methyl 4-deoxy-4-acetamido-2,3-O-isopropylidene-β-L-ribopyranoside

1-(2,3,5-tri-O-acetyl-4-deoxy-4-acetamido-β-L-ribofuranosyl)-5-fluorocytosine

1-[3,5-O-(1,1,3,3-tetraisopropyldisiloxane-1,3-diyl)-2,4-dideoxy-4-acetamido-β-L-ribofuranosyl]thymine

1-(4-deoxy-4-acetamido-β-L-ribofuranosyl)thymine

1-[2,3-O-(1,1,3,3-tetraisopropyldisiloxane-1,3-diyl)-4,5-dideoxy-4-acetamido-β-L-ribofuranosyl]thymine

1-(5-O-tert-butyldimethylsilyl-2,3,4-trideoxy-2,3-didehydro-4-acetamido-β-L-ribofuranosyl)thymine

1-(5-O-tert-butyldimethylsilyl-2,3-O-di-methanesulfonyl-4-deoxy-4-acetamido-β-L-ribofuranosyl)thymine

1-(2,3,4-trideoxy-2,3-didehydro-4-acetamido-β-L-ribofuranosyl)thymine

1-[2-O-(p-tolylthionoformyl)-3,5-O-(1,1,3,3-tetraisopropyldisiloxane-1,3-diyl)-4-deoxy-4-acetamido-β-L-ribofuranosyl]thymine

1-(2,3,5-tri-O-acetyl-4-deoxy-4-acetamido-β-L-ribofuranosyl)thymine

1-(2,3,5-tri-O-acetyl-4-deoxy-4-acetamido-β-L-ribofuranosyl)-5-fluorouracil

1-(2,3,5-tri-O-acetyl-4-deoxy-4-acetamido-α-L-ribofuranosyl)-5-fluorouracil

1-[5-O-(p-tolylthionoformyl)-2,3-O-(1,1,3,3-tetraisopropyldisiloxane-1,3-diyl)-4-deoxy-4-acetamido-β-L-ribofuranosyl]thymine