N-(5-isoxazolyl)benzenesulfonamides and N-(3-isoxazolyl)benzenesulfonamides and methods for modulating or altering the activity of the endothelin family of peptides are provided. In particular, N-(5-isoxazolyl)biphenylsulfonamides and N-(3-isoxazolyl)biphenylsulfonamides and methods for inhibiting the binding of an endothelin peptide to an endothelin receptor or increasing the activity of endothelin peptides by contacting the receptor with a sulfonamide are provided. N-isoxzolyl-4-biphenylsulfonamides are particularly preferred. These compounds exhibit activity as endothelin receptor B antagonists. Methods for treating endothelin-mediated disorders, particularly inflammatory diseases, such as asthma, by administering effective amounts of one or more of these sulfonamides or prodrugs thereof that inhibit or increase the activity of endothelin are also provided.
本发明提供了N-(5-
异噁唑基)苯磺酰胺和N-(3-
异噁唑基)苯磺酰胺及其调节或改变内皮素家族肽活性的方法。具体而言,本发明提供了N-(5-
异噁唑基)
联苯磺酰胺和N-(3-
异噁唑基)
联苯磺酰胺及其通过接触受体与磺酰胺来抑制内皮素肽与内皮素受体结合或增强内皮素肽活性的方法。N-
异噁唑基-4-
联苯磺酰胺是特别优选的。这些化合物表现出内皮素受体B拮抗剂的活性。本发明还提供了通过给予这些磺酰胺或其前药的有效剂量来抑制或增强内皮素活性的方法,以治疗内皮素介导的疾病,特别是炎症性疾病,如哮喘。