申请人:Knust Henner
公开号:US20060084642A1
公开(公告)日:2006-04-20
The present invention is concerned with substituted imidazo[1,5-a][1,2,4]triazolo[1,5-d][1,4]benzodiazepine derivatives of formula I
wherein
R
1
is hydrogen, halogen, lower alkyl, lower alkynyl, cycloalkyl, heterocycloalkyl, benzyl, cyano, lower alkoxy, OCF
3
, —NHR, —NHC(O)R or —NHSO
2
R;
R
2
is lower alkyl substituted by halogen;
R
3
is hydrogen, methyl or aryl; R is lower alkyl, cycloalkyl or aryl; and pharmaceutically acceptable acid addition salts thereof. Such compounds have a high affinity and selectivity for GABA A α5 receptor binding sites and might be useful as cognitive enhancer or for the treatment of cognitive disorders, anxiety, schizophrenia or Alzheimer's disease.
本发明涉及公式I的取代咪唑[1,5-a][1,2,4]三唑并[1,5-d][1,4]苯二氮平衍生物,其中R1为氢、卤素、较低烷基、较低炔基、环烷基、杂环烷基、苄基、氰基、较低烷氧基、OCF3、—NHR、—NHC(O)R或—NHSO2R;R2为卤素取代的较低烷基;R3为氢、甲基或芳基;R为较低烷基、环烷基或芳基;以及其药学上可接受的酸盐。这些化合物对GABA A α5受体结合位点具有高亲和力和选择性,并可能用作认知增强剂或用于治疗认知障碍、焦虑、精神分裂症或阿尔茨海默病。