Stereoselective Reformatskii–Claisen rearrangement: synthesis of 2′,3′-dideoxy-6′,6′-difluoro-2′-thionucleosides
作者:Feng Zheng、Xingang Zhang、Feng-Ling Qing
DOI:10.1039/b819289h
日期:——
A new approach for the stereoselective synthesis of 2â²,3â²-dideoxy-6â²,6â²-difluoro-2â²-thionucleosides, analogues of highly bioactive L-OddC and 3TC, has been developed viaTMSCl/pyridine induced stereoselective ReformatskiiâClaisen rearrangement of secondary allyl chlorodifluoroacetate and then a regioselective Pummerer reaction to introduce bases.
一种新的立体选择性合成2′,3′-二脱氧-6′,6′-二氟-2′-硫核苷的方法已被开发,该方法是通过TMSCl/吡啶诱导的立体选择性Reformatskii–Claisen重排次级烯丙基氯二氟乙酸酯,然后进行区域选择性的Pummerer反应以引入碱基,这些化合物是高度活性的L-OddC和3TC的类似物。