Imine Additions of Internal Alkynes for the Synthesis of Trisubstituted (E)-Alkene and Cyclopropane Peptide Isosteres
作者:Peter Wipf、Jingbo Xiao、Steven J. Geib
DOI:10.1002/adsc.200505171
日期:2005.10
in structural diversity and allow the rapid assembly of complex products from readily available starting materials. Cascade hydrozirconation-Zr/Zn transmetalation-imine addition of alkynes represents a versatile methodology for the synthesis of (E)-alkene and cyclopropane dipeptide isosteres. Appropriate substitutions at the sp2-carbon of (E)-alkene peptide isosteres allow a range of Pd-catalyzed cross-coupling
涉及CC键形成的发散多组分反应(DMCR)可以大大增加结构多样性,并允许从容易获得的起始原料快速组装复杂的产品。级联加氢锆化-Zr / Zn过渡金属化-亚胺的炔烃代表了合成(E)-烯烃和环丙烷二肽等排体的通用方法。(E的sp 2-碳原子处的适当取代α-烯烃肽等排物允许一系列Pd催化的交叉偶联反应,可用于微调亲本肽键模拟物的构象和电子性质。通过微波加速的苯乙烯基烯烃的Stille偶联形成CC键代表了针对三取代(E)-烯烃二肽等排体的快速收敛的合成方法。