Total Synthesis of (±)-Gephyrotoxin by Amide-Selective Reductive Nucleophilic Addition
作者:Kenji Shirokane、Takamasa Wada、Makoto Yoritate、Ryo Minamikawa、Nobuaki Takayama、Takaaki Sato、Noritaka Chida
DOI:10.1002/anie.201308905
日期:2014.1.7
the total synthesis of (±)‐gephyrotoxin has been developed. The key to success was the utilization of N‐methoxyamides, which enabled the direct coupling of the amide with an aldehyde and selective reductive nucleophilic addition to the amide in the presence of a variety of sensitive and electrophilic functional groups, such as a methyl ester. This chemoselective approach minimized the use of protecting‐group
已开发出一种化学选择性的方法,可以完全合成(±)-地理毒素。成功的关键是利用N-甲氧基酰胺,它可以使酰胺与醛直接偶联,并在存在各种敏感和亲电子官能团(例如甲酯)的情况下,将酰胺选择性还原性亲核加成到酰胺上。这种化学选择性方法最大程度地减少了保护基操纵和氧化还原反应的使用,从而实现了迄今为止描述的最简洁,最有效的(±)-地球毒毒素的全合成。