Synthesis of 5-fluoro-2-methyl-3-(2-trifluoromethyl-1,3,4-thiadiazol-5-yl)-4(3<i>H</i>)-quinazolinone and related compounds with potential antiviral and anticancer activity
作者:Cyril Párkányi、Hui Liang Yuan、Bo H. E. Strömberg、Ariella Evenzahav
DOI:10.1002/jhet.5570290411
日期:1992.7
The synthesis of ten new substituted 1,3,4-thiadiazolyl-4(3H)-quinazolinones 8–11, 13, 17, and 20–23 is reported. Compounds 8–11 were prepared by condensation of 5-fluoro-2-methyl-3,1-benzoxazin-4-one (3) and 5-substituted 2-amino-1,3,4-thiadiazoles 4–7. Compound 13 was obtained by condensation of 5-fluoro-2-methyl-3,1-benzoxazin-4-one (3) with DL-α-amino-ϵ-caprolactam (12). Compound 17 was synthesized
据报道,合成了十个新的1,3,4-噻二唑基-4(3 H)-喹唑啉酮8-11、13、17和20-23。化合物8-11是通过将5-氟-2-甲基-3,1-苯并恶嗪-4-酮(3)与5-取代的2-氨基-1,3,4-噻二唑4-7缩合而制备的。通过将5-氟-2-甲基-3,1-苯并恶嗪-4-酮(3)与DL-α-氨基-ϵ-己内酰胺(12)缩合获得化合物13。通过6-溴-2-甲基-3,1-苯并恶嗪-4-酮(16)和2-氨基-5-叔丁基-1,3,4-噻二唑(5)的缩合来合成化合物17。化合物20-23是通过将5-氯-6,8-二溴-2-甲基-3,1-苯并恶嗪-4-酮(19)与5-取代的2-氨基-1,3,4-噻二唑4-7缩合而获得的,分别。通过将适当的邻氨基苯甲酸1,15和18与乙酸酐(2)回流,以高收率获得了取代的3,1-苯并恶嗪-4-酮3、16和19 。