Fused heterocyclic ring systems in which a quinoline or a pyridine component is "fused" to a pyrimidine having a 2-methyl, 2-ethyl, or 2-acetyl group and a 4-keto group, and to similar ring systems in which a quinoline, a naphthalene or a pyridine component is "fused" to a pyrimidine having a 2-carboxy group and a 4-keto group, derivatives, and pharmaceutically-acceptable cationic salts thereof, and their use as antiallergy agents, and intermediates therefor.
融合杂环环系统,其中
喹啉或
吡啶成分“融合”到具有2-甲基、2-乙基或2-乙酰基团和4-酮基的
嘧啶上,以及类似的环系统,其中
喹啉、
萘或
吡啶成分“融合”到具有2-羧基和4-酮基的
嘧啶上,其衍
生物和药用可接受的阳离子盐,以及它们作为抗过敏药物的用途,以及其中间体。