The present invention provides a compound capable of being used as an active ingredient of an anti-cancer agent. To provide an anti-cancer agent with few side effects, an object of the present invention is to provide a compound capable of selectively inhibiting the target, i.e., DOCK1, or a salt thereof. The pyridinone compound of the present invention is represented by Formula (1):wherein R1 and R2 are the same or different, and each represents C1-6 alkyl； andR3 is a group represented by, for example, Formula (3) belowwherein R5 in the group represented by Formula (3) is hydrogen.
