石蒜碱的不对称全合成研究进展

Research progress on the asymmetric total synthesis of lycorine

  • 摘要: 石蒜碱是石蒜科植物中的一种生物碱,具有抗肿瘤、抗炎、抗病毒等多种药理活性,其结构骨架为四环并和的加兰他烷环,且含有连续4个手性中心. 合成石蒜碱的关键在于环己烷骨架中芳环的选择性引入、含氮双环的高效构建、四取代环己烷的立体控制性合成以及双键的引入. 因此,药物化学和有机化学工作者们致力于开发更便捷、高效的合成方法,以合成具有石蒜碱骨架的多种生物碱为目标,为结构多样性导向的药物研发提供重要物质基础. 该论文综述了2000年以来石蒜碱的不对称全合成研究的新进展,发现已有5个团队开发了不同的合成路线,且各有优势,他们运用了经典的Michael加成反应或Diels-Alder反应,合成总产率均有提高,体现了不同合成策略在复杂天然产物石蒜碱合成中的创造性,在有机化学领域和药物化学领域中均具有重要意义.

     

    Abstract: Lycorine is an alkaloid in the amaryllidaceae family, with multiple pharmacological activities such as anti-tumor, anti-inflammatory, and antiviral activity. Its structural skeleton is a tetracyclic galanthane ring bearing four consecutive chiral centers. The keys to the successful synthesis of lycorine lies in the selective introduction of aromatic rings into the cyclohexane skeleton, the efficient construction of nitrogen-containing bicyclic rings, the stereo-controlled synthesis of tetrasubstituted cyclohexanes, and the construction of double bonds. Therefore, in order to synthesize a variety of alkaloids with a lycorine skeleton, medicinal chemists and organic chemists are committed to developing more convenient and efficient synthetic methods, providing important fundamentals for structural diversity-oriented drug development. This review summarized the new progress in the asymmetric total synthesis of lycorine since 2000, in which five teams have developed different synthetic routes and each have their own advantages. They used the classic Michael addition reaction or Diels-Alder reaction, and the overall yield of the synthesis was improved, which reflects the creativity of different synthetic strategies in the synthesis of the complex natural product lycorine and is of great significance in the fields of organic chemistry and medicinal chemistry.

     

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