作者:Kazumasa Matsuo、Mitsuru Shindo
DOI:10.1016/j.tet.2010.11.108
日期:2011.2
The efficient total synthesis of karrikinolide (KAR1), a potent plant growth regulator discovered in smoke from burning plant material, is described. 3-Hydroxy-4-pyranone, prepared from d-xylose, was subjected to a Cu(II)-catalyzed transesterification–Wittig lactonization to afford the dihydrofuropyran in good yield. Finally, radical bromination, followed by olefin formation, provided KAR1 in acceptable
描述了有效的全合成karrikinolide(KAR 1),这是一种有效的植物生长调节剂,可从燃烧植物材料的烟雾中发现。由D-木糖制得的3-Hydroxy-4-pyranone,经过Cu(II)催化的酯交换反应-Wittig内酯化反应,以高收率得到二氢呋喃喃。最后,自由基溴化,随后形成烯烃,以可接受的产率提供了KAR 1。