作者:Johann Mulzer、Thilo Heckrodt
DOI:10.1055/s-2002-33919
日期:——
synthesis of a precursor 2 for the Elisabethin A skeleton is reported. Containing a masked quinone and a (E,Z)-diene subunit, it has the required elements for the envisaged intramolecular Diels-Alder reaction to form the tricyclic system of Elisabethin A. Starting from methylresorcinol, the sequence involves the preparation of an arylacetic acid, which was α-alkylated by a chiral building block. Subsequent
报道了 Elisabethin A 骨架的前体 2 的合成。它含有一个掩蔽的醌和一个 (E,Z)-二烯亚基,具有所设想的分子内 Diels-Alder 反应所需的元素,以形成 Elisabethin A 的三环系统。从甲基间苯二酚开始,该序列涉及芳基乙酸的制备,它被手性结构单元α-烷基化。随后的 HWE 反应和顺式选择性 Wittig 烯化为二烯提供了所需的几何形状。