摘要:
Several analogs of verapamil, which are characterized by a reduced molecular flexibility, have been synthesized. pharmacological activity has been evaluated on guinea-pig atria (negative chronotropic and inotropic activities) and guinea-pig aorta strips (vasorelaxing activity), Their ability to displace the calcium antagonist (-)-desmethoxyverapamil ((-)-[H-3]-D888) on kitten cardiac tissue has also been evaluated. The pharmacological results are in accord with the previously reported models for negative inotropic and chronotropic activities of verapamil-like compounds, but fail to give information about the conformation(s) that act on smooth muscle.