Diels–Alder cycloaddition of o-quinonedimethides and alkylidene-5H-furan-2-ones: new and rapid access to lambertellol cores and arthrinone derivatives
作者:Romain Blanc、Virginie Héran、Raphaël Rahmani、Laurent Commeiras、Jean-Luc Parrain
DOI:10.1039/c0ob00448k
日期:——
An efficient synthesis of deoxy-lambertellols was reported through a highly chemo- and diastereoselective intermolecular Diels–Alder cycloaddition between trans-1,2-disiloxybenzocyclobutenes and 2-methylprotoanemonine. Such transformation with δ-substituted γ-alkylidenebutenolides, to prepare new analogues of these tricyclic spirolactones, which would be very difficult to prepare by other ways, was
通过高化学和非对映选择性分子间Diels-Alder环加成反式-1,2-二甲氧基苯并环丁烯与2-甲基protoanemonine。还研究了用δ-取代的γ-亚烷基丁烯内酯进行的这种转化,以制备这些三环螺内酯的新类似物,而用其他方法很难制备这些类似物。