The [3,7]‐diazabicyclo[3.3.1]nonane (bispidine) structure is found in several interesting naturally occurring alkaloids as the tetracyclic alkaloid (−)‐sparteine and the tricyclic (−)‐cytisine alkaloids. In this review, we describe the most relevant strategies for the synthesis of molecules.

中文翻译：

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基于[3,7]-二氮杂双环[3.3.1]壬烷（联吡啶）核心的天然化合物的合成

[3,7]-二氮杂双环[3.3.1]壬烷（双吡啶）结构存在于几种有趣的天然生物碱中，如四环生物碱（-）-半胱氨酸和三环（-）-胱氨酸碱。在这篇综述中，我们描述了分子合成的最相关策略。