5'-O-[(1,1-dimethylethyl)dimethylsilyl]2',3'-didehydro-2',3'-dideoxyadenosine

D-2',3'-O-thiocarbonylene-5'-O-tert-butyldimethylsilyl adenosine

5'-O-(tert-butyldimethylsilyl)-2',3'-bis-O-[(methylthio)-thiocarbonyl]adenosine

Propanoic acid, 2,2-dimethyl-, [(2S)-2,3-dihydro-2-furanyl]methyl ester