[3,3]Sigmatropic ring expansion of cyclic thionocarbonates. 9. total synthesis of (±)-yellow scale pheromone via 10-membered thiolcarbonate
作者:Shinya Harusawa、Shigetaka Takemura、Hirotaka Osaki、Ryuji Yoneda、Takushi Kurihara
DOI:10.1016/s0040-4020(01)87241-0
日期:1993.8
(±)-Yellow scale pheromone 1 has been synthesized via the route illustrated in Scheme 1. The [3,3]sigmatropic ring expansion of 8-membered thionocarbonate 4 exclusively produced the (Z)-10-membered thiolcarbonate 3, which was transformed via three steps to the intermediate 2 with all the necessary carbon atoms for the pheromone. Reductive removal of the SCO moiety in 2 followed by acetylation gave 1.
(±)-黄色费洛蒙1已通过方案1中所示的路线合成。8元硫代碳酸酯4的[3,3]σ环膨胀专门产生了(Z)-10-元硫代碳酸酯3,将其转化通过三个步骤到达中间体2,该中间体2具有信息素的所有必需碳原子。在2中还原性去除SCO部分,然后进行乙酰化,得到1。