Novel benzamide derivatives (19-24, 32a-c, 43d-f), each possessing a cycloaminoalkanecarboxylic acid side chain, were synthesized and their gastrointestinal prokinetic and dopamine D 2 receptor antagonist activities were evaluated. 4-[(4-Amino-5- chloro-2-methoxybenzoyl) amino]-1-piperidineacetic acid (19) exhibited the most potent gastro-and colon-prokinetic activities, through intravenous administration to conscious ...