Earlier we have reported the effect of arecoline thiazolidinone and morpholino arecolinederivatives as muscarinicreceptor 1 agonists in Alzheimer’s presenile dementia models. To elucidate further our Structure–Activity Relationship (SAR) studies on the chemistry and muscarinicreceptor 1 binding efficacy, a series of novel carboxamide derivatives of 2-(1-methyl-1,2,5,6-tetrahydropyridin-3-yl)morpholine