The present invention is substituted amines of formula (X)
1
and of the formula (X′)
2
useful in treating Alzheimer's disease and other similar diseases.
Disclosed are compounds of the formula
wherein the variables R
N
, R
C
, R
1
, R
25
, R
2
, and R
3
are as defined herein. These compounds have activity as inhibitors of beta-secretase and are therefore useful in treating a variety of discorders such as Alzheimer's Disease.