Synthesis and Structure-Activity Relationships of 4-Amino-5-chloro-N-(1,4-dialkylhexahydro-1,4-diazepin-6-yl)-2-methoxybenzamide Derivatives, Novel and Potent Serotonin 5-HT3 and Dopamine D2 Receptors Dual Antagonist.
affinity along with a potent5-HT3receptor binding affinity. Among the compounds, 5-chloro-N-(1-ethyl-4-methylhexahydro-1,4-diazepin-6-yl)-2-methoxy-4-methylaminobenzamide (82), 5-bromo (110), and 5-iodo (112) analogues exhibited a much higher affinity for the dopamine D2 receptor than that of metoclopramide (IC50=17.5-61.0 nM vs. 483 nM). In particular, 82 showed a potentantagonistic activity for both