作者:Christian Steinborn、Raphael E. Wildermuth、David M. Barber、Thomas Magauer
DOI:10.1002/ange.202008158
日期:2020.9.21
AbstractHerein, we describe the first total synthesis of (+)‐cornexistin as well as its 8‐epi‐isomer starting from malic acid. The robust and scalable route features a Nozaki–Hiyama–Kishi reaction, an auxiliary‐controlled syn‐Evans‐aldol reaction, and a highly efficient intramolecular alkylation to form the nine‐membered carbocycle. The delicate maleic anhydride moiety of the nonadride skeleton was
摘要在此,我们描述了 (+)-cornexistin 的首次全合成及其 8-外延层‐从苹果酸开始的异构体。稳健且可扩展的路线以野崎-桧山-贵志反应为特色,这是一种辅助控制的反应顺‐埃文斯羟醛反应,以及高效的分子内烷基化形成九元碳环。nonadride 骨架中精致的马来酸酐部分是由 β-酮腈构建的。所开发的路线能够合成 165 mg (+)-cornexistin。