Evolution of a Short and Stereocontrolled Synthesis of (+)-7,20-Diisocyanoadociane
作者:Philipp C. Roosen、Alexander S. Karns、Bryan D. Ellis、Christopher D. Vanderwal
DOI:10.1021/acs.joc.1c02700
日期:2022.1.21
account of the development of a concise and highly stereoselective synthesis of (+)-7,20-diisocyanoadociane (DICA)─a structurally complex isocyanoditerpene with potent antiplasmodial activity─is described. The strategy that evolved relies on the rapid construction of unsaturated tricyclic precursors designed to undergo stereocontrolled Birch reductions and a subsequent “bay ring” formation to generate
详细介绍了 (+)-7,20-二异氰基二萜 (DICA)(一种结构复杂的异氰二萜,具有强大的抗疟原虫活性)的简明和高度立体选择性合成的发展。进化的策略依赖于不饱和三环前体的快速构建,这些前体设计用于进行立体控制的 Birch 还原和随后的“湾环”形成以生成异环两性烷核心。本报告分为三个部分:(1) 描述最初的战略和将我们的努力集中在通往 DICA 核心的单一路线上的结果,(2) 讨论实现第一代正式计划所需的精确编排(±)-DICA 的合成,