and a ring-closing metathesis for the construction of the piperidine ring. As a result, the total synthesis of (±)-leuconodine E (2) was achieved for the first time within a 10-step linear sequence, and a more concise total synthesis of (±)-leuconodine D (1) was accomplished within a 12-step linear sequence from the commercially available tryptophol.
开发了短合成(±)-leuconodines D和E的新合成路线。diaza [5.5.6.6] fenestrane核的快速构建是通过一个序列进行的,该序列涉及Pd催化的需氧氧化Heck交叉偶联反应,用于构建包含全碳四元中心的
吲哚δ-内酰胺,环氧化环化反应。
吡咯并
吲哚的组装,以及用于
哌啶环构建的闭环易位。结果,在10步线性序列中首次实现了(±)-亮
氨酸二烯E(2)的总合成,而在(10)线性序列中更简洁地实现了(±)-亮
氨酸二烯D(1)的总合成。来自市售的三
苯酚的12步线性序列。