Sulfonamides for treatment of endothelin-mediated disorders

• US 6,683,103 B2
• Filed: 12/20/2001
• Issued: 01/27/2004
• Est. Priority Date: 04/28/1997
• Status: Expired due to Fees

• Current Assignee: Encysive Pharmaceuticals Incorporated (Pfizer Inc.)
• Original Assignee: Encysive Pharmaceuticals Incorporated (Pfizer Inc.)
• Inventors: Wu, Chengde, Kogan, Timothy, Keller, Karin, Blok, Natalie
• Primary Examiner(s): OWENS, AMELIA A
• Application Number:
  US10/029,561
• Publication Number:
  US 20020091270A1
• Time in Patent Office: 768 Days
• Field of Search: 548/247, 548/240, 514/378, 424/451, 424/464, 424/489, 424/493
• US Class Current: 514/378
• CPC Class Codes: A61P 1/00 Drugs for disorders of the alimentary tract or the digestive system
• CPC Class Codes: A61P 1/04 for ulcers, gastritis or reflux esophagitis, e.g. antacids, inhibitors of acid secretion, mucosal protectants
• CPC Class Codes: A61P 11/00 Drugs for disorders of the respiratory system
• CPC Class Codes: A61P 11/06 Antiasthmatics
• CPC Class Codes: A61P 11/08 Bronchodilators
• CPC Class Codes: A61P 13/12 of the kidneys
• CPC Class Codes: A61P 15/00 Drugs for genital or sexual disorders for disorders of sex hormones A61P5/24; Contraceptives
• CPC Class Codes: A61P 17/02 for treating wounds, ulcers, burns, scars, keloids, or the like
• CPC Class Codes: A61P 27/02 Ophthalmic agents
• CPC Class Codes: A61P 27/06 Antiglaucoma agents or miotics
• CPC Class Codes: A61P 29/00 Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
• CPC Class Codes: A61P 37/00 Drugs for immunological or allergic disorders
• CPC Class Codes: A61P 43/00 Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
• CPC Class Codes: A61P 5/24 of the sex hormones
• CPC Class Codes: A61P 9/00 Drugs for disorders of the cardiovascular system
• CPC Class Codes: A61P 9/08 Vasodilators for multiple indications
• CPC Class Codes: A61P 9/10 for treating ischaemic or atherosclerotic diseases, e.g. antianginal drugs, coronary vasodilators, drugs for myocardial infarction, retinopathy, cerebrovascula insufficiency, renal arteriosclerosis
• CPC Class Codes: A61P 9/12 Antihypertensives
• CPC Class Codes: C07D 261/16 Benzene-sulfonamido isoxazoles
• CPC Class Codes: C07D 409/12 linked by a chain containing hetero atoms as chain links
• CPC Class Codes: C07D 413/12 : linked by a chain containing hetero atoms as chain links
• CPC Class Codes: C07D 413/14 : containing three or more hetero rings
• CPC Class Codes: C07D 417/14 : containing three or more hetero rings

Abstract

Thienylsulfonamides and their pharmaceutically acceptable derivatives, pharmaceutical compositions, articles of manufacture, combinations, lyophilized powders and methods for the treatment of endothelin diseases using these formulations and sulfonamides 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.

Claims

1. A compound of formula (I):

where Ar¹ is isoxazolyl and Ar² has the formula;

or a pharmaceutically acceptable derivative thereof, wherein;

R³ and R⁴ are independently selected from the group consisting of hydrogen, halo, cyano, cyanoalkyl, C(O)R⁴¹, alkyl, alkenyl, cycloalkyl and aryl, or together form alkylene;

W is O, NH or CH₂;

R⁵, R⁶ and R⁷ are each independently selected as in (i) or (ii), with the proviso that at most one of R⁵, R⁶ and R⁷ is hydrogen;

(i) R⁶ is hydrogen, unsubstituted alkyl, hydroxy, unsubstituted alkoxy, C(O)R⁴¹, carbamoyloxy or alkoxycarbonyloxy, and

R⁵ and R⁷ are each independently selected from hydrogen, unsubstituted alkyl, hydroxy, C(O)R⁴¹, carbamoyloxy and alkoxycarbonyloxy;

or

(ii) if at least one of R³ and R⁴ is not hydrogen, then any two may form alkylenedioxy, and the other is selected as in (i);

R⁴⁵ is selected from the group consisting of alkyl, C(O)R⁴¹, (CH₂)_xOH and CH(OH)(CH₂)_xCH₃ in which x is 0-6, S(O)_nR⁴¹ in which n is 0-2 and C(═

NR⁴³)R⁴¹;

R⁴¹ is alkyl, aryl, heteroaryl, aralkyl, heteroaralkyl, cycloalkyl, alkylamino, dialkylamino, arylamino, diarylamino, alkylsulfonylamino, arylsulfonylamino, alkylsulfonylalkylamino, alkylsulfonylarylamino, arylsulfonylalkylamino or arylsulfonylarylamino; and

R⁴³ is selected from hydroxy, alkoxy, alkyl and aryl, wherein

R⁴¹ and R⁴³ are unsubstituted or substituted with one or more substituents selected from Y, which is alkoxy, halide, pseudohalide, carboxyl, alkoxycarbonyl, aryloxycarbonyl or hydroxy, with the proviso that the compound is not N-(4-chloro-3-methyl-5-isoxazolyl)-2-(2,4,6-trimethylphenylaminocarbonyl)-thiophene-3-sulfonamide, N-(4-chloro-3-methyl-5-isoxazolyl)-2-(2,4,6-trimethyl)phenylacetyl-3-thiophenesulfonamide, N-(3,4-dimethyl-5-isoxazolyl)-2-[(2,4,6-trimethylphenoxy)carbonyl]thiophene-3-sulfonamide, N-(4-chloro-3-methyl-5-isoxazolyl)-2-[(2,4,6-trimethylphenoxy)carbonyl]thiophene-3-sulfonamide or N-(4-bromo-3-methyl-5-isoxazolyl)-2-[(2,4,6-trimethylphenoxy)-carbonyl]thiophene-3-sulfonamide.

2. The compound of claim 1, wherein Ar¹ is 3-isoxazolyl or 5-isoxazolyl.

3. The compound of claim 1, wherein:

R³ and R⁴ are each independently hydrogen, alkyl, halo, cyano, cyanomethyl, acetyl or cycloalkyl, or together form alkylene;

R⁵, R⁶ and R⁷ are each independently selected as in (i) or (ii), with the proviso that at most one of R⁵, R⁶ and R⁷ is hydrogen;

(i) R⁶ is hydrogen, unsubstituted alkyl, hydroxy, unsubstituted alkoxy, C(O)R⁴¹, carbamoyloxy or alkoxycarbonyloxy, and

R⁵ and R⁷ are each independently selected from hydrogen, unsubstituted alkyl, hydroxy, C(O)R⁴, carbamoyloxy or alkoxycarbonyloxy;

or

(ii) if at least one of R³ and R⁴ is not hydrogen, then any two may form methylenedioxy, and the other is selected as in (i);

x is 0 or 1;

n is 2;

R⁴¹ is alkyl, cycloalkyl, alkylamino, dialkylamino, arylamino, diarylamino, alkylsulfonylamino or arylsulfonylamino; and

R⁴³ is hydroxy or alkoxy.

4. The compound of claim 1, wherein:

Ar¹ is 4-chloro-3-methyl-5-isoxazolyl;

R³ and R⁴ are each independently hydrogen, methyl, cyclopropyl, fluoro, chloro, cyano, cyanomethyl or acetyl, or together form propylene;

R⁵, R⁶ and R⁷ are each independently selected from (i) or (ii), with the proviso that at most one of R⁵, R⁶ and R⁷ is hydrogen;

(i) R⁶ is selected from hydrogen, methyl, hydroxy, methoxy, acetyl, carbamoyloxy and methoxycarbonyloxy, and

R⁵ and R⁷ are each independently hydrogen, methyl, hydroxy, acetyl, carbamoyloxy and methoxycarbonyloxy;

or

(ii) if at least one of R³ and R⁴ is not hydrogen, then R⁶ and R⁷ may form methylenedioxy and R⁵ is selected as in (i); and

R⁴⁵ is acetyl, propanoyl, 2-methylpropanoyl, cyclopropylcarbonyl, benzoyl, cyclohexylcarbonyl, methyl, 1-hydroxy-1-ethyl, hydroxymethyl, methoxyacetyl, fluoroacetyl, carboxyacetyl, hydroxyacetyl, oximinoacetyl or SO₂R⁴¹.

5. The compound of claim 1 selected from the group consisting of:

N-(2-acetyl-4,6-dimethylphenyl)-3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-2-thiophenecarboxamide,

N-(2-benzoyl-4,6-dimethylphenyl)-3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2-hydroxyethanimidoyl)-4,6-dimethylphenyl)-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2,4-dimethyl-6-propionylphenyl)-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2-isobutyryl-4,6-dimethylphenyl)-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2-(cyclohexylcarbonyl)-4,6-dimethylphenyl)-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2-(cyclopropylcarbonyl)-4,6-dimethylphenyl)-2-thiophenecarboxamide,

3-(((3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-2-thienyl)carbonyl)amino)-2,4,6-trimethylphenyl carbamate,

3-(((3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-2-thienyl)carbonyl)amino)-2,4,6-trimethylphenyl methyl carbonate,

N-(4-chloro-3-methyl-5-isoxazolyl)-2-(2-(3-methoxy-2,4,6-trimethylphenyl)acetyl)-3-thiophenesulfonamide,

N-(4-chloro-3-methyl-5-isoxazolyl)-2-(2-(3-hydroxy-2,4,6-trimethylphenyl)acetyl)-3-thiophenesulfonamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2-(2-hydroxy-1-methylethyl)-4,6-dimethylphenyl)-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2-(2-hydroxy-ethyl)-4,6-dimethylphenyl)-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2-(2,6-diacetyl)-4-methylphenyl)-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2-(2-methoxyacetyl)-4,6-dimethylphenyl)-2-thiophenecarboxamide,

3-(2-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-2-thienyl)carbonyl)amino)-3,5-dimethylphenyl)-3-oxopropanoic acid,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2-glycolyl-4,6-dimethylphenyl)-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2,4-dimethyl-6-methylsulfonyl)phenyl)-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2,4-dimethyl-6-((methylamino)sulfonyl)phenyl)-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2,4-dimethyl-6-((dimethylamino)sulfonyl)phenyl)-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2,4-dimethyl-6-(((methylsulfonyl)amino)carbonyl)phenyl)-2-thiophenecarboxamide

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2-(2-fluoroacetyl)-4-6-dimethylphenyl)-2-thiophenecarboxamide,

N-(2-acetyl-4,6-dimethylphenyl)-3-(((4-chloro-3-methyl-5-isoxazolyl)aminosulfonyl)-5-methyl-2-thiophenecarboxamide,

N-(2-benzoyl-4,6-dimethylphenyl)-3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-5-methyl-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2-hydroxyethanimidoyl)-4,6-dimethylphenyl)-5-methyl-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2,4-dimethyl-6-propionylphenyl)-5-methyl-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2-isobutyryl-4,6-dimethylphenyl)-5-methyl-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2-(cyclohexylcarbonyl)-4,6-dimethylphenyl)-5-methyl-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2-(cyclopropylcarbonyl)-4,6-dimethylphenyl)-5-methyl-2-thiophenecarboxamide,

3-(((3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-2-(5-methylthienyl))carbonyl)amino)-2,4,6-trimethylphenyl carbamate,

3-(((3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-2-(5-methylthienyl))carbonyl)amino)-2,4,6-trimethylphenyl methyl carbonate,

N-(4-chloro-3-methyl-5-isoxazolyl)-2-(2-(3-methoxy-2,4,6-trimethylphenyl) acetyl)-5-methyl-3-thiophenesulfonamide,

N-(4-chloro-3-methyl-5-isoxazolyl)-2-(2-(3-hydroxy-2,4,6-trimethylphenyl)acetyl)-5-methyl-3-thiophenesulfonamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2(2-hydroxy-1-methylethyl)-4,6-dimethylphenyl)-5-methyl-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2-(2-hydroxy-1-4,6-dimethylphenyl)-5-methyl-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2-(2,6-diacetyl)-4-methylphenyl)-5-methyl-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2-(2-methoxyacetyl)-4,6-dimethylphenyl)-5-methyl-2-thiophenecarboxamide,

3-(2-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-2-(5-methylthienyl))carbonyl)amino)-3,5-dimethylphenyl)-3-oxopropanoic acid,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2-glycolyl-4,6-dimethylphenyl)-5-methyl-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2,4-dimethyl-6-methylsulfonyl)phenyl)-5-methyl-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2,4-dimethyl-6-((methylamino)sulfonyl)phenyl)-5-methyl-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2,4-dimethyl-6-((dimethylamino)sulfonyl)phenyl)-5-methyl-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2,4-dimethyl-6-(((methylsulfonyl)amino)carbonyl)phenyl)-5-methyl-2-thiophenecarboxamide.

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2-(2-fluoroacetyl)-4,6-dimethylphenyl)-5-methyl-2-thiophenecarboxamide,

N-(6-acetyl-4-methyl-1,3-benzodioxol-5-yl)-3-(((4-chloro-3-methyl-5-isoxazolyl)aminosulfonyl)-5-methyl-2-thiophenecarboxamide,

N-(4-acetyl-6-methyl-1,3-benzodioxol-5-yl)-3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-5-methyl-2-thiophenecarboxamide,

N-(2-acetyl-4,6-dimethylphenyl)-3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-4-methyl-2-thiophenecarboxamide,

N-(2-benzoyl-4,6-dimethylphenyl)-3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-4-methyl-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2-hydroxyethanimidoyl)-4,6-dimethylphenyl)-4-methyl-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2,4-dimethyl-6-propionylphenyl)-4-methyl-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl) amino)sulfonyl)-N-(2-isobutyryl-4,6-dimethylphenyl)-4-methyl-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2-(cyclohexylcarbonyl)-4,6-dimethylphenyl)-4-methyl-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2-(cyclopropylcarbonyl)-4,6-dimethylphenyl)-4-methyl-2-thiophenecarboxamide,

3-(((3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-2-(4-methylthienyl))carbonyl)amino)-2,4,6-trimethylphenyl carbamate,

3-(((3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-2-(4-methylthienyl))carbonyl)amino)-2,4,6-trimethylphenyl methyl carbonate,

N-(4-chloro-3-methyl-5-isoxazolyl)-2-(2-(3-methoxy-2,4,6-trimethylphenyl)acetyl)-4-methyl-3-thiophenesulfonamide,

N-(4-chloro-3-methyl-5-isoxazolyl)-2-(2-(3-hydroxy-2,4,6-trimethylphenyl)acetyl)-4-methyl-3-thiophenesulfonamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2-(2-hydroxy-1-methylethyl)-4,6-dimethylphenyl)-4-methyl-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2-(2-hydroxy-ethyl)-4,6-dimethylphenyl)-4-methyl-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2-(2,6-diacetyl)-4-methylphenyl)-4-methyl-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2-(2-methoxyacetyl)-4,6-dimethylphenyl)-4-methyl-2-thiophenecarboxamide,

3-(2-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-2-(4-methylthienyl))carbonyl)amino)-3,5-dimethylphenyl)-3-oxopropanoic acid,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2-glycolyl-4,6-dimethylphenyl)-4-methyl-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2,4-dimethyl-6-methylsulfonyl)phenyl)-4-methyl-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2,4-dimethyl-6-((methylamino)sulfonyl)phenyl)-4-methyl-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2,4-dimethyl-6-((dimethylamino)sulfonyl)phenyl)-4-methyl-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2,4-dimethyl-6-(((methylsulfonyl)amino)carbonyl)phenyl)-4-methyl-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2-(2-fluoroacetyl)-4,6-dimethylphenyl)-4-methyl-2-thiophenecarboxamide,

N-(6-acetyl-4-methyl-1,3-benzodioxol-5-yl)-3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-4-methyl-2-thiophenecarboxamide,

N-(4-acetyl-6-methyl-1,3-benzodioxol-5-yl)-3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-4-methyl-2-thiophenecarboxamide,

N-(2-acetyl-4,6-dimethylphenyl)-3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-4,5-dimethyl-2-thiophenecarboxamide,

N-(2-benzoyl-4,6-dimethylphenyl)-3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-4,5-dimethyl-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2-hydroxyethanimidoyl)-4,6-dimethylphenyl)-4,5-dimethyl-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2,4-dimethyl-6-propionylphenyl)-4,5-dimethyl-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2-isobutyryl-4,6-dimethylphenyl)-4,5-dimethyl-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2-(cyclohexylcarbonyl)-4,6-dimethylphenyl)-4,5-dimethyl-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2-(cyclopropylcarbonyl)-4,6-dimethylphenyl)-4,5-dimethyl-2-thiophenecarboxamide,

3-(((3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-2-(4,5-dimethylthienyl))carbonyl)amino)-2,4,6-trimethylphenyl carbamate,

3-(((3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-2-(4,5-dimethylthienyl))carbonyl)amino)-2,4,6-trimethylphenyl methyl carbonate,

N-(4-chloro-3-methyl-5-isoxazolyl)-2-(2-(3-methoxy-2,4,6-trimethylphenyl)acetyl)-4,5-dimethyl-3-thiophenesulfonamide,

N-(4-chloro-3-methyl-5-isoxazolyl)-2-(2-(3-hydroxy-2,4,6-trimethylphenyl)acetyl)-4,5-dimethyl-3-thiophenesulfonamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2-(2-hydroxy-1-methylethyl)-4,6-dimethylphenyl)-4,5-dimethyl-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2-(2-hydroxy-ethyl)-4,6-dimethylphenyl)-4,5-dimethyl-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2(2,6-diacetyl)-4-methylphenyl)-4,5-dimethyl-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2-(2-methoxyacetyl)-4,6-dimethylphenyl)-4,5-dimethyl-2-thiophenecarboxamide,

3-(2-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-2-(4,5-dimethylthienyl))carbonyl)amino)-3,5-dimethylphenyl)-3-oxopropanoic acid,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2-glycolyl-4,6-dimethylphenyl)-4,5-dimethyl-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2,4-dimethyl-6-methylsulfonyl)phenyl)-4,5-dimethyl-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2,4-dimethyl-6-((methylamino)sulfonyl)phenyl)-4,5-dimethyl-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2,4-dimethyl-6-((dimethylamino)sulfonyl)phenyl)-4,5-dimethyl-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2,4-dimethyl-6-(((methylsulfonyl)amino)carbonyl)phenyl)-4,5-dimethyl-2-thiophenecarboxamide,

3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-N-(2-(2-fluoroacetyl)-4,6-dimethylphenyl)-4,5-dimethyl-2-thiophenecarboxamide,

N-(6-acetyl-4-methyl-1,3-benzodioxol-5-yl)-3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-4,5-dimethyl-2-thiophenecarboxamide,

N-(4-acetyl-6-methyl-1,3-benzodioxol-5-yl)-3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-4,5-dimethyl-2-thiophenecarboxamide,

N-(2-acetyl-4,6-dimethylphenyl)-3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-5-cyclopropyl-2-thiophenecarboxamide,

5-acetyl-(N-(2-acetyl-4,6-dimethylphenyl)-3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-2-thiophenecarboxamide,

N-(2-acetyl-4,6-dimethylphenyl)-3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-5-cyano-2-thiophenecarboxamide,

N-(2-acetyl-4,6-dimethylphenyl)-3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-5-(cyanomethyl)-2-thiophenecarboxamide,

N-(2-acetyl-4,6-dimethylphenyl)-3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-5-fluoro-2-thiophenecarboxamide,

N-(2-acetyl-4,6-dimethylphenyl)-3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-5-chloro-2-thiophenecarboxamide, and

N-2-acetyl-4,6-dimethylphenyl)-5-chloro-3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-4,5,6,7-tetrahydro-1-benzothiophene-2-carboxamide.

6. The compound of claim 5 that is a sodium salt.

7. The compound of claim 6 selected from the group consisting of N-(2-acetyl-4,6-dimethylphenyl)-3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-2-thiophenecarboxamide and N-(2-acetyl-4,6-dimethylphenyl)-3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-5-methyl-2-thiophenecarboxamide.

8. The compound of claim 1 selected from the group consisting of N-(2-acetyl-4,6-dimethylphenyl)-3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-2-thiophenecarboxamide and N-(2-acetyl-4,6-dimethylphenyl)-3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-5-methyl-2-thiophenecarboxamide.

9. The compound of claim 1, wherein R³ and R⁴ are hydrogen or methyl.

10. The compound of claim 1, wherein R³ and R⁴ are methyl.

11. The compound of claim 1, wherein R³ is methyl and R⁴ is hydrogen.

12. The compound of claim 1, wherein R⁴ is methyl and R³ is hydrogen.

13. A pharmaceutical composition, comprising the compound of claim 1 in a pharmaceutically acceptable vehicle.

14. The composition of claim 13 that is formulated for oral administration.

15. The composition of claim 13 that is formulated for parenteral administration.

16. The composition of claim 13 that is formulated as a tablet or capsule.

17. A process for preparing a lyophilized powder, comprising:

mixing a salt of the compound of claim 1 with a sufficient amount of a solution containing a sugar to produce a solution thereof;

sterile-filtering the resulting solution; and

lyophilizing the filtered solution to produce a powder.

18. The process of claim 17, wherein the sugar is dextrose or sorbitol.

19. A lyophilized powder produced by the method of claim 17.

20. The powder of claim 19, wherein:

the pharmaceutically-acceptable salt is a calcium, lithium, magnesium, potassium, sodium hydrogen phosphate, disodium phosphate, sodium or zinc salt.

21. The powder of claim 19, wherein the pharmaceutically-acceptable salt is a sodium salt.

22. A combination, comprising the powder of claim 19 and a sterile vessel containing a single dosage or multiple dosage amount thereof.

23. The combination of claim 22, wherein the vessel is an ampoule, vial or syringe.

24. A pharmaceutical composition formulated for single dosage or multiple dosage administration prepared by mixing a single dosage of the powder of claim 19 with an aqueous medium.

25. The pharmaceutical composition of claim 24, wherein the final concentration of the sulfonamide salt is between about 1 mg/mL and about 500 mg/mL.

26. A combination comprising:

a sterile vial containing the pharmaceutical composition of claim 24.

27. The combination of claim 26, wherein the amount is for single dose administration.

28. The combination of claim 27, wherein the sterile vial also contains an amount of sterile water for injection wherein the final concentration of the sulfonamide sodium salt is 12.5 mg/mL or 25 mg/mL.

29. The composition of claim 16, comprising:

about 50-100% by weight of the compound;

about 0-25% by weight of an diluent or a binder;

about 0-10% by weight of a disintegrant; and

about 0-5% of a lubricant.

30. The composition of claim 29, wherein:

the binder is microcrystalline cellulose;

the diluent is lactose;

the disintegrant is microscarmellose sodium or sodium starch glycolate; and

the lubricant is magnesium stearate.

31. A method for the treatment of endothelin-mediated diseases, comprising administering an effective amount of the composition of claim 13, wherein the effective amount is sufficient to ameliorate one or more of the symptoms of the disease.

32. The method of claim 31, wherein the compound is a sodium salt of N-(2-acetyl-4,6-dimethylphenyl)-3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-2-thiophenecarboxamide or N-(2-acetyl-4,6-dimethylphenyl)-3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-5-methyl-2-thiophenecarboxamide.

33. The method of claim 31, wherein the disease is selected from the group consisting of hypertension, cardiovascular disease, asthma, pulmonary hypertension, inflammatory diseases, ophthalmologic disease, menstrual disorders, obstetric conditions, wounds, gastroenteric disease, renal failure, immunosuppressant-mediated renal vasoconstriction, erythropoietin-mediated vasoconstriction, endotoxin shock, pulmonary hypertension, anaphylactic shock and hemorrhagic shock.

34. An article of manufacture, comprising packaging material and a salt of the compound of claim 1 within the packaging material, wherein the compound is effective for antagonizing the effects of endothelin, ameliorating the symptoms of an endothelin-mediated disorder, or inhibiting the binding of an endothelin peptide to an ET receptor with an IC₅₀ of less than about 10 μ

M, and the packaging material includes a label that indicates that the compound salt is used for antagonizing the effects of endothelin, inhibiting the binding of endothelin to an endothelin receptor or treating an endothelin-mediated disorder.

35. The article of manufacture of claim 34, wherein the salt is a sodium salt.

36. The article of manufacture of claim 34, wherein the compound is selected from the group consisting of N-(2-acetyl-4,6-dimethylphenyl)-3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-2-thiophenecarboxamide and N-(2-acetyl-4,6-dimethylphenyl)-3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-5-methyl-2-thiophenecarboxamide or salts thereof.

37. The powder of claim 19, wherein the compound is a sodium salt of N-(2-acetyl-4,6-dimethylphenyl)-3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-2-thiophenecarboxamide or N-(2-acetyl-4,6-dimethylphenyl)-3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-5-methyl-2-thiophenecarboxamide.

38. The composition of claim 29, wherein the compound is a sodium salt of N-(2-acetyl-4,6-dimethylphenyl)-3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-2-thiophenecarboxamide or N-(2-acetyl-4,6-dimethylphenyl)-3-(((4-chloro-3-methyl-5-isoxazolyl)amino)sulfonyl)-5-methyl-2-thiophenecarboxamide.

41. A method for the treatment of endothelin-mediated diseases, comprising administering an effective amount of the compound of claim 1, wherein the effective amount is sufficient to ameliorate one or more of the symptoms of the disease.

42. The compound of claim 1, wherein Ar¹ has the formula:

in which R¹ and R² are either (i), (ii) or (iii) as follows;

(i) R¹ and R² are each independently selected from H, NH₂, NO₂, halide, pseudohalide, alkyl, alkenyl, alkynyl, aryl, arylalkyl, heteroaryl, alkoxy, alkylamino, alkylthio, alkyloxy, haloalkyl, alkylsulfinyl, alkylsulfonyl, aryloxy, arylamino, arylthio, arylsulfinyl, arylsulfonyl, haloalkyl, haloaryl, alkoxycarbonyl, alkylcarbonyl, aminocarbonyl, arylcarbonyl, formyl, substituted or unsubstituted amido, substituted or unsubstituted ureido, in which the alkyl, alkenyl and alkynyl portions contain from 1 up to about 14 carbon atoms and are either straight or branched chains or cyclic, and the aryl portions contain from about 4 to about 16 carbons, except that R² is not halide or pseudohalide;

or,

(ii) R¹ and R² together form —

(CH₂)_n, where n is 3 to 6;

or,

(iii) R¹ and R² together form 1,3-butadienyl.

43. The compound of claim 42, wherein R¹ is halide or methyl;

and R² is methyl.

44. The compound of claim 42, wherein R¹ and R² are each methyl.

39. An alkali metal salt of 4-chloro-3-methyl-5-(2-(2-(6-methylbenzo[d][1,3]dioxol-5-yl)acetyl)-3-thienylsulfonamido)isoxazole prepared by a process comprising the steps of:

(a) dissolving the free sulfonamide in an organic solvent;

(b) washing the dissolved free sulfonamide with a saturated solution of a salt of the alkali metal; and

(c) recovering the alkali metal salt of the sulfonamide.

40. The alkali metal salt of claim 39 that is the sodium salt.