Pyrido[2,3-d]pyrimidine derivatives, their preparation and their use as anti-asthma agents
申请人:NIPPON ZOKI PHARMACEUTICAL CO., LTD.
公开号:EP0696590A1
公开(公告)日:1996-02-14
The present invention provides a rapid-acting remedy for asthma having a bronchodilating action.
A remedy for bronchial asthma containing the pyrido[2,3-d]pyrimidine derivatives represented by the general formula (A) or pharmaceutically acceptable salts thereof as an effective component.
wherein R¹ and R² are same or different and each of them is hydrogen, alkyl or benzyl; R³ is hydrogen, hydroxyl, dialkylaminomethyleneamino or -NH-X; X is hydrogen, alkyl, alkenyl, hydroxyl, amino, hydroxyalkyl, benzyl or acyl; R⁴ is hydrogen, alkyl, halogen, nitro, amino, hydroxyl, benzyloxy, cyano, carboxyl, alkoxycarbonyl, alkoxysulfonyl, aminosulfonyl, dialkylaminosulfonyl or sulfo; and R⁵ is hydrogen, alkyl or amino.
The rapid-acting remedy for bronchial asthma of the present invention which is capable of relieving the symptom of laboring breath at the onset of asthma due to its bronchodilating action can be used as a therapy not only for allergic asthma but also for various bronchial asthma such as endogenous asthma, exogenous asthma and dust asthma.
本发明提供了一种具有支气管扩张作用的治疗哮喘的速效药。
一种治疗支气管哮喘的药物,含有通式(A)代表的吡啶并[2,3-d]嘧啶衍生物或其药学上可接受的盐作为有效成分。
其中 R¹ 和 R² 相同或不同,且各自为氢、烷基或苄基;R³ 为氢、羟基、二烷基氨基亚甲基氨基或-NH-X;X 为氢、烷基、烯基、羟基、氨基、羟基烷基、苄基或酰基;R⁴ 是氢、烷基、卤素、硝基、氨基、羟基、苄氧基、氰基、羧基、烷氧基羰基、烷氧基磺酰基、氨基磺酰基、二烷基氨基磺酰基或磺酰基;以及 R⁵ 是氢、烷基或氨基。
本发明的支气管哮喘速效药由于其支气管扩张作用,能够缓解哮喘发病时的呼吸费力症状,不仅可用于治疗过敏性哮喘,还可用于治疗各种支气管哮喘,如内源性哮喘、外源性哮喘和粉尘性哮喘。