Synthesis of new fenmetazole analogues with potential mixed α2-adrenergic antagonistic activity and noradrenaline-uptake inhibiting properties
作者:P Melloni、A Della Torre、M Meroni、P Pevarello、M Varasi、A Bonsignori、M Cini、F Vaghi、P Dostert
DOI:10.1016/0223-5234(91)90031-h
日期:1991.3
In the search for new antidepressants with a rapid onset of action, fenmetazole analogues, bearing a second phenyl ring in a position previously shown not to be detrimental to affinity and selectivity for the alpha-2-adrenoreceptors, were synthesized in an attempt to combine NA-uptake inhibition and blockade of the alpha-2-adrenoreceptors in the same molecule. Some of the new molecules showed enhanced affinity and selectivity for the alpha-2-adrenoreceptors compared to fenmetazole. Surprisingly, introduction of a phenyl ring in the structure of fenmetazole changed the agonistic action of the parent compound toward the alpha-1-adrenoreceptors into an antagonistic effect. However, none of the new derivatives showed in vitro NA-uptake inhibitory potency substantially different from the low activity of fenmetazole in this test.