作者:Duy Mai、Dmitriy Uchenik、Christopher Vanderwal
DOI:10.1055/s-0036-1588560
日期:2017.9
crotogoudin are discussed, and efforts to achieve each are described. First, a Cope rearrangement/intramolecular Diels–Alder cascade reaction was investigated. Second, a bioinspired sequence of cationic bicyclization and A-ring oxidative fragmentation set-up for a lactonization induced by a phenolic oxidation, ultimately providing a tricyclic intermediate that required only installation of the bridging ring
讨论了二萜类 crotogoudin 的两种合成设计,并描述了实现每一种的努力。首先,研究了Cope重排/分子内Diels-Alder级联反应。其次,由酚氧化诱导的内酯化的阳离子双环化和 A 环氧化断裂设置的生物启发序列,最终提供了一个三环中间体,只需要安装突出的双环 [2.2.2] 辛烷系统的桥环. 这最后的努力充满了困难,但确实导致了相关酮烯烃通过基于锰(III)的自由基化学环化的条件的发展。