Piperazine analogs of aryloxyaminopropanols and a study of their effects on a model of the isolated guinea pig ileum

: Seven compounds belonging to the group of aryloxyaminopropanols with carbamate substitution of the aromatic ring and with derivatives of N-phenylpiperazine in the lipophilic part were prepared by a well-tried method. Selected drugs were pharmacologically evaluated by in vitro experiments. Aryloxyaminopropanol drugs confirmed their anti-calcium activity on the intestinal model. Significant anti-calcium activity of agents IIIq and IIIb (pA2 = 6,83 +/- 1,47; 7, 12 +/- 1, 12 was comparable to that found for the standards verapamil and flunarizine. These compounds were selected for in vivo experiments and evaluated for their effect on reperfusion-induced arrhythmias in anaesthetized rats. Results of these evaluations are given in the next article.