| 摘要 |
A benzimidazole compound of formula (I) in which R<1> is lower alkoxy, optionally substituted lower alkyl, cyclo(lower)alkyl, optionally substituted lower alkenyl, mono- or di(lower)alkylamino, optionally substituted heterocyclic group, or optionally substituted aryl, R<2> is hydrogen or lower alkyl, R<3> is optionally substituted aryl, A is lower alkylene, M is -NHCO-, -CONH-, (a), methylene or carbonyl, or R<1>-M is amino, and formula (b) is N-containing heterocyclic group, or pharmaceutically acceptable salts thereof, which is useful as a dopamine receptor agonist, 5-HT receptor agonist or alpha 1 receptor antagonist. |
