Toward the development of a general chiral auxiliary. A total synthesis of (+)-tetronolide via a tandem ketene-trapping [4+2] cycloaddition strategy

被引:45
作者
Boeckman, Robert K., Jr. [1 ]
Shao, Pengcheng [1 ]
Wrobleski, Stephen T. [1 ]
Boehmler, Debra J. [1 ]
Heintzelman, Geoffrey R. [1 ]
Barbosa, Antonio. J. [1 ]
机构
[1] Univ Rochester, Dept Chem, Rochester, NY 14627 USA
关键词
D O I
10.1021/ja0581346
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
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 via a ketene-trapping/ intramolecular [ 4 + 2] cycloaddition strategy.
引用
收藏
页码:10572 / 10588
页数:17
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