Catalytic Asymmetric Assembly of Octahydroindolones: Divergent Synthesis of Lycorine-type Amaryllidaceae Alkaloids (+)-α-Lycorane and (+)-Lycorine
作者:Zhongwen Sun、Mingtao Zhou、Xiang Li、Xueling Meng、Fangzhi Peng、Hongbin Zhang、Zhihui Shao
DOI:10.1002/chem.201400178
日期:2014.5.12
report the first catalytic asymmetric approach to octahydroindolones and a divergent enantioselective synthesis of perhydroindole alkaloids, as exemplified by lycorine‐type Amaryllidaceae alkaloids (+)‐α‐lycorane and (+)‐lycorine, from a common intermediate by using a highly concise route. The assembly of octahydroindolones employs a catalytic enantioselective 1,4‐conjugate addition of nitro dienynes, followed
我们报告了第一个催化八氢吲哚酮的催化不对称方法和全氢吲哚生物碱的对映异构选择性发散合成,例如,使用高度精简的路线,从常见的中间体中,得自lycorine- Amaryllidaceae(+)-α-lycorane和(+)-lycorine生物碱。 。八氢吲哚酮的组装过程是对硝基二烯进行催化对映选择性1,4-共轭加成反应,然后是TsOH催化的高度官能化烯酮的级联合成,以及非对映选择性分子内迈克尔加成反应。