Arylalkylamine derivatives

摘要

Disclosed is a novel arylalkylamine derivative represented by the formula (I) <IMAGE> (I) wherein X represents -O-, -CH2- or -NR3- in which R3 represents hydrogen or lower alkyl; Y represents -NH- or <IMAGE> Z represents <IMAGE> in which R4 represents hydrogen or lower alkyl or <IMAGE> Q represents an optionally substituted aryl or optionally substituted aromatic heterocyclic group; each of R1 and R2 independently represents hydrogen or lower alkyl; each of m and n independently represents an integer of 0 or 1; and a pharmaceutically acceptable salt thereof. The compound (I) and a pharmaceutically acceptable salt thereof show bronchodilatory and antiallergic activities, and are useful for treating respiratory disorders such as bronchial asthma.