

9-[2-O-acetyl-3-C-azido-3-deoxy-5-(methylcarbamoyl)-β-D-ribofuranosyl]-2,6-dichloropurine

3-azido-5-(6-methylaminopurin-9-yl)-4-t-butyldimethylsiloxy-tetrahydro-furan-2-carboxylic acid methyl amide

3-amino-5-(6-methylaminopurin-9-yl)-4-t-butyldimethylsiloxy-tetrahydro-furan-2-carboxylic acid methyl amide