Tricyclic inhibitors of kinases

1. A compound of formula (I):

wherein

X is N;

Y is CR 2 ;

Z is O;

R 2 is H or C 1-6 -alkyl;

R 3 is aryl, wherein the aryl is optionally substituted with one or more substituents selected from the group consisting of C 1-6 -alkyl, C 1-6 -haloalkyl, C 2-6 -alkenyl, heterocycloalkyl, aryl, heteroaryl, halogen, oxo, cyano, nitro, —OR d , —C(O)R d , —C(O)OR d , —OC(O)R d , —SR d , —S(O)R d , —SO 2 R d , —NR e R f , —NHC(O)R e , —NHC(O)NHR e , —NHC(O)OR e , —NHSO 2 R d , —C(O)NHR e , and —SO 2 NHNR e ;

R 4 is

phenyl, which is optionally substituted with one or more R 5 ; or

R 5 , at each occurrence, is independently CN, NO 2 , halo, C 1-6 -alkyl, OR g , SR g , C(O)R g , C(O)NR h R i , C(O)OR g , NR h R i , NR h C(O)R g , S(O) 2 R g , NR h S(O) 2 R g , S(O) 2 NR h R i , aryl, cycloalkyl, heteroaryl, heterocycloalkyl, or heterocycloalkenyl, wherein the C 1-6 -alkyl is optionally substituted with one or more substituents selected from the group consisting of CN, halo, hydroxy, S(O) 2 NH(C 1-6 -alkyl), C 1-6 -alkoxy, heterocycloalkyl, cycloalkyl, heteroaryl, aryl, —NH 2 , —NHC 1-6 -alkyl, and —N(C 1-6 -alkyl) 2 ; wherein the aryl, cycloalkyl, heteroaryl, or heterocycloalkyl, alone or as part of another moiety, is optionally substituted with one or more R 7 ;

R 7 , at each occurrence, is independently CN, NO 2 , halo, oxo, C 1-6 alkyl, aryl, C 3-8 cycloalkyl, heteroaryl, heterocycloalkyl, OR m , SR m , C(O)R m , C(O)NR n R o , C(O)OR m , OC(O)R m , OC(O)NR n R o , NR n R o , NR n C(O)R m , S(O)R m , S(O)NR n R o , S(O) 2 R m , NR n S(O) 2 R m , or S(O) 2 NR n R o , wherein the C 1-6 -alkyl is optionally substituted with one or more substituents selected from the group consisting of CN, halo, hydroxy, C 1-6 -alkoxy, heterocycloalkyl, cycloalkyl, aryl, heteroaryl, —NH 2 , —NHC 1-6 -alkyl, and —N(C 1-6 -alkyl) 2 , wherein the aryl, C 3-8 cycloalkyl, heteroaryl, and heterocycloalkyl, alone or as part of another moiety, are optionally substituted with one, two or three substituents independently selected from CN, halo, and C 1-6 alkyl;

R d , at each occurrence, is independently selected from the group consisting of H, C 1-6 alkyl, C 1-6 haloalkyl, aryl, C 3-8 cycloalkyl, heteroaryl, and heterocycloalkyl;

R e and R f , at each occurrence, are independently selected from the group consisting of H, C 1-6 alkyl, C 1-6 haloalkyl, aryl, C 3-8 cycloalkyl, heteroaryl, and heterocycloalkyl;

R g , at each occurrence, is independently selected from the group consisting of H, C 1-6 alkyl, aryl, C 3-8 cycloalkyl, heteroaryl, and heterocycloalkyl; wherein the C 1-6 -alkyl is optionally substituted with one or more substituents selected from the group consisting of CN, halo, hydroxy, C 1-6 -alkoxy, heterocycloalkyl, —NH 2 , —NHC 1-6 -alkyl, and —N(C 1-6 -alkyl) 2 , and wherein the aryl, C 3-8 cycloalkyl, heteroaryl, or heterocycloalkyl, alone or as part of another moiety, is optionally substituted with one or more substituents selected from the group consisting of halo, C 1-6 -alkyl, C 1-6 -haloalkyl, C 1-6 -hydroxyalkyl, hydroxy, oxo, C 1-6 -alkoxy, C 1-6 -haloalkoxy, —C(O) C 1-6 -alkyl, —S(O) 2 C 1-6 -alkyl, —NH 2 , —NH(C 1-6 -alkyl), —N(C 1-6 -alkyl) 2 , and —N(C 1-6 -alkyl)(C 3-8 -cycloalkyl);

R h and R i , at each occurrence, are independently selected from the group consisting of H, C 1-6 alkyl, aryl, C 3-8 cycloalkyl, heteroaryl, and heterocycloalkyl; wherein the C 1-6 -alkyl is optionally substituted with one or more substituents selected from the group consisting of CN, halo, hydroxy, C 1-6 -alkoxy, heterocycloalkyl, —NH 2 , —NHC 1-6 -alkyl, and —N(C 1-6 -alkyl) 2 , and wherein the aryl, C 3-8 cycloalkyl, heteroaryl, or heterocycloalkyl, alone or as part of another moiety, is optionally substituted with one or more substituents selected from the group consisting of halo, C 1-6 -alkyl, C 1-6 -haloalkyl, C 1-6 -hydroxyalkyl, hydroxy, oxo, C 1-6 -alkoxy, C 1-6 -haloalkoxy, —C(O)C 1-6 -alkyl, —S(O) 2 C 1-6 -alkyl, —NH 2 , —NH(C 1-6 -alkyl), N(C 1-6 -alkyl) 2 , and —N(C 1-6 -alkyl)(C 3-8 -cycloalkyl);

R m , at each occurrence, is independently selected from the group consisting of H, C 1-6 alkyl, aryl, C 3-8 cycloalkyl, heteroaryl, and heterocycloalkyl; wherein the C 1-6 -alkyl is optionally substituted with one or more substituents selected from the group consisting of halo, hydroxy, C 1-6 -alkoxy, —NH 2 , —NHC 1-6 -alkyl, and —N(C 1-6 -alkyl) 2 , and wherein the aryl, C 3-8 cycloalkyl, heteroaryl, or heterocycloalkyl is optionally substituted with one or more substituents selected from the group consisting of halo, C 1-6 -alkyl, C 1-6 -haloalkyl, C 1-6 -hydroxyalkyl, hydroxy, oxo, C 1-6 -alkoxy, C 1-6 -haloalkoxy, —NH 2 , —NH(C 1-6 -alkyl), and N(C 1-6 -alkyl) 2 ;

R n and R o , at each occurrence, are independently selected from the group consisting of H, C 1-6 alkyl, aryl, C 3-8 cycloalkyl, heteroaryl, and heterocycloalkyl; wherein the C 1-6 -alkyl is optionally substituted with one or more substituents selected from the group consisting of halo, hydroxy, C 1-6 -alkoxy, —NH 2 , —NHC 1-6 -alkyl, and —N(C 1-6 -alkyl) 2 , and wherein the aryl, C 3-8 cycloalkyl, heteroaryl, or heterocycloalkyl is optionally substituted with one or more substituents selected from the group consisting of halo, C 1-6 -alkyl, C 1-6 -haloalkyl, C 1-6 -hydroxyalkyl, hydroxy, oxo, C 1-6 -alkoxy, C 1-6 -haloalkoxy, —NH 2 , —NH(C 1-6 -alkyl), and N(C 1-6 -alkyl) 2 ;

or a pharmaceutically acceptable salt or solvate thereof.

2. The compound of claim 1 , wherein R 3 is phenyl, wherein the phenyl is optionally substituted with one or two substituents selected from the group consisting of halogen, C 1-6 alkyl, C 1-6 haloalkyl, —OC 1-6 alkyl, and —OC 1-6 haloalkyl.

3. The compound of claim 1 , wherein

R 4 is phenyl, wherein the phenyl is substituted with heterocycloalkyl and optionally one or two R 5 , wherein R 5 is halo, C 1-6 -alkyl, C 1-6 haloalkyl, or OR g , wherein the heterocycloalkyl is optionally substituted with one, two, or three R 7 ; wherein R 7 is CN, NO 2 , halo, oxo, C 1-6 alkyl, aryl, C 3-8 cycloalkyl, heteroaryl, heterocycloalkyl, OR m , SR m , C(O)R m , C(O)NR n R o , C(O)OR m , OC(O)R m , OC(O)NR n R o , NR n R o , NR n C(O)R m , S(O)R m , S(O)NR n R o , S(O) 2 R m , NR n S(O) 2 R m , or S(O) 2 NR n R o , wherein the C 1-6 -alkyl is optionally substituted with one or more substituents selected from the group consisting of CN, halo, hydroxy, C 1-6 -alkoxy, heterocycloalkyl, cycloalkyl, aryl, heteroaryl, —NH 2 , —NHC 1-6 -alkyl, and —N(C 1-6 -alkyl) 2 , wherein the aryl, C 3-8 cycloalkyl, heteroaryl, and heterocycloalkyl, alone or as part of another moiety, are optionally substituted with one, two or three substituents independently selected from CN, halo, and C 1-6 alkyl.

4. A pharmaceutical composition comprising a compound or pharmaceutically acceptable salt of claim 1 and pharmaceutically acceptable excipient.

5. The compound of claim 1 selected from the group consisting of

6-(2-chlorophenyl)-2-{[4-(4-methylpiperazin-1-yl)phenyl]amino}pyrimido[5,4-e][1,2,4]triazolo[4,3-a]pyrimidin-5(6H)-one; and

6-(2-chlorophenyl)-9-methyl-2-{[4-(4-methylpiperazin-1-yl)phenyl]amino}pyrimido[5,4-e][1,2,4]triazolo[4,3-a]pyrimidin-5(6H)-one.