| abstract |
There are described compounds of the formula ##STR1## where --R is ##STR2## --R 3 and R 3 being independently --H, loweralkyl, --CHO, --CH═CH 2 , --CH═CH--loweralkyl, --CH═CHCO 2 C 2 H 5 , --CH 2 N(C 2 H 5 ) 2 or ##STR3## --R 1 when existent is --H, loweralkyl, --CH 2 C.tbd.CH, ##STR4## R 5 being methyl or phenyl optionally mono-substituted with loweralkyl or loweralkoxy; n --R 2 when existent is loweralkyl or --CH 2 C.tbd.CH; n --X is --H, loweralkyl, loweralkoxy, halogen or trifluoromethyl; and the two --Y groups when existent are both --H, or combine to constitute --(CH 2 ) 4 --; n which compounds are useful as analgesic agents, and for treating various memory dysfunctions characterized by decreased cholinergic function such as Alzheimer's disease. |