| 摘要 |
<p>The invention relates to compounds of the general formula (I), wherein R1, R2are independently from each other hydrogen or Cl-C6-alkyl; R3,R4 are independently from each other hydrogen or C1-C6-alkyl; R5is halogen, CN, (C1-C6)-alkyl or (C1-C6)-alkoxy; n,m or o is 0, 1 or 2; as well as to their pharmaceutically acceptable salts. The compoundsmay be used for the treatment and prevention of Alzheimer's disease or seniledementia.</p> |
