nucleoside analogue synthesis is described. The approach involves the stereoselective preparation of cis 4-amino-substituted cyclopentene oxides and subsequent chiral base-mediated rearrangement to the corresponding allylic alcohols. Full details on the synthesis and stereoselectivity of epoxidation of 4-amino-substituted cyclopentenes are presented.
描述了用于碳环核苷类似物合成的4-
氨基环戊-2-en-1-醇(90%ee)的不对称合成的新途径。该方法涉及立体选择性制备顺式4-
氨基取代的
环戊烯氧化物和随后手性碱介导的重排成相应的烯丙基醇。给出了4-
氨基取代的
环戊烯环氧化的合成和立体选择性的全部细节。