Total Syntheses of Hyperforin and Papuaforins A-C, and Formal Synthesis of Nemorosone through a Gold(I)-Catalyzed Carbocyclization
作者:Gabriel Bellavance、Louis Barriault
DOI:10.1002/anie.201403939
日期:2014.6.23
chemists over the last decade. The concise total syntheses of four natural products PPAPs; hyperforin and papuaforins A–C, and the formal synthesis of nemorosone are reported. Key to the realization of this strategy is the short and scalable synthesis of densely substituted PPAP scaffolds through a gold(I)‐catalyzed 6‐endo‐dig carbocyclization of cyclic enol ethers for late‐stage functionalization.
在过去的十年中,聚异戊二烯基化的多环酰基间苯三酚(PPAP)的出色的生物活性及其高度修饰的双环[3.3.1]壬烷-2,4,9-三酮构架激发了合成有机化学家的灵感。四种天然产物PPAP的简明总合成;据报道,Hyperforin和papuaforins A–C,以及正式的nemorosone合成。键实现这一策略是通过金密集取代PPAP支架的短且可扩展的合成(I) -催化的6 -内切挖环状烯醇醚为晚期官能化carbocyclization。