| abstract |
The present invention relates to formula I [Chemical 1] (Wherein R1, R2, X, A, B and Y1-Y4 have the meanings defined in the claims) and / or their pharmaceutically acceptable salts and / or prodrugs. Because of their properties as chemokine receptor inhibitors, particularly CXCR2 inhibitors, the compounds of formula I and their pharmaceutically acceptable salts and prodrugs are suitable for the prevention and treatment of chemokine mediated diseases. |