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.
NOVEL COMPOUND, COLORING COMPOSITION FOR DYEING OR TEXTILE PRINTING, INK JET INK, METHOD OF PRINTING ON FABRIC, AND DYED OR PRINTED FABRIC
申请人:FUJIFILM Corporation
公开号:US20170101533A1
公开(公告)日:2017-04-13
Provided are a compound represented by any one of Formulae (1) to (3) (for example, the following compound), a coloring composition for dyeing or textile printing including the compound, an ink jet ink including the coloring composition for dyeing or textile printing, a method of printing on fabric, and a dyed or printed fabric, in which the color is excellent, the color optical density is high, and light fastness, water fastness, and chlorine fastness are excellent.