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Liu, Huanhuan; Liu, Huadan; Wang, Enhua; Li, Liangqun; Luo, Zhongsheng; Cao, Jiafu; Chen, Jialin; Yang, Lishou; Yang, Xiaosheng
Molecules (Basel, Switzerland), 03/2023, Letnik: 28, Številka: 5Journal Article
Hydrogen-bonding catalytic reactions have gained great interest. Herein, a hydrogen-bond-assisted three-component tandem reaction for the efficient synthesis of N-alkyl-4-quinolones is described. This novel strategy features the first proof of polyphosphate ester (PPE) as a dual hydrogen-bonding catalyst and the use of readily available starting materials for the preparation of N-alkyl-4-quinolones. The method provides a diversity of N-alkyl-4-quinolones in moderate to good yields. The compound 4h demonstrated good neuroprotective activity against N-methyl-ᴅ-aspartate (NMDA)-induced excitotoxicity in PC12 cells.
