| 摘要 |
<p>Compounds of formula (I) wherein R<SUP>F1</SUP>, R<SUP>F2</SUP>, Z, R<SUP>1</SUP>, R<SUP>2</SUP>, Ar, X and Y are as defined in the specification as well as salts and pharmaceutical compositions including the compounds were prepared. These compounds are useful in therapy, in particular in the management of pain.</p> |
