An efficient synthesis of anolignan A has been achieved in eight steps in 30% overall yield from piperonal employing TiCl4-mediated addition of a 1-trimethylsilyl-2,3-butadiene to an aldehyde as the key step. (C) 2000 Elsevier Science Ltd. All rights reserved.
Syntheses of Anolignans A and B Using Ruthenium-Catalyzed Cross-Enyne Metathesis
作者:Miwako Mori、Keisuke Tonogaki、Nao Nishiguchi
DOI:10.1021/jo0107913
日期:2002.1.1
Anolignans A and B were synthesized using ruthenium-catalyzed cross-enyne metathesis as the key steps. The 1,3-diene moieties of these natural products were constructed by the introduction of the methylene parts of ethylene into alkyne using Grubbs' catalyst.