This invention provides a novel disubstituted 1,2,4-triazine compound or a pharmaceutically acceptable salt thereof, which has an aldosterone synthetase inhibitory activity and is useful for preventing and/or treating various diseases or conditions associated with aldosterone; a method for preparing it; use of it; as well as a pharmaceutical composition comprising it as an active ingredient. A compound of the general formula [I]:
wherein R
A
is, for example, a group of the following formula (A-1):
wherein ring A
1
is, for example, a cycloalkyl group which may be substituted, and R
B
is, for example, a monocyclic cycloalkyl group,
or a pharmaceutically acceptable salt thereof.