Total Synthesis of Ileabethoxazole, Pseudopteroxazole, and <i>seco</i>
-Pseudopteroxazole
作者:Ming Yang、Xiaowen Yang、Hongbin Sun、Ang Li
DOI:10.1002/anie.201510568
日期:2016.2.18
The total syntheses of ileabethoxazole, pseudopteroxazole, and seco‐pseudopteroxazole, three antituberculosis diterpenoids that had been isolated from Pseudopterogorgia elisabethae, were accomplished in a collective fashion. A cascade alkyne carbopalladation/Stille reaction was exploited to construct a triene precursor with suitable geometry. A fully substituted arene was then assembled through a key
从艾氏假单胞菌中分离出的三种抗结核性二萜类化合物的总合成量为ileabethoxazole,pseudopteroxoxazole和seco- psedopteroxazole 。利用级联炔烃碳钯/ Stille反应来构建具有合适几何形状的三烯前体。然后通过关键的6π电环化/芳构化序列组装完全取代的芳烃,并用作高级的通用中间体。两种自由基环化分别形成了具有所需立体化学特征的ileabethoxazole和pseudopteroxoxazole的五元环和六元环,并通过简单的侧链延伸传递了seco - pseudopteroxazole。