abstract |
The invention relates to 4-oxo-2,3,4,5-tetrahydro-benzo[b][1,4]diazepines of formula I n n nwherein R 1 , R 2 , R 3 and R 4 are as defined in the description and claims, which are γ-secretase inhibitors and which may be useful in the treatment of Alzheimer's disease. |