申请人:Boehringer Ingelheim Pharmaceuticals, Inc.
公开号:US04788198A1
公开(公告)日:1988-11-29
Compounds of the formula ##STR1## R.sub.1 is hydrogen or alkyl of 1 to 4 carbon atoms; R.sub.2 is hydrogen, methyl, hydroxyl, alkoxy of 1 to 4 carbon atoms, di(alkyl of 1 to 2 carbon atoms)amino-(alkoxy of 1 to 4 carbon atoms) or NHCOCOOR.sub.1 ; R.sub.3 is hydrogen or NHCOCOOR.sub.1 ; A is ##STR2## R.sub.4 is hydrogen, methyl, alkoxy of 1 to 4 carbon atoms, hydroxyl, amino, alkanoyloxy of 1 to 2 carbon atoms, di(alkyl of 1 to 2 carbon atoms)-amino-(alkoxy of 1 to 4 carbon atoms) or acetamido; and R.sub.5 is hydrogen, amino, alkoxy of 1 to 4 carbon atoms, halogen or NHCOCOOR.sub.1 ; and, when R.sub.1 is hydrogen, nontoxic, pharmaceutically acceptable salts thereof. The compounds as well as their salts are useful for the treatment of immunological, inflammatory and allergic disorders such as asthma, rhinitis, conjunctivitis, hay fever, urticaria, food allergies and the like.
化合物的公式为##
STR1##
其中,R.sub.1为
氢或1至4个
碳原子的烷基;R.sub.2为
氢、
甲基、羟基、1至4个
碳原子的烷
氧基、二(1至2个
碳原子的烷基)
氨基-(1至4个
碳原子的烷
氧基)或NHCOCOOR.sub.1 ;R.sub.3为
氢或NHCOCOOR.sub.1 ;A为##
STR2##
R.sub.4为
氢、
甲基、1至4个
碳原子的烷
氧基、羟基、
氨基、1至2个
碳原子的烷酰
氧基、二(1至2个
碳原子的烷基)
氨基-(1至4个
碳原子的烷
氧基)或乙
酰胺基;R.sub.5为
氢、
氨基、1至4个
碳原子的烷
氧基、卤素或NHCOCOOR.sub.1 ;当R.sub.1为
氢时,它们的无毒、药学上可接受的盐也是有用的。这些化合物及其盐对于治疗免疫、炎症和过敏性疾病如哮喘、鼻炎、结膜炎、花粉症、荨麻疹、食物过敏等是有用的。