申请人:Warner-Lambert Company
公开号:US04117134A1
公开(公告)日:1978-09-26
This invention relates to compounds of the formula ##STR1## wherein R.sub.1 is hydrogen, lower alkyl, halogen, hydroxy or lower alkoxy; R.sub.2 is hydrogen or lower alkyl; R.sub.3 is hydrogen or lower alkyl; and the pharmaceutically acceptable, non-toxic salts thereof. The compounds of the invention are active in the prevention of allergic and asthmatic reactions in mammals.
本发明涉及以下式子的化合物: ##STR1## 其中R.sub.1是氢,低烷基,卤素,羟基或低烷氧基;R.sub.2是氢或低烷基;R.sub.3是氢或低烷基;以及其药学上可接受的、无毒的盐。本发明的化合物在哺乳动物的过敏和哮喘反应的预防中具有活性。