Asymmetric total synthesis of (-)-panacene and correction of its relative configuration

被引:59
作者
Boukouvalas, John [1 ]
Pouliot, Martin
Robichaud, Joel
MacNeil, Stephen
Snieckus, Victor
机构
[1] Univ Laval, Dept Chim, Quebec City, PQ G1K 7P4, Canada
[2] Queens Univ, Dept Chem, Kingston, ON K7L 3N6, Canada
关键词
D O I
10.1021/ol061385e
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
The first synthesis of (-)-panacene has been accomplished in concise, highly stereoselective fashion from commercially available 2-methoxy6-methylbenzoic acid (15 steps, 8.3% overall yield). The synthesis unambiguously establishes the correct relative and absolute configuration of panacene, and demonstrates the serviceability of Pd(II)-mediated tandem intramolecular alkoxycarbonylation-lactonization for the expedient assembly of its tricyclic core, and the dual role of asymmetric alkynylation as an initial source of chirality and as a powerful tool for manipulating diastereoselectivity.
引用
收藏
页码:3597 / 3599
页数:3
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