An object of the present invention is to provide a novel benzazepine compound or a salt thereof, which has excellent vasopressin antagonistic activity.
The benzazepine compound or a salt thereof of the present invention is represented by Formula (
1
):
wherein R
1
, R
2
and R
5
may be the same or different and each represents H or D; and R
3
and R
4
each represents a C
1-6
alkyl group, a C
1-6
deuteroalkyl group, or a C
1-6
perdeuteroalkyl group.