synthesized via the Diels-Alder adduct of a furan derivative and maleic anhydride with high regio- and stereoselectivities. The key steps of this work include the regioselective opening of the tetrahydrofuran, stereoselective epoxidation, and AlMe3-mediated regioselective epoxide opening followed by stereoselective C-methylation.
通过
呋喃衍
生物和
马来酸酐的狄尔斯-阿尔德加合物合成了 4,5,6,7-四氢
异苯并呋喃,对应于绿色素的 AC(D)E 环结构并在 A 环上配备了所需的取代基。区域选择性和立体选择性。这项工作的关键步骤包括
四氢呋喃的区域选择性开放、立体选择性环氧化和 AlMe3 介导的区域选择性
环氧化物开放,然后是立体选择性 C-甲基化。