| 摘要 |
A compound of formula (I), wherein substituents are as given above, useful in the treatment of a disease mediated by the action of CCR3, wherein R1 and R2independently are (C6-18)aryl or (C6-18)aryl(C1-6)alkyl one or morefold substituted by (C1-6)alkyl, C(1-6)aIkoxy, halo(C1-6)alkyl, halogen or unsubstituted or substituted heterocyclyl having 5 or 6 ring members and 1 to 4 heteroatoms selected from N, O, S.
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