Dihydropteridinones, processes for preparing them and their use as pharmaceutical compositions

1. A Compound of the formula (I):

wherein

R 1 , R 2 which are identical or different, denote hydrogen or optionally substituted C 1 -C 6 -alkyl, or

R 1 and R 2 together denote a 2- to 5-membered alkyl bridge which optionally contain 1 to 2 heteroatoms,

R 3 denotes hydrogen or a group selected from among optionally substituted C 1 -C 12 -alkyl, C 2 -C 12 -alkenyl, C 2 -C 12 -alkynyl and C 6 -C 14 -aryl, or a group selected from among optionally substituted and/or bridged C 3 -C 12 -cycloalkyl, C 3 -C 12 -cycloalkenyl, C 7 -C 12 -polycycloalkyl, C 7 -C 12 -polycycloalkenyl, C 5 -C 12 -spirocycloalkyl, C 3 -C 12 -heterocycloalkyl which contains 1 to 2 heteroatoms, and C 3 -C 12 -heterocycloalkenyl which contains 1 to 2 heteroatoms, or

R 1 and R 3 or R 2 and R 3 together denote a saturated or unsaturated C 3 -C 4 -alkyl bridge which optionally contain 1 heteroatom,

R 4 denotes a group selected from among hydrogen, —CN, hydroxy, —NR 6 R 7 and halogen, or

a group selected from among optionally substituted C 1 -C 6 -alkyl, C 2 -C 6 -alkenyl, C 2 -C 6 -alkynyl, C 1 -C 5 -alkyloxy, C 2 -C 5 -alkenyloxy, C 2 -C 5 -alkynyloxy, C 1 -C 6 -alkylthio, C 1 -C 6 -alkylsulphoxo and C 1 -C 6 -alkylsulphonyl.

L denotes a linker selected from among optionally substituted C 2 -C 10 -alkyl, C 2 -C 10 -alkenyl, C 6 -C 14 -aryl, —C 2 -C 4 -alkyl-C 6 -C 14 -aryl, —C 6 -C 14 -aryl-C 1 -C 4 -alkyl, optionally bridged C 3 -C 12 -cycloalkyl and heteroaryl which contains 1 or 2 nitrogen atoms,

n denotes 0 or 1

m denotes 1 or 2

R 5 denotes a group selected from among optionally substituted morpholinyl, piperidinyl, piperazinyl, piperazinylcarbonyl, pyrrolidinyl, tropenyl, R 8 -diketomethylpiperazinyl, sulphoxomorpholinyl, sulphonylmorpholinyl, thiomorpholinyl, —NR 8 R 9 and azacycloheptyl,

R 6 , R 7 which are identical or different, denote hydrogen or C 1 -C 4 -alkyl, and

R 8 , R 9 denote unsubstituted nitrogen substituents at R 5 , which are identical or different, denote either hydrogen or a group selected from among C 1 -C 6 -alkyl, —C 1 -C 4 -alkyl-C 3 -C 10 -cycloalkyl, C 3 -C 10 -cycloalkyl, C 6 -C 14 -aryl, —C 1 -C 4 -alkyl-C 6 -C 14 -aryl, pyranyl, pyridinyl, pyrimidinyl, C 1 -C 4 -alkyloxycarbonyl, C 6 -C 14 -arylcarbonyl, C 1 -C 4 -alkylcarbonyl, C 6 -C 14 -arylmethyloxycarbonyl, C 6 -C 14 -arylsulphonyl, C 1 -C 4 -alkylsulphonyl and C 6 -C 14 -aryl-C 1 -C 4 -alkylsulphonyl,

optionally in the form of the tautomers, the racemates, the enantiomers, the diastereomers and the mixtures thereof, and optionally the pharmacologically acceptable acid addition salts thereof.

2. The Compound according to claim 1 wherein:

L denotes a linker selected from among optionally substituted C 2 -C 10 -alkyl, C 2 -C 10 -alkenyl, C 6 -C 14 -aryl, —C 2 -C 4 -alkyl-C 6 -C 14 -aryl, —C 6 -C 14 -aryl-C 1 -C 4 -alkyl, optionally bridged C 3 -C 12 -cycloalkyl and heteroaryl which contains 1 or 2 nitrogen atoms

n denotes 1

m denotes 1 or 2

R 5 denotes a group which is bound to L via a nitrogen atom, selected from among optionally substituted morpholinyl, piperidinyl, R 8 -piperazinyl, pyrrolidinyl, tropenyl, R 8 -diketomethylpiperazinyl, sulphoxomorpholinyl, sulphonylmorpholinyl, thiomorpholinyl, —NR 8 R 9 and azacycloheptyl,

R 8 , R 9 denote unsubstituted nitrogen substituents at R 5 , which are identical or different, hydrogen or a group selected from among C 1 -C 6 -alkyl, —C 1 -C 4 -alkyl-C 3 -C 10 -cycloalkyl, C 3 -C 10 -cycloalkyl, C 6 -C 14 -aryl, —C 1 -C 4 -alkyl-C 6 -C 14 -aryl, pyranyl, pyridinyl, pyrimidinyl, C 1 -C 4 -alkyloxycarbonyl, C 6 -C 14 -arylcarbonyl, C 1 -C 4 -alkylcarbonyl, C 6 -C 14 -arylmethyloxycarbonyl, C 6 -C 14 -arylsulphonyl, C 1 -C 4 -alkylsulphonyl and C 6 -C 14 -aryl-C 1 -C 4 -alkylsulphonyl.

3. The Compound according to claim 1 , wherein:

L denotes a linker selected from among optionally substituted C 2 -C 10 -alkyl, C 2 -C 10 -alkenyl, C 6 -C 14 -aryl, —C 2 -C 4 -alkyl-C 6 -C 14 -aryl, —C 6 -C 14 -aryl-C 1 -C 4 -alkyl, optionally bridged C 3 -C 12 -cycloalkyl and heteroaryl which contains 1 or 2 nitrogen atoms

n denotes 0 or 1

m denotes 1 or 2

R 5 denotes a group which is bound to L via a carbon atom, selected from among R 8 -piperidinyl, R 8 R 9 -piperazinyl, R 8 -pyrrolidinyl, R 8 -piperazinylcarbonyl, R 8 -tropenyl, R 8 -morpholinyl and R 8 -azacycloheptyl, and

R 8 , R 9 denote unsubstituted nitrogen substituents at R 5 , which are identical or different, hydrogen or a group selected from among C 1 -C 6 -alkyl, —C 1 -C 4 -alkyl-C 3 -C 10 -cycloalkyl, C 3 -C 10 -cycloalkyl, C 6 -C 14 -aryl, —C 1 -C 4 -alkyl-C 6 -C 14 -aryl, pyranyl, pyridinyl, pyrimidinyl, C 1 -C 4 -alkyloxycarbonyl, C 6 -C 14 -arylcarbonyl, C 1 -C 4 -alkylcarbonyl, C 6 -C 14 -arylmethyloxycarbonyl, C 6 -C 14 -arylsulphonyl, C 1 -C 4 -alkylsulphonyl and C 6 -C 14 -aryl-C 1 -C 4 -alkylsulphonyl.

4. The Compound according to claim 3 , wherein:

R 1 , R 2 which are identical or different, denote a group selected from among hydrogen, Me, Et, Pr, or

R 1 and R 2 together form a C 2 -C 4 -alkyl bridge.

5. The Compound according to claim 4 , wherein:

R 3 denotes a group selected from among optionally substituted C 1 -C 10 -alkyl, C 3 -C 7 -cycloalkyl, C 3 -C 6 -heterocycloalkyl and C 6 -C 14 -aryl or

R 1 and R 3 or R 2 and R 3 together denote a saturated or unsaturated C 3 -C 4 -alkyl bridge which optionally contain 1 to 2 heteroatoms,

R 4 denotes a group selected from among hydrogen, OMe, OH, Me, Et, Pr, OEt, NHMe, NH 2 , F, CL, Br, O-propargyl, O-butynyl, ON, SMe, NMe 2 , CONH 2 , ethynyl, propynyl, butynyl and allyl, and

L denotes a linker selected from among optionally substituted phenyl, phenylmethyl, cyclohexyl and branched C 1 -C 6 -alkyl.

6. A pharmaceutical composition comprising a pharmaceutically effective amount of a compound according to claim 1 optionally combined with conventional excipients and/or carriers.

7. A method of inhibiting proliferation of a cell comprising contacting the cell with an anti-proliferative effective amount of a compound according to claim 1 .

8. A Process for preparing a compound of the formula (I):

wherein

R 1 -R 5 , m ,n and L are as defined in claim 1 ,

comprising reacting a compound of the formula (II):

wherein

R 1 -R 3 have the meanings given in claim 1 and A is a leaving group chosen from -o-methyl, —SCN, chlorine, bromine, iodine, methanesulohonyl,

trifluoromethanesulphonyl and P-toluenesulphonyl,

with an optionally substituted compound of the formula (III):

wherein

R 4 has the meanings given in claim 1 and

R 10 denotes OH, NH-L-R 5 , —O-methyl, —O-ethyl,

to produce the product of the formula (IV):

wherein

R 1 to R 4 has the meanings given in claim 1 and

R 10 denotes OH, —NH-L-R 5 , —O-methyl or —O -ethyl,

optionally hydrolyzing of the ester group —COR 10 ,

and reacting with an amine of general formula (V):

NH 2 -L-R 5 m   (V):

wherein

R 5 has the meanings given in claim 1 , to produce a compound of the formula (I).