Compounds of Formula (I) in free or salt or solvate form, wherein X has the meaning indicated in the specification, are useful for treating conditions that are prevented or alleviated by activation of the ß2-adrenoreceptor. Pharmaceutical compositions that contain the compounds and processes for preparing the compounds are also described.
公式(I)中的化合物以自由形式、盐或溶剂形式存在,其中X具有规范中指示的含义,可用于治疗通过激活β2-
肾上腺素受体预防或缓解的症状。还描述了含有这些化合物的药物组合物以及制备这些化合物的方法。