| abstract |
Imidazole compounds having adenosine deaminase inhibitory activity represented by the formula (I) wherein R1 is aryl or heterocyclic group which is optionally substituted with substituent(s); R 2 is lower alkyl; R 3 is hydroxy or protected hydroxy; -A- is lower alkylene; and —X— is —O— or —S—; provided that when then R 1 is aryl which is substituted with substituent(s), or heterocyclic group which is optionally substituted with substituent(s), its prodrug, or their salt. The compounds are useful for treating and/or preventing diseases for which adenosine is effective. |