Evaluating Transition-Metal-Catalyzed Transformations for the Synthesis of Laulimalide
作者:Barry M. Trost、Dominique Amans、W. Michael Seganish、Cheol K. Chung
DOI:10.1021/ja907924j
日期:2009.12.2
and the epothilones. The use of atom-economical transformations such as a Rh-catalyzed cycloisomerization to form the endocyclic dihydropyran, a dinuclear Zn-catalyzed asymmetric glycolate aldol reaction to prepare the syn 1,2-diol, and an intramolecular Ru-catalyzed alkene-alkyne coupling to build the macrocycle enabled us to synthesize laulimalide via an efficient and convergent pathway. The designed
Total Synthesis of Laulimalide: Assembly of the Fragments and Completion of the Synthesis of the Natural Product and a Potent Analogue
作者:Barry M. Trost、Dominique Amans、W. Michael Seganish、Cheol K. Chung
DOI:10.1002/chem.201102899
日期:2012.3.5
Herein, we present a full account of our efforts to couple the northern and the southern building blocks, the synthesis of which were described in the preceding paper, along with the modifications required to ultimately lead to a successful synthesis of laulimalide. Key highlights include an exceptionally efficient and atom‐economical intramolecular ruthenium‐catalyzed alkene–alkyne coupling to build