| abstract |
There are disclosed various compounds of the formula below, <IMAGE> where the various parameters R1, R2, R3, R4, X, m and n are as defined in the specification, which show activities as a monoamine oxidase inhibitor demonstrating a utility for the treatment of depression, and activities as a cholinesterase inhibitor demonstrating a utility for the treatment of various memory dysfunctions such as Alzheimer's disease. |