Reactions of 5(4H)-Oxazolones with Wittig-Horner Reagents: Novel Synthesis of Dioxopyrrolidinephosphonates and Phosphonoalkanoates with Anticipated Schistosomicidal Activity
作者:Leila S. Boulosa、Mona H.N. Arsanious、Ewies F. Ewies、Fatem Ramzy
DOI:10.1515/znb-2008-1012
日期:2008.10.1
Abstract 4-Benzylidene-2-phenyl-5(4H)-oxazolones react with Wittig-Horner reagents in the presence of alcoholic sodium alkoxide to give novel dioxopyrrolidinephosphonates, diethyl [3-(benzoylamino)- 1-cyano-2-oxo-4-phenylbut-3-en-1-yl]phosphonate and phosphonoalkenoate derivatives. Both the phosphonate adducts and the ester products were also isolated from the reaction of oxazolones with triethyl phosphonoacetate
摘要 4-Benzylidene-2-phenyl-5(4H)-oxazolones 在醇钠存在下与 Wittig-Horner 试剂反应,得到新型二氧代吡咯烷膦酸酯,[3-(苯甲酰氨基)-1-cyano-2-oxo-4 -苯基丁-3-烯-1-基]膦酸酯和膦酰基链烯酸酯衍生物。使用乙醇钠和/或氢化钠作为碱,从恶唑酮与膦酰基乙酸三乙酯的反应中分离出膦酸酯加合物和酯产物。考虑了可能的反应机制,结构分配基于分析和光谱结果。报道了新化合物的生物学评价。