| 摘要 |
Novel condensed benzene derivatives having prolyl endopeptidase inhibitory, anti-hypoxic, and anti-amnesic activities are disclosed. The compounds are represented by the following (I), <CHEM> wherein A represents a methylene, ethylene, or propylene group, B represents a methylene or ethylene group, m denotes an integer of 0-5, X and Y, which may be same or different, individually represent a methylene group or sulfur atom, R<1> represents a hydrogen atom, a carboxyl, lower alkyloxycarbonyl, hydroxymethyl, or formyl group, R<2> represents a hydrogen atom, a halogen atom, a lower alkyl, lower alkoxy, nitro, or amino group, R<3> represents a hydrogen atom or a lower alkyl group, and the dotted line may optionally be present. They are useful as a medicine for treating or preventing cerebral circulation disorder, cerebral metabolism disorder, or memory disturbance. |
