An expeditious stereoselective synthesis of natural (−)-Cassine via cascade HWE [3 + 2]-cycloaddition process
作者:Claus Herdeis、Patrick Küpper、Sophie Plé
DOI:10.1039/b516888k
日期:——
L-Rhamnose is transformed to (â)-Cassine via a remarkable four step one pot reaction. The HornerâWadsworthâEmmons [3 + 2]-1,3-dipolar cycloaddition reaction cascade is the pivotal step in this reaction sequence and makes the synthesis highly efficient.
L-鼠李糖通过一个显著的四步骤一锅法反应转化为(‑)-蛇根碱。在这个反应序列中,Horner-Wadsworth-Emmons [3 + 2]-1,3-偶极环加成反应级联是关键步骤,使得合成过程非常高效。