Two convergent approaches towards the synthesis of carbocyclic nucleoside analogs will be described. Both approaches start from the stereochemically pure cyclopentenol 8 that has been prepared enantioselectively from an alkylated cyclopentadiene. Using these approaches, carbocyclic analogues of dT, FdU and BVdU have been prepared. Moreover, the conversion into the cycloSal-pronucleotide and the corresponding nucleotide will be presented for one example.
将描述两种趋同的方法用于合成碳环核苷类似物。这两种方法均以从烷基化
环戊二烯中选择性制备的立体
化学纯
环戊醇8为起点。通过这些方法,已合成出dT、FdU和BVdU的碳环类似物。此外,还将展示一种例子中转化为环Sal-前核苷酸及相应核苷酸的过程。