The present invention is concerned with a method of treating Alzheimer's disease by administering a therapeutically effective amount of a substituted imidazo[1,5-a][1,2,4]triazolo[1,5-d][1,4]benzodiazepine of formula I
wherein R
1
, R
2
, and R
3
are as defined herein, and their pharmaceutically acceptable acid addition salts. The invention also provides novel compounds of formula I-A and pharmaceutical compositions containing them.
                            本发明涉及通过给予公式I中的取代
咪唑[1,5-a] [1,2,4]三唑并[1,5-d] [1,4]苯二氮平的治疗有效量以治疗阿尔茨海默病的方法,其中R1,R2和R3如本文所定义,并且它们的药学上可接受的酸加盐。该发明还提供了公式I-A的新化合物和包含它们的药物组合物。