6-AMINO-9-BENZYL-8-HYDROXYPURINE DERIVATIVES

摘要

Heterocyclic compounds represented by general formula (I) or pharmaceuticall y 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.