(E/Z)-2-[(3aS,6R,6aR)-6-[(tert-butyl(diphenyl)silyl)oxymethyl]-2,2-dimethyl-3a,4,6,6a-tetrahydrofuro[3,4-d][1,3]dioxol-4-yl]-2-cyanovinyl methanesulfonate

7-((3aS,4S,6R,6aR)-6-((tert-butyldiphenylsilyloxy)methyl)-2,2-dimethyltetrahydrofuro[3,4-d][1,3]dioxol-4-yl)furo[3,2-d]pyrimidin-4-amine

((3aR,4R,6S,6aS)-6-(4-(((S)-2,3-dihydro-1H-inden-1-yl)amino)furo[3,2-d]pyrimidin-7-yl)-2,2-dimethyltetrahydrofuro[3,4-d][1,3]dioxol-4-yl)methyl sulfamate

((3aR,4R,6S,6aS)-6-(4-aminopyrazolo[1,5-a][1,3,5]triazin-8-yl)-2,2-dimethyltetrahydrofuro[3,4-d][1,3]dioxol-4-yl)methyl sulfamate

2-(2-((3aS,6R,6aR)-6-((tert-butyldiphenylsilyloxy)methyl)-2,2-dimethyltetrahydrofuro[3,4-d][1,3]dioxol-4-yl)-2-cyanovinyl)hydrazinecarbothioamide