Compounds of the formula ##STR1## wherein R, Y and R.sup.1 are as defined in the specification. These compounds are muscarinic receptor antagonists which are selective for smooth muscle muscarinic sites over cardiac muscarinic sites, and are useful in the treatment of diseases associated with altered motility on tone of smooth muscle, including irritable bowel syndrome, diverticular disease, urinary incontinence, oesophageal achalasia and chronic obstructive airways disease.
式##STR1##中的化合物,其中R、Y和R.sup.1如规范中定义。这些化合物是选择性作用于平滑肌
胆碱受体位点而不是心脏
胆碱受体位点的拮抗剂,可用于治疗与平滑肌运动或张力改变相关的疾病,包括肠易激综合征、结肠憩室病、尿失禁、食管失弛缓和慢性阻塞性气道疾病。