Organocatalytic Michael Addition of Malonates to Isatylidene-3-acetaldehydes: Application to the Total Synthesis of (−)-Debromoflustramine E
作者:Renrong Liu、Junliang Zhang
DOI:10.1002/chem.201300977
日期:2013.6.3
Flustering oxindoles: An enantioselective synthesis of 3,3′‐disubstituted oxindoles by conjugate addition of malonates to isatylidene‐3‐acetaldehydes in high yield and enantioselectivity is developed (see scheme). The synthetic utility of this reaction is demonstrated by the synthesis of three oxindole core structures and the asymmetric total synthesis of debromoflustramine E.
酯化的吲哚:通过高收率和对映选择性,将丙二酸酯共轭加成到亚苄基-3-乙醛上,开发了3,3'-二取代的羟吲哚的对映选择性合成。该反应的合成效用通过三个羟吲哚核心结构的合成和十溴氟stramine E的不对称全合成得到了证明。