Homogenous palladium catalyzed intramolecular hydroarylation of appropiately functionalized ortho-iodophenoxyfuranones afforded ABC substructures of AFM1 and austocystine. The o,o′-diiodine effect, coupled with an appropiate urethane tether, allowed regio-controlled annulations.
均相
钯催化适当官能化的邻
碘苯氧基
呋喃酮的分子内氢芳基化反应提供了A
FM 1和Austocystine的ABC亚结构。o,o'-二
碘的作用,加上适当的
氨基甲酸酯系链,可实现区域控制的环行。