三氟胸苷 、
bis((2-phenylpropan-2-yl)oxy)methane 、 toluenesulfonic anhydride 在
2'-deoxy-5'-O-(alpha,alpha-dimethylbenzyl)-5-trifluoromethyluridine 、 2'-deoxy-3'-O-(alpha,alpha-dimethylbenzyl)-5-trifluoromethyluridine 作用下,
以
1,4-二氧六环 为溶剂,
反应 3.5h,
以to obtain 0.40 g (yield: 29.2%) of hygroscopic and amorphous 2'-deoxy-5'-O-(α,α-dimethylbenzyl)-5-trifluoromethyluridine (compound 22) and 0.28 g (yield: 20.4%) of hygroscopic and amorphous 2'-deoxy-3'-O-(α,α-dimethylbenzyl)-5-trifluoromethyluridine (compound 23)的产率得到2'-deoxy-5'-O-(alpha,alpha-dimethylbenzyl)-5-trifluoromethyluridine