| abstract |
Imidazole compounds having adenosine deaminase inhibitory activity represented by the formula (I): wherein R1 is optionally substituted aryl or optionally substituted heteroaryl, R2 is lower alkyl; R3 is hydroxy or protected hydroxy; X is 0 or S; and - A - is lower alkylene, its prodrug, or their salt. The compounds are useful for treating and/or preventing diseases for which adenosine is effective. |