Prodrugs of 2,4-pyrimidinediamine compounds and their uses

1. A prodrug compound, or a salt, solvate, hydrate or N-oxide thereof, comprising a 2,4-pyrimidinediamine moiety and at least one progroup R p , said progroup R p being covalently linked to a primary or secondary amino nitrogen atom of the 2,4-pyrimidinediamine moiety,

wherein R p is of the formula —CR d R d -AR 3 , where each R d is, independently of the other, selected from hydrogen, cyano, optionally substituted (C1-C20) alkyl, (C1-C20) perfluoroalkyl, optionally substituted (C7-C30) arylalkyl and optionally substituted 6-30 membered heteroarylalkyl, where each optional substituent is, independently of the others, selected from hydrogen, alkyl, aryl, arylalkyl, heteroaryl and heteroalkyl, or, alternatively, the two R d are taken together with the carbon atom to which they are bonded to form a cycloalkyl containing from 3 to 8 carbon atoms; A is selected from O, S and NR 50 , where R 50 is selected from hydrogen, alkyl, aryl, arylalkyl, heteroaryl, heteroarylalkyl and cycloheteroalkyl, or alternatively is combined with R 3 , and, together with the nitrogen to which they are attached, form a three to seven membered ring; and R 3 represents a group that can be metabolized in vivo to yield a group of the formula —CR d R d -AH, and

R 3 is selected from R f , —C(O)R f , —C(O)OR f , —C(O)NR f R f and —SiR f R f R f , where each R f is, independently of the others, selected from hydrogen, optionally substituted lower alkyl, optionally substituted lower heteroalkyl, optionally substituted lower cycloalkyl, optionally substituted lower heterocycloalkyl, optionally substituted (C6-C10) aryl, optionally substituted 5-10 membered heteroaryl, optionally substituted (C7-C18) arylalkyl and optionally substituted 6-18 membered heteroarylalkyl.

2. The prodrug compound of claim 1 , wherein the compound has structural formula (I):

or a salt, solvate, hydrate, or N-oxide thereof, wherein,

Y is selected from CH 2 , NR 24 , O, S, S(O) and S(O) 2 ;

Z 1 and Z 2 are each, independently of one another, selected from CH and N;

R 2 is selected from (C 1 -C 6 ) alkyl optionally substituted with one or more of the same or different R 8 groups, (C 3 -C 8 ) cycloalkyl optionally substituted with one or more of the same or different R 8 groups, cyclohexyl optionally substituted with one or more of the same or different R 8 groups, 3-8 membered cycloheteroalkyl optionally substituted with one or more of the same or different R 8 groups, (C 6 -C 14 ) aryl optionally substituted with one or more of the same or different R 8 groups, phenyl optionally substituted with one or more of the same or different R 8 groups and 5-15 membered heteroaryl optionally substituted with one or more of the same or different R 8 groups;

R 5 is selected from halo, fluoro, cyano, nitro, trihalomethyl and trifluoromethyl;

R 8 is selected from R a , R b , R a substituted with one or more of the same or different R a or R b , —OR a substituted with one or more of the same or different R a or R b , —B(OR a ) 2 , —B(NR C R C ) 2 , —(CH 2 ) m —R b , —(CHR a ) m —R b , —O—(CH 2 ) m —R b , —S—(CH 2 ) m —R b , —O—CHR a R b , —O—CR a (R b ) 2 , —O—(CHR a ) m —R b , —O—(CH 2 ) m —CH[(CH 2 ) m R b ]R b , —S—(CHR a ) m —R b , —C(O)NH—(CH 2 ) m —R b , —C(O)NH—(CHR a ) m —R b , —O—(CH 2 ) m —C(O)NH—(CH 2 ) m —R b , —S—(CH 2 ) m —C(O)NH—(CH 2 ) m —R b , —O—(CHR a ) m —C(O)NH—(CHR a ) m —R b , —S—(CHR a ) m —C(O)NH—(CHR a ) m —R b , —NH—(CH 2 ) m —R b , —NH—(CHR a ) m —R b , —NH[(CH 2 ) m R b ], —N[CH 2 ) m R b ] 2 , —NH—C(O)—NH—(CH 2 ) m —R b , —NH—C(O)—(CH 2 ) m —CHR b R b and —NH—(CH 2 ) m —C(O)—NH—(CH 2 ) m —R b ;

R 17 is selected from hydrogen, halogen, fluoro, lower alkyl and methyl or, alternatively, R 17 may be taken together with R 18 to form an oxo (═O) group or, together with the carbon atom to which they are attached, a spirocycle containing from 3 to 7 carbon atoms;

R 18 is selected from hydrogen, halogen, fluoro, lower alkyl and methyl or, alternatively, R 18 may be taken together with R 17 to form an oxo (═O) group or, together with the carbon atom to which they are attached, a spirocycle containing from 3 to 7 carbon atoms;

R 19 is selected from hydrogen, lower alkyl, and methyl or, alternatively, R 19 may be taken together with R 20 to form an oxo (═O) group or, together with the carbon atom to which they are attached, a spirocycle containing from 3 to 7 carbon atoms;

R 20 is selected from hydrogen, lower alkyl and methyl or, alternatively, R 20 may be taken together with R 19 to form an oxo (═O) group or, together with the carbon atom to which they are attached, a spirocycle containing from 3 to 7 carbon atoms;

each R a is, independently of the others, selected from hydrogen, lower alkyl, lower cycloalkyl, cyclohexyl, (C 4 -C 11 ) cycloalkylalkyl, (C 6 -C 10 ) aryl, phenyl, (C 7 -C 16 ) arylalkyl, benzyl, 2-6 membered heteroalkyl, 3-8 membered cycloheteroalkyl, morpholinyl, piperazinyl, homopiperazinyl, piperidinyl, 4-11 membered cycloheteroalkylalkyl, 5-10 membered heteroaryl and 6-16 membered heteroarylalkyl;

each R b is a suitable group independently selected from ═O, —OR a , (C1-C3) haloalkyloxy, ═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 c R c , —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)R a , —OC(O)NR c R c , —OC(NH)NR C R C , —OC(NR a )NR C R C , —[NHC(O)] n R a , —[NR a C(O)] n R a , —[NHC(O)] n OR a , —[NR a C(O)] n OR a , —[NHC(O)] n NR c R c , —[NR a C(O)] n NR c R c , —[NHC(NH)] n NR c R c and —[NR a C(NR a )] n NR c R c ;

each R e is, independently of the others, selected from a protecting group and R a , or, alternatively, the two R e bonded to the same nitrogen atom are taken together with that nitrogen atom to form a 5 to 8-membered cycloheteroalkyl or heteroaryl which may optionally include one or more of the same or different additional heteroatoms and which may optionally be substituted with one or more of the same or different R a groups;

R 21 is a progroup R p ;

R 22 and R 23 are hydrogen or a progroup R p ;

R 24 is hydrogen, lower alkyl, or a progroup R p ;

each m is, independently of the others, an integer from 1 to 3;

and each n is, independently of the others, an integer from 0 to 3.