Sulfonamides for treatment of endothelin-mediated disorders
US6432994B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 27, 2000 |
| Grant date | Aug 13, 2002 |
| Priority date | — |
| Expiry date | Mar 27, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D417/14
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Thienyl-, furyl- and pyrrolyl-sulfonamides, pharmaceutically-acceptable salts of sulfonamides, formulations of salts and the sulfonamides, and methods for modulating or altering the activity of the endothelin family of peptides using the formulations and sulfonamides are provided. In particular, formulations of sodium salts of N-(isoxazolyl)thienylsulfonamides, N-(isoxazolyl)furylsulfonamides and N-(isoxazolyl)pyrrolylsulfonamides are provided. A process of preparing an alkali metal salt of a hydrophobic sulfonamide is provided. The process includes the step of dissolving a free sulfonamide in an organic solvent in the presence of a saturated alkali metal salt solution and recovering the formed sulfonamide salt from the organic phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.