Novel compounds are disclosed having useful activity as bronchodilators of improved longevity of action and reduced incidence of side effects. These compounds are described by the formula: ##STR1## wherein R.sub.1 is a member of the class consisting of tertiary butyl and cyclobutyl, and R.sub.2 is a hydrogen or 2 to 5 carbon atom acyl radical, and pharmaceutically acceptable salts thereof. The activity of these compounds is compared to previously known bronchodilators such as 1-(3', 5'-dihydroxyphenyl)-2-(isopropylamino)-ethanol, having the common name orciprenaline, and 1-(3', 4'-dihydroxyphenyl-2-isopropylamino-ethanol, having the common name isoprenaline.
披露了一种新型化合物,具有作为支气管扩张剂的有用活性,且具有改善作用持续时间和减少副作用发生率。这些化合物由以下公式描述:##STR1## 其中R.sub.1是三丁基和
环丁基的一种,R.sub.2是氢或2至5个碳原子酰基基团,以及其药学上可接受的盐。这些化合物的活性与先前已知的支气管扩张剂(如1-(3',5'-二羟基苯基)-2-(异丙基
氨基)
乙醇,通用名称为
奥克比
肾上腺素,和1-(3',4'-二羟基苯基-2-异丙基
氨基)
乙醇,通用名称为
异丙肾上腺素)进行了比较。