作者:Luisruben P. Martinez、Shigenobu Umemiya、Sarah E. Wengryniuk、Phil S. Baran
DOI:10.1021/jacs.6b04816
日期:2016.6.22
The structurally intriguing terpenes pallambins C and D have been assembled in only 11 steps from a cheap commodity chemical: furfuryl alcohol. This synthesis, which features a redox-economic approach free of protecting-group manipulations, assembles all four-ring systems via a sequential cyclization strategy. Of these four-ring constructing operations, two are classical (Robinson annulation and Mukaiyama
有趣的萜烯pallambins C和D从廉价的商品化学品糠醇仅用11个步骤就组装完成。这种合成具有无需保护基团操纵的氧化还原经济方法,可通过顺序环化策略组装所有四环系统。在这些四环构造操作中,有两个是经典的(鲁宾逊环空法和Mukaiyamayama aldol),另外两个是新设计的。在这项工作的过程中,开发了烯醇醚双官能化的方法,并探讨了这种转化的范围。