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: Synthesis of the Northern and Southern Fragments
作者:Barry M. Trost、W. Michael Seganish、Cheol K. Chung、Dominique Amans
DOI:10.1002/chem.201102898
日期:2012.3.5
migration led to the development of an alternative route based on an asymmetric dinuclear Zn‐catalyzed aldol reaction of a hydroxyl acylpyrrole. This key reaction led to the desired diol adduct 66 with excellent syn/anti selectivity (10:1), and allowed for the successful completion of the northern fragment 7. The key step for the synthesis of the southern fragment was a chemoselective Rh‐catalyzed cycloisomerization