Intramolecular [2+2] photocycloadditions as an approach towards the bicyclo[2.1.1]hexane substructure of solanoeclepin A
作者:Richard H. Blaauw、Jean-François Brière、Remco de Jong、Jorg C. J. Benningshof、Angeline E. van Ginkel、Floris P. J. T. Rutjes、Jan Fraanje、Kees Goubitz、Henk Schenk、Henk Hiemstra
DOI:10.1039/b003755i
日期:——
The synthesis of a tricyclic substructure of solanoeclepin A is described. The key step involves an intramolecular [2+2] photocycloaddition between a dioxinone and a tetrasubstituted bicyclic alkene providing the strained bicyclo[2.1.1]hexane moiety.
描述了 solanoeclepin A 的三环亚结构的合成。关键步骤涉及二恶英酮和四取代双环烯烃之间的分子内 [2+2] 光环加成反应,从而提供应变的双环 [2.1.1] 己烷部分。
Intramolecular Photochemical Dioxenone−Alkene [2 + 2] Cycloadditions as an Approach to the Bicyclo[2.1.1]hexane Moiety of Solanoeclepin A
作者:Richard H. Blaauw、Jean-François Brière、Remco de Jong、Jorg C. J. Benningshof、Angeline E. van Ginkel、Jan Fraanje、Kees Goubitz、Henk Schenk、Floris P. J. T. Rutjes、Henk Hiemstra
DOI:10.1021/jo0056500
日期:2001.1.1
solanoeclepin A (1), the most active natural hatching agent of potato cyst nematodes, was approachedvia an intramolecular [2 + 2] photocycloaddition. Aldehyde 12 containing the dioxenone chromophore served as a useful starting material, allowing the synthesis of a variety of photocycloaddition substrates via Grignard addition or via a Nozaki-Hiyama-Kishi reaction. Photolysis of the unsubstituted alkene 14 led