Heteroaryl piperidine derivatives as novel acetylcholinesterase inhibitors and pharmaceutical compositions containing them

摘要

PCT No. PCT/US92/07230 Sec. 371 Date Mar. 9, 1994 Sec. 102(e) Date Mar. 9, 1994 PCT Filed Aug. 31, 1992 PCT Pub. No. WO93/07140 PCT Pub. Date Apr. 15, 1993Compounds of the formula IMAGE (I) wherein ring A, ring B, ring D, R2, R3, R4, R5, R6, R11, R12, R13, E, G, X and P are as defined below. The compounds of formula I are cholinesterase inhibitors and are useful in enhancing memory in patients suffering from dementia and Alzheimer's disease.