作者:Younggi Choi、Hayato Ishikawa、Juraj Velcicky、Gregory I. Elliott、Michael M. Miller、Dale L. Boger
DOI:10.1021/ol051975x
日期:2005.9.1
[reaction: see text] Two exceptionally concise total syntheses of (-)- and ent-(+)-vindoline are detailed enlisting a diastereoselective tandem [4 + 2]/[3 + 2] cycloaddition of a 1,3,4-oxadiazole. The unique reaction cascade assembles the fully functionalized pentacyclic ring system of vindoline in a single step that forms four C-C bonds and three rings while introducing all requisite functionality
[反应:见正文]详细列举了(-)-和ent-(+)-vindoline的两种极其简洁的总合成方法,其中包括1,3,4-的非对映选择性串联[4 + 2] / [3 + 2]环加成反应恶二唑。独特的反应级联可在一个步骤中组装长满五环的长环五环系统,形成四个CC键和三个环,同时引入所有必需的功能,并在中心环内设置所有六个立体中心,包括三个连续和四个总四元中心。