9-substituted-8-oxoadenine compound

THE PRESENT INVENTION PROVIDES AN 8-OXOADENINE COMPOUND HAVING IMMUNEMODULATING ACTIVITIES SUCH AS AN INTERFERON INDUCING ACTIVITY AND USEFUL AS AN ANTIVIRAL AGENT AND ANTIALLERGIC AGENT, WHICH IS REPRESENTED BY THE FOLLOWING FORMULA (1): [WHEREIN THE RING A REPRESENTS A 6-10 MEMBERED AROMATIC CARBOCYCLIC RING AND THE LIKE, R REPRESENTS A HALOGEN ATOM, AN ALKYL GROUP AND THE LIKE, N REPRESENTS AN INTEGER OF 0-2, Z? REPRESENTS ALKYLENE, X? REPRESENT S OXYGEN ATOM, SULFUR ATOM, SO?, NR?, CO, CONR?, NR?CO AND THE LIKE, Y?, Y? AND Y? REPRESENT INDEPENDENTLY A SINGLE BOND OR AN ALKYLENE GROUP, X? REPRESENTS OXYGEN ATOM, SULFUR ATOM, NR? (R? IS HYDROGEN ATOM OR AN ALKYL GROUP) OR A SINGLE BOND, R? REPRESENTS A SUBSTITUTED OR UNSUBSTITUTED ALKYL GROUP, R? REPRESENTS HYDROGEN ATOM, HYDROXY GROUP, AN ALKOXY GROUP, AN ALKOXYCARBONYL GROUP OR A HALOALKYL GROUP]OR ITS PHARMACOLOGICALLY ACCEPTABLE SALT.