申请人:Warner-Lambert Company
公开号:US04018825A1
公开(公告)日:1977-04-19
Compounds of the formula: ##STR1## are disclosed, wherein R.sub.1 and R.sub.2 are hydrogen; or where R.sub.1 is methyl, R.sub.2 is hydrogen, phenyl, or phenyl substituted in the para-position by hydroxy, alkoxy, chloro, phenyl or alkyl having 1-6 carbon atoms. The compounds of this invention are useful in the treatment of bronchial asthma. These compounds exhibit unique biological properties in that they provide the desired bronchial dilation effect without accompanying cardiac stimulation.
揭示了以下式的化合物:##STR1## 其中R.sub.1和R.sub.2是氢;或者其中R.sub.1是甲基,R.sub.2是氢、苯基或在对位被羟基、烷氧基、氯、苯基或含有1-6个碳原子的烷基取代的苯基。本发明的这些化合物在支气管哮喘的治疗中是有用的。这些化合物具有独特的生物学特性,它们在提供所需的支气管扩张效果的同时不会引起心脏刺激。