5'-O-acetyl-2',3'-didehydro-2',3'-dideoxy-5-acetoxymethyl-uridine

5-t-butyldiphenylsilyloxymethyl-5'-O-t-butyldiphenylsilyl-2',3'-didehydro-2',3'-dideoxyuridine

2’,3’邻异亚丙基尿苷

1-(2,3-O-isopropylidene-β-D-ribofuranosyl)thymine

5-羟甲基尿苷