Efficient Regioselective Synthesis and Potential Antitumor Evaluation of Isoxazolo[5,4-<i>b</i>]pyridines and Related Annulated Compounds
作者:Wafaa S. Hamama、Mona E. Ibrahim、Hanafi H. Zoorob
DOI:10.1002/ardp.201100258
日期:2012.6
the corresponding isoxazolo[5,4‐b]pyridines. Treatment of 1 with 2,6‐dibenzylidenecyclohexanone or 2‐benzylidenedimedone afforded the corresponding isoxazolo[5,4‐b]quinoline derivatives. 4,6,8,9‐Tetrahydroisoxazolo[5,4‐b]quinolin‐5‐one derivative was also obtained by multicomponent condensation reaction of 1 with dimedone and benzaldehyde. Heterocyclic annulation of the isoxazolo[5,4‐b]pyridine system
5-氨基-3-甲基异恶唑与适当的α,β-不饱和酮反应得到相应的异恶唑并[5,4-b]吡啶。用 2,6-二亚苄基环己酮或 2-亚苄基二甲酮处理 1 得到相应的异恶唑并 [5,4-b] 喹啉衍生物。4,6,8,9-四氢异恶唑并[5,4-b]喹啉-5-酮衍生物还通过1与二甲酮和苯甲醛的多组分缩合反应获得。异恶唑并[5,4-b]吡啶体系的杂环环化是通过1与茚满二酮、奎宁酮、吡唑酮和恶唑酮的亚苄基衍生物反应实现的。一些新合成化合物的代表被评估为抗肿瘤剂。