Approach to the Eleutherobin Core: Synthesis of a Key Intermediate by Intramolecular Diels-Alder Cycloaddition
作者:Jacques Royer、Hélène Bruyère、Catarina Dos Reis、Simona Samaritani、Stéphanie Ballereau
DOI:10.1055/s-2006-926456
日期:2006.5
the total synthesis of the eleutherobin core has been obtained. Both syn and anti aldol diastereoisomers were synthesized by two different diastereoselective reaction sequences from 5-methyl-4-(pyrrolydin-l'-yl)-5H-furan-2-one. Each diastereoisomer was esterified and subjected to an intramolecular Diels-Alder reaction, which led to an intermediate that possesses rings A and C of the eleutherobin skeleton
获得了全合成五色菊素核心的有吸引力的中间体。通过从 5-甲基-4-(pyrrolydin-l'-yl)-5H-furan-2-one 的两个不同的非对映选择性反应序列合成顺式和反羟醛非对映异构体。将每种非对映异构体酯化并进行分子内 Diels-Alder 反应,从而产生具有刺五加素骨架环 A 和 C 的中间体。