Oxidative rearrangement of furfuryl alcohols carrying an appropriately positioned dienyl side chain provided hydroxypyranone intermediates that underwent a subsequent intramolecular Diels-Alder reaction. The heterocyclic ring of the tricyclic cycloadducts opened via ring chain tautomerism to highly functionalized decalin or hexahydroindene derivatives, respectively. In one instance, that is compound 6 the structure was secured by X-ray analysis.
带有适当位置二烯基侧链的
糠醇发生氧化重排反应,产生了羟基
吡喃酮中间体,这些中间体随后发生了分子内 Diels-Alder 反应。
三环环加成物的杂环通过环链同分异构作用,分别生成高度官能化的
癸醛衍
生物或六氢
茚衍
生物。其中,化合物 6 的结构是通过 X 射线分析确定的。