Endothelin Antagonists: Substituted Mesitylcarboxamides with High Potency and Selectivity for ETA Receptors
摘要:
We have previously disclosed the discovery of 2,4-disubstituted anilinothiophenesulfonamides with potent ETA-selective endothelin receptor antagonism and the subsequent identification of sitaxsentan (TBC11251, 1) as a clinical development compound (Wu et al. J. Med. Chem. 1997, 40, 1682 and 1690). The orally active 1 has demonstrated efficacy in a phase II clinical trial of congestive heart failure (Givertz ct al. Circulation 1998, 98, Abstr. #3044) and was active in rat models of myocardial infarction (Podesser et al. Circulation. 1998, 98, Abstr. #2896) and acute hypoxia-induced pulmonary hypertension (Chen et al. FASEB J. 1996, 10 (3), A104). We now report that an additional substituent at the 6-position of the anilino ring further increases the potency of this series of compounds. It was also found that a wide range of functionalities at the 3-position of the 2,4,6-trisubstituted ring increased ETA selectivity by similar to 10-fold while maintaining in vitro potency, therefore rendering the compounds amenable to fine-tuning of pharmacological and toxicological profiles with enhanced selectivity. The optimal compound in this series was found to be TBC2576 (7u), which has similar to 10-fold higher ETA binding affinity than 1, high ETA/ETB selectivity, and a serum half-life of 7.3 h in rats, as well as in vivo activity.
N-heteroaryl aryl-substituted thienyl-furyl-and pyrrolyl-sulfonamides and derviatives thereof that modulate the activity of endothelin
申请人:Texas Biotechnology Corporation
公开号:US06420567B1
公开(公告)日:2002-07-16
Thienyl-, furyl- and pyrrolyl-sulfonamides, formulations of pharmaceutically-acceptable salts thereof and methods for modulating or altering the activity of the endothelin family of peptides are provided. In particular, N-(isoxazolyl)thienylsulfonamides, N-(isoxazolyl)furylsulfonamides and N-(isoxazolyl)pyrrolylsulfonamides, formulations thereof and methods using these sulfonamides for inhibiting the binding of an endothelin peptide to an endothelin receptor by contacting the receptor with the sulfonamide are provided. Methods for treating endothelin-mediated disorders by administering effective amounts of one or more of these sulfonamides or prodrugs thereof that inhibit the activity of endothelin are also provided.
[EN] SULFONAMIDES AND DERIVATIVES THEREOF THAT MODULATE THE ACTIVITY OF ENDOTHELIN<br/>[FR] SULFONAMIDES ET DERIVES DE CEUX-CI, MODULANT L'ACTIVITE DE L'ENDOTHELINE
申请人:TEXAS BIOTECHNOLOGY CORPORATION
公开号:WO1998013366A1
公开(公告)日:1998-04-02
(EN) Thienyl-, furyl- and pyrrolyl-sulfonamides, formulations of pharmaceutically acceptable salts thereof and methods for modulating or altering the activity of the endothelin family of peptides are provided. In particular, N-(isoxazolyl)thienylsulfonamides, N-(isoxazolyl)furylsulfonamides and N-(isoxazolyl)pyrrolylsulfonamides, formulations thereof and methods using these sulfonamides for inhibiting the binding of an endothelin peptide to an endothelin receptor by contacting the receptor with the sulfonamide are provided. Methods for treating endothelin-mediated disorders by administering effective amounts of one or more of these sulfonamides or prodrugs thereof that inhibit the activity of the endothelin are also provided.(FR) L'invention concerne des thiényl-, furyl- et pyrrolyl-sulfonamides, des formulations de sels pharmaceutiquement acceptables de ceux-ci et des procédés de modulation ou de modification de peptides de la famille de l'endothéline. Elle porte notamment sur des N-(isoxazolyl)thiénylsulfonamides, des N-(isoxazolyl)furylsulfonamides et des N-(isoxazolyl)pyrrolylsulfonamides, des formulations de ceux-ci et des procédés dans lesquels ces sulfonamides sont utilisés pour l'inhibition de la liaison d'un peptide d'endothéline à un récepteur de l'endothéline par la mise en contact du récepteur avec le sulfonamide. Elle se rapporte encore à des procédés de traitement de troubles dont l'endothéline est à l'origine, qui consistent à administrer des doses efficaces d'un ou plusieurs de ces sulfonamides ou promédicaments de ces derniers, qui inhibent l'activité de l'endothéline.
Sulfonamides and derivatives thereof that modulate the activity of endothelin
申请人:——
公开号:US20030208084A1
公开(公告)日:2003-11-06
Thienyl-, furyl- and pyrrolyl-sulfonamides, formulations of pharmaceutically-acceptable salts thereof and methods for modulating or altering the activity of the endothelin family of peptides are provided. In particular, N-(isoxazolyl)thienylsulfonamides, N-(isoxazolyl)furylsulfonamides and N-(isoxazolyl)pyrrolylsulfonamides, formulations thereof and methods using these sulfonamides for inhibiting the binding of an endothelin peptide to an endothelin receptor by contacting the receptor with the sulfonamide are provided. Methods for treating endothelin-mediated disorders by administering effective amounts of one or more of these sulfonamides or prodrugs thereof that inhibit the activity of endothelin are also provided.