Discovery and Structure-Activity Relationships of Sulfonamide ETA-Selective Antagonists

Journal of Medicinal Chemistry
1995.0

Abstract

Random screening of compounds in an ETA receptor binding assay led to the discovery of a class of benzenesulfonamide ligands. Optimization led to the development of 5-amino-N-(3,4-dimethyl-5-isoxazolyl)-1-naphthalenesulfonamides which were functional antagonists. Structural features which were important to activity included a 1,5-substitution pattern on the naphthalene ring; a sulfonamide NH with a pK value < 7; an amine, preferably with alkyl substituents, at the 5-position; and methyl groups on both the 3- and 4-positions of the isoxazole.

Knowledge Graph

Similar Paper

Discovery and Structure-Activity Relationships of Sulfonamide ETA-Selective Antagonists
Journal of Medicinal Chemistry 1995.0
The Discovery of Sulfonamide Endothelin Antagonists and the Development of the Orally Active ETA Antagonist 5-(Dimethylamino)-N-(3,4-dimethyl-5- isoxazolyl)-1-naphthalenesulfonamide
Journal of Medicinal Chemistry 1994.0
Halogen substitution at the isoxazole ring enhances the activity of N-(isoxazolyl)sulfonamide endothelin antagonists
Bioorganic &amp; Medicinal Chemistry Letters 1996.0
Discovery and synthesis of a potent sulfonamide ETB selective antagonist
Bioorganic &amp; Medicinal Chemistry Letters 2000.0
Biphenylsulfonamide Endothelin Receptor Antagonists. 4. Discovery of N-[[2‘-[[(4,5-Dimethyl-3-isoxazolyl)amino]sulfonyl]-4-(2-oxazolyl)[1,1‘-biphenyl]- 2-yl]methyl]-N,3,3-trimethylbutanamide (BMS-207940), A Highly Potent and Orally Active ET<sub>A</sub> Selective Antagonist
Journal of Medicinal Chemistry 2003.0
N-4-Substituted-benzyl-N′-tert-butylbenzyl thioureas as vanilloid receptor ligands: investigation on the role of methanesulfonamido group in antagonistic activity
Bioorganic &amp; Medicinal Chemistry Letters 2004.0
Pyrrolidine-3-carboxylic Acids as Endothelin Antagonists. 2. Sulfonamide-Based ET<sub>A</sub>/ET<sub>B</sub> Mixed Antagonists
Journal of Medicinal Chemistry 1997.0
Optimization of Substituted N-3-Benzylimidazoquinazolinone Sulfonamides as Potent and Selective PDE5 Inhibitors
Journal of Medicinal Chemistry 2000.0
Synthesis and Structure-Activity Relationships of Novel Naphthalenic and Bioisosteric Related Amidic Derivatives as Melatonin Receptor Ligands
Journal of Medicinal Chemistry 1994.0
Modifications and structure–activity relationships at the 2-position of 4-sulfonamidopyrimidine derivatives as potent endothelin antagonists
Bioorganic &amp; Medicinal Chemistry Letters 2002.0