framework was serendipitously obtained in a single transformation via triple-dearomative photocycloaddition of chromone esters with furans. This caged structure was generated as part of an effort to access a tricyclic, oxygen-bridged intermediate enroute to the dihydroxanthone natural product nidulalin A. Reaction scope and limitations were thoroughly investigated, revealing the ability to access a multitude
通过
色酮酯与
呋喃的三重脱芳光环加成,在一次转化中偶然获得了前所未有的笼状2H-苯并二氧代五
环十一烷骨架。这种笼状结构的产生是为了在二氢
氧杂蒽酮天然产物 nidulalin A 的途中获得
三环氧桥中间体。对反应范围和限制进行了彻底研究,揭示了在合成过程中获得多种具有合成挑战性的笼状支架的能力。两步序列。光物理研究为新型笼式支架的形成过程提供了关键的机制见解。