A Biomimetic Route for Construction of the [4+2] and [3+2] Core Skeletons of Dimeric Pyrrole–Imidazole Alkaloids and Asymmetric Synthesis of Ageliferins
作者:Xiao Wang、Xiaolei Wang、Xianghui Tan、Jianming Lu、Kevin W. Cormier、Zhiqiang Ma、Chuo Chen
DOI:10.1021/ja309172t
日期:2012.11.14
The pyrrole-imidazole alkaloids have fascinated chemists for decades because of their unique structures. The high nitrogen and halogen contents and the densely functionalized skeletons make their laboratory synthesis challenging. We describe herein an oxidative method for accessing the core skeletons of two classes of pyrrole-imidazole dimers. This synthetic strategy was inspired by the putative biosynthesis
几十年来,吡咯-咪唑生物碱因其独特的结构而令化学家着迷。高氮和卤素含量以及密集功能化的骨架使其实验室合成具有挑战性。我们在此描述了一种用于访问两类吡咯-咪唑二聚体的核心骨架的氧化方法。这种合成策略受到假定的生物合成途径的启发,其发展得到了计算研究的促进。使用这种方法,我们已成功制备了天然对映体形式的ageliferin、bromoageliferin 和dibromoageliferin。