Stereocontrolled Synthesis of Adjacent Acyclic Quaternary-Tertiary Motifs: Application to a Concise Total Synthesis of (−)-Filiformin
作者:Daniel J. Blair、Catherine J. Fletcher、Katherine M. P. Wheelhouse、Varinder K. Aggarwal
DOI:10.1002/anie.201400944
日期:2014.5.26
developed for the synthesis of acyclic quaternary‐tertiary motifs with full control of relative and absolute stereochemistry, thus leading to all four possible isomers of a stereodiad. A novel intramolecular Zweifel‐type olefination enabled acyclic stereocontrol to be transformed into cyclic stereocontrol. These key steps have been applied to the shortest enantioselective synthesis of (−)‐filiformin
已经开发了锂化/硼氢化方法学,用于合成无环四级-三级基序,并且可以完全控制相对和绝对立体化学,因此可以生成立体二价体的所有四种可能的异构体。新型的分子内Zweifel型烯化反应使无环立体控制转变为环立体控制。迄今为止,这些关键步骤已应用于具有完全立体控制的最短对映选择性合成(-)-filiformin(9个步骤)。