NOVEL HETEROCYCLIC COMPOUNDS

摘要

Heterocyclic compounds represented by general formula (I) or pharmaceutically acceptable salts thereof, and interferon inducers, antiviral agents, anticancer agents and remedies for immunologic diseases containing the same as the active ingredient wherein X represents sulfur, oxygen or -NR3-, or R3 and R1 may form together an optionally substituted heterocycle via nitrogen; R1 represents optionally substituted alkyl, optionally substituted aryl or an optionally substituted heterocycle; and R2 represents hydrogen, halogeno, etc.