bosentan
A sulfonamide-derived, competitive and specific endothelin receptor antagonist with a slightly higher affinity for the endothelin A receptor than endothelin B receptor. Bosentan blocks the action of endothelin 1, an extremely potent endogenous vasoconstrictor and bronchoconstrictor, by binding to endothelin A and endothelin B receptors in the endothelium and vascular smooth muscle. Bosentan decreases both pulmonary and systemic vascular resistance and is particularly used in the treatment of pulmonary arterial hypertension.
| Synonym: | bosentan monohydrate |
|---|---|
| US brand name: | Tracleer |
| Code name: | Ro 47-0203 |
| Chemical structure: | 4-(1,1-dimethylethyl)-N-(6-(2-hydroxyethoxy)-5-(2-methoxyphenoxy)-(2,2'-bipyrimidin)-4-yl)benzenesulfornamide |