The stereoselective synthesis of <i>cis</i>- and <i>trans</i>-fused pyrrolidine containing bicyclic azepine and oxepine derivatives using aza-Cope rearrangement-Mannich cyclization as a key step
作者:Evgeny R. Lukyanenko、Grigory M. Belov、Anton M. Novoselov、Mikhail S. Nechaev、Alexander V. Kurkin
DOI:10.1039/d2nj03936b
日期:——
and strategies for the formation of fused five-, six-, and seven-membered ring structures is of utmost importance in organic syntheses. The present study describes the investigation of a [3,3]-sigmatropic rearrangement to construct new cis- and trans-fused heterocyclic compounds, such as decahydropyrrolo[2,3-c]azepines, octahydro-1H-oxepino[4,5-b]pyrroles, and decahydropyrrolo[2,3-d]azepines, using the
开发形成稠合五、六和七元环结构的新方法和策略在有机合成中至关重要。本研究描述了研究 [3,3]-sigmatropic 重排以构建新的顺式和反式稠合杂环化合物,例如十氢吡咯并[2,3 - c ] 氮杂环庚烷、八氢-1 H - oxepino[4,5 - b ]pyrroles 和 decahydropyrrolo [2,3- d ]azepines,使用 aza-Cope-Mannich 反应。3-氨基-4-乙烯基四氢-2 H的[3,3]-σ重排的研究-pyran-4-ol、3-amino-4-vinylpiperidin-4-ol 和 4-amino-3-vinylpiperidin-3-ol 衍生物表明该过程以高产率和非对映选择性进行。环化过程的立体选择性可以通过检查反式氨基醇起始材料的低能构象来合理化。这些结果证明了 aza-Cope-Mannich 反应在产生顺式和反式中的效率和潜