1-(5'-amino-3',5'-dideoxy-α-L-arabinofuranosyl)uracil

1-(5'-azido-3',5'-dideoxy-α-L-arabinofuranosyl)uracil

1-(3-deoxy-2-tert-butyldimethylsiloxy-α-L-arabinofuranosyl)uracil

(2R,4R,5R)-4-(tert-Butyl-dimethyl-silanyloxy)-5-(2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-tetrahydro-furan-2-carboxylic acid

1-(5'-azido-3',5'-dideoxy-2'-tert-butyldimethylsilyloxy-α-L-arabinofuranosyl)uracil