Novel amphoteric tricyclic compound represented by the following formula:
wherein R¹ represents a hydrogen atom or a halogen atom; X represents -O-, -CH₂O-, or -OCH₂-; and Y represents a C₂-C₅ alkylene group which may optionally be substituted with a lower alkyl group, and a pharmacologically acceptable salt thereof are disclosed. Also disclosed are a method for preparing the same, a pharmaceutical composition comprising the same useful as an antiallergic agent and an agent for bronchial asthma, and a method for treatment of an allergic disease or bronchial asthma comprising the step of administering the same.
由下式表示的新型两性
三环化合物:
其中R¹代表氢原子或卤原子;X代表-O-、-CH₂O-或-OCH₂-;Y代表C₂-C₅亚烷基,可任选被低级烷基取代,本发明公开了其药理学上可接受的盐。还公开了制备上述物质的方法、包含上述物质的可用作抗过敏药剂和支气管哮喘药剂的药物组合物,以及包括施用上述物质步骤的治疗过敏性疾病或支气管哮喘的方法。