and six known caged analogues were obtained. Compared with the traditional thermal method, the reaction time was reduced dramatically and the yield was greatly improved under microwave irradiation. In addition, the regioselectivity observed in the cascade reaction has also been rationalised. Garcinia have long been used in folk medicines for their healing, antibacterial, and cytotoxic activities.
微波辅助 Claisen 重排/Diels-Alder 级联反应用于合成笼状藤黄
天然产物和类似物,其中含有独特的 4-oxa-tricyclo[4.3.1.03,7]decan-2-one 支架,来自
呫吨酮和
色酮-基于基材。获得了福布松和
丁酮以及两个新的和六个已知的笼状类似物。与传统的热法相比,在微波照射下反应时间大大缩短,收率大大提高。此外,在级联反应中观察到的区域选择性也得到了合理化。长期以来,藤黄因其愈合、抗菌和细胞毒性活性而被用于民间药物。