A Cascade Reaction Consisting of Pictet−Spengler-Type Cyclization and Smiles Rearrangement: Application to the Synthesis of Novel Pyrrole-Fused Dihydropteridines
作者:Jinbao Xiang、Lianyou Zheng、Feng Chen、Qun Dang、Xu Bai
DOI:10.1021/ol0629364
日期:2007.3.1
[reaction: see text] Tandem Pictet-Spengler-type cyclization and Smiles rearrangement have been discovered in the synthesis of pyrimidine-fused heterocycles. The reaction of 4-chloro-5-pyrrol-1-ylpyrimidine amino aldehyde with an amine under an acidic condition yielded the Pictet-Spengler-type cyclization product diazepine, which readily underwent Smiles rearrangement to give a novel pyrrolo[1,2-f]pteridine
[反应:见正文]在嘧啶融合的杂环的合成中发现了串联Pictet-Spengler型环化和Smiles重排。4-氯-5-吡咯-1-基嘧啶氨基醛与胺在酸性条件下反应生成Pictet-Spengler型环化产物二氮杂pine,该二氮杂readily易于进行Smiles重排,得到新型吡咯并[1,2-f ]哌啶衍生物。