作者:Alois Fürstner、Monika Schlede
DOI:10.1002/1615-4169(200208)344:6/7<657::aid-adsc657>3.0.co;2-0
日期:2002.8
A concise synthesis of the ten-membered lactone 26 is described which constitutes the key intermediate of a previous total synthesis of the marine natural product ascidiatrienolide 1 and can also be elaborated into the closely related didemni- lactones 2 ± 4 .T heE/Z-ratio obtained in the ring- closing metathesis (RCM) reaction forging such non- enolide structures is found to be dependent on the relative
描述了十元内酯 26 的简明合成,它构成了海洋天然产物 ascidiatrienolide 1 先前全合成的关键中间体,也可以详细说明为密切相关的二烯内酯 2 ± 4。T heE/Z-发现在锻造这种非烯内酯结构的闭环复分解(RCM)反应中获得的比率取决于环化前体的相对构型以及所选催化剂。具体来说,表明当应用于合成二烯 21 时,钌亚茚络合物 12 和带有 N-杂环卡宾配体的“第二代”Grubbs 型催化剂 13 导致相反的立体化学结果,但与反配置模拟 10.