申请人:Boehringer Ingelheim Pharmaceuticals, Inc.
公开号:US04681884A1
公开(公告)日:1987-07-21
Compounds of the formula ##STR1## wherein 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.
式为##STR1##的化合物,其中R.sub.1是氢或1到4个碳原子的烷基;R.sub.2是氢、甲基、羟基、1到4个碳原子的烷氧基、二(1到2个碳原子的烷基)氨基-(1到4个碳原子的烷氧基)或NHCOCOOR.sub.1;R.sub.3是氢或NHCOCOOR.sub.1;A是##STR2##;R.sub.4是氢、甲基、1到4个碳原子的烷氧基、羟基、氨基、1到2个碳原子的烷酰氧基、二(1到2个碳原子的烷基)-氨基-(1到4个碳原子的烷氧基)或乙酰氨基;R.sub.5是氢、氨基、1到4个碳原子的烷氧基、卤素或NHCOCOOR.sub.1;当R.sub.1为氢时,其无毒、药学上可接受的盐。这些化合物及其盐可用于治疗免疫、炎症和过敏性疾病,如哮喘、鼻炎、结膜炎、花粉热、荨麻疹、食物过敏等。