Compounds as cannabinoid receptor ligands

1. A compound of formula (I)

or a pharmaceutically acceptable salt thereof, wherein

L is C═O, C═S, S(O) 2 , or C═NCN;

R 1 is alkyl, alkenyl, alkynyl, —(CR a R b ) m —OH, —(CR a R b ) m —O(alkyl), —(CR a R b ) m —CN, haloalkyl, or G 1 ;

R 2 is alkyl, alkenyl, alkynyl, G 1 , —C(R Zb )═NO(R 1 e), —O(R Za ), —N(R Z1 )(R Z2b ), —(CR a R b ) m —N 3 , —(CR a R b ) m —CN, haloalkyl, —(CR a R b ) m —O(R Za ), —(CR a R b ) m —S(R Zb ), —(CR a R b ) m —C(O)O(R Zb ), (CR a R b ) m —C(O)N(R Z1 )(R Z2a ), —(CR a R b ) m —SO 2 N(R Z1 )(Z 2a ), —(CR a R e ) m —C(O)(R Zb ), —(CR a R b ) m —SO 2 (R Zd )—SO 2 (R Zd ), —(CR a R b ) m —C(R Zb )═NO(R Z1 ), —(CR a R b ) m —N(R Z1 )(R Z2b ), or —(CR a R b ) m -G 1 ;

R 3 is hydrogen, alkyl, halogen, —CN, -G 2 , haloalkyl, or —(CR a R b ) m -G 2 ;

R 4 is alkyl, alkenyl, alkynyl, —(CR a R b ) n —CN, —(CR a R b ) n —OH, —(CR a R b ) n —O(alkyl), haloalkyl, G 2 , or —(CR a R b ) m -G 2 ; or

R 2 and R 3 , or R 3 and R 4 , together with the atoms to which they are attached, form a five-, six-, or seven-membered monocyclic ring containing zero or one additional double bond, zero or one additional heteroatom selected from O, S, N, and N(H), each said ring is independently unsubstituted or substituted with 1, 2, 3, 4, or 5 substituents (R 21 ) selected from the group consisting of oxo, alkyl, alkenyl, alkynyl, halogen, —CN, —O(R 1a ), —C(O)OH, —C(O)O(alkyl), —C(O)(R 1a ), —N(R Z3 )(R 3a ), —N(R 3a )C(O)R 1a , —N(R 3a )C(O)O(R 1a ), —N(R 3a )C(O)N(e)(Z Z3 )(R 3a ), —N(R 3a )S(O) 2 (R 2a ), —N(R 3a )S(O) 2 N(R Z3 )(R 3a ), —SO 2 (R 2a ), —C(O) N(R Z3 )(R 3a ), —S(O) 2 N(R Z3 )(R 3a ), —(CR 1g R 1h ) u -G 2 , —(CR 1g R 1h ) u —CN, —(CR 1g R 1h ) u —O(R 1a ), and haloalkyl, two adjacent or non-adjacent atoms of each of said rings are optionally linked by an alkylene bridge of one, two, three, or four carbon atoms; and two substituents (R 21 ) on the same carbon atom, together with said carbon atom, optionally form a 3-6 membered monocyclic ring containing 0, 1, or 2 heteroatoms selected from O, S, and N(H);

R Za , at each occurrence, is independently hydrogen, alkyl, haloalkyl, —(CR c R d ) p —O(alkyl), G 1 , —(CR c R d ) q —CN, or —(CR c R d ) q -G 1 ;

R Zb , at each occurrence, is independently hydrogen, alkyl, haloalkyl, G 1 , or —(CR c R d ) q -G 1 ;

R Z1 , at each occurrence, is independently hydrogen, alkyl, or haloalkyl;

R Z2a , at each occurrence, is independently hydrogen, alkyl, haloalkyl, G 1 , or —(CR c R d ) q -G 1 , or

R Z2b , at each occurrence, is independently hydrogen, alkyl, haloalkyl, G 1 , —C(O)R Zc , —C(O)OR Zc , —C(O)N(R Z1 )(R Zc ), —S(O) 2 R Zd , —S(O) 2 N(R Z1 )(R Zc ), or —(CR c R d ) q -G 1 ,

R Zc , at each occurrence, is independently hydrogen, alkyl, haloalkyl, G 1 , or —(CR e R f ) t -G 1 ;

R Zd , at each occurrence, is independently alkyl, haloalkyl, G 1 , or —(CR e R f ) t -G 1 ;

G 1 , at each occurrence, is aryl, heteroaryl, cycloalkyl, cycloalkenyl, or heterocycle, wherein each G 1 is independently unsubstituted or substituted with 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkyl, alkenyl, alkynyl, halogen, —CN, oxo, -G 2 , —NO 2 , —C(R Z3 )═N—O(R 1a ), —OR 1a , —O—(CR 1g R 1h ) u —CN, —OC(O)R 1a , —OC(O)N(R Z3 )(R 3a ), —O—(CR 1g R 1b )CON(R Z3 )(R 3a ), —O—(CR 1g R 1h ) u —SO 2 N(R Z3 )(R 3a ), —SR 1a , —S(O) 2 R 2a , —S(O) 2 N(R Z3 )(R 3a ), —C(O)R 1a , —C(O)OR 1a , —C(O)N(R Z3 )(R 3a ), —N(R Z3 )(R 3a ), —N(R Z3 )C(O)R 1a , —N(R Z3 )S(O) 2 R 2a , —N(R Z3 )C(O)O(R 1a ), —N(R Z3 )C(O)N(R Z3 )(R 3a ), —(CR 1g R 1h ) u —NO 2 , —(CR 1g R 1h ) u —OR 1a , —(CR 1g R 1h ) u —OC(O)R 1a , —(CR 1g R 1h ) u —C(O)N(R Z3 )(R 3a ), —(CR 1g R 1h ) u —SR 1a , —(CR 1g R 1h ) u —S(O) 2 R 2a , —(CR 1g R 1h ) u —S(O) 2 N(R Z3 )(R 3a ), —(CR 1g R 1h ) u —C(O)R 1a , —(CR 1g R 1h ) u —C(O)OR 1a , —(CR 1g R 1b ) u —C(O)N(R Z3 )(R 3a ), —(CR 1g R 1h ) u —N(R Z3 )(R 3a ), —(CR 1g R 1h ) u —N(R Z3 )C(O)R 1a , —(CR 1g R 1h ) u —N(R Z3 )S(O) 2 R 2a , —(CR 1g R 1h ) u —N(R Z3 )C(O)O(R 1a ), —(CR 1g R 1h ) u —N(R Z3 )C(O)N(R Z3 )(R 3a ), —(CR 1g R 1h ) u -G 2 , —(CR 1g R 1h ) u —CN, and haloalkyl;

R 1a and R 3a , at each occurrence, is independently hydrogen, alkyl, haloalkyl, G 2 , or —(CR k R x ) v -G 2 ;

R 2a , at each occurrence, is independently alkyl, haloalkyl, G 2 , or —(CR k R x ) v -G 2 ;

G 2 , at each occurrence, is aryl, heteroaryl, cycloalkyl, cycloalkenyl, or heterocycle, wherein each G 2 is independently unsubstituted or substituted with 1, 2, 3, 4, or 5 substituents selected from the group consisting of alkyl, alkenyl, alkynyl, halogen, —CN, oxo, —NO 2 , —OR 1b , —OC(O)R 1b , —OC(O)N(R Z4 )(R 3b ), —SR 1b , —S(O) 2 R 2b , —S(O) 2 N(R Z4 )(R 3b ), —C(O)R 1b , —C(O)OR 1b , —C(O)N(R Z4 )(R 3b ), —N(R Z4 )(R 3b ), —N(R Z4 )C(O)R 1b , —N(R Z4 )C(O)O(R 1b ), —N(R Z4 )C(O)N(R Z4 )(R 3b ), —(CR 2g R 2h ) w —NO 2 , —(CR 2g R 2h ) w —OR 1b , —(CR 2g R 2h ) w —OC(O)R 1b , —(CR 2g R 2h ) w —OC(O)N(R Z4 )(R 3b ), —(CR 2g R 2h ) w —SR 1b , —(CR 2g R 2h ) w —S(O) 2 R 2b , —(CR 2g R 2h ) w S(O) 2 N(R Z4 )(R 3b ), —(CR 2g R 2h ) w —C(O)R 1b , —(CR 2g R 2b ) w —C(O)OR 1b , —(CR 2g R 2b ) w —C(O)N(R Z4 )(R 3b ), —(CR 2g R 2h ) w —N(R Z4 )(R 3b ), —(CR 2g R 2h ) w —N(R Z4 )C(O)R 1b , —(CR 2g R 2h ) w —N(R Z4 )C(O)O(R 1b ), —(CR 2g R 2h ) w —N(R Z4 )C(O)N(R Z4 )(R 3b ), —(CR 2g R 2h ) w —CN, and haloalkyl;

m, q, t, u, v, and w, at each occurrence, are each independently 1, 2, 3, 4, or 5;

n and p, at each occurrence, are each independently 2, 3, 4, or 5;

R 1b and R 3b , at each occurrence, is independently hydrogen, alkyl, or haloalkyl;

R 2b , at each occurrence, is independently alkyl or haloalkyl;

R a , R c , R d , R e , R f , R 1g , R 1h , R 2g , R 2h , R k , and R x , at each occurrence are each independently, hydrogen, halogen, alkyl, or haloalkyl;

each occurrence of R b is independently hydrogen, halogen, alkyl, haloalkyl, or OH; and

R Z3 and R Z4 , at each occurrence, are each independently hydrogen, alkyl, or haloalkyl;

with the proviso that the compound is not selected from the group consisting of

4-methyl-N-[(3Z)-1-phenyl-1,4,5,6-tetrahydro-3H-cyclopenta[c]isothiazol-3-ylidene]benzenesulfonamide;

N-[(3Z)-1-cyclohexyl-4,5,6,7-tetrahydro-2,1-benzisothiazol-3(1H)-ylidene]-4-methylbenzenesulfonamide; and

4-methyl-N-[(3Z)-1-phenyl-4,5,6,7-tetrahydro-2,1-benzisothiazol-3(1H)-ylidene]benzenesulfonamide.

2. The compound according to claim 1 or a pharmaceutically acceptable salt thereof, wherein R 1 is G 1 .

3. The compound according to claim 1 or a pharmaceutically acceptable salt thereof wherein R 2 is alkyl, alkynyl, alkenyl, G 1 , —C(R Zb )═NO(R Z1 ), —O(R Za ), —N(R Z1 )(R Z2b ), —(CR a R b ) m —N 3 , —(CR a R b ) m —CN, haloalkyl, —(CR a R b ) m —O(R Za ), —(CR a R b ) m —C(O)O(R Zb ), —(CR a R b ) m —C(O)(R Zb ), —(CR a R b ) m —C(R Zb )═NO(R Z1 ), —(CR a R b ) m —N(R Z1 )(R Z2b ), or —(CR a R e ) m -G 1 .

4. The compound according to claim 1 or a pharmaceutically acceptable salt thereof wherein R 3 is hydrogen or C 1-6 alkyl, and R 4 is alkyl, haloalkyl, or G 2 .

5. The compound according to claim 1 or a pharmaceutically acceptable salt thereof wherein

R 3 is hydrogen, C 1-6 alkyl, haloalkyl, or cycloalkyl;

R 2 is alkyl, alkenyl, alkynyl, G 1 , —C(R Zb )═NO(R Z1 ), —O(R Za ), —N(R Z1 )(R Z2b ), —(CR a R b ) m —N 3 , —(CR a R b ) m —CN, haloalkyl, —(CR a R b ) m —O(R Za ), —(CR a R b ) m —C(O)O(R Zb ), —(CR a R b ) m —C(O)(R Zb ), —(CR a R b ) m —C(R Zb )═NO(R Z1 ), —(CR a R b ) m —N(R Z1 )(R Z2b ), or —(CR a R e ) m -G 1 ;

R 1 is G 1 ; and

R 4 is alkyl, haloalkyl, or G 2 .

6. The compound according to claim 5 or a pharmaceutically acceptable salt thereof wherein R 1 is optionally substituted phenyl or optionally substituted naphthyl.

7. The compound according to claim 5 or a pharmaceutically acceptable salt thereof wherein R 1 is optionally substituted cycloalkyl.

8. The compound according to claim 6 or a pharmaceutically acceptable salt thereof wherein

R 3 is hydrogen or C 1-6 alkyl;

R 2 is alkyl, alkenyl, alkynyl, —(CR a R b ) m —CN, haloalkyl, —(CR a R b ) m —O(R Za ) or —(CR a R e ) m -G 1 ; and

R 4 is C 1-6 alkyl, haloalkyl, or C 3-6 cycloalkyl.

9. The compound according to claim 7 or a pharmaceutically acceptable salt thereof wherein

R 3 is hydrogen or C 1-6 alkyl;

R 2 is alkyl, alkenyl, alkynyl, —(CR a R b ) m —CN, haloalkyl, —(CR a R b ) m —O(R Za ) or —(CR a R e ) m -G 1 ; and

R 4 is C 1-6 alkyl, haloalkyl, or C 3-6 cycloalkyl.

10. The compound according to claim 8 or a pharmaceutically acceptable salt thereof wherein L is C═O.

11. The compound according to claim 9 or a pharmaceutically acceptable salt thereof wherein L is C═O.

12. The compound according to claim 8 or a pharmaceutically acceptable salt thereof wherein L is C═NCN.

13. The compound according to claim 9 or a pharmaceutically acceptable salt thereof wherein L is C═NCN.

14. The compound according to claim 1 or a pharmaceutically acceptable salt thereof wherein R 2 and R 3 , together with the atoms to which they are attached, form a five-, six-, or seven-membered monocyclic ring containing zero or one additional double bond, zero or one heteroatom selected from O, S, N, and N(H), each said ring is independently unsubstituted or substituted with 1, 2, 3, 4, or 5 substituents (R 21 ) selected from the group consisting of oxo, alkyl, alkenyl, alkynyl, halogen, —CN, —O(R 1a ), —C(O)OH, —C(O)O(alkyl), —C(O)(R 1a ), —N(R Z3 )(R 3a ), —N(R 3a )C(O)R 1a , —N(R 3a )C(O)O(R 1a ), —N(R 3a )C(O)N(R Z3 )(R 3a ), —N(R 3a )S(O) 2 (R 2a ), —N(R 3a )S(O) 2 N(R Z3 )(R 3a ), —SO 2 (R 2a ), —C(O) N(R Z3 )(R 3a ), —S(O) 2 N(R Z3 )(R 3a ), —(CR 1g R 1h ) u -G 2 , —(CR 1g R 1h ) u —CN, —(CR 1g R 1h ) u —O(R 1a ) and haloalkyl, two adjacent or non-adjacent atoms of each of said rings are optionally linked by an alkylene bridge of one, two, three, or four carbon atoms; and two substituents (R 21 ) on the same carbon atom, together with said carbon atom, optionally form a 3-6 membered monocyclic ring containing 0, 1, or 2 heteroatoms selected from O, S, and N(H).

15. The compound according to claim 14 or a pharmaceutically acceptable salt thereof wherein R 1 is G 1 , and R 4 is alkyl, haloalkyl, or G 2 .

16. The compound according to claim 14 or a pharmaceutically acceptable salt thereof wherein

R 1 is optionally substituted phenyl or optionally substituted naphthyl; and

R 4 is C 1-6 alkyl, haloalkyl, or C 3-6 cycloalkyl.

17. The compound according to claim 14 or a pharmaceutically acceptable salt thereof wherein R 1 is optionally substituted cycloalkyl, and R 4 is C 1-6 alkyl, haloalkyl, or C 3-6 cycloalkyl.

18. The compound according to claim 14 or a pharmaceutically acceptable salt thereof wherein L is C(O), R 1 is G 1 , and R 4 is alkyl, haloalkyl, or G 2 .

19. The compound according to claim 14 or a pharmaceutically acceptable salt thereof wherein L is C(O), R 1 is optionally substituted phenyl or optionally substituted naphthyl, and R 4 is alkyl, haloalkyl, or G 2 .

20. The compound according to claim 14 or a pharmaceutically acceptable salt thereof wherein L is C(O), R 1 is optionally substituted cycloalkyl, and R 4 is alkyl, haloalkyl, or G 2 .

21. The compound according to claim 14 of formula (II)

or a pharmaceutically acceptable salt thereof wherein

L is C═O, C═S, S(O) 2 , or C═NCN;

G 3 is CH 2 or N(H);

R 21 is oxo, alkyl, alkenyl, alkynyl, halogen, —CN, —O(R 1a ), —C(O)OH, —C(O)O(alkyl), —C(O)(R 1a ), —N(R Z3 )(R 3a ), —N(R 3a )C(O)R 1a , —N(R 3a )C(O)O(R 1a ), N(R 3a )C(O)N(R Z3 )(R 3a ), —N(R 3a )S(O) 2 (R 2a ), —N(R 3a )S(O) 2 N(R Z3 )(R 3a ), —SO 2 (R 2a ), —C(O)N(R Z3 )(R 3a ), —S(O) 2 N(R Z3 )(R 3a ), —(CR 1g R 1h ) u -G 2 , —(CR 1g R 1h ) u —CN, —(CR 1g R 1h ) u —O(R 1a ), and haloalkyl; and two substituents (R 21 ) on the same carbon atom, together with said carbon atom, optionally form a 3-6 membered monocyclic ring containing 0, 1, or 2 heteroatoms selected from O, S, and N(H);

r is 0, 1, 2, 3, 4, or 5;

R 1 is G 1 ; and

R 4 is alkyl, haloalkyl, or G 2 .

22. A compound of Formula (I) according to claim 1 , selected from the group consisting of:

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-4-butyl-2-(1,1-dimethylpropyl)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-4-butyl-2-cyclobutylisothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-4-butyl-2,3-dimethylisothiazol-5(2H)-ylidene]hexahydro-2,5-methanopentalene-3a(1H)-carboxamide;

N-[(5Z)-4-butyl-2-(1-methylcyclobutyl)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-4-allyl-2-tert-butylisothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-[(3-methyl-4,5-dihydroisoxazol-5-yl)methyl]isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(cyclopropylmethyl)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(3Z)-1-tert-butyl-5-propyl-4,5,6,7-tetrahydro-2,1-benzisothiazol-3(1H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(3Z)-1-tert-butyl-1,4,6,7-tetrahydro-3H-spiro[2,1-benzisothiazole-5,2′-[1,3]dioxolan]-3-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(2-hydroxyethyl)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(2-methoxyethyl)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(2-morpholin-4-ylethyl)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-[2-(5,5-dimethyl-1,3-dioxan-2-yl)ethyl]isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-4-(2-azidoethyl)-2-tert-butylisothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-[(3E)-3-(methoxyimino)propyl]isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-4-(2-aminoethyl)-2-tert-butyl-isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-[2-(dimethylamino)ethyl]isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-methylisothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(3-hydroxybutyl)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(2-cyanoethyl)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(2,3-dihydroxypropyl)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-[(E)-(methoxyimino)methyl]isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(1,3-dioxolan-2-ylmethyl)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(1-hydroxy-2-methylpropyl)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(cyanomethyl)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-4-[(1Z)-butyl-enyl]-2-tert-butylisothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-5-cyano-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(2-ethylcyclopropyl)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(hydroxymethyl)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(methoxymethyl)isothiazol-5-(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(ethoxymethyl)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(3-cyanopropyl)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-[hydroxy(phenyl)methyl]isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-4-(azidomethyl)-2-tert-butylisothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(2-cyclobutyl-1-hydroxyethyl)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-[cyclobutyl(hydroxy)methyl]isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-4-benzyl-2-tert-butylisothiazol-5-(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(2-cyclobutylethyl)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-isobutylisothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(cyclobutylmethyl)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-tetrahydro-2H-pyran-4-ylisothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-[hydroxy(1,3-thiazol-2-yl)methyl]isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-2,5-dimethoxybenzamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-5-fluoro-2-methoxybenzamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-2-methoxy-5-methylbenzamide;

N-[(5Z)-2-tert-butyl-4-[hydroxy(thien-2-yl)methyl]isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

methyl 4-{(5Z)-2-tert-butyl-5-[(5-chloro-2-methoxybenzoyl)imino]-2,5-dihydroisothiazol-4-yl}butanoate;

methyl 4-{(5Z)-2-tert-butyl-5-[(5-cyano-2-methoxybenzoyl)imino]-2,5-dihydroisothiazol-4-yl}butanoate;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-5-chloro-2-fluorobenzamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-5-chloro-2-(2,2,2-trifluoroethoxy)benzamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-2-methoxy-5-(methylsulfonyl)benzamide;

N-[(5Z)-2-tert-butyl-4-[hydroxy(1,3-thiazol-4-yl)methyl]isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(2-furylmethyl)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(2-furylmethyl)isothiazol-5(2H)-ylidene]-5-cyano-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(1,3-thiazol-4-ylmethyl)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(thien-2-ylmethyl)isothiazol-5(2H)-ylidene]-5-cyano-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(thien-2-yl-methyl)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

5-amino-N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-2-methoxybenzamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-5-formyl-2-methoxybenzamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-2-methoxy-5-[(E)-(methoxyimino)methyl]benzamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-5-(formylamino)-2-methoxybenzamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-5-[(E)-(hydroxyimino)methyl]-2-methoxybenzamide;

3-({[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]amino}carbonyl)-4-methoxybenzoic acid;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-5-iodo-2-methoxybenzamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-5-ethynyl-2-methoxybenzamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-2-methoxy-5-(trifluoromethoxy)benzamide;

5-acetyl-N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-2-methoxybenzamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-5-(difluoromethyl)-2-methoxybenzamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-5-(fluoromethyl)-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(tetrahydrofuran-2-ylmethyl)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-5-[(1Z)-N-hydroxyethanimidoyl]-2-methoxybenzamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-5-(1,1-difluoroethyl)-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(2-furylmethyl)isothiazol-5(2H)-ylidene]-2-fluoro-3-(trifluoromethyl)benzamide;

N-[(5Z)-2-tert-butyl-4-(2-furylmethyl)isothiazol-5(2H)-ylidene]-2-methoxy-5-(trifluoromethyl)benzamide;

N-[(5Z)-2-tert-butyl-4-(isopropoxymethyl)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-2-fluoro-3-(trifluoromethyl)benzamide;

methyl 3-({[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]amino}carbonyl)-4-methoxybenzoate;

N-[(5Z)-2-tert-butyl-4-(4-oxopentyl)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(4-oxopentyl)isothiazol-5(2H)-ylidene]-2-methoxy-5-(trifluoromethyl)benzamide;

N-[(5Z)-2-tert-butyl-4-(4-oxopentyl)isothiazol-5(2H)-ylidene]-2-fluoro-3-(trifluoromethyl)benzamide;

N 3 -[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-4-methoxyisophthalamide;

N-[(5Z)-2-tert-butyl-4-(4-hydroxy-4-methylpentyl)isothiazol-5(2H)-ylidene]-2-fluoro-3-(trifluoromethyl)benzamide;

N-[(5Z)-2-tert-butyl-4-(4-hydroxy-4-methylpentyl)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(4-hydroxy-4-methylpentyl)isothiazol-5(2H)-ylidene]-2-methoxy-5-(trifluoromethyl)benzamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-5-isopropyl-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(4-fluoro-4-methylpentyl)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(3-oxobutyl)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-[(2,2,2-trifluoroethoxy)methyl]isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(4,4-difluoropentyl)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(3-fluoro-3-methylbutyl)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(4-fluoro-4-methylpentyl)isothiazol-5(2H)-ylidene]-2-methoxy-5-(trifluoromethyl)benzamide;

N-[(5Z)-2-tert-butyl-4-{[(2R)-tetrahydrofuran-2-ylmethoxy]methyl}isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-[(2-fluoroethoxy)methyl]isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-[(2,2-difluoroethoxy)methyl]isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

methyl 3-({[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]amino}carbonyl)-2,2,3-trimethylcyclopentanecarboxylate;

methyl 3-({[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]amino}carbonyl)-1,2,2-trimethylcyclopentanecarboxylate;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-1-phenylcyclohexanecarboxamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-1-(2-chloro-4-fluorophenyl)cyclohexanecarboxamide;

3-({[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]amino}carbonyl)-2,2,3-trimethylcyclopentanecarboxylic acid;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-3-oxocyclopentanecarboxamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-1-phenylcyclopentanecarboxamide;

N 1 -[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-N 3 ,N 3 , 1,2,2-pentamethylcyclopentane-1,3-dicarboxamide;

N 1 -[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-N 3 ,1,2,2-tetramethylcyclopentane-1,3-dicarboxamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-3-[(3,3-difluoroazetidin-1-yl)carbonyl]-1,2,2-trimethylcyclopentanecarboxamide;

(1S,4R)-N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-4,7,7-trimethyl-3-oxo-2-oxabicyclo [2.2.1]heptane-1-carboxamide;

(1R,4S)-N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-4,7,7-trimethyl-3-oxo-2-oxabicyclo [2.2.1]heptane-1-carboxamide;

ethyl 3-([(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]amino}carbonyl)pyrrolidine-1-carboxylate;

3-([(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]amino}carbonyl)-1,2,2-trimethylcyclopentanecarboxylic acid;

tert-butyl 3-({[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]amino}carbonyl)pyrrolidine-1-carboxylate;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-1-(3-cyanopyridin-2-yl)pyrrolidine-3-carboxamide;

methyl 4-({[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]amino}carbonyl)bicyclo [2.2.2]octane-1-carboxylate;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-5-oxo-1-phenylpyrrolidine-3-carboxamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-5-chloro-N′-cyano-2-methoxybenzenecarboximidamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzenecarbothioamide;

N-[(3Z)-1-tert-butyl-5-(trifluoromethyl)-4,5,6,7-tetrahydro-2,1-benzisothiazol-3(1H)-ylidene]-5-chloro-2-methoxybenzamide;

tert-butyl (3Z)-1-tert-butyl-3-[(5-chloro-2-methoxybenzoyl)imino]-1,4,6,7-tetrahydroisothiazolo[4,3-c]pyridine-5(3H)-carboxylate;

N-[(3Z)-1-tert-butyl-4,5,6,7-tetrahydroisothiazolo[4,3-c]pyridin-3(1H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzenesulfonamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]naphthalene-1-sulfonamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-5-(dimethylamino)naphthalene-1-sulfonamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]cyclohexanesulfonamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]benzenesulfonamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]quinoline-8-sulfonamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-2,2,3,3-tetramethylcyclopropanecarboxamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-2,3-dichlorobenzene sulfonamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]adamantane-1-carboxamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-N′-cyano-2-methoxy-5-(trifluoromethyl)benzenecarboximidamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-2,2-dimethyl-4-oxo-3,4-dihydro-2H-pyran-6-carboxamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-N′-cyano-2-ethoxy-5-(trifluoromethyl)benzenecarboximidamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-2-methoxy-5-(trifluoromethyl)benzamide;

N-[(5Z)-2-tert-butyl-4-(3-cyanopropyl)isothiazol-5(2H)-ylidene]-5-chloro-N′-cyano-2-methoxybenzenecarboximidamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-5-cyano-2-hydroxybenzamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-5-cyano-2-(2,2,2-trifluoroethoxy)benzamide;

N-[(5Z)-2-tert-butyl-4-(3-cyanopropyl)isothiazol-5(2H)-ylidene]-5-cyano-2-(2,2,2-trifluoroethoxy)benzamide;

N-[(5Z)-2-tert-butyl-4-(3-cyanopropyl)isothiazol-5(2H)-ylidene]-5-cyano-2-hydroxybenzamide;

N-[(5Z)-2-tert-butyl-4-(3-cyanopropyl)isothiazol-5(2H)-ylidene]-5-chloro-2-(2,2,2-trifluoroethoxy)benzamide;

N-[(5Z)-2-tert-butyl-4-(3-cyanopropyl)isothiazol-5(2H)-ylidene]-2-methoxy-5-(trifluoromethyl)benzamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-5-chloro-2-hydroxybenzamide;

N-[(5Z)-2-tert-butyl-4-(cyclopentylmethyl)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(3-cyano-3-methylbutyl)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(4-cyanobutyl)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-5-chloro-2-(2-fluoroethoxy)benzamide;

2-(2-amino-2-oxoethoxy)-N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-5-chlorobenzamide;

2-(2-amino-2-oxoethoxy)-N-[(5Z)-2-tert-butyl-4-(3-cyanopropyl)isothiazol-5(2H)-ylidene]-5-chlorobenzamide;

N-[(5Z)-2-tert-butyl-4-(4,4,4-trifluorobutyl)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-isobutylisothiazol-5(2H)-ylidene]-2-methoxy-5-(trifluoromethyl)benzamide;

N-[(5Z)-2-tert-butyl-4-isobutylisothiazol-5(2H)-ylidene]-5-chloro-2-(2-fluoroethoxy)benzamide;

N-[(5Z)-2-tert-butyl-4-isobutylisothiazol-5(2H)-ylidene]-5-cyano-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-isobutylisothiazol-5(2H)-ylidene]-2-ethoxy-5-(trifluoromethyl)benzamide;

N-[(5Z)-2-tert-butyl-4-pentylisothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(4-fluorobutyl)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(4-fluorobutyl)isothiazol-5(2H)-ylidene]-2-methoxy-5-(trifluoromethyl)benzamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-5-chloro-2-[2-(dimethylamino)-2-oxoethoxy]benzamide;

N-[(5Z)-4-butyl-2-(2,2,2-trifluoro-1,1-dimethylethyl)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-4-butyl-2-(2-fluoro-1,1-dimethylethyl)isothiazol-5(2H)-ylidene]-2-methoxy-5-(trifluoromethyl)benzamide;

N-[(5Z)-4-butyl-2-tert-butylisothiazol-5(2H)-ylidene]-5-chloro-2-(cyanomethoxy)benzamide;

N-[(5Z)-4-butyl-2-(2-fluoro-1,1-dimethylethyl)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-4-(benzyloxy)-2-tert-butylisothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-hydroxyisothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(1-methylethoxy)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(1-methylpropoxy)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(4-fluorobutoxy)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-(cyanomethoxy)isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-{[(2S)-5-oxopyrrolidin-2-yl]methoxy}isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

N-[(5Z)-2-tert-butyl-4-{[(2R)-5-oxopyrrolidin-2-yl]methoxy}isothiazol-5(2H)-ylidene]-5-chloro-2-methoxybenzamide;

and

tert-butyl [(5Z)-2-tert-butyl-5-{[(5-chloro-2-methoxyphenyl)carbonyl]imino}-3-methyl-2,5-dihydroisothiazol-4-yl]carbamate;

or a pharmaceutically acceptable salt thereof.

23. A pharmaceutical composition comprising a therapeutically effective amount of a compound of Formula (I) according to claim 1 or a pharmaceutically acceptable salt thereof, in combination with a pharmaceutically acceptable carrier.

24. A method for treating neuropathic pain, nociceptive pain, and inflammatory pain in a mammal in need of such treatment comprising administering to the mammal a therapeutically effective amount of a compound of Formula (I) according to claim 1 , or a pharmaceutically acceptable salt thereof.