Pyrrole substituted 2-indolinone protein kinase inhibitors

Abstract

The present invention relates to pyrrole substituted 2-indolinone compounds and their pharmaceutically acceptable salts which modulate the activity of protein kinases and therefore are expected to be useful in the prevention and treatment of protein kinase related cellular disorders such as cancer.

What is claimed:  
     
         1 . A compound of Formula (I):  
       
         
           
           
               
               
           
         
       
       wherein: 
 R 1  is selected from the group consisting of hydrogen, halo, alkyl, cyclkoalkyl, aryl, heteroaryl, heteroalicyclic, hydroxy, alkoxy, —(CO)R 15 , —NR 13 R 14 , —(CH 2 ) r R 16  and —C(O)NR 8 R 9 ;  
 R 2  is selected from the group consisting of hydrogen, halo, alkyl, trihalomethyl, hydroxy, alkoxy, cyano, —NR 13 R 14 , —NR 13 C(O)R 14 , —C(O)R 15 , aryl, heteroaryl, and —S(O) 2 NR 13 R 14 ;  
 R 3  is selected from the group consisting of hydrogen, halogen, alkyl, trihalomethyl, hydroxy, alkoxy, —(CO)R 15 , —NR 13 R 14 , aryl, heteroaryl, —NR 13 S(O) 2 NR 14,  —S(O) 2 NR 13 R 14 , —NR 13 C(O)R 14 , —NR 13 C(O)OR 14  and —SO 2 R 20  (wherein R 20  is alkyl, aryl, aralkyl, heteroaryl and heteroaralkyl);  
 R 4  is selected from the group consisting of hydrogen, halogen, alkyl, hydroxy, alkoxy and —NR 13 R 14 ;  
 R 5  is selected from the group consisting of hydrogen, alkyl and —C(O)R 10 ;  
 R 6  is selected from the group consisting of hydrogen, alkyl and —C(O)R 10 ;  
 R 7  is selected from the group consisting of hydrogen, alkyl, aryl, heteroaryl, —C(O)R 17  and —C(O)R 10 ; or  
 R 6  and R 7  may combine to form a group selected from the group consisting of —(CH 2 ) 4 —, —(CH 2 ) 5 — and —(CH 2 ) 6 —;  
 with the proviso that at least one of R 5 , R 6  or R 7  must be —C(O)R 1 ;  
 R 8  and R 9  are independently selected from the group consisting of hydrogen, alkyl and aryl;  
 R 10  is selected from the group consisting of hydroxy, alkoxy, aryloxy, —N(R 11 )(CH 2 ) n R 12 , and —NR 13 R 14 ;  
 R 11  is selected from the group consisting of hydrogen and alkyl;  
 R 12  is selected from the group consisting of —NR 13 R 14 , hydroxy, —C(O)R 15 , aryl, heteroaryl, —N + (O − )R 13 R 14 , —N(OH)R 13 , and —NHC(O)R a  (wherein R a  is unsubstituted alkyl, haloalkyl, or aralkyl);  
 R 13  and R 14  are independently selected from the group consisting of hydrogen, alkyl, lower alkyl substituted with hydroxyalkylamino, cyanoalkyl, cycloalkyl, aryl and heteroaryl; or  
 R 13  and R 14  may combine to form a heterocyclo group;  
 R 15  is selected from the group consisting of hydrogen, hydroxy, alkoxy and aryloxy;  
 R 16  is selected from the group consisting of hydroxy, —C(O)R 15 , —NR 13 R 14  and —C(O)NR 13 R 14 ;  
 R 17  is selected from the group consisting of alkyl, cycloalkyl, aryl and heteroaryl;  
 R 20  is alkyl, aryl, aralkyl or, heteroaryl; and  
 n and r are independently 1, 2, 3, or 4;  
 or a pharmaceutically acceptable salt thereof.  
 
     
     
         2 . The compound or salt of  claim 1  wherein: 
 R 1  is selected from the group consisting of hydrogen, halo, alkyl, cyclkoalkyl, aryl, heteroaryl, heteroalicyclic, hydroxy, alkoxy, —C(O)R 15 , —NR 13 R 14 , —(CH 2 ) r R 16  and —C(O)NR 8 R 9 ;  
 R 2  is selected from the group consisting of hydrogen, halo, alkyl, trihalomethyl, hydroxy, alkoxy, —NR 13 R 14 , —NR 13 C(O))R 14 , —C(O)R 15 , aryl, heteroaryl, and —S(O) 2 NR 13 R 14 ;  
 R 3  is selected from the group consisting of hydrogen, halogen, alkyl, trihalomethyl, hydroxy, alkoxy, —(CO)R 15 , —NR 13 R 14 , aryl, heteroaryl, —NR 13 S(O) 2 R 14,  —S(O) 2 NR 13 R 14 , —NR 13 C(O)R 14  and —NR 13 C(O)OR 14 ;  
 R 4  is selected from the group consisting of hydrogen, halogen, alkyl, hydroxy, alkoxy and —NR 13 R 14 ;  
 R 5  is selected from the group consisting of hydrogen, alkyl and C(O)R 10 ;  
 R 6  is selected from the group consisting of hydrogen, alkyl and —C(O)R 10 ;  
 R 7  is selected from the group consisting of hydrogen, alkyl, aryl, heteroaryl, —C(O)R 17  and —C(O)R 10 ;  
 R 6  and R 7  may combine to form a group selected from the group consisting of —(CH 2 ) 4 —, —(CH 2 ) 5 — and (CH 2 ) 6 —;  
 with the proviso that at least one of R 5 , R 6  or R 7  must be —C(O)R 10 ;  
 R 8  and R 9  are independently selected from the group consisting of hydrogen, alkyl and aryl;  
 R 10  is selected from the group consisting of hydroxy, alkoxy, aryloxy, —N(R 11 )(CH 2 ) n R 12  and —NR 13 R 14 ;  
 R 11  is selected from the group consisting of hydrogen and alkyl;  
 R 12  is selected from the group consisting of —NR 13 R 14 , hydroxy, —C(O)R 15 , aryl and heteroaryl;  
 R 13  and R 14  are independently selected from the group consisting of hydrogen, alkyl, cycloalkyl, aryl and heteroaryl;  
 R 13  and R 14  may combine to form a group selected from the group consisting of —(CH 2 ) 4 —, —(CH 2 ) 5 —, —(CH 2 ) 2 O(CH 2 ) 2 —, and —(CH 2 ) 2 N(CH 3 )(CH 2 ) 2 —;  
 R 15  is selected from the group consisting of hydrogen, hydroxy, alkoxy and aryloxy;  
 R 16  is selected from the group consisting of hydroxy, —C(O)R 15 , —NR 13 R 14  and —C(O)NR 13 R 14 ;  
 R 17  is selected from the group consisting of alkyl, cycloalkyl, aryl and heteroaryl; and;  
 n and r are independently 1, 2, 3, or 4;  
 or a pharmaceutically acceptable salt thereof.  
 
     
     
         3 . The compound or salt of  claim 1  wherein R 5  is —COR 10  wherein R 10  is —NR 11 (CH 2 ) n R 12  wherein: 
 R 11  is hydrogen or lower unsubstituted alkyl;  
 n is 2 or 3; and  
 R 12  is —NR 13 R 14  wherein R 13  and R 14  are independently unsubstituted lower alkyl.  
 
     
     
         4 . The compound or salt of  claim 1  wherein R 5  is —COR 10  wherein R 10  is —NR 11 (CH 2 ) n R 12  wherein: 
 R 11  is hydrogen or lower unsubstituted alkyl;  
 n is 2 or 3; and  
 R 12  is —NR 13 R 14  wherein R 13  and R 14  combine to form a group selected from —(CH 2 ) 4 —, —(CH 2 ) 5 —, —(CH 2 ) 2 —O—(CH 2 ) 2 — or —(CH 2 ) 2 N(CH 3 )(CH 2 ) 2 —.  
 
     
     
         5 . The compound of  claim 1  wherein R 5  is N-(2-dimethylaminoethyl)aminocarbonyl, N-(2-diethylaminoethyl)-N-methylaminocarbonyl, N-(3-dimethylaminopropyl)aminocarbonyl, N-(2-diethylaminoethyl)aminocarbonyl, N-(3-ethylaminopropyl)-aminocarbonyl, N-(2-ethylaminoethyl)aminocarbonyl, or N-(3-diethylaminopropyl)aminocarbonyl.  
     
     
         6 . The compound of  claim 1  wherein R 5  is N-(2-diethylaminoethyl)aminocarbonyl or N-(2-ethylaminoethyl)aminocarbonyl.  
     
     
         7 . The compound of  claim 1  wherein R 5  is 3-pyrrolidin-1-ylpropylaminocarbonyl, 3-morpholin-4-ylpropylaminocarbonyl, 2-pyrrolidin-1-ylethylaminocarbonyl, 2-morpholin-4-yl-ethylaminocarbonyl, 2-(4-methylpiperazin-1-yl)ethyl-aminocarbonyl, 2-(3,5-dimethylpiperazin-1-yl)ethyl-aminocarbonyl, 3-(4-methylpiperazin-1-yl)propylamino-carbonyl or 3-(3,5-dimethylpiperazin-1-yl)propylamino-carbonyl.  
     
     
         8 . The compound or salt of  claim 1  wherein R 6  is —COR 10  wherein R 10  is —NR 11 (CH 2 ) n R 12  wherein: 
 R 11  is hydrogen or lower unsubstituted alkyl;  
 n is 2 or 3; and  
 R 12  is —NR 13 R 14  wherein R 13  and R 14  are independently unsubstituted lower alkyl.  
 
     
     
         9 . The compound or salt of  claim 1  wherein R 6  is —COR 10  wherein R 10  is —NR 11 (CH 2 ) n R 12  wherein: 
 R 11  is hydrogen or lower unsubstituted alkyl;  
 n is 2 or 3; and  
 R 12  is —NR 13 R 14  wherein R 13  and R 14  combine to form a group selected from —(CH 2 ) 4 —, —(CH 2 ) 5 —, —(CH 2 ) 2 —O—(CH 2 ) 2 — or —(CH 2 ) 2 N(CH 3 )(CH 2 ) 2 —.  
 
     
     
         10 . The compound or salt of  claim 1  wherein R 6  is N-(2-dimethylamino-ethyl)aminocarbonyl, N-(2-diethylaminoethyl)-N-methylaminocarbonyl, N-(3-dimethylaminopropyl)-aminocarbonyl, N-(2-diethylaminoethyl)-aminocarbonyl, N-(2-ethylaminoethyl)-aminocarbonyl, N-(3-ethylaminopropyl)-aminocarbonyl, or N-(3-diethylaminopropyl)aminocarbohyl.  
     
     
         11 . The compound or salt of  claim 1  wherein R 6  is N-(2-diethylaminoethyl)aminocarbonyl or N-(2-ethylaminoethyl)aminocarbonyl.  
     
     
         12 . The compound or salt of  claim 1  wherein R 6  is 3-pyrrolidin-1-ylpropylaminocarbonyl, 3-morpholin-4-ylpropylamino-carbonyl, 2-pyrrolidin-1-ylethylaminocarbonyl, 2-morpholin-4-ylethylaminocarbonyl, 2-(4-methylpiperazin-1-yl)ethyl-aminocarbonyl, 2-(3,5-dimethylpiperazin-1-yl)ethyl-aminocarbonyl, 3-(4-methylpiperazin-1-yl)propylamino-carbonyl or 3-(3,5-dimethylpiperazin-1-yl)propylamino-carbonyl.  
     
     
         13 . The compound or salt of  claim 1  wherein R 5  is —COR 10  wherein R 10  is —NR 13 R 14  wherein R 13  is hydrogen and R 14  is lower alkyl substituted with hydroxy, aryl, heteroalicyclic, heteroaryl, or carboxy.  
     
     
         14 . The compound or salt of  claim 1  wherein R 5  is 3-triazin-1-ylpropylaminocarbonyl, 2-triazin-1-ylethylaminocarbonyl, 3-imidazol-1-ylpropylaminocarbony, pyridin-4-ylmethylaminocarbonyl, 2-pyridin-2-ylethylaminocarbonyl or 2-imidazol-1-yl ethylaminocarbonyl.  
     
     
         15 . The compound or salt of  claim 1  wherein R 6  is —COR 10  wherein R 10  is —NR 13 R 14  wherein R 13  is hydrogen and R 14  is lower alkyl substituted with hydroxy, aryl, heteroalicyclic, heteroaryl, or carboxy.  
     
     
         16 . The compound or salt of  claim 1  wherein R 6  is 2-triazin-1-ylpropylaminocarbonyl, 2-triazin-1-ylethylaminocarbonyl, 3-imidazol-1-ylpropylaminocarbony, pyridin-4-ylmethylaminocarbonyl, 2-pyridin-2-ylethylaminocarbonyl or 2-imidazol-1-yl ethylaminocarbonyl.  
     
     
         17 . The compound or salt of  claim 1  wherein R 5  is —COR 10  wherein R 10  is —NR 11 (CH 2 ) n R 12  wherein: 
 R 11  is hydrogen or lower unsubstituted alkyl;  
 n is 2 or 3; and  
 R 12  is —NR 13 R 14  wherein R 13  and R 14  together combine to form a heterocycle.  
 
     
     
         18 . The compound or salt of  claim 1  wherein R 5  is —COR 10  wherein R 10  is —NR 11 (CH 2 ) n R 12  wherein: 
 —R 11  is hydrogen or lower unsubstituted alkyl;  
 n is 2 or 3; and  
 R 12  is —NR 13 R 14  wherein R 13  and R 1 ” together combine to form a 5, 6 or 7 atom heterocycle containing a carbonyl group and one or two nitrogen atoms within the ring.  
 
     
     
         19 . The compound or salt of  claim 1  wherein R 5  is 2-(3-oxopiperazin-1-yl)ethylaminocarbonyl, 2-(imidazolidin-1-yl-2-one)ethylaminocarbonyl, 2-(tetrahydropyrimidin-1-yl-2-one)ethylaminocarbonyl, 2-(2-oxopyrrolidin-1-yl)-ethylaminocarbonyl, 3-(3-oxopiperazin-1-yl)propylaminocarbonyl, 3-(imidazolidin-1-yl-2-one)propylaminocarbonyl, 3-(tetrahydropyrimidin-1-yl-2-one)propylaminocarbonyl, or 3-(2-oxopyrrolidin-1-yl)propylaminocarbonyl.  
     
     
         20 . The compound or salt of  claim 1  wherein R 6  is —COR 10  wherein R 10  is —NR 11 (CH 2 ) n R 12  wherein: 
 R 11  is hydrogen or lower unsubstituted alkyl;  
 n is 2 or 3; and  
 R 12  is —NR 13 R 14  wherein R 13  and R 14  together combine to form a heterocycle.  
 
     
     
         21 . The compound or salt of  claim 1  wherein R 6  is —COR 10  wherein R 10  is —NR 11 (CH 2 ) n R 12  wherein: 
 R 11  is hydrogen or lower unsubstituted alkyl;  
 n is 2 or 3; and  
 R 12  is —NR 13 R 14  wherein R 13  and R 14  together combine to form a 5, 6 or 7 atom heterocycle containing a carbonyl group and one or two nitrogen atoms within the ring.  
 
     
     
         22 . The compound or salt of  claim 1  wherein R 6  is 2-(3-oxopiperazin-1-yl)ethylaminocarbonyl, 2-(imidazolidin-1-yl-2-one)ethylaminocarbonyl, 2-(tetrahydropyrimidin-1-yl-2-one)ethylaminocarbonyl, 2-(2-oxopyrrolidin-1-yl)ethylaminocarbonyl, 3-(3-oxopiperazin-1-yl)propylaminocarbonyl, 3-(imidazolidin-1-yl-2-one)propylaminocarbonyl, 3-(tetrahydropyrimidin-1-yl-2-one)propylaminocarbonyl, or 3-(2-oxopyrrolidin-1-yl)propylaminocarbonyl.  
     
     
         23 . The compound or salt of anyone of claims  3 - 7 ,  13 - 14  or  17 - 19  wherein: 
 R 6  is selected from the group consisting of hydrogen and lower unsubstituted alkyl; and  
 R 7  is selected from the group consisting of hydrogen, alkyl, aryl, heteroaryl, and —C(O)R 17  wherein R 17  is hydroxy, unsubstituted lower alkyl or aryl.  
 
     
     
         24 . The compound or salt of  claim 23  wherein: 
 R 6  is selected from the group consisting of hydrogen, and methyl; and  
 R 7  is selected from the group consisting of methyl, hydrogen and phenyl.  
 
     
     
         25 . The compound or salt of any of the claims  8 - 12 ,  15 ,  16 , or  20 - 22  wherein: 
 R 5  is selected from the group consisting of hydrogen and unsubstituted lower alkyl; and  
 R 7  is selected from the group consisting of hydrogen, alkyl, aryl, heteroaryl, and —C(O)R 17 , wherein R 17  is hydroxy, unsubstituted lower alkyl or aryl.  
 
     
     
         26 . The compound or salt of  claim 25  wherein: 
 R 6  is selected from the group consisting of hydrogen, or methyl; and  
 R 7  is selected from the group consisting of methyl, hydrogen or phenyl.  
 
     
     
         27 . The compound or salt of  claim 23  wherein: 
 R 1  is hydrogen, unsubstituted lower alkyl, —C(O)NR 8 R 9 , unsubstituted cycloalkyl or aryl;  
 R 2  is hydrogen, halo, lower alkoxy, cyano, aryl, or —S(O) 2 NR 13 R 14  wherein R 13  is hydrogen and R 14  is hydrogen, aryl or alkyl; R 3  is selected from the group consisting of hydrogen, lower alkoxy, —C(O)R 15 , —NR 13 C(O)R 14 , aryl optionally substituted with one or two substitutents selected from the group consisting of lower alkyl, halo, or lower alkoxy, and heteroaryl; and  
 R 4  is hydrogen.  
 
     
     
         28 . The compound or salt of  claim 23  wherein: 
 R 1  is hydrogen or phenyl;  
 R 2  is hydrogen, chloro, bromo, fluoro, methoxy, ethoxy, phenyl, cyano, dimethylaminosulfonyl, 3-chlorophenyl-aminosulfonyl, carboxy, methoxy, aminosulfonyl, methylaminosulfonyl, methylsulfonyl ethylsulfonyl, benzylsulfonyl, phenylaminosulfonyl, pyridin-3-yl-aminosulfonyl, dimethylaminosulfonyl, or isopropylamino-sulfonyl;  
 R 3  is hydrogen, methoxy, carboxy, phenyl; pyridin-3-yl, 3,4-dichlorophenyl, 2-methoxy-5-isopropylphenyl, 4-n-butylphenyl, or 3-isopropylphenyl; and  
 R 4  is hydrogen.  
 
     
     
         29 . The compound or salt of  claim 23  wherein: 
 R 1  is hydrogen;  
 R 2  is hydrogen, cyano, fluoro, chloro, or bromo;  
 R 3  is hydrogen; and  
 R 4  is hydrogen.  
 
     
     
         30 . The compound or salt of  claim 25  wherein: 
 R 1  is hydrogen, unsubstituted lower alkyl, —C(O)NR 8 R 9 , unsubstituted cycloalkyl or aryl;  
 R 2  is hydrogen, halo, lower alkoxy, cyano, aryl, —SO 2 R20, or —S(O) 2 NR 13 R 14  wherein R 13  is hydrogen and R 14  is hydrogen, aryl or alkyl;  
 R 3  is selected from the group consisting of hydrogen, lower alkoxy, —C(O)R 15 , —NR 13 C(O)R 14 , aryl and heteroaryl; and  
 R 4  is hydrogen.  
 
     
     
         31 . The compound or salt of  claim 25  wherein: 
 R 1  is hydrogen or phenyl;  
 R 2  is hydrogen, chloro, bromo, fluoro, methoxy, ethoxy, phenyl, dimethylaminosulfonyl, cyano, methylsulfonyl, ethylsulfonyl, benzylsulfonyl, 3-chlorophenyl-aminosulfonyl, carboxy, methoxy, aminosulfonyl, methylaminosulfonyl, phenylaminosulfonyl, pyridin-3-yl-aminosulfonyl, dimethylaminosulfonyl, or isopropylamino-sulfonyl;  
 R 3  is hydrogen, methoxy, carboxy, phenyl, pyridin-3-yl, 3,4-dichlorophenyl, 2-methoxy-5-isopropylphenyl, 4-n-butylphenyl, 3-isopropylphenyl; and  
 R 4  is hydrogen.  
 
     
     
         32 . The compound or salt of  claim 25  wherein: 
 R 1  is hydrogen;  
 R 2  is hydrogen, cyano, fluoro, chloro, or bromo;  
 R 3  is phenyl; and  
 R 4  is hydrogen.  
 
     
     
         33 . The compound or salt of  claim 1  wherein: 
 R 1  is hydrogen, unsubstituted lower alkyl, —C(O)NR 8 R 9 , unsubstituted cycloalkyl or aryl;  
 R 2  is hydrogen, halo, lower alkoxy, cyano, aryl or —S(O) 2 NR 13 R 14  wherein R 13  is hydrogen and R 14  is hydrogen, aryl or alkyl; R 3  is selected from the group consisting of hydrogen, lower alkoxy, —C(O)R 15 , —NR 13 C(O)R 14 , aryl, and heteroaryl; and  
 R 4  is hydrogen.  
 
     
     
         34 . The compound or salt of  claim 1  wherein: 
 R 1  is hydrogen, or methyl;  
 R 2  is hydrogen, cyano, chloro, fluoro, or bromo;  
 R 3  is selected from the group consisting of hydrogen or phenyl; and  
 R 4  is hydrogen.  
 
     
     
         35 . The compound or salt of  claim 33  or  34  wherein: 
 R 5  is —COR 10;    
 R 6  is selected from the group consisting of hydrogen and unsubstituted lower alkyl; and  
 R 7  is selected from the group consisting of hydrogen, alkyl, aryl, heteroaryl, and —C(O)R 17  wherein R 17  is hydroxy, unsubstituted lower alkyl or aryl.  
 
     
     
         36 . The compound or salt of  claim 33  or  34  wherein: 
 R 6  is —COR 10;    
 R 5  is selected from the group consisting of hydrogen and unsubstituted lower alkyl; and  
 R 7  is selected from the group consisting of hydrogen, alkyl, aryl, heteroaryl, and —C(O)R 17  wherein R 17  is hydroxy, unsubstituted lower alkyl or aryl.  
 
     
     
         37 . The compound or salt of  claim 1  wherein R 5  is —COR 10  wherein R 10  is —NR 13 R 14  wherein R 13  is hydrogen and R 14  is lower alkyl substituted with hydroxy, lower alkyl substituted with hydroxyalkylamino, carboxy, or —NR 18 R 19  wherein R 18  and R 19  are independently hydrogen or lower unsubstituted alkyl.  
     
     
         38 . The compound or salt of  claim 11  wherein R 5  is 2-[(diethylamino)-2-hydroxyethyl]aminocarbonyl, 2-(N-ethyl-N-2-hydroxyethylamino)ethylaminocarbonyl, carboxymethylamino-carbonyl, or 2-hydroxyethylaminocarbonyl.  
     
     
         39 . The compound or salt of  claim 1  wherein R 6  is —COR 10  wherein R 10  is —NR 13 R 14  wherein R 13  is hydrogen and R 14  is lower alkyl substituted with hydroxy, lower alkyl substituted with hydroxyalkylamino, carboxy, or —NR 18 R 19  wherein R 18  and R 19  are independently hydrogen or lower unsubstituted alkyl.  
     
     
         40 . The compound or salt of  claim 1  wherein R 6  is [2-(diethylamino)-2-hydroxy]ethylaminocarbonyl, 2-(N-ethyl-N-2-hydroxyethylamino)ethylaminocarbonyl, carboxymethylaminocarbonyl, or 2-hydroxyethylaminocarbonyl.  
     
     
         41 . The compound of  claim 1  wherein R 5  is —COR 10  wherein R 10  is —NR 11 (CH 2 ) n R 12  wherein R 12  is —N + (O − )NR 13 R 14  or —N(OH)R 13  wherein R 13  and R 14  are independently selected from the group consisting of unsubstituted lower alkyl.  
     
     
         42 . The compound of  claim 1  wherein R 5  is 2-(N-hydroxy-N-ethylamino)ethylaminocarbonyl or 2-[N + (O − )(C 2 H 5 ) 2 ]ethylaminocarbonyl  
     
     
         43 . The compound of  claim 1  wherein R 6  is —COR 10  wherein R 10  is —NR 11 (CH 2 ) n R 12  wherein R 12  is —N + (O − )NR 13 R 14  or —N(OH)R 13  wherein R 13  and R 14  are independently selected from the group consisting of unsubstituted lower alkyl.  
     
     
         44 . The compound of  claim 1  wherein R 6  is 2-(N-hydroxy-N-ethylamino)ethylaminocarbonyl or 2-[N + (O − )(C 2 H 5 ) 2 ]ethylaminocarbonyl.  
     
     
         45 . The compound or salt of  claim 37 ,  38 ,  41  or  42  wherein: 
 R 6  is selected from the group consisting of hydrogen, or methyl; and  
 R 7  is selected from the group consisting of methyl, hydrogen or phenyl.  
 
     
     
         46 . The compound or salt of any of the claims  39 ,  40 ,  43 ,  44  or  20 - 22  wherein: 
 R 5  is selected from the group consisting of hydrogen, or methyl; and  
 R 7  is selected from the group consisting of methyl, hydrogen or phenyl.  
 
     
     
         47 . The compound or salt of  claim 45  wherein: 
 R 1  is hydrogen;  
 R 2  is hydrogen, cyano, chloro, fluoro, or bromo;  
 R 3  is hydrogen; and  
 R 4  is hydrogen.  
 
     
     
         48 . The compound or salt of  claim 46  wherein: 
 R 1  is hydrogen;  
 R 2  is cyano, chloro, fluoro, or bromo;  
 R 3  is hydrogen; and  
 R 4  is hydrogen.  
 
     
     
         49 . The compound or salt of  claim 1 , wherein the compound is selected from the group consisting of:  
       
         
           
           
               
               
           
         
       
       or an L-malate salt thereof.  
     
     
         50 . A pharmaceutical composition, comprising a compound or salt of  claim 1  and, a pharmaceutically acceptable carrier or excipient.  
     
     
         51 . A pharmaceutical composition, comprising a compound or salt of  claim 49  and, a pharmaceutically acceptable carrier or excipient.  
     
     
         52 . A method for the modulation of the catalytic activity of a protein kinase comprising contacting said protein kinase with a compound or salt of  claim 1  or  49 .  
     
     
         53 . The method of  claim 52  wherein said protein kinase is selected from the group consisting of a receptor tyrosine kinase, a non-receptor tyrosine kinase and a serine-threonine kinase.  
     
     
         54 . A method for treating or preventing a protein kinase related disorder in an organism comprising administering a therapeutically effective amount of a pharmaceutical composition comprising a compound or salt of  claim 50  or  claim 51  and, a pharmaceutically acceptable carrier or excipient to said organism.  
     
     
         55 . The method of  claim 54  wherein said protein kinase related disorder is selected from the group consisting of a receptor tyrosine kinase related disorder, a non-receptor tyrosine kinase related disorder and a serine-threonine kinase related disorder.  
     
     
         56 . The method of  claim 54  wherein said protein kinase related disorder is selected from the group consisting of an EGFR related disorder, a PDGFR related disorder, an IGFR related disorder and a flk related disorder.  
     
     
         57 . The method of  claim 54  wherein said protein kinase related disorder is a cancer selected from the group consisting of squamous cell carcinoma, astrocytoma, Kaposi's sarcoma, glioblastoma, lung cancer, bladder cancer, head and neck cancer, melanoma, ovarian cancer, prostate cancer, breast cancer, small-cell lung cancer, glioma, colorectal cancer, genitourinary cancer and gastrointestinal cancer.  
     
     
         58 . The method of claim m  54  wherein said protein kinase related disorder is selected from the group consisting, of diabetes, an autoimmune disorder, a hyperproliferation disorder, restenosis, fibrosis, psoriasis, von Heppel-Lindau disease, osteoarthritis, rheumatoid arthritis, angiogenesis, an inflammatory disorder, an immunological disorder and a cardiovascular disorder.  
     
     
         59 . The method of  claim 54  wherein said organism is a human.  
     
     
         60 . An intermediate of Formula (II):  
       
         
           
           
               
               
           
         
       
       wherein: 
 R 5  is selected from the group consisting of hydrogen, alkyl and —C(O)R 10 ;  
 R 6  is selected from the group consisting of hydrogen, alkyl and —C(O)R 10 ;  
 R 7  is selected from the group consisting of hydrogen, alkyl, aryl, heteroaryl, —C(O)R 17  and —C(O)R 10 ;  
 R 6  and R 7  may combine to form a group selected from the group consisting of —(CH 2 ) 4 —, —(CH 2 ) 5 — and —(CH 2 ) 6 —;  
 with the proviso that at least one of R 5 , R 6  or R 7  must be —C(O)R 10 ;  
 R 10  is selected from the group consisting of hydroxy, alkoxy, aryloxy, —N(R 11 )(CH 2 ) n R 12  and —NR 13 R 14 ;  
 R 11  is selected from the group consisting of hydrogen and alkyl;  
 R 12  is selected from the group consisting of —NR 13  R 14 , hydroxy, —C(O)R 15 , aryl and heteroaryl;  
 R 13  and R 14  are independently selected from the group consisting of hydrogen, alkyl, cyanoalkyl, cycloalkyl, aryl and heteroaryl; or  
 R 13  and R 14  may combine to form a heterocyclo group;  
 R 15  is selected from the group consisting of hydrogen, hydroxy, alkoxy and aryloxy;  
 R 17  is selected from the group consisting of alkyl, cycloalkyl, aryl and heteroaryl; and  
 n is 1, 2, 3, or 4.