5-[(2R)-[2-[2-[2-(2,2,2-trifluoroethoxy)phenoxy]ethyl]amino]propyl]-2-methox ybenzenesulfonamide, a pharmaceutical composition containing the compound, and the synthesis method thereof. The compound has strong antagonism toward α1-adrenceptor and has high selectivity toward smooth muscle of urethra.
Tamsulosin (-)-1 is the most utilized alpha(1)-adrenoceptor antagonist in the benign prostatic hyperplasia therapy owing to its uroselective antagonism and capability in relieving both obstructive and irritative lower urinary tract symptoms. Here we report the synthesis and pharmacological study of the homochiral (-)-1 analogues (-)-2-(-)-5, bearing definite modifications in the 2-substituted phenoxyethylamino group in order to evaluate their influence on the affinity profile for alpha(1)-adrenoceptor subtypes. The benzyl analogue (-)-3, displaying a preferential antagonist profile for alpha(1A)-than alpha(1D)-and alpha(1B)-adrenoceptors, and a 12-fold higher potency at alpha(1A)-adrenoceptors with respect to the alpha(1B) subtype, may have improved uroselectivity compared to (-)-1. (C) 2010 Elsevier Masson SAS. All rights reserved.
5-[(2R)-[2-[2-[2-(2,2,2-trifluoroethoxy)phenoxy]ethyl]amino]propyl]-2-methoxybenzenesulfonamide, a pharmaceutical composition containing the compound, and the synthesis method thereof. The compound has strong antagonism toward α1-adrenceptor and has high selectivity toward smooth muscle of urethra.
[EN] 5-[(2R)-[2-[2-[2-(2,2,2-trifluoroethoxy)phenoxy]ethyl]amino]propyl]-2-methoxybenzenesulfonamide, a pharmaceutical composition containing the compound, and the synthesis method thereof. The compound has strong antagonism toward a1-adrenoceptor and has high selectivity toward smooth muscle of urethra. [FR] La présente invention concerne un composé 5-[(2R)-[2-[2-[2-(2,2,2-trifluoroéthoxy)phénoxy]éthyl]amino]propyl]-2-methoxybenzenesulfonamide, une composition pharmaceutique contenant le composé, et son procédé de synthèse. Le composé présente un fort antagonisme vis-à-vis de l'adrénorécepteur a1 et présente une grande sélectivité vis-à-vis du muscle lisse de l'urètre.