作者:David A. Evans、W. Cameron Black
DOI:10.1021/ja00064a011
日期:1993.6
The first synthesis of the macrolide insecticide A83543A (lepicidin A) has been completed using a Diels-Alder strategy to construct the carbocyclic framework. Diene synthesis through Pd-catalyzed Stille coupling of a macrocyclic vinylstannane and suitably functionalized vinyl iodide was followed by a diastereoselective Lewis acid-mediated intramolecular Diels-Alder reaction to construct the trans hydrindene
大环内酯类杀虫剂 A83543A(lepicidin A)的首次合成已使用 Diels-Alder 策略构建碳环框架完成。通过大环乙烯基锡烷和适当官能化的乙烯基碘的 Pd 催化 Stille 偶联合成二烯,然后是非对映选择性路易斯酸介导的分子内 Diels-Alder 反应以构建反式茚亚基。再官能化和分子内醛醇缩合提供了差异保护的 (+)-lepicidin A 苷元。2,3,4-三-O-甲基-D-鼠李糖和N-保护的L-甲胺的连续糖苷化,然后去保护和甲基化,完成了天然产物对映体的合成