Compounds of formula (I) are thus useful for treating disorders of the urinary tract. In the compounds I, R1 = one or more substituents selected from H, halogen, OH, alkyl, haloalkyl, alkoxy, haloalkoxy, NO2, nitro, phenyl, substituted phenyl, heterocycle, substituted heterocycle, NR3R4(R3 and R4 being H, alkyl, acyl or alkoxycarbonyl); R2 = one or two substituents selected from H, alkyl; Y = CH2 or a bond; Q = CO, CS or SO2; A = alkyl, alkenyl, cycloalkyl, cycloalkenyl, aryl, heterocyclic, alkylamino, dialkylamino, arylamino or arylalkylamino, each of which is optionally substituted; n is 1 or 2; X = an amino moiety selected from formula (a), (b) and -N(R5)-CH2-(R5 = H, methyl, benzyl group; W = bond, N, CH, CH2, C(CN) C(OH) or C(COCH3) (when W represents a nitrogen atom or a CH, C(CN) C(OH) or C(COCH3) group, the group Z-B attaches to the W ring atom); when X is (a) or (b), Z = bond, O, S, CH2, CH2CH2, CO, CHOH, OCH2, NH, NHCO or NHCONHCH2, but when X is -N(R5)-CH2-group, Z represents a CH2CH2 or CH2O group or Z and B together represent a 2,3-dihydro-benzo[1,4]dioxin-2-yl group; and B is a monocyclic or bicyclic aryl group or a monocyclic or bicyclic heterocycle, each of which is optionally substituted.