A new expeditious synthesis of the core scaffold of salvianolic acid F trough a one-pot sequential Heck coupling catalyzed by palladium nanoparticles in ionic liquids
A new expeditious synthesis of tetramethyl salvianolic acid F is presented. Starting from the naturally occurring veratrole, the target molecule is easily obtained in a one-pot mode via a sequential double Heck coupling catalyzed by palladium nanoparticles dispersed in ionicliquids. The present method involves the chemoselective displacement of two different halogen atoms present on the veratrole
提出了一种新的四甲基丹酚酸 F 的快速合成方法。从天然存在的藜芦醇开始,通过分散在离子液体中的钯纳米颗粒催化的顺序双 Heck 偶联,可以一锅法轻松获得目标分子。本方法涉及对藜芦环上存在的两种不同卤素原子的化学选择性置换,并限制了繁琐的实验程序的需要。可以实现 66% 的总产量,据我们所知,这是迄今为止文献中最好的结果之一。该协议还可以为合成具有潜在生物活性的非天然类丹酚化合物开辟道路。