Application of the Intramolecular Yamamoto Vinylogous Aldol Reaction to the Synthesis of Macrolides
作者:Joseph A. Abramite、Tarek Sammakia
DOI:10.1021/ol0704901
日期:2007.5.1
An intramolecular version of the Yamamoto vinylogous aldol reaction, a method that employs the bulky Lewis acid ATPH to control the site of aldolization, is described. This macrocyclization process is effective for the construction of 10-, 12-, and 14-membered macrolides. The yields are high (70-90%), and the reaction can proceed with excellent remote stereocontrol (dr > or = 20:1) with chiral substrates
描述了分子内版本的山本乙烯基醇醛缩醛反应,该方法利用大的路易斯酸ATPH来控制醛醇缩合的位点。该大环化过程对于构建10元,12元和14元大环内酯类是有效的。产率高(70-90%),并且反应可以在具有手性底物的优异的远程立体控制(dr>或= 20∶1)下进行。