Concise Total Synthesis of Lundurines A-C Enabled by Gold Catalysis and a Homodienyl Retro-Ene/Ene Isomerization

被引:85
|
作者
Kirillova, Mariia S. [1 ]
Muratore, Michael E. [1 ]
Dorel, Ruth [1 ]
Echavarren, Antonio M. [1 ,2 ]
机构
[1] Barcelona Inst Sci & Technol, Inst Chem Res Catalonia ICIQ, Av Paisos Catalans 16, Tarragona 43007, Spain
[2] Univ Rovira & Virgili, Dept Quim Organ & Analit, C Marcelli Domingo S-N, E-43007 Tarragona, Spain
基金
欧洲研究理事会;
关键词
REVERSE ENE REACTION; INDOLE ALKALOIDS; STEREOGENICITY TRANSFER; HYDROGEN SHIFT; KOPSIA-TENUIS; (+/-)-LUNDURINE; STEREOCHEMISTRY; REARRANGEMENTS; (-)-LUNDURINE; STRATEGY;
D O I
10.1021/jacs.6b01428
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The total synthesis of lundurines A-C has been accomplished in racemic and enantiopure forms in 11-13 and 12-14 steps, respectively, without protection/deprotection of functional groups, by a novel tandem double condensation/Claisen rearrangement, a gold(I)-catalyzed alkyne hydroarylation, a cyclopropanation-via formal [3 + 2] cycloaddition/nitrogen extrusion, and a remarkable olefin migration through a vinylcyclopropane retro-ene/ene reaction that streamlines the endgame.
引用
收藏
页码:3671 / 3674
页数:4
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