申请人:Beecham Group Limited
公开号:US04263309A1
公开(公告)日:1981-04-21
Compounds of formula (I): ##STR1## and pharmaceutically acceptable salts thereof wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 which may be the same or different, represent hydrogen, halogen, nitro, lower alkyl, or lower alkoxy, or any adjacent two of R.sub.1 to R.sub.4 taken together represent an alkylene group containing from 3 to 5 carbon atoms or a 1,4-buta-1,3-dienylene group are disclosed together with a method for their preparation. The compounds are useful as anti-allergic agents. With the exception of 4,9-dioxo-1H-naphtho-[2,3-d]-triazole, and its salts, all compounds of formula (I) are novel.
化合物的公式(I):##STR1##及其药用可接受的盐,其中R.sub.1、R.sub.2、R.sub.3和R.sub.4可以相同也可以不同,代表氢、卤素、硝基、低烷基或低烷氧基,或R.sub.1到R.sub.4中的任意相邻两个一起代表含有3至5个碳原子的亚烷基基团或1,4-丁二烯基团,还公开了它们的制备方法。这些化合物可用作抗过敏剂。除了4,9-二氧代-1H-萘并-[2,3-d]-三唑烯和其盐之外,所有公式(I)的化合物都是新颖的。