Sulfonyl amide inhibitors of calcium channel function

1. A compound of the formula I,

its stereoisomers, solvates, and salts, thereof, wherein:

a is R 1 , >C 3 alkyl, substituted alkyl, cycloalkyl or aryl;

R 1 is —C(O)NR 2 R 3 or C(O)OR 4 —;

R 2 and R 3 are independently

(a) hydrogen;

(b) alkyl, substituted alkyl, cycloalkyl, aryl, (aryl)alkyl, or (cycloalkyl)alkyl,

b is CR 13 R 14 ;

c is aryl;

R 4 is hydrogen, alkyl, substituted alkyl, cycloalkyl, aryl, (aryl)alkyl or (cycloalkyl)alkyl;

-d-(CH 2 ) m -f is selected from

l, m, and n are independently 0 to 4;

R a , R 13 and R 14 are independently hydrogen, cyano, nitro, halogen, alkyl, substituted alkyl, aryl, cycloalkyl, —OR 15 , —SR 15 , —OC(═O)R 15 , —C(═O)R 15 , —CO 2 R 15 , —C(═O)NR 16 R 17 , —NR 16 R 17 , —S(═O)R 15 ; or —SO 2 R 15 ;

or R 13 and R 14 are taken together to form oxo;

R 15 , R 16 and R 17 are independently hydrogen, alkyl, substituted alkyl, cycloalkyl, aryl, (aryl)alkyl, or (cycloalkyl)alkyl,; and

R 21 and R 22 are independently hydrogen or C 1-4 alkyl;

provided that:

when c is phenyl and R a is located para to the sulfoxide substituent; R a is not chloro or —OMe; and

when a is >C 3 alkyl, n is 0.

2. A compound of claim 1 , its stereoisomers, solvates and salts, thereof, wherein:

a is C 4-8 alkyl, aryl, or R 1 ; and

R 13 and R 14 are independently hydrogen or C 1-4 alkyl.

3. A compound of claim 1 , having the structure

its stereoisomers, solvates, and salts, thereof, wherein:

R b , is hydrogen, cyano, nitro, halogen, alkyl, substituted alkyl, aryl, cycloalkyl, —OR 18 , —SR 18 , —OC(═O)R 18 , —C(═O)R 18 , —CO 2 R 18 , —C(═O)NR 19 R 20 , —NR 19 R 20 , —S(═O)R 18 , or —SO 2 R 18 ;

R 18 , R 19 and R 20 are independently hydrogen; alkyl, substituted alkyl, cycloalkyl, aryl, (aryl)alkyl, or (cycloalkyl)alkyl;

r is 0, 1, 2 or 3; and

R 13 and R 14 are independently hydrogen or CH 3 .

4. A compound of claim 1 having the structure:

their stereoisomers, solvates, and salts, thereof, wherein:

R 2 is hydrogen or C 1-4 alkyl;

R 3 is alkyl, cycloalkyl, (cycloalkyl)alkyl, or aminoalkyl; and

R 4 is selected from hydrogen; alkyl, cycloalkyl, (aryl)alkyl, (cycloalkyl)alkyl.

5. A compound of claim 1 , its stereoisomers, solvates, and salts, thereof, wherein -a-(b) n - is selected from:

6. A compound of claim 1 , its stereoisomers, solvates, and salts, thereof, wherein:

c is selected from:

7. A compound of claim 1 , its stereoisomers, solvates, and salts, thereof, selected from the following:

Isopropyl{(3-chlorophenyl)[(3-nitrophenyl)sulfonyl]amino}acetate;

Isopropyl[[(3-aminophenyl)sulfonyl](3-chlorophenyl)amino]acetate;

Isopropyl[(3-chlorophenyl)({3-[(3-phenoxybenzoyl)amino]phenyl}sulfonyl)amino]acetate;

Isopropyl[(3-chlorophenyl)({3-[(3,3-diphenylpropanoyl)amino]phenyl}sulfonyl)amino]acetate;

Isopropyl[{[3-(acetylamino)phenyl]sulfonyl}(3-chlorophenyl)amino]acetate;

Benzyl (2R)-2-{[(3-{[(3-chlorophenyl)(2-isopropoxy-2-oxoethyl)amino]sulfonyl}phenyl)amino]carbonyl}pyrrolidine-1-carboxylate;

Benzyl (2S)-2-{[(3-{[(3-chlorophenyl)(2-isopropoxy-2-oxoethyl)amino]sulfonyl}phenyl)amino]carbonyl}pyrrolidine-1-carboxylate;

Isopropyl[{[3-({[[(benzyloxy)carbonyl](methyl)amino]acetyl}amino)phenyl]sulfonyl}(3-chlorophenyl)amino]acetate;

Isopropyl[({3-[({[(benzyloxy)carbonyl]amino}acetyl)amino]phenyl}sulfonyl)(3-chlorophenyl)amino]acetate;

Isopropyl[{[3-({[1-(4-chlorobenzyl)-5-oxopyrrolidin-3-yl]carbonyl}amino)phenyl]sulfonyl}(3-chlorophenyl)amino]acetate;

Isopropyl[({3-[(3-{[(benzyloxy)carbonyl]amino}propanoyl)amino]phenyl}sulfonyl)(3-chlorophenyl)amino]acetate;

Isopropyl[{[3-({4-[(benzylsulfonyl)amino]benzoyl}amino)phenyl]sulfonyl}(3-chlorophenyl)amino]acetate;

Isopropyl ((3-chlorophenyl){[3-({[(phenylacetyl)amino]acetyl}amino)phenyl]sulfonyl}amino)acetate;

Isopropyl[(3-chlorophenyl)({3-[(phenylacetyl)amino]phenyl}sulfonyl)amino]acetate;

Isopropyl[(3-chlorophenyl)({3-[(3-phenylpropanoyl)amino]phenyl}sulfonyl)amino]acetate;

Isopropyl[(3-chlorophenyl)({3-[(4-phenylbutanoyl)amino]phenyl}sulfonyl)amino]acetate;

Isopropyl[[(3-{[4-(benzyloxy)butanoyl]amino}phenyl)sulfonyl](3-chlorophenyl)amnino]acetate;

Isopropyl[({3-[(2-{[(benzyloxy)carbonyl]amino}-2-methylpropanoyl)amino]phenyl}sulfonyl)(3-chlorophenyl)amino]acetate;

Isopropyl{(3-chlorophenyl)[(3-{[(4-isopropylphenoxy)acetyl]amino}phenyl)sulfonyl]amino}acetate;

Isopropyl[[(3-{[(3-chlorophenoxy)acetyl]amino}phenyl)sulfonyl](3-chlorophenyl)amino]acetate;

Isopropyl[{[3-({[(tert-butoxycarbonyl)amino]acetyl}amino)phenyl]sulfonyl}(3-chlorophenyl)amino]acetate;

Isopropyl{(3-chlorophenyl)[(3-{[3-(1H-indol-3-yl)propanoyl]amino}phenyl)sulfonyl]amino}acetate;

Isopropyl[({3-[((2R)-3-(benzyloxy)-2-{[(benzyloxy)carbonyl]amino}propanoyl)amino]phenyl}sulfonyl)(3-chlorophenyl)amino]acetate;

Isopropyl[[(3-{[(4-chlorophenoxy)acetyl]amino}phenyl)sulfonyl](3-chlorophenyl)amino]acetate;

Isopropyl[[(3-{[(2-chlorophenoxy)acetyl]amino}phenyl)sulfonyl](3-chlorophenyl)amino]acetate;

Isopropyl[[(3-{[(4-tert-butylphenoxy)acetyl]amino}phenyl)sulfonyl](3-chlorophenyl)amino]acetate;

2-Isopropoxy-2-oxoethyl 3-{[(3-chlorophenyl)(2-isopropoxy-2-oxoethyl)amino]sulfonyl}benzoate;

Methyl[{[3-({[[(benzyloxy)carbonyl](methyl)amino]acetyl}amino)phenyl]sulfonyl}(3-chlorophenyl)amino]acetate;

Ethyl[{[3-({[[(benzyloxy)carbonyl](methyl)amnino]acetyl}amino)phenyl]sulfonyl}(3-chlorophenyl)amino]acetate;

tert-Butyl[{[3-({[[(benzyloxy)carbonyl](methyl)amino]acetyl}amino)phenyl]sulfonyl}(3-chlorophenyl)amino]acetate;

Benzyl[{[3-({[[(benzyloxy)carbonyl](methyl)amino]acetyl}amino)phenyl]sulfonyl}(3-Benzyl{2-[(3-{[benzyl(3-chlorophenyl)amino]sulfonyl}phenyl)amnino]-2-oxoethyl}methylcarbamate;

Benzyl{2-[(3-{[(3-chlorophenyl)(4-methylpentyl)amino]sulfonyl}phenyl)amino]-2-oxoethyl}methylcarbamate;

[{[3-({[[(Benzyloxy)carbonyl](methyl)amino]acetyl}amino)phenyl]sulfonyl}(3-chlorophenyl)amino]acetic acid;

tert-Butyl ((3-chlorophenyl){[3-({[methyl(phenoxyacetyl)amino]acetyl}amino)phenyl]sulfonyl}amino)acetate;

tert-Butyl[(3-chlorophenyl)({3-[({methyl[(4-methylphenoxy)acetyl]amino}acetyl)amino]phenyl}sulfonyl)amino]acetate;

tert-Butyl[(3-chlorophenyl)({3-[({methyl[(3-methylphenoxy)acetyl]amino}acetyl)amino]phenyl}sulfonyl)amino]acetate;

tert-Butyl[(3-chlorophenyl)({3-[({methyl[(2-methylphenoxy)acetyl]amino}acetyl)amino]phenyl}sulfonyl)amino]acetate;

tert-Butyl ((3-chlorophenyl){[3-({[[(9H-fluoren-9-ylmethoxy)carbonyl](methyl)amino]acetyl}amino)phenyl]sulfonyl}amino)acetate;

tert-Butyl{(3-chlorophenyl)[(3-{[(methylamino)acetyl]amino}phenyl)sulfonyl]amino}acetate;

3-{[(2-tert-Butoxy-2-oxoethyl)(3-chlorophenyl)amino]sulfonyl}benzoic acid;

tert-Butyl[{[3-({[3-(benzylamino)-3-oxopropyl]amino}carbonyl)phenyl]sulfonyl}(3-chlorophenyl)amino]acetate;

tert-Butyl[(3-chlorophenyl)({3-[({3-oxo-3-[(2-phenylethyl)amino]propyl}amino)carbonyl]phenyl}sulfonyl)amino]acetate;

tert-Butyl[[(3-{[(2-{[(benzyloxy)carbonyl]amino}ethyl)amino]carbonyl}phenyl)sulfonyl](3-chlorophenyl)amino]acetate;

tert-Butyl[[(3-{[(3-{[(benzyloxy)carbonyl]amino}propyl)amino]carbonyl}phenyl)sulfonyl](3-chlorophenyl)amino]acetate;

tert-Butyl[({3-[({2-[(4-chlorobenzoyl)amino]ethyl}amino)carbonyl]phenyl}sulfonyl)(3-chlorophenyl)amino]acetate;

tert-Butyl{(3-chlorophenyl)[(3-{[(3,3-diphenylpropyl)amino]carbonyl}phenyl)sulfonyl]amino}acetate;

benzyl (2-{[3-({(3-chlorophenyl)[2-(cyclohexylamino)-2-oxoethyl]amino}sulfonyl)phenyl]amino}-2-oxoethyl)methylcarbamate;

Benzyl (2-{[3-({(3-chlorophenyl)[2-(isopropylamino)-2-oxoethyl]amino}sulfonyl)phenyl]amino}-2-oxoethyl)methylcarbamate;

Benzyl{2-[(3-{[(3-chlorophenyl)(2-{[2-(dimethylamino)ethyl]amino}-2-oxoethyl)amino]sulfonyl}phenyl)amino]-2-oxoethyl}methylcarbamate;

tert-Butyl[{[3-({[[(benzyloxy)carbonyl](methyl)amino]acetyl}amino)phenyl]sulfonyl}(4-chlorophenyl)amino]acetate;

tert-Butyl[{[3-({[[(benzyloxy)carbonyl](methyl)amino]acetyl}amino)phenyl]sulfonyl}(2-chlorophenyl)amino]acetate;

tert-Butyl[{[3-({[[(benzyloxy)carbonyl](methyl)amino]acetyl}amino)phenyl]sulfonyl}(phenyl )amino]acetate;

tert-Butyl[{[3-({[[(benzyloxy)carbonyl](methyl)amino]acetyl}amino)phenyl]sulfonyl}(3,5-dichlorophenyl)amino]acetate;

tert-Butyl{{[3-({[[(benzyloxy)carbonyl](methyl)amino]acetyl}amino)phenyl]sulfonyl}[3-(trifluoromethyl)phenyl]amino}acetate; and

tert-Butyl[{[3-({[[(benzyloxy)carbonyl](methyl)amino]acetyl}amino)phenyl]sulfonyl}(3-cyanophenyl)amino]acetate.

8. A pharmaceutical composition, comprising: a pharmaceutically acceptable carrier and a compound of claim 1 .

9. A pharmaceutical composition, comprising: a pharmaceutically acceptable carrier and a compound of claim 4 .