Pyrrolotriazine derivatives useful for treating cancer through inhibition of aurora kinase

1. A compound of formula (I)

wherein

The A ring denotes a 5 to 7 membered aryl, heteroaryl, heterocyclic or cycloalkyl ring wherein the heteroaryl or heterocyclic rings include 1 to 3 heteroatoms selected from O, N or S;

R 1 is selected from the group consisting of hydrogen, halo, alkyl, trifluoromethyl, hydroxy, alkoxy, alkoxyalkyl, trifluoromethoxy, phenyloxy, halophenyloxy, methylphenyloxy, alkoxyphenyl, alkylphenyl, alkoxyalkylphenyl, halothiophenyl, alkylcarbonyl, nitro, cyano, carboxyl, alkoxycarbonyl, benzoyl, alkylamino, alkylaminocarbonyl, alkylaminosulfonyl, cycloalkylamino, cycloaklylalkylamino, benzylamino, alkoxyalkylamino, and heterocyclyl, or

R 1 is a group

or R 1 and R 5 together with the carbon atoms to which they are attached, form a 1,3-dioxolane or 1,4-dioxane ring, which can optionally be substituted with 1, 2, or 3 halo;

R 2 is hydrogen, halo or methyl;

R 3 is

wherein R 3-1 is hydrogen, alkyl, trifluoroethyl, alkoxyalkyl, cycloalkyl, cycloalkylalkyl, heterocyclylalkyl, dialkylaminoalkyl, hydroxycycloalkyl, and X is —O—, —NH— or —N(alkyl)-, or wherein X and R3-1 are taken together to form a heterocyclyl ring optionally substituted with alkyl, carboxamide, alkoxyalkyl, or dialkylamino;

R 4 is hydrogen or halo;

R 5 is hydrogen, halo, or alkyl; and

R 6 is hydrogen or alkyl;

or a pharmaceutically acceptable salt thereof.

2. The compound of claim 1 , wherein X is —O—.

3. The compound of claim 1 , wherein X is —NH—.

4. The compound of claim 1 , wherein R 3-1 is trifluoroethyl.

5. The compound of claim 1 , wherein X and R 3-1 are taken together to form a heterocyclyl ring optionally substituted with alkyl, carboxamide, alkoxyalkyl, or dialkylamino.

6. The compound of claim 1 , wherein R 2 is hydrogen and R 4 is halogen.

7. The compound of claim 6 , wherein R 4 is fluorine.

8. The compound of claim 1 , wherein R 6 is hydrogen.

9. The compound of claim 1 having formula (Ia):

wherein

R 1 is selected from the group consisting of hydrogen, halo, alkyl, trifluoromethyl, hydroxy, alkoxy, trifluoromethoxy, alkylcarbonyl, cyano, carboxyl, alkoxycarbonyl, alkylaminocarbonyl, alkylaminosulfonyl, and heterocyclyl, or

R 1 is a group

or R 1 and R 5 together with the carbon atoms to which they are attached, form a 1,3-dioxolane or 1,4-dioxane ring, which can optionally be substituted with 1, 2, or 3 halo;

R 2 is hydrogen, halo or methyl;

R 3 is

wherein R 3-1 is alkyl or trifluoroethyl, and X is O or —NH—;

R 4 is hydrogen or halo;

R 5 is hydrogen, halo, alkyl, or alkoxy;

or a pharmaceutically acceptable salt thereof.

10. A compound having the formula:

4-amino-5-[4-(1H-benzimidazol-2-ylamino)phenyl]-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(5-cyano-1H-benzimidazol-2-yl)amino]phenyl}-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(7-hydroxy-1H-benzimidazol-2-yl)amino]phenyl}-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(6-chloro-1H-benzimidazol-2-yl)amino]phenyl}-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-N-(2,2,2-trifluoroethyl)-5-(4-{[6-(trifluoromethyl)-1H-benzimidazol-2-yl]amino}phenyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(5,7-difluoro-1H-benzimidazol-2-yl)amino]phenyl}-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(6-fluoro-1H-benzimidazol-2-yl)amino]phenyl}-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(6-methoxy-1H-benzimidazol-2-yl)amino]phenyl}-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(6-bromo-1H-benzimidazol-2-yl)amino]phenyl}-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(6-tert-butyl-1H-benzimidazol-2-yl)amino]phenyl}-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(6-benzoyl-1H-benzimidazol-2-yl)amino]phenyl}-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(5,6-dichloro-1H-benzimidazol-2-yl)amino]phenyl}-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(6-chloro-5-fluoro-1H-benzimidazol-2-yl)amino]phenyl}-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(5,6-difluoro-1H-benzimidazol-2-yl)amino]phenyl}-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(6,7-dimethyl-1H-benzimidazol-2-yl)amino]phenyl}-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-[4-(1H-thieno[3,4-d]imidazol-2-ylamino)phenyl]-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(2,2-difluoro-5H-[1,3]dioxolo[4,5-f]benzimidazol-6-yl)amino]phenyl}-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-[4-(3H-imidazo[4,5-b]pyridin-2-ylamino)phenyl]-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-(4-{[6-(4-methoxyphenyl)-1H-benzimidazol-2-yl]amino}phenyl)-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(5-pyrrolidin-1-yl-3H-imidazo[4,5-b]pyridin-2-yl)amino]phenyl}-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-[4-(9H-purin-8-ylamino)phenyl]-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(7-methyl-1H-benzimidazol-2-yl)amino]phenyl}-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(6-nitro-1H-benzimidazol-2-yl)amino]phenyl}-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(5-methoxy-3H-imidazo[4,5-b]pyridin-2-yl)amino]phenyl}-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(6-iodo-3H-imidazo[4,5-b]pyridin-2-yl)amino]phenyl}-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(5-chloro-3H-imidazo[4,5-b]pyridin-2-yl)amino]phenyl}-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(6-phenoxy-1H-benzimidazol-2-yl)amino]phenyl}-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(5-methyl-3H-imidazo[4,5-b]pyridin-2-yl)amino]phenyl}-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-(4-{[6-(4-fluorophenoxy)-1H-benzimidazol-2-yl]amino}phenyl)-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(6-methyl-3H-imidazo[4,5-b]pyridin-2-yl)amino]phenyl}-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-N-(2,2,2-trifluoroethyl)-5-(4-{[6-(trifluoromethoxy)-1H-benzimidazol-2-yl]amino}phenyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(7-fluoro-6-phenoxy-1H-benzimidazol-2-yl)amino]phenyl}-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(5-ethoxy-1H-benzimidazol-2-yl)amino]phenyl}-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-(4-{[7-fluoro-6-(4-methylphenoxy)-1H-benzimidazol-2-yl]amino}phenyl)-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-(4-{[7-fluoro-6-(4-fluorophenoxy)-1H-benzimidazol-2-yl]amino}phenyl)-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(1-methyl-1H-benzimidazol-2-yl)amino]phenyl}-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(7-fluoro-6-pyrrolidin-1-yl-1H-benzimidazol-2-yl)amino]phenyl}-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(5-phenoxy-3H-imidazo[4,5-b]pyridin-2-yl)amino]phenyl}-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-(4-{[7-fluoro-6-(2-fluorophenoxy)-1H-benzimidazol-2-yl]amino}phenyl)-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-(4-{[7-fluoro-6-(3-fluorophenoxy)-1H-benzimidazol-2-yl]amino}phenyl)-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-(4-{[7-fluoro-6-(2-methylphenoxy)-1H-benzimidazol-2-yl]amino}phenyl)-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-(4-{[7-fluoro-6-(3-methylphenoxy)-1H-benzimidazol-2-yl]amino}phenyl)-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-(4-{[7-fluoro-6-(isopropylamino)-1H-benzimidazol-2-yl]amino}phenyl)-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide trifluoroacetate;

5-{4-[(6-acetyl-1-methyl-1H-benzimidazol-2-yl)amino]phenyl}-4-amino-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(6-methyl-9H-purin-8-yl)amino]phenyl}-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(5-morpholin-4-yl-3H-imidazo[4,5-b]pyridin-2-yl)amino]phenyl}-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-(4-{[5-(cyclobutylamino)-3H-imidazo[4,5-b]pyridin-2-yl]amino}phenyl)-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-(4-{[5-(cyclohexylamino)-3H-imidazo[4,5-b]pyridin-2-yl]amino}phenyl)-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-(4-{[5-(3,4-dimethylphenoxy)-3H-imidazo[4,5-b]pyridin-2-yl]amino}phenyl)-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-[4-({5-[(3-fluorophenyl)thio]-3H-imidazo[4,5-b]pyridin-2-yl}amino)phenyl]-N-(2,2,2-trifluoro ethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-[4-({5-[(cyclohexylmethyl)amino]-3H-imidazo[4,5-b]pyridin-2-yl}amino)phenyl]-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-(4-{[5-(isobutylamino)-3H-imidazo[4,5-b]pyridin-2-yl]amino}phenyl)-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-[4-({5-[(2-methoxyethyl)amino]-3H-imidazo[4,5-b]pyridin-2-yl}amino)phenyl]-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-(4-{[5-(tert-butylamino)-3H-imidazo[4,5-b]pyridin-2-yl]amino}phenyl)-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-(4-{[5-(propylamino)-3H-imidazo[4,5-b]pyridin-2-yl]amino}phenyl)-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-[4-({5-[(2-methoxyethyl)(methyl)amino]-3H-imidazo[4,5-b]pyridin-2-yl}amino)phenyl]-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-(4-{[5-(cyclopropylamino)-3H-imidazo[4,5-b]pyridin-2-yl]amino}phenyl)-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-(4-{[5-(3,3-difluoropyrrolidin-1-yl)-3H-imidazo[4,5-b]pyridin-2-yl]amino}phenyl)-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(5,7-difluoro-1H-benzimidazol-2-yl)amino]-3-fluorophenyl}-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(2,2-difluoro-5H-[1,3]dioxolo[4,5-f]benzimidazol-6-yl)amino]-3-fluorophenyl}-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(6-chloro-1H-benzimidazol-2-yl)amino]-3-fluorophenyl}-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{3-fluoro-4-[(5-methyl-3H-imidazo[4,5-b]pyridin-2-yl)amino]phenyl}-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{3-fluoro-4-[(5-morpholin-4-yl-3H-imidazo[4,5-b]pyridin-2-yl)amino]phenyl}-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{3-fluoro-4-[(5-pyrrolidin-1-yl-3H-imidazo[4,5-b]pyridin-2-yl)amino]phenyl}-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-[3-fluoro-4-(3H-imidazo[4,5-b]pyridin-2-ylamino)phenyl]-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(5-chloro-6-fluoro-1H-benzimidazol-2-yl)amino]-3-fluorophenyl}-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-[3-fluoro-4-(1H-thieno[3,4-d]imidazol-2-ylamino)phenyl]-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(5-benzoyl-1H-benzimidazol-2-yl)amino]-3-fluorophenyl}-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-[3-fluoro-4-(1H-imidazo[4,5-c]pyridin-2-ylamino)phenyl]-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{3-fluoro-4-[(7-methyl-1H-benzimidazol-2-yl)amino]phenyl}-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(5,7-difluoro-1H-benzimidazol-2-yl)amino]phenyl}pyrrolo[2,1-f][1,2,4]triazine-6-carboxylic acid;

4-amino-N-(tert-butyl)-5-{4-[(5,7-difluoro-1H-benzimidazol-2-yl)amino]phenyl}pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(5,7-difluoro-1H-benzimidazol-2-yl)amino]phenyl}-N-ethylpyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(5,7-difluoro-1H-benzimidazol-2-yl)amino]phenyl}-N,N-dimethylpyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(5,7-difluoro-1H-benzimidazol-2-yl)amino]phenyl}-N-(2-methoxyethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

5-{4-[(5,7-difluoro-1H-benzimidazol-2-yl)amino]phenyl}-6-(morpholin-4-ylcarbonyl)pyrrolo[2,1-f][1,2,4]triazin-4-amine;

4-amino-N-cyclobutyl-5-{4-[(5,7-difluoro-1H-benzimidazol-2-yl)amino]phenyl}pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-N-cyclohexyl-5-{4-[(5,7-difluoro-1H-benzimidazol-2-yl)amino]phenyl}pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(5,7-difluoro-1H-benzimidazol-2-yl)amino]phenyl}-N-(3-methylbutyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-N-(cyclopropylmethyl)-5-{4-[(5,7-difluoro-1H-benzimidazol-2-yl)amino]phenyl}pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

1-[(4-amino-5-{4-[(5,7-difluoro-1H-benzimidazol-2-yl)amino]phenyl}pyrrolo[2,1-f][1,2,4]triazin-6-yl)carbonyl]piperidine-4-carboxamide;

4-amino-5-{4-[(5,7-difluoro-1H-benzimidazol-2-yl)amino]phenyl}-N-(3-pyrrolidin-1-ylpropyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(5,7-difluoro-1H-benzimidazol-2-yl)amino]phenyl}-N-(3-morpholin-4-ylpropyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(5,7-difluoro-1H-benzimidazol-2-yl)amino]phenyl}-N-[2-(dimethylamino)ethyl]pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-N-cyclopentyl-5-{4-[(5,7-difluoro-1H-benzimidazol-2-yl)amino]phenyl}pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(5,7-difluoro-1H-benzimidazol-2-yl)amino]phenyl}-N-(2-ethoxyethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(5,7-difluoro-1H-benzimidazol-2-yl)amino]phenyl}-N-(2-hydroxycyclohexyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(5,7-difluoro-1H-benzimidazol-2-yl)amino]phenyl}-N-(tetrahydro-2H-pyran-4-ylmethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(5,7-difluoro-1H-benzimidazol-2-yl)amino]phenyl}-N-ethyl-N-methylpyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(5,7-difluoro-1H-benzimidazol-2-yl)amino]phenyl}-N-ethyl-N-isopropylpyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

5-{4-[(5,7-difluoro-1H-benzimidazol-2-yl)amino]phenyl}-6-{[2-(methoxymethyl)pyrrolidin-1-yl]carbonyl}pyrrolo[2,1-f][1,2,4]triazin-4-amine;

4-amino-5-{4-[(5,7-difluoro-1H-benzimidazol-2-yl)amino]phenyl}-N-isopropyl-N-methylpyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(5,7-difluoro-1H-benzimidazol-2-yl)amino]phenyl}-N-methyl-N-propylpyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(5,7-difluoro-1H-benzimidazol-2-yl)amino]phenyl}-N-[2-(dimethylamino)ethyl]-N-methylpyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

5-{4-[(5,7-difluoro-1H-benzimidazol-2-yl)amino]phenyl}-6-{[(3R)-3-(dimethylamino)pyrrolidin-1-yl]carbonyl}pyrrolo[2,1-f][1,2,4]triazin-4-amine;

5-{4-[(5,7-difluoro-1H-benzimidazol-2-yl)amino]phenyl}-6-(pyrrolidin-1-ylcarbonyl)pyrrolo[2,1-f][1,2,4]triazin-4-amine;

4-amino-5-{4-[(5,7-difluoro-1H-benzimidazol-2-yl)amino]phenyl}-N-ethyl-N-propylpyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

5-{4-[(5,7-difluoro-1H-benzimidazol-2-yl)amino]phenyl}-6-[(4-methylpiperazin-1-yl)carbonyl]pyrrolo[2,1-f][1,2,4]triazin-4-amine;

4-[(4-amino-5-{4-[(5,7-difluoro-1H-benzimidazol-2-yl)amino]phenyl}pyrrolo[2,1-f][1,2,4]triazin-6-yl)carbonyl]piperazin-2-one;

4-amino-5-{4-[(5,7-difluoro-1H-benzimidazol-2-yl)amino]phenyl}-N-methyl-N-(tetrahydro-2H-pyran-4-ylmethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(7-fluoro-6-phenoxy-1H-benzimidazol-2-yl)amino]phenyl}pyrrolo[2,1-f][1,2,4]triazine-6-carboxylic acid;

4-amino-5-{4-[(7-fluoro-6-phenoxy-1H-benzimidazol-2-yl)amino]phenyl}-N-methylpyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(7-fluoro-6-phenoxy-1H-benzimidazol-2-yl)amino]phenyl}-N-propylpyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(7-fluoro-6-phenoxy-1H-benzimidazol-2-yl)amino]phenyl}-N-isopropylpyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-N-cyclopropyl-5-{4-[(7-fluoro-6-phenoxy-1H-benzimidazol-2-yl)amino]phenyl}pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-N-ethyl-5-{4-[(7-fluoro-6-phenoxy-1H-benzimidazol-2-yl)amino]phenyl}-N-methylpyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

5-{4-[(7-fluoro-6-phenoxy-1H-benzimidazol-2-yl)amino]phenyl}-6-(piperidin-1-ylcarbonyl)pyrrolo[2,1-f][1,2,4]triazin-4-amine;

5-{4-[(7-fluoro-6-phenoxy-1H-benzimidazol-2-yl)amino]phenyl}-6-(morpholin-4-ylcarbonyl)pyrrolo[2,1-f][1,2,4]triazin-4-amine;

4-amino-N-ethyl-5-{4-[(5-pyrrolidin-1-yl-3H-imidazo[4,5-b]pyridin-2-yl)amino]phenyl}pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(7-fluoro-6-phenoxy-1H-benzimidazol-2-yl)amino]phenyl}-N-(2-methoxyethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-{4-[(7-fluoro-6-phenoxy-1H-benzimidazol-2-yl)amino]phenyl}-N-isobutylpyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-N-cyclopentyl-5-{4-[(7-fluoro-6-phenoxy-1H-benzimidazol-2-yl)amino]phenyl}pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

5-{4-[(7-fluoro-6-phenoxy-1H-benzimidazol-2-yl)amino]phenyl}-6-(pyrrolidin-1-ylcarbonyl)pyrrolo[2,1-f][1,2,4]triazin-4-amine;

4-amino-N-(cyclopropylmethyl)-5-{4-[(7-fluoro-6-phenoxy-1H-benzimidazol-2-yl)amino]phenyl}pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-(4-{[5-(4-methylphenyl)-3H-imidazo[4,5-b]pyridin-2-yl]amino}phenyl)-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-[4-({5-[3-(methoxymethyl)phenyl]-3H-imidazo[4,5-b]pyridin-2-yl}amino)phenyl]-N-(2,2,2-trifluoroethyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-N-(tert-butyl)-5-{4-[(6-chloro-3H-imidazo[4,5-b]pyridin-2-yl)amino]-3-fluorophenyl}pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-N-(tert-butyl)-5-{4-[(2,2-difluoro-5H-[1,3]dioxolo[4,5-f]benzimidazol-6-yl)amino]-3-fluorophenyl}pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

4-amino-5-(4-{[5-(trifluoromethyl)-3H-imidazo[4,5-b]pyridin-2-yl]amino}phenyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxylic acid;

4-amino-N-(2,2,2-trifluoroethyl)-5-(4-{[5-(trifluoromethyl)-3H-imidazo[4,5-b]pyridin-2-yl]amino}phenyl)pyrrolo[2,1-f][1,2,4]triazine-6-carboxamide;

ethyl 4-amino-5-[4-(1H-benzimidazol-2-ylamino)phenyl]pyrrolo[2,1-f][1,2,4]triazine-6-carboxylate;

ethyl 4-amino-5-{4-[(5-methoxy-1H-benzimidazol-2-yl)amino]phenyl}pyrrolo[2,1-f][1,2,4]triazine-6-carboxylate;

or a pharmaceutically acceptable salt thereof.

11. A process for preparing a compound of claim 1 , comprising

[A] reacting a compound of formula (II)

wherein R 2 , R 3 and R 4 have the meaning indicated in claim 1 ,

with a diamino compound of formula (III)

wherein A, R 1 , R 5 and R 6 have the meaning indicated in claim 1 , in the presence of thiocarbonyldiimidazole, followed by cyclization with a coupling agent; or

[B] coupling a compound of formula (II), wherein R 2 , R 3 and R 4 have the meaning indicated in claim 1 , with a 2-chlorobenzimidazole of formula (IV),

wherein R 1 and R 5 have the meaning indicated in claim 1 .

12. The process of claim 11 , wherein the compound of formula (III), has the formula (IIIa)

wherein R 1 and R 5 have the meaning indicated in claim 1 .

13. A pharmaceutical composition comprising a compound as defined in claim 1 and at least one pharmaceutically acceptable excipient.

14. A method of treating cancer of the breast, comprising administering to a mammal in need thereof an effective amount of a compound as defined in claim 1 .