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
吡啶组分与具有
2-甲基、2-乙基或2-
乙酰基和4-
酮基的
嘧啶“融合”,以及类似的环系统,其中
喹啉、
萘或
吡啶组分与具有2-羧基和4-
酮基的
嘧啶“融合”,其衍
生物和药学上可接受的阳离子盐以及它们作为抗过敏剂的用途,以及其
中间体。