申请人:Sandoz Ltd.
公开号:US04235907A1
公开(公告)日:1980-11-25
This invention provides compounds of formula ##STR1## wherein R.sub.1 is hydrogen, alkyl, alkenyl or alkynyl, the multiple bond of which is not adjacent to the nitrogen atom, R.sub.2 is, for example, hydrogen, alkyl, alkoxy, hydroxy or halogen, and R.sub.3 is hydrogen, halogen, hydroxyl, alkyl or alkoxy, useful, for example, in the treatment of allergic asthma.
本发明提供了公式 ##STR1## 中的化合物,其中R.sub.1为氢、烷基、烯基或炔基,其多重键不相邻于氮原子,R.sub.2为氢、烷基、烷氧基、羟基或卤素,而R.sub.3为氢、卤素、羟基、烷基或烷氧基。这些化合物可用于治疗过敏性哮喘等疾病。