申请人:NIPPON ZOKI PHARMACEUTICAL CO. LTD.
公开号:EP0243311A2
公开(公告)日:1987-10-28
The present invention relates to a novel pyrido[2,3-d]pyrimidine derivative having the formula (1):
wherein each of R, and R2, which may be the same or different, is a lower alkyl group; and each of R3 and R4, which may be the same or different, is hydrogen, halogen, hydroxy, nitro, amino, hydroxyamino, hydrazino, azido, a lower alkenylamino group or a lower alkylamino group which may optionally be substituted by hydroxy; and pharmaceutically acceptable salt thereof. These compounds are useful as anti-allergic agents, for example, for the treatment of bronchial asthma, urticaria, allergic rhinitis, allergic dermatoses or allergic conjunctivitis.
本发明涉及一种具有式(1)的新型吡啶并[2,3-d]嘧啶衍生物:
其中R和R2(可以相同或不同)各自为低级烷基;R3和R4(可以相同或不同)各自为氢、卤素、羟基、硝基、氨基、羟基氨基、肼基、叠氮基、低级烯氨基或可任选被羟基取代的低级烷氨基;及其药学上可接受的盐。这些化合物可用作抗过敏剂,例如用于治疗支气管哮喘、荨麻疹、过敏性鼻炎、过敏性皮肤病或过敏性结膜炎。