Total Synthesis of Tetrahydroisoquinoline-Based Bioactive Natural Products Laudanosine, Romneine, Glaucine, Dicentrine, and Their Unnatural Analogues Isolaudanosine and Isoromneine
作者:Narshinha Argade、Ravi Jangir
DOI:10.1055/s-0036-1588920
日期:——
Abstract Starting from suitably substituted homophthalic acids, total synthesis of titled alkaloids have been demonstrated in very good yields. The obtained natural products laudanosine and romneine were utilized to accomplish synthesis of two isoquinoline-based alkaloids glaucine and dicentrine. Base-induced selective generation of two different types of benzylic carbanions, their coupling reactions
摘要 从适当取代的高邻苯二甲酸开始,已经证明了标题生物碱的全合成,收率很高。利用所获得的天然产物月桂苷和romneine完成两种基于异喹啉的生物碱青霉素和二百灵的合成。碱基诱导的两种不同类型的苄基碳负离子的选择性生成,它们与3,4-二甲氧基苄基甲磺酸酯的偶联反应,区域选择性碘化以及随后的分子内芳基-芳基偶联反应以形成稠合的联芳基体系是重要的步骤。 从适当取代的高邻苯二甲酸开始,已经证明了标题生物碱的全合成,收率很高。利用所获得的天然产物月桂苷和romneine完成两种基于异喹啉的生物碱青霉素和二百灵的合成。碱基诱导的两种不同类型的苄基碳负离子的选择性生成,它们与3,4-二甲氧基苄基甲磺酸酯的偶联反应,区域选择性碘化以及随后的分子内芳基-芳基偶联反应以形成稠合的联芳基体系是重要的步骤。