A concise sequence utilizing a Petasis three component reaction followed by a tandem aza-Cope–Mannich cyclization afforded novel polycyclic heterocycles in good yield; alternative iminium cyclization based on a Pictet–Spengler reaction or aminal formation led to divergent pathways affording skeletal diversity.
通过Petasis三组分反应与随后的aza-Cope-Mannich串联环化反应,简洁地合成了产率良好的新型多环
杂环化合物;基于Pictet-Spengler反应或
氨基醛缩合的
亚胺环化提供了不同的途径,导致了骨架多样性。