2-Anilino-1,6-dihydro-6-oxo-5-pyrimidinecarboxylic acid derivatives of the formula: ##STR1## wherein R.sup.1 and R.sup.2 are the same or different and are each hydrogen, an alkoxy, a tetrahydrofurylalkoxy, an alkyl, an alkoxycarbonyl, a halogen, a dialkylamino, hydroxy, trifluoromethyl, or nitro, and R.sup.3 is hydrogen or an alkyl, or a pharmaceutically acceptable salt thereof, which have excellent anti-allergic activities and are useful, particularly for the prophylaxis and treatment of allergic asthma, and processes for the preparation thereof, and anti-allergic agent containing said compounds as an active ingredient.
该公式的2-
苯胺基-1,6-二
氢-6-
氧-5-
嘧啶羧酸衍
生物为:其中R.sup.1和R.sup.2相同或不同,分别为
氢、烷
氧基、
四氢呋喃基烷
氧基、烷基、烷
氧羰基、卤素、二烷基
氨基、羟基、三
氟甲基或硝基,R.sup.3为
氢或烷基,或其药学上可接受的盐,具有出色的抗过敏活性,特别适用于过敏性哮喘的预防和治疗,并提供其制备方法,以及包含所述化合物作为活性成分的抗过敏剂。