2-(6-Azauracil-5-yl)benzoic acid (Ib) and its thio analogue Ia give new heterocyclic compounds, 1,2-dihydro-1,2,4-triazino[5,6-c]isocoumarin-3-one (IVb) and analogous 3-thione IVa, respectively, on treatment with N,N'-dicyclohexylcarbodiimide. A series of substituted 1,2,4-triazino[5,6-c]isoquinolines V-XVI have been prepared from these compounds and from other functional derivatives (II, III) of the acids I.
2-(6-氨基尿嘧啶-5-基)苯甲酸(Ib)及其硫代物(Ia)在与N,N'-二环己基碳酰亚胺反应时,分别生成新的杂环化合物1,2-二氢-1,2,4-三氮杂[5,6-c]异香豆素-3-酮(IVb)及其类似的3-硫酮(IVa)。从这些化合物及酸I的其他功能衍生物(II,III)制备了一系列取代的1,2,4-三氮杂[5,6-c]异喹啉(V-XVI)。