| abstract |
(57) [Summary] [Structure] Formula I Wherein, X is hydrogen, lower alkyl, lower alkoxy, hydroxy or nitro; Y is hydrogen or lower alkoxy; or alternatively X and Y are joined to form a group -OCH 2 O-together (In this case, the X and Y positions of the benzene ring moiety must be adjacent to each other); Z is hydrogen, lower alkyl, lower alkoxy, hydroxy, halogen or nitro and n is 0 or 1. ] The compound represented by these. [Effect] This compound is useful as a therapeutic agent for various memory dysfunctions characterized by cholinergic deficiency such as Alzheimer's disease. |