Toward the Development of a General Chiral Auxiliary. A Total Synthesis of (+)-Tetronolide via a Tandem Ketene-Trapping [4 + 2] Cycloaddition Strategy
作者:Robert K. Boeckman,、Pengcheng Shao、Stephen T. Wrobleski、Debra J. Boehmler、Geoffrey R. Heintzelman、Antonio. J. Barbosa
DOI:10.1021/ja0581346
日期:2006.8.1
A highly convergent, enantioselective totalsynthesis of the aglycone of the tetrocarcins, (+)-tetronolide, is described. The synthesis highlights the use of several new methods, including camphor auxiliary-directed asymmetric alkylation and the enantioselective preparation of acyclic mixed acetals bearing chirality at the acetal center, and the highly efficient connection of the two major precursors