Compounds of formula (I) in salt or zwitterionic form, wherein R1, R2, R3, R4 and R5 have the meanings as indicated in the specification, are useful for treating conditions that are mediated by the muscarinic M3 receptor. Pharmaceutical compositions that contain the compounds and a process for preparing the compounds are also described.
式(I)的盐或双离子形式的化合物,其中R1、R2、R3、R4和R5的含义如规范所示,可用于治疗由肌肉
乙酰胆碱M3受体介导的疾病。还描述了含有该化合物的制药组合物以及制备该化合物的过程。