subunits of bryostatins. A Ru‐catalyzed tandem alkene–alkyne coupling/Michael addition reaction was developed and applied to the synthesis of bryostatin ring B. We explored an acetylide‐mediated epoxide‐opening/6‐exo‐dig cyclization route to access the bryostatin ring A, although ring A was eventually furnished through an acid‐catalyzed tandem transketalization/ketalization sequence. In addition, a dinuclear
本文描述了苔藓
抑素环 A 和 B 亚基立体选择性组装的
化学选择性和原子经济方法。
钌催化的串联烯烃-炔耦合/迈克尔加成反应的开发和应用到苔藓
抑素环B的合成我们探讨
乙炔化介导的
环氧化物的开/ 6-外型-挖环化路径访问的苔藓
抑素环A,虽然环 A 最终通过酸催化的串联转
缩酮/
缩酮化序列提供。此外,还评估了双核
锌催化甲基
乙烯基酮(MVK)羟醛策略用于构建聚
乙酸酯部分。这些方法的使用最终导致了包含环 A 和 B 亚基的北部苔藓
抑素片段的快速组装。