Synthesis and Biological Evaluation of Pyrrolinic Isosteres of Rilmenidine. Discovery of <i>cis</i>-/<i>trans</i>-Dicyclopropylmethyl-(4,5-dimethyl-4,5-dihydro-3<i>H</i>- pyrrol-2-yl)-amine (LNP 509), an I<sub>1</sub> Imidazoline Receptor Selective Ligand with Hypotensive Activity
detectable affinity at alpha2ARs yet was capable of lowering blood pressure after central administration. These pyrrolinic analogues constitute a new chemical class of imidazoline related compounds with high selectivity for the I1Rs. They could be used as new tools in the study of I1Rs and in the conception of new centrallyacting hypotensive drugs.