Fused tri and tetra-cyclic pyrazole kinase inhibitors

1. A compound of formula (I)

or a pharmaceutically acceptable salt, ester, amide, or prodrug thereof, wherein

R 1 and R 2 are independently selected from the group consisting of hydrogen, alkenyl, alkenyloxy, alkoxy, alkoxyalkoxy, alkoxyalkoxyalkynyl, alkoxyalkyl, alkoxycarbonyl, alkoxycarbonylalkyl, alkoxysulfonyl, alkyl, alkylcarbonyl, alkylcarbonyloxy, alkylsulfinyl, alkylsulfonyl, alkylthio, alkylthioalkyl, alkynyl, carboxy, carboxyalkyl, cyano, cycloalkenylalkoxy, cycloalkylalkoxy, cycloalkylalkyl, cycloalkylcarbonyl, cycloalkyloxy, formyl, haloalkoxy, haloalkoxyalkynyl, haloalkyl, halogen, heteroarylalkoxy, heteroarylalkoxyalkoxy, heteroarylalkyl, heteroarylalkynyl, heteroaryloxyalkyl, hydroxy, hydroxyalkoxy, hydroxyalkyl, hydroxyalkynyl, hydroxysulfonyl, hydroxysulfonylalkyl, mercapto, mercaptoalkyl, nitro, —NR A R B , (NR A R B )alkoxy, (NR A R B )alkyl, (NR A R B )alkynyl, (NR A R B )carbonyl, (NR A R B )carbonylalkoxy, (NR A R B )carbonylalkyl, and (NR G R H )alkoxy; or

R 1 and R 2 together with the carbon atoms to which they are attached form a 5, 6, 7, or 8-membered nonaromatic ring wherein the ring contains 0, 1, or 2 heteroatoms selected from the group consisting of O, N(R C ), and N(R D ), wherein the nonaromatic ring is substituted with 0, 1, or 2 substituents selected from the group consisting of alkyl and hydroxy;

R 3 is selected from the group consisting of hydrogen, alkenyl, alkenyloxy, alkoxy, alkoxyalkyl, alkoxycarbonyl, alkoxycarbonylalkyl, alkyl, alkylcarbonyl, alkylthio, alkylthioalkyl, alkynyl, carboxy, carboxyalkyl, cyano, formyl, haloalkoxy, haloalkyl, halogen, hydroxy, hydroxyalkyl, mercapto, nitro, —NR E R F , (NR E R F )alkoxy (NR E R F )alkyl, (NR E R F )carbonyl, and (NR E R F )carbonylalkyl;

R 4 is selected from the group consisting of hydrogen, alkoxycarbonyl, alkylcarbonylalkoxy, aryl, arylalkoxy, arylalkyl, aryloxy, carboxy, cyano, halogen, heteroaryl, heteroarylalkoxy, heteroarylalkyl, heteroaryloxy, hydroxy, —NR E R F , and (NR E R F )carbonyl;

R 5 is selected from the group consisting of hydrogen, alkoxycarbonyl, carboxy, or halogen, heteroaryl, hydroxy, nitro, —NR E R F , and (NR E R F )carbonyl;

provided that when R 5 is hydrogen, R 4 is other than hydrogen; or

R 4 and R 5 , together with the atoms to which they are attached, form a phenyl ring optionally substituted with 1, 2, 3, or 4 substituents independently selected from the group consisting of alkenyl, alkoxy, alkoxyalkyl, alkoxycarbonyl, alkoxycarbonylalkyl, alkoxysulfonyl, alkyl, alkylcarbonyl, alkylcarbonyloxy, alkylsulfmyl, alkylsulfonyl, alkylthio, alkylthioalkyl, alkynyl, carboxy, carboxyalkyl, cyano, formyl, haloalkoxy, haloalkyl, halogen, hydroxy, hydroxyalkyl, mercapto, nitro, —NR G R H , (NR G R H )alkoxy, (NR G R H )alkyl, (NR G R H )carbonyl, and (NR G R H )sulfonyl; or

R 4 and R 5 , together with the atoms to which they are attached, form a heterocycle optionally substituted with 1, 2, or 3 substituents independently selected from the group consisting of alkenyl, alkoxy, alkoxyalkyl, alkoxycarbonyl, alkyl, alkylcarbonyl, alkylcarbonyloxy, alkylthio, alkynyl, carboxy, cyano, formyl, haloalkoxy, haloalkyl, halogen, hydroxy, hydroxyalkyl, mercapto, nitro, oxo, —NR G R H , (NR G R H )alkoxy, (NR G R H )alkyl, and (NR G R H )carbonyl;

R 6 is selected from the group consisting of hydrogen, lower alkoxy, lower alkyl, halogen, hydroxy, and —NR E R F ;

R A and R B are independently selected from the group consisting of hydrogen, alkenyl, alkoxyalkyl, alkoxyalkylcarbonyl, alkoxycarbonyl, alkoxycarbonylalkyl, alkoxycarbonylalkylcarbonyl, alkoxysulfonyl, alkoxysulfonylalkyl, alkoxysulfonylalkylcarbonyl, alkyl, alkylcarbonyl, alkynyl, aryl, carboxyalkyl, carboxyalkylcarbonyl, cycloalkyl, cycloalkylalkyl, cycloalkylalkylcarbonyl, cycloalkylcarbonyl, cycloalkylcarbonylalkyl, cycloalkylcarbonylalkylcarbonyl, heteroaryl, heteroarylalkyl, hydroxyalkyl, hydroxyalkylcarbonyl, hydroxysulfonyl, hydroxysulfonylalkyl, hydroxysulfonylalkylcarbonyl, (NR E R F )alkyl, (NR E R F )alkylcarbonyl, (NR E R F )carbonyl, (NR E R F )carbonylalkyl, (NR E R F )carbonylalkylcarbonyl, (NR E R F )sulfonyl, (NR E R F )sulfonylalkyl, and (NR E R F )sulfonylalkylcarbonyl;

R C and R D are independently selected from the group consisting of hydrogen, alkoxycarbonyl, alkyl, and alkylcarbonyl;

R E and R F are independently selected from the group consisting of hydrogen, alkyl, alkylcarbonyl, cycloalkyl, heteroarylalkyl, and hydroxyalkyl;

X 1 and X 3 , are CH;

X 4 is N;

X 2 is CH(R 7 );

X 5 is C; and

R 7 is selected from the group consisting of hydrogen, alkoxy, alkyl, hydroxy, lower alkoxy, lower alkyl, and hydroxyalkyl.

2. The compound according to claim 1 selected from the group consisting of

3-(6-cyanopyridin-3-yl)-N-(pyridin-2-ylmethyl)-1,4-dihydroindeno[1,2-c]pyrazole-6-carboxamide;

5-(6-{[(pyridin-2-ylmethyl)amino]methyl}-1,4-dihydroindeno[1,2-c]pyrazol-3-yl)pyridine-2-carbonitrile;

5-(6-{[(trans-4-hydroxycyclohexyl)amino]methyl}-1,4-dihydroindeno[1,2-c]pyrazol-3-yl)pyridine-2-carbonitrile;

3-(6-cyanopyridin-3-yl)-N-(trans-4-hydroxycyclohexyl)-1,4-dihydroindeno[1,2-c]pyrazole-6-carboxamide;

3-(6-cyanopyridin-3-yl)-N-{[6-(trifluoromethyl)pyridin-3-yl]methyl}-1,4-dihydroindeno[1,2-c]pyrazole-6-carboxamide;

5-[6-(hydroxymethyl)-1,4-dihydroindeno[1,2-c]pyrazol-3-yl]pyridine-2-carbonitrile;

5-{6-[(pyridin-3-yloxy)methyl]-1,4-dihydroindeno[1,2-c]pyrazol-3-yl}pyridine-2-carbonitrile;

5-{6-[(pyridin-4-yloxy)methyl]-1,4-dihydroindeno[1,2-c]pyrazol-3-yl}pyridine-2-carbonitrile;

5-[7-methoxy-6-(pyridin-2-ylmethoxy)-1,4-dihydroindeno[1,2-c]pyrazol-3-yl]pyridine-2-carbonitrile;

5-{7-[(6-chloropyridin-3-yl)methoxy]-6-methoxy-1,4-dihydroindeno[1,2-c]pyrazol-3-yl}pyridine-2-carbonitrile;

5-[6-methoxy-7-(pyridin-2-ylmethoxy)-1,4-dihydroindeno[1,2-c]pyrazol-3-yl]pyridine-2-carbonitrile;

5-[6-methoxy-7-(pyridin-3-ylmethoxy)-1,4-dihydroindeno[1,2-c]pyrazol-3-yl]pyridine-2-carbonitrile;

5-{6-methoxy-7-[2-(4-methyl-1,3-thiazol-5-yl)ethoxy]-1,4-dihydroindeno[1,2-c]pyrazol-3-yl}pyridine-2-carbonitrile;

5-[7-(2-hydroxyethoxy)-6-methoxy-1,4-dihydroindeno[1,2-c]pyrazol-3-yl]pyridine-2-carbonitrile;

5-{7-[(6-bromopyridin-2-yl)methoxy]-6-methoxy-1,4-dihydroindeno[1,2-c]pyrazol-3-yl}pyridine-2-carbonitrile;

5-[7-methoxy-6-(pyridin-3-ylmethoxy)-1,4-dihydroindeno[1,2-c]pyrazol-3-yl]pyridine-2-carbonitrile;

5-{6-[3-(dimethylamino)propoxy]-7-methoxy-1,4-dihydroindeno[1,2-c]pyrazol-3-yl}pyridine-2-carbonitrile;

5-{7-methoxy-6-[2-(4-methyl-1,3-thiazol-5-yl)ethoxy]-1,4-dihydroindeno[1,2-c]pyrazol-3-yl}pyridine-2-carbonitrile;

5-[6-(2-hydroxyethoxy)-7-methoxy-1,4-dihydroindeno[1,2-c]pyrazol-3-yl]pyridine-2-carbonitrile;

5-{6-[(6-bromopyridin-2-yl)methoxy]-7-methoxy-1,4-dihydroindeno[1,2-c]pyrazol-3-yl}pyridine-2-carbonitrile;

5-{6-[(6-chloropyridin-3-yl)methoxy]-7-methoxy-1,4-dihydroindeno[1,2-c]pyrazol-3-yl}pyridine-2-carbonitrile;

5-{6-[2-(5-ethylpyridin-2-yl)ethoxy]-7-methoxy-1,4-dihydroindeno[1,2-c]pyrazol-3-yl}pyridine-2-carbonitrile;

3-(6-chloropyridin-3-yl)-6,7-dimethoxy-1,4-dihydroindeno[1,2-c]pyrazole;

4-[5-(6,7-dimethoxy-1,4-dihydroindeno[1,2-c]pyrazol-3-yl)pyridin-2-yl]phenol;

4-[5-(6,7-dimethoxy-1,4-dihydroindeno[1,2-c]pyrazol-3-yl)pyridin-2-yl]-2-methoxyphenol;

4-[5-(6,7-dimethoxy-1,4-dihydroindeno[1,2-c]pyrazol-3-yl)pyridin-2-yl]-2-fluorophenol;

5-(6,7-dimethoxy-1,4-dihydroindeno[1,2-c]pyrazol-3-yl)pyridine-2-carbonitrile;

2-[3-(6-chloropyridin-3-yl)-1,4-dihydroindeno[1,2-c]pyrazol-6-yl]propan-2-ol;

4-{5-[6-(1-hydroxy-1-methylethyl)-1,4-dihydroindeno[1,2-c]pyrazol-3-yl]pyridin-2-yl}phenol;

3-(5,6-dichloropyridin-3-yl)-6,7-dimethoxy-1,4-dihydroindeno[1,2-c]pyrazole;

2-[3-(6-fluoropyridin-3-yl)-1,4-dihydroindeno[1,2-c]pyrazol-6-yl]propan-2-ol;

3-(6-chloropyridin-3-yl)-7-ethyl-6-methoxy-1,4-dihydroindeno[1,2-c]pyrazole;

5-(7-ethyl-6-methoxy-1,4-dihydroindeno[1,2-c]pyrazol-3-yl)pyridine-2-carbonitrile;

5-{7-ethyl-6-[(4-hydroxycyclohexyl)oxy]-1,4-dihydroindeno[1,2-c]pyrazol-3-yl}pyridine-2-carbonitrile;

5-[7-ethyl-6-(pyridin-2-ylmethoxy)-1,4-dihydroindeno[1,2-c]pyrazol-3-yl]pyridine-2-carbonitrile;

5-(6,7-diethyl-1,4-dihydroindeno[1,2-c]pyrazol-3-yl)pyridine-2-carbonitrile;

3-(6-chloropyridin-3-yl)-6,7-bis(2-methoxyethoxy)-1,4-dihydroindeno[1,2-c]pyrazole;

5-[6,7-bis(2-methoxyethoxy)-1,4-dihydroindeno[1,2-c]pyrazol-3-yl]pyridine-2-carbonitrile;

5-(6,7-diisopropoxy-1,4-dihydroindeno[1,2-c]pyrazol-3-yl)pyridine-2-carbonitrile;

3-(6-chloropyridin-3-yl)-6,7-diisopropoxy-1,4-dihydroindeno[1,2-c]pyrazole;

4-[5-(6,7-diisopropoxy-1,4-dihydroindeno[1,2-c]pyrazol-3-yl)pyridin-2-yl]phenol;

4-[5-(6,7-diisopropoxy-1,4-dihydroindeno[1,2-c]pyrazol-3-yl)pyridin-2-yl]-2-methoxyphenol;

5-(6-isopropoxy-1,4-dihydroindeno[1,2-c]pyrazol-3-yl)pyridine-2-carbonitrile;

5-(6-isopropoxy-1,4-dihydroindeno[1,2-c]pyrazol-3-yl)pyridine-2-carbonitrile;

4-[5-(6-isopropoxy-1,4-dihydroindeno[1,2-c]pyrazol-3-yl)pyridin-2-yl]phenol;

4-[5-(6-isopropoxy-1,4-dihydroindeno[1,2-c]pyrazol-3-yl)pyridin-2-yl]-2-methoxyphenol;

5-(6,7-diethoxy-1,4-dihydroindeno[1,2-c]pyrazol-3-yl)pyridine-2-carbonitrile;

3-(6-chloropyridin-3-yl)-6,7-diethoxy-1,4-dihydroindeno[1,2-c]pyrazole;

4-[5-(6,7-diethoxy-1,4-dihydroindeno[1,2-c]pyrazol-3-yl)pyridin-2-yl]phenol;

4-[5-(6,7-diethoxy-1,4-dihydroindeno[1,2-c]pyrazol-3-yl)pyridin-2-yl]-2-methoxyphenol;

5-[6,7-bis(difluoromethoxy)-1,4-dihydroindeno[1,2-c]pyrazol-3-yl]pyridine-2-carbonitrile;

3-(6-chloropyridin-3-yl)-6,7-bis(difluoromethoxy)-1,4-dihydroindeno[1,2-c]pyrazole;

4-{5-[6,7-bis(difluoromethoxy)-1,4-dihydroindeno[1,2-c]pyrazol-3-yl]pyridin-2-yl}phenol;

5-[6-(1H-1,2,4-triazol-1-ylmethyl)-1,4-dihydroindeno[1,2-c]pyrazol-3-yl]pyridine-2-carbonitrile;

3-(6-chloropyridin-3-yl)-6-(1H-1,2,4-triazol-1-ylmethyl)-1,4-dihydroindeno[1,2-c]pyrazole;

4-{5-[6-(1H-1,2,4-triazol-1-ylmethyl)-1,4-dihydroindeno[1,2-c]pyrazol-3-yl]pyridin-2-yl}phenol;

4-{5-[6-(diethylamino)-1,4-dihydroindeno[1,2-c]pyrazol-3-yl]pyridin-2-yl}phenol;

3-(6-chloropyridin-3-yl)-N,N-diethyl-1,4-dihydroindeno[1,2-c]pyrazol-6-amine;

5-[6-(diethylamino)-1,4-dihydroindeno[1,2-c]pyrazol-3-yl]pyridine-2-carbonitrile;

4-{5-[6-(diethylamino)-1,4-dihydroindeno[1,2-c]pyrazol-3-yl]pyridin-2-yl}-2-methoxyphenol;

5-{6-[(3-methylcyclohexyl)oxy]-1,4-dihydroindeno[1,2-c]pyrazol-3-yl}pyridine-2-carbonitrile;

5-[6-(cyclohexylmethoxy)-1,4-dihydroindeno[1,2-c]pyrazol-3-yl]pyridine-2-carbonitrile;

5-[6-(pyridin-2-ylmethoxy)-1,4-dihydroindeno[1,2-c]pyrazol-3-yl]pyridine-2-carbonitrile;

5-[6-(2-pyridin-2-ylethoxy)-1,4-dihydroindeno[1,2-c]pyrazol-3-yl]pyridine-2-carbonitrile;

5-(6-{2-[4-(dimethylamino)phenyl]ethoxy}-1,4-dihydroindeno[1,2-c]pyrazol-3-yl)pyridine-2-carbonitrile;

5-{6-[(4-hydroxycyclohexyl)oxy]-1,4-dihydroindeno[1,2-c]pyrazol-3-yl}pyridine-2-carbonitrile;

5-{6-[2-(4-methyl-1,3-thiazol-5-yl)ethoxy]-1,4-dihydroindeno[1,2-c]pyrazol-3-yl}pyridine-2-carboxamide;

5-[6-(2-hydroxyethyl)-1,4-dihydroindeno[1,2-c]pyrazol-3-yl]pyridine-2-carbonitrile;

5-[6-(difluoromethoxy)-7-methoxy-1,4-dihydroindeno[1,2-c]pyrazol-3-yl]pyridine-2-carbonitrile;

3-(6-chloropyridin-3-yl)-6-(difluoromethoxy)-7-methoxy-1,4-dihydroindeno[1,2-c]pyrazole; and

4-{5-[6-(difluoromethoxy)-7-methoxy-1,4-dihydroindeno[1,2-c]pyrazol-3-yl]pyridin-2-yl}phenol.

3. A pharmaceutical composition comprising a compound of formula (I) or a therapeutically acceptable salt thereof in combination with a therapeutically acceptable carrier.

4. The compound according to claim 1 wherein

X 1 and X 3 are CH;

X 2 is CH(R 7 );

X 4 is N;

X 5 is C;

R 1 is selected from the group consisting of hydrogen, alkoxy, alkyl, hydroxyalkoxy, and hydroxyalkyl;

R 2 is selected from the group consisting of alkoxy, alkoxyalkoxyalkynyl, alkyl, haloalkoxyalkynyl, heteroarylalkoxy, heteroarylalkynyl, heteroaryloxyalkyl, heteroaryloxy, heterocyclealkoxy, heterocyclecarbonyl, heterocycleoxy, heterocycleoxyalkyl, hydroxyalkoxy, hydroxalkyl, hydroxyalkynyl, (NR A R B )alkynyl, and (NR A R B )carbonyl;

R 3 is selected from the group consisting of hydrogen, —NR E R F , and hydroxyalkyl;

R 4 is selected from the group consisting of cyano, halogen, and aryl wherein the aryl is phenyl optionally substituted with 1 or 2 substituents independently selected from alkoxy and hydroxy;

R 5 and R 6 are hydrogen;

R 7 is selected from the group consisting of hydrogen, lower alkoxy, lower alkyl, and hydroxy;

R E and R F are independently selected from the group consisting of hydrogen, alkyl, and alkylcarbonyl; and

R A and R B are as defined in formula (I).