3'-Acetyl-2'-deoxy-5-ethynyl-5'-(4,4'-dimethoxytrityl)uridine

2'-脱氧尿苷

3,5-双乙酰基-5-碘代-2-脱氧尿苷

二乙酰基-2'脱氧尿苷

5-(1-chloroethenyl)-1H-pyrimidine-2,4-dione