(-)-hamigeran B has been achieved, based on a new approach to cyclopentane construction, the rhodium-mediated intramolecular C-H insertion of alpha-aryl-alpha-diazoketones. The endo-isopropyl group was installed by selective hydrogenation of a cyclopropylidenesubstituent.
(-)-hamigeran B 的合成已经实现,基于一种新的环戊烷构造方法,即铑介导的 α-芳基-α-重氮酮的分子内 CH 插入。通过环亚丙基取代基的选择性氢化来安装内异丙基。