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 total synthesis 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
描述了 tetrocarcins 的苷元 (+)-tetronolide 的高度收敛、对映选择性全合成。该合成强调了几种新方法的使用,包括樟脑辅助导向的不对称烷基化和在缩醛中心具有手性的无环混合缩醛的对映选择性制备,以及两种主要前体通过乙烯酮捕获/分子内的高效连接。 4 + 2] 环加成策略。