Enantioselective Synthesis of Protected Nitrocyclohexitols with Five Stereocenters. Total Synthesis of (+)-Pancratistatin
作者:Fernando Cagide-Fagín、Olaia Nieto-García、Hugo Lago-Santomé、Ricardo Alonso
DOI:10.1021/jo3022567
日期:2012.12.21
2-dimethyl-1,3-dioxan-5-one, a procedure that renders highly oxygenated nitrocyclohexanes endowed with five new stereocenters. Use of this reaction allowed the development of a total synthesis of the antitumoral natural product (+)-pancratistatin; it also converted our previous racemic route to tetrodotoxin into an enantioselective one.
除其他几种脯氨酸衍生物外,2-甲氧基甲基吡咯烷最好地用于控制β-(杂)芳基-α-硝基-α,β-烯醛与商品2,2-二甲基-1,3的对映选择性[3 + 3]环化-dioxan-5-one,一种程序,该程序使高度氧化的硝基环己烷具有五个新的立体中心。使用该反应可以开发出抗肿瘤天然产物(+)-胰抑素的全合成。它也将我们以前的消旋途径从河豚毒素转化为对映体选择性途径。