| 摘要 |
<p>The present invention relates to piperazine derivatives of formula (I) wherein R and R1 represent independently halogen or C1-4 alkyl; R2 is hydrogen or C1-4 alkyl; n and m are independently 1 or 2 and pharmaceutically acceptable salts and solvates thereof, to process for their preparation, to pharmaceutical compositions containing them and to their medical use.</p> |
