Preparation and antiinflammatory activity of 2- and 4-pyridones
作者:James Benjamin Pierce、Zaven S. Ariyan、Gaye Stuart Ovenden
DOI:10.1021/jm00344a008
日期:1982.2
been self-condensed to form pyridones. N-Alkylacetoacetamides give 2-pyridones, while N-arylacetoacetamides give 4-pyridones. In an attempt to develop nonacidic, nonsteroidal antiinflammatory agents, the pyridones were tested in a carrageenan-induced pedal edema assay in rats. While the 2-pyridones were not active, 9 of 17 4-pyridones tested were active, and one compound (4g) had antiinflammatory efficacy
BURMISTROV, S. I.;ROMANOVSKAYA, L. G.;MASHCHENKO, T. YA.;CHUDNENKO, M. L.
作者:BURMISTROV, S. I.、ROMANOVSKAYA, L. G.、MASHCHENKO, T. YA.、CHUDNENKO, M. L.
DOI:——
日期:——
POCl
<sub>3</sub>
‐Mediated Reaction: A New Entry to Polysubstituted 2‐Pyridones
<i>via</i>
Self‐condensation of β‐Keto Amides
作者:Baochang Gao、Yufeng Sun、Jun Wang、Chang Cao、Zhigang Yuan、Yuan Tian、Yu Shi、Wenbin Liu
DOI:10.1002/jhet.3613
日期:2019.8
polysubstituted 2‐pyridones and their analogues from β‐keto amides via self‐condensation cyclization is described. Notable advantages include mild reaction conditions, reduced synthetic steps, high yields, and a readily available starting materials. Further mechanistic studies suggest that the transformation proceeds through self‐condensation, intramolecular nucleophilic cyclization, and elimination