Cycloalkyl substituted pyrimidinediamine compounds and their uses

1. A compound according to structural formula (I):

or a salt or N-oxide thereof, wherein:

R 2 is a (C6-C20)aryl, 5-20 membered heteroaryl, (C7-C28)arylalkyl or 6-28 membered heteroarylalkyl group, each optionally substituted with one or more of the same or different R 8 groups;

R 4 is a saturated or unsaturated, bridged (C3-C16)cycloalkyl ring substituted with an R 7 group;

R 5 is selected from hydrogen, (C1-C8)allyl optionally substituted with one or more of the same or different R 8 groups, and an electronegative group; and

R 7 is —C(O)OR d or —C(O)NR d R d ,

wherein

the electronegative group is selected from the group consisting of —CN, —NC, —NO 2 , halo, (C1-C3)haloalkyl, (C1-C3)perhaloalkyl, (C1-C3)fluoroalkyl, (C1-C3)perfluoroalkyl, —CF 3 , (C1-C3)haloalkoxy, (C1-C3)perhaloalkoxy, (C1-C3)fluoroalkoxy, (C1-C3)perfluoroalkoxy, —OCF 3 , —C(O)R a , —C(O)OR a , —C(O)CF 3 , and —C(O)OCF 3 ;

each R 8 group is, independently of the others, selected from a water-solubilizing group, R a , R b , (C3-C8)cycloalkyl optionally substituted with one or more of the same or different R a and/or R b groups, lower heterocycloalkyl optionally substituted with one or more of the same or different R a and/or R b groups, (C1-C8)alkoxy optionally substituted with one or more of the same or different R b groups and —O—(CH 2 ) x —R b , where x is an integer ranging from 1 to 6;

each R a is, independently of the others, selected from hydrogen, (C1-C8)alkyl, (C3-C8)cycloalkyl, (C6-C14)aryl, naphthyl, (C7-C20)arylalkyl and benzyl;

each R b is, independently of the others, selected from ═O, —OR a , (C1-C3) haloalkyloxy, —OCF 3 , ═S, —SR a , ═NR a , ═NOR a , —NR c R c , halogen, —CF 3 , —CN, —NC, —OCN, —SCN, —NO, —NO 2 , ═N 2 , —N 3 , —S(O)R a , —S(O) 2 R a , —S(O) 2 OR a , —S(O)NR a R a , —S(O) 2 NR c R c , —OS(O)R a , —OS(O) 2 R a , —OS(O) 2 OR a , —OS(O) 2 NR c R c , —C(O)R a , —C(O)OR a , —C(O)NR c R c , —C(NH)NR c R c , —C(NR a )NR c R c , —C(NOH)R a , —C(NOH)NR c R c , —OC(O)R a , —OC(O)OR a , —OC(O)NR c R c , —OC(NH)NR c R c and —OC(NR a )NR c R c ;

each R c is, independently of the others, selected from R a or, alternatively, two R c that are bonded to the same nitrogen atom may be taken together with this nitrogen atom to form a 5-8 membered heterocycloalkyl group which may optionally include from 1 to 3 additional heteroatomic groups selected from O, S, N—(CH 2 ) y —R a , N—(CH 2 ) y —C(O)R a , N—(CH 2 ) y —C(O)OR a , N—(CH 2 ) y —S(O) 2 R a , N—(CH 2 ) y —S(O) 2 OR a and N—(CH 2 ) y —C(O)NR a R a , where y is an integer ranging from 0 to 6, and which may optionally include one or more of the same or different R 8 and/or (C1-C8)alkyl substituents; and

each R d is, independently of the others, selected from R a , R c and a chiral auxiliary group; and

the water-solubilizing group is of the formula:

morpholino, piperidinyl, (C1-C6)N-alkyl piperidinyl, N-methyl piperidinyl, piperazinyl, (C1-C6)N-alkylpiperazinyl, N-methylpiperazinyl, N-ethyl piperidinyl, N-ethyl piperazinyl, pyrrolidinyl, N-alkyl pyrrolidinyl, N-methyl pyrrolidinyl, diazepinyl, N-ethyl pyrrolidinyl, N-alkyl azepinyl, N-methyl azepinyl, N-ethyl azepinyl, homopiperazinyl, N-methyl homopiperazinyl, N-ethyl homopiperazinyl, imidazoyl, where Y is selected from CH and N, Z is selected from CH 2 , O, S, N, NH, N—(CH 2 ) y —R a , N—(CH 2 ) y —C(O)R a , N—(CH 2 ) y —C(O)OR a , N—(CH 2 ) y —S(O) 2 R a , N—(CH 2 ) y —S(O) 2 OR a and N—(CH 2 ) y —C(O)NR c R c , with the proviso that Y and Z are not both simultaneously CH and CH 2 , respectively; and

the chiral auxiliary group is

wherein R 9 is hydrogen or (C1-C8) alkyl.

2. The compound according to claim 1 , wherein R 2 is a substituted phenyl of the formula:

wherein one of R 11 , R 12 or R 13 is a water-solubilizing group, and the other two of R 11 , R 12 and R 13 are each, independently of one another, selected from hydrogen, lower alkyl, (C1-C3) alkyl, methyl, halo, chloro, fluoro, hydroxy, (C1-C3) hydroxyalkyl, —O(CH 2 ) x —R b , —NR c R c , —C(O)NR c R c , —C(O)NHR a and —C(O)NHCH 3 .

3. The compound according to claim 2 wherein, R 11 is hydrogen;

R 12 is selected from

morpholino, piperidinyl, (C1-C3) N-alkyl piperidinyl, N-methyl piperidinyl, piperazinyl, (C1-C3) N-alkylpiperazinyl, N-methylpiperazinyl, N-ethyl piperidinyl, N-ethyl piperazinyl, pyrrolidinyl, N-alkyl pyrrolidinyl, N-methylpyrrolidinyl, diazepinyl, N-ethyl pyrrolidinyl, N-alkyl azepinyl, N-methyl azepinyl, N-ethyl azepinyl, homopiperazinyl, N-methyl homopiperazinyl, N-ethyl homopiperazinyl and imidazoyl; and

R 13 is selected from hydrogen, methyl, methoxy, trifluoromethyl and chloro.

4. A composition comprising a compound according to claim 1 and a carrier, excipient and/or diluent.

5. The composition of claim 4 in which the carrier, excipient and/or diluent is acceptable for pharmaceutical uses.