Asymmetric Synthesis of 3-Amino-δ-lactams and Benzo[<i>a</i>]quinolizidines by Catalytic Cyclization Reactions Involving Azlactones
作者:Jun Jiang、Jian Qing、Liu-Zhu Gong
DOI:10.1002/chem.200900814
日期:2009.7.20
three‐component formal [4+2] cycloaddition reaction of azlactones, cinnamaldehydes, and primary amines using phosphoric acid as the catalyst provides access to nitrogenous structural motifs (see scheme), which are found in numerous natural and unnatural products that exhibit important biological activities, such as 3‐amino‐3,4‐dihydropyridinones, benzo[a]quinolizidines, 3‐amino‐δ‐lactams, and 3‐aminopiperidinones
氮杂内酯,肉桂醛和伯胺的三组分形式[4 + 2]环加成反应,使用磷酸作为催化剂,可提供含氮结构基序(请参见方案),这在许多展示重要生物学功能的天然和非天然产物中都可以找到活性,例如3-氨基-3,4-二氢吡啶酮,苯并[ a ]喹啉嗪,3-氨基δ-内酰胺和3-氨基哌啶酮。