(1S,3R,4R,7S)-3-(2,6-dipropyl-9H-purin-9-yl)-1-(hydroxymethyl)-2,5-dioxabicyclo[2.2.1]heptan-7-ol

9-((1R,3R,4R,7S)-7-(benzyloxy)-1-((tert-butyldiphenylsilyloxy)methyl)-2,5-dioxabicyclo[2.2.1]heptan-3-yl)-2,6-di(furan-2-yl)-9H-purine

(1S,3R,4R,7S)-3-(2,6-di(thiophen-2-yl)-9H-purin-9-yl)-1-(hydroxymethyl)-2,5-dioxabicyclo[2.2.1]heptan-7-ol