.alpha.-Adrenoreceptor reagents. 3. Synthesis of some 2-substituted 1,4-benzodioxans as selective presynaptic .alpha.2-adrenoreceptor antagonists
摘要:
The synthesis and pharmacological activity of a series of 2-substituted derivatives of the selective alpha 2-adrenoreceptor antagonist idazoxan (RX 781094) is described. Substitution in this position by alkyl, alkenyl, cycloalkenyl, and alkoxy groups in many cases gives compounds whose potencies and selectivities are significantly greater than those of the parent compound.
The present invention relates to compositions comprising an alpha-adrenoceptor ligand for use in the treatment of benign anorectal conditions, in particular haemorrhoids. In addition to an alpha-adrenoceptor ligand, the compositions of the inventions may additionally include a calcium channel activator. Compositions with guanfacine and S(−)BayK8644 are preferred.