作者:Jonas Verhoeven、Hanchu Kong、Yongbin Zhao、Wenbin Wang、Vineet Pande、Marta Brambilla、Kristof Van Hecke、Lieven Meerpoel、Jan Willem Thuring、Guido Verniest
DOI:10.1055/a-1386-7194
日期:2021.6
The stereoselective preparation of a novel 4′-spirocyclopropyl nucleoside analogue has been developed by using a semibenzilic Favorskii rearrangement of a 4′-(2-chloro-3-oxocyclobutyl)spirofuranose as a key step. These chiral spirocyclic intermediates, readily obtained on a multigram scale from chiral-pool starting materials, were shown to be highly suitable precursors for achieving full stereoselectivity
通过使用4'-(2-氯-3-氧代环丁基)螺呋喃糖的半苯甲酸Favorskii重排作为关键步骤,已经开发了新型4'-螺环丙基丙基核苷类似物的立体选择性制剂。这些手性螺环中间体很容易从手性池起始原料以克数形式获得,它们是在还原环收缩序列中实现完全立体选择性的高度合适的前体。通过Vorbrüggen糖基化向下游引入核苷碱基成功地以立体特异性方式形成了相应的新型4'-螺环核苷类似物。