作者:Thomas P. Brady、Sun Hee Kim、Ke Wen、Charles Kim、Emmanuel A. Theodorakis
DOI:10.1002/chem.200500513
日期:2005.12.9
A stereoselective synthesis of (+)-norrisolide is presented. This natural product belongs to a family of marine spongiane diterpenes the structure of which is characterized by a fused gamma-lactone-gamma-lactol ring system attached to a bicyclic hydrophobic core. Our studies led to the development of a expedient synthesis of such gamma-lactone-gamma-lactol motifs based on ring expansion of a fused
提出了立体立体合成(+)-去甲立体异构体。该天然产物属于海洋海绵双萜类,其结构的特征是与双环疏水核相连的稠合γ-内酯-γ-内酯环系统。我们的研究导致了基于稠合的环丙基酯的扩环,方便地合成此类γ-内酯-γ-内酯基序的研究。合成诺里固的策略的重点包括通过构建空间要求的C9-C10键来偶联两个双环系统,以及在合成的最后一步通过Baeyer-Villiger氧化法安装C19氧。