Piperidine derivatives as anticholinergic agents.

It EXPOSED an amine compound CYCLIC by the formula: wherein J IS indanyl, indanonyl, indenyl, INDENONILO, INDANEDIONILO, tetralonyl, BENZOSUBERONILO, indanolyl or a divalent group THEREOF, K is phenyl, arylalkyl or cinnamyl, B ES - (CHR22) R-, BEING mETHYL R22 HO, -CO- (CHR22) R, = (CH-CH = CH) B-, = CH- (CH2) CO = (CH-CH) D = and the ring It INCLUDES t and q is piperidine. The compound is useful for preparing pharmaceutical compositions AND DRUGS effective against dementia.