A“Chiral Aldehyde” Equivalent as a Building Block Towards Biologically Active Targets
作者:Barry M. Trost、Matthew L. Crawley
DOI:10.1002/chem.200305634
日期:2004.5.3
by the Bayer corporation. These studies further inspired work that culminated in the total synthesis of (+)-brefeldin A, a natural product with a range of significant biological properties. All of the stereochemistry in this target molecule was derived from two palladium-catalyzedasymmetricallylicalkylation reactions. The trans-alkenes were synthesized by a Julia olefination and a ruthenium-catalyzed
4-Aryloxybutenolides As “Chiral Aldehyde” Equivalents: An Efficient Enantioselective Synthesis of (+)-Brefeldin A
作者:Barry M. Trost、Matthew L. Crawley
DOI:10.1021/ja026438b
日期:2002.8.1
cycloadditions to the double bond. Notably, the cycloadditions of trimethylenemethanepalladium intermediates which do not exhibit good diastereoselectivity in additions to acceptors that possess many common and important chiral auxiliaries undergo cycloadditions with excellent regio- and stereocontrol. The utility of this process set the stage for an efficient new synthesis of (+)-brefeldin A, a compound