Asymmetric Induction of Conduritols via AAA Reactions: Synthesis of the Aminocyclohexitol of Hygromycin A
作者:Barry M. Trost、Joseph Dudash, Jr.、Erik J. Hembre
DOI:10.1002/1521-3765(20010417)7:8<1619::aid-chem16190>3.0.co;2-4
日期:2001.4.17
Two synthetic routes towards the construction of the aminocyclohexitol moiety of hygromycin A have been developed based on palladium-catalyzed asymmetric alkylation of conduritol derivatives. A protocol has been established whereby this biologically relevant molecule is formed from benzoquinone. A conduritol A derivative is synthesized in eight steps from benzoquinone and is then subjected to the palladium
基于钯催化的Conduritol衍生物的不对称烷基化,已开发出两种构建潮霉素A氨基环己糖醇部分的合成途径。已经建立了一种方案,由此该生物学上相关的分子由苯醌形成。从苯醌以八个步骤合成Conduritol A衍生物,然后进行钯反应。从这种柔性中间体中,可以得到具有完全立体选择性的氨基环醇的四种差向异构体,包括天然的一种。外消旋的conduritol B衍生物可从苯醌中分四个步骤获得,然后通过钯催化的动态动力学拆分将其对映体纯。氨基环糖醇可以从手性调和醇B中分六步获得。