| abstract |
(57) [Problem] To provide a purine compound having an activity of inducing interferon biosynthesis, and an antiviral agent, an anticancer agent, or a therapeutic agent for an immune disease containing the purine compound as an active ingredient. SOLUTION: General formula (1) (Wherein X 1 and X 2 both represent a nitrogen atom, X 1 is a nitrogen atom and X 2 represents CH, or X 1 is CH and X 2 represents a nitrogen atom, R 1 is an amino group, R 2 represents an amino group, an alkylamino group, OX 3 , SX 3 and the like, X 3 represents a hydrogen atom, an alkyl group, a substituted alkyl group, an alkenyl group and the like, and Y 1 and Y 2 are the same or different and represent a hydrogen atom, a hydroxyl group, an alkyl group and the like. Or a pharmaceutically acceptable salt thereof. |