A bioinspired, one-step total synthesis of peshawaraquinone

被引:4
|
作者
de Castro, Tomas Vieira [1 ,2 ]
Huang, David M. M. [1 ]
Sumby, Christopher J. J. [1 ]
Lawrence, Andrew L. L. [2 ]
George, Jonathan H. H. [1 ]
机构
[1] Univ Adelaide, Dept Chem, Adelaide, SA 5000, Australia
[2] Univ Edinburgh, EaStCHEM Sch Chem, Joseph Black Bldg,David Brewster Rd, Edinburgh EH9 3FJ, Scotland
基金
澳大利亚研究理事会;
关键词
ACID;
D O I
10.1039/d2sc05377b
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A concise synthesis of a stereochemically complex meroterpenoid, peshawaraquinone, via the unsymmetrical dimerization of its achiral precursor, dehydro-alpha-lapachone, is reported. Enabled by reversible oxa-6 pi-electrocyclizations of 2H-pyran intermediates, the base-catalyzed dimerization sets up an intramolecular (3 + 2) cycloaddition, with the formation of six stereocenters during the cascade. Combining the generation and in situ dimerization of dehydro-alpha-lapachone allows a one-step total synthesis of peshawaraquinone from lawsone and prenal.
引用
收藏
页码:950 / 954
页数:5
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