申请人:Warner-Lambert Company
公开号:US04076729A1
公开(公告)日:1978-02-28
The present invention relates to compounds of the formula: ##STR1## wherein R.sub.1 is hydrogen, halogen, hydroxy, lower alkoxy or lower alkyl, R.sub.2 is hydrogen or lower alkyl; R.sub.3 is hydrogen or lower alkyl. These compounds, including their corresponding pharmaceutically acceptable salts, are useful in the management of allergic conditions such as hay fever and as a prophylactic in the treatment of bronchial asthma.
本发明涉及以下结构的化合物:##STR1##其中R.sub.1为氢、卤素、羟基、较低的烷氧基或较低的烷基,R.sub.2为氢或较低的烷基;R.sub.3为氢或较低的烷基。这些化合物及其相应的药用盐在管理过敏性疾病如花粉热以及作为治疗支气管哮喘的预防药物中是有用的。