6,5-heterocyclic propargylic alcohol compounds and uses therefor

1. A compound of formula (I)

or a stereoisomer or pharmaceutically acceptable salt thereof,

wherein in formula I:

Y is carbon and the subscript b is the integer 1;

R 1 is C 1-2 alkyl, C 1-2 haloalkyl or —CH 2 —OH;

R 2 is C 1-6 alkyl, C 1-6 haloalkyl, 3-7 membered cycloalkyl, C 1-6 alkylene-C 3-7 membered cycloalkyl, phenyl, 5-6 membered heteroaryl, —C(═O)R x2a , —C(═O)OR x2a or —C(═O)NR x2a R x2b , wherein R x2a is selected from the group consisting of hydrogen, C 1-6 alkyl, C 2-6 alkenyl, C 2-6 alkynyl, C 1-6 heteroalkyl, 3-8 membered cycloalkyl, 3-8 membered heteroalkyl, —(C 1-6 alkylene)-(3-8 membered cycloalkyl), —(C 1-6 alkylene)-(3-8 membered heterocycloalkyl), —(C 1-6 alkylene)-(6-membered aryl) and —(C 1-6 alkylene)-(5-6 membered heteroaryl) and R x2b is selected from the group consisting of hydrogen, C 1-6 alkyl, C 2-6 alkenyl, C 2-6 alkynyl and C 1-6 heteroalkyl, and wherein R x2a and R x2b , when attached to the same nitrogen atom, are optionally combined to form a 3-7 membered heterocycloalkyl further comprising 0-2 additional heteroatoms selected from N, O and S; or alternatively R 1 and R 2 are combined to form a 3-8 membered cycloalkyl or 3-8 membered heterocycloalkyl and optionally fused thereto is a 5-6 membered heteroaryl ring comprising 1-3 heteroatoms selected from N, O and S; and

wherein the aliphatic and/or aromatic portions of R 1 and R 2 either independently or when combined, are optionally substituted with 1 to 5 R R1/2 substituents selected from the group consisting of F, Cl, Br, I, —OH, —NH 2 , —SH, —CF 3 , —OCF 3 , —SF 5 , —OCH 3 , —(X a ) 0-1 —CN, —(X a ) 0-1 —NO 2 , —(X a ) 0-1 —N 3 , —(X a ) 0-1 —OH, —(X a ) 0-1 —H, —(X a ) 0-1 —OR a , —(X a ) 0-1 —N(H)R a , —(X a ) 0-1 —N(H) 2 , —(X a ) 0-1 —N(R a ) 2 , —(X a ) 0-1 —SR a , —(X a ) 0-1 —SH, —(X a ) 0-1 —C(O)R a , —(X a ) 0-1 —S(O) 2 R a , —(X a ) 0-1 —S(O)R a , —(X a ) 0-1 —N(H)S(O) 2 R a , —(X a ) 0-1 —N(H)S(O) 2 R a , —(X a ) 0-1 —N(R a )S(O) 2 R a , —(X a ) 0-1 —OC(O)R a , —(X a ) 0-1 —N(H)C(O)OR a , —(X a ) 0-1 —N(R a )C(O)OR a , —(X a ) 0-1 —C(═O)OR a , —(X a ) 0-1 —C(═O)OH, —(X a ) 0-1 —C(═O)N(H)R a , —(X a ) 0-1 —C(═O)N(R a )R a , —(X a ) 0-1 —N(H)C(═O)R a , —(X a ) 0-1 —N(R a )C(═O)R a , —(X a ) 0-1 —N(H)C(═O)OR a and —(X a ) 0-1 —N(R a )C(═O)OR a , wherein X a is selected from the group consisting of C 1-6 alkylene, C 2-6 alkenylene, C 2-6 alkynylene, C 1-6 heteroalkylene, 3-6 membered cycloalkylene and 3-6 membered heterocycloalkylene, and R a at each occurrence is independently selected from the group consisting of C 1-6 alkyl, C 1-6 haloalkyl, C 1-6 heteroalkyl, C 2-6 alkenyl, C 2-6 alkynyl, 3-7 membered cycloalkyl and 3-7 membered heterocycloalkyl;

A is selected from the group consisting of:

wherein

X 1 , X 2 and X 3 are independently CR 5 , wherein R 5 is selected from the group consisting of hydrogen, C 1-4 alkyl, C 1-4 haloalkyl, halogen, —OC 1-6 alkyl, 3-6 membered heterocycloalkyl-C 1-3 alkyleneoxy-, —CN, —NO 2 , —NH(C 1-6 alkyl), —NH 2 and —N(C 1-6 alkyl) 2 ;

R 3 is 5-10 membered heteroaryl optionally substituted with —NR x3a R x3b , wherein R x3a and R x3b are each independently selected from the group consisting of hydrogen, C 1-6 alkyl, C 1-6 haloalkyl, C 2-6 alkenyl, C 2-6 alkynyl, C 1-6 alkoxy, C 1-6 heteroalkyl, 6-10 membered aryl, 5-10 membered heteroaryl, and wherein R 3 and the R x3a and R x3b groups of R 3 , if present, are further each independently optionally substituted with 1 to 5 R R3 substituents selected from the group consisting of F, Cl, Br, I, —OH, —NH 2 , —SH, —CF 3 , —OCF 3 , —SF 5 , —OCH 3 , —(X b ) 0-1 —CN, —(X b ) 0-1 —NO 2 , —(X b ) 0-1 —N 3 , —(X b )—OH, —(X b )—H, —(X b ) 0-1 —OR b , —(X b ) 0-1 —N(H)R b , —(X b )—N(H) 2 , —(X b ) 0-1 —N(R b ) 2 , —(X b ) 0-1 —SR b , —(X b ) 0-1 —SH, —(X b ) 0-1 —C(O)R b , —(X b ) 0-1 —S(O) 2 R b , —(X b ) 0-1 —S(O)R b , —(X b ) 0-1 —N(H)S(O) 2 R b , —(X b ) 0-1 —N(R b )S(O) 2 R b , —(X b ) 0-1 —OC(O)R b , —(X b ) 0-1 —N(H)C(O)OR b , —(X b ) 0-1 —N(R b )C(O)OR b , —(X b ) 0-1 —C(═O)OR b , —(X b ) 0-1 —C(═O)OH, —(X b ) 0-1 —C(═O)N(H)R b , —(X b ) 0-1 —C(═O)N(R b )R b , —(X b ) 0-1 —N(H)C(═O)R b , —(X b ) 0-1 —N(R b )C(═O)R b , —(X b ) 0-1 —N(H)C(═O)OR b and —(X b ) 0-1 —N(R b )C(═O)OR b , wherein X b is selected from the group consisting of C 1-6 alkylene, C 2-6 alkenylene, C 2-6 alkynylene, C 1-6 heteroalkylene, C 3-6 cycloalkylene and C 3-6 heterocycloalkylene, and R b at each occurrence is independently selected from the group consisting of C 1-6 alkyl, C 1-6 haloalkyl, C 1-6 heteroalkyl, C 2-6 alkenyl, C 2-6 alkynyl, 3-7 membered cycloalkyl and 3-7 membered heterocycloalkyl;

R 4 is -(L) 0-1 —R x4a , wherein L is selected from the group consisting of —O—, —N(H)—, —C(═O)—, C 1-4 alkylene, C 1-4 haloalkylene, C 2-4 alkenylene, C 2-4 alkynylene and C 1-4 heteroalkylene and R x4a is selected from the group consisting of hydrogen, C 1-6 alkyl, C 1-6 haloalkyl, C 2-6 alkenyl, C 2-6 alkynyl and C 1-6 heteroalkyl, 3-6 membered cycloalkyl, 3-9 membered heterocycloalkyl, 6-10 membered aryl and 5-10 membered heteroaryl, wherein the aliphatic or aromatic portions of R 4 are independently substituted with 0 to 5 R R4 substituents selected from the group consisting of C 1-6 alkyl, C 1-6 haloalkyl, C 1-6 heteroalkyl, C 1-6 alkoxy, C 1-6 alkylamino, C 1-6 dialkylamino, C 3-6 heterocycloalkyl, F, Cl, Br, I, —OH, —NH 2 , —SH, —CF 3 , —OCF 3 , —SF 5 , —(X c ) 0-1 —CN, —(X c ) 0-1 —NO 2 , —(X c ) 0-1 —N 3 , —(X c )—OH, —(X c ) 0-1 —OR c , —(X c )—H, —(X c ) 0-1 —R c , —(X c ) 0-1 —N(H)R c , —(X c ) 0-1 —N(R c ) 2 , —(X c ) 0-1 —SR c , —(X c ) 0-1 —C(O)R c , —(X c ) 0-1 —S(O) 2 R c , —(X c ) 0-1 —S(O)R c , —(X c ) 0-1 —N(H)S(O) 2 R c , —(X c ) 0-1 —N(R c )S(O) 2 R c , —(X c ) 0-1 —C(═O)OR c , —(X c ) 0-1 —C(═O)OH, —(X c ) 0-1 —C(═O)N(H)R c , —(X c ) 0-1 —C(═O)N(R c )R c , —(X c ) 0-1 —N(H)C(═O)R c , —(X c ) 0-1 —N(R c )C(═O)R c , wherein X c is selected from the group consisting of C 1-6 alkylene, C 2-6 alkenylene, C 2-6 alkynylene, C 1-6 heteroalkylene, C 3-6 cycloalkylene and C 3-6 heterocycloalkylene, and R c at each occurrence is independently selected from the group consisting of C 1-6 alkyl, C 1-6 haloalkyl, C 1-6 heteroalkyl, C 2-6 alkenyl, C 2-6 alkynyl, 3-7 membered cycloalkyl, 3-7 membered heterocycloalkyl, phenyl and 5-6 membered heteroaryl, wherein any two R c groups attached to the same nitrogen atom are optionally combined to form a 3-7 membered heterocycloalkyl or 5-10 membered heteroaryl comprising 1-3 heteroatoms selected from N, O and S.

2. The compound of claim 1 , wherein R 3 is substituted with —NR x3a R x3b , wherein and R x3a and R x3b are optionally substituted with 1 to 5 R R3 substituents.

3. The compound of claim 1 , wherein A is selected from the group consisting of

4. The compound of claim 1 , wherein R 3 is selected from the group consisting of pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, purinyl, pyrrolopyrimidinyl, triazolopyrimidinyl, pyrazolopyrimidinyl, pyrrolopyrazinyl, pyrazolopyrazinyl, triazolopyrazinyl, imidazolopyrazinyl, pyrrolopyridazinyl, pyrazoloyridazinyl, triazoloyridazinyl, imidazoloyridazinyl, furopyrimidinyl, thienopyrimidinyl, oxazolopyrimidinyl, thiazolopyrimidinyl, pyrrolyl, imidazolyl, pyrazolyl, oxazolyl, isoxazolyl, oxadiazolyl, thiazolyl, isothiazolyl and thiadiazolyl, wherein R 3 is substituted with —NR x3a R x3b , wherein R 3 and the R x3a and R x3b group are each independently further optionally substituted with 1 to 5 R R3 substituents.

5. The compound of claim 4 , wherein R 3 is selected from the group consisting of pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, pyrrolyl, imidazolyl, pyrazolyl, isoxazolyl, oxadiazolyl, thiazolyl, isothiazolyl and thiadiazolyl and wherein R 3 is substituted with —NR x3a R x3b , wherein R 3 and the R x3a and R x3b group are further each independently optionally substituted with 1 to 3 R R3 substituents.

6. The compound of claim 5 , wherein R x3a and R x3b is each independently selected from the group consisting of hydrogen, C 1-6 alkyl, C 1-6 haloalkyl, C 2-6 alkenyl, C 2-6 alkynyl, C 1-6 alkoxy, C 1-6 heteroalkyl, 6-10 membered aryl and 5-10 membered heteroaryl, wherein at least one of R x3a and R x3b is hydrogen.

7. The compound of claim 6 , wherein R x3a and R x3b is each independently selected from the group consisting of hydrogen, methyl, ethyl, propyl, isopropyl, phenyl and pyridyl, and wherein at least one of R x3a and R x3b is hydrogen.

8. The compound of claim 7 , wherein R x3a and R x3b are each hydrogen.

9. The compound of claim 5 , wherein R R3 is selected from the group consisting F, Cl, Br, I, —OH, —NH 2 , —CF 3 , —OCF 3 , —OCH 3 , —NO 2 , —X b —NO 2 , —X b —OH, —X b —H, —X b —OR b , —OR b , —X b —N(H)R b , —N(H)R b , —X b —N(H) 2 , —X b —N(R b ) 2 , —N(R b ) 2 , —C(═O)N(H)R b , —X b —C(═O)N(H)R b , —C(═O)N(R b )R b , —X b —C(═O)N(R b )R b , —X b —N(H)C(═O)R b , —X b —N(H)C(═O)R b , —X b —N(R b )C(═O)R b and —N(R b )C(═O)R b , wherein X b is selected from the group consisting of C 1-6 alkylene, C 2-6 alkenylene, C 2-6 alkynylene, and C 1-6 heteroalkylene, and R b at each occurrence is independently selected from the group consisting of C 1-6 alkyl, C 1-6 haloalkyl, C 1-6 heteroalkyl, C 2-6 alkenyl, C 2-6 alkynyl, 3-7 membered cycloalkyl and 3-7 membered heterocycloalkyl.

10. The compound of claim 9 , wherein R R3 is selected from the group consisting of F, Cl, Br, I, —OH, —NH 2 , —CF 3 , —OCF 3 , —OCH 3 , —NO 2 , —X b —H, —OR b , —N(H)R b , —N(R b ) 2 , —C(═O)N(H)R b and —C(═O)N(R b )R b .

11. The compound of claim 10 , wherein R R3 is selected from the group consisting of F, Cl, Br, I, —OH, —NH 2 , —CF 3 , —OCF 3 , —OCH 3 , —NO 2 , —C(═O)N(CH 3 ) 2 and 3 methyloxetan-3-yl-(C═O)N(H)—.

12. The compound of claim 1 , wherein R 4 is -(L) 0-1 —R x4a , wherein L is selected from the group consisting of —O—, —N(H)—, —C(═O)—, C 1-6 alkylene, C 1-6 haloalkylene and C 1-6 heteroalkylene, R x4a is selected from the group consisting of hydrogen, 3-6 membered cycloalkyl, 3-9 membered heterocycloalkyl and 5-6 membered heteroaryl, wherein the aliphatic and/or aromatic portions of R 4 are independently optionally substituted with 1 to 5 R R4 substituents.

13. The compound of claim 12 , wherein R 4 is -(L) 0-1 —R x4a , wherein L is selected from the group consisting of —O—, —N(H)—, —C(═O)—, C 1-6 alkylene, C 1-6 haloalkylene and C 1-6 heteroalkylene, R x4a is selected from the group consisting of hydrogen, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, aziridinyl, oxetanyl, tetrahydropyranyl, tetrahydrothiopyranyl, tetrahydrofuranyl, tetrahydromorpholinyl, piperidinyl, piperazinyl, thiomorpholino and pyrrolidinyl, wherein the aliphatic and/or aromatic portions of R 4 are independently optionally substituted with 1 to 5 R R4 substituents.

14. The compound of claim 13 , wherein R 4 is selected from the group consisting of hydrogen, —C(═O)N(CH 3 ) 2 , —(CH 2 )N(CH 3 ) 2 , —(CH 2 )N(CH 3 ) 2 , morpholin-4-yl-(CH 2 )—, cyclopropylmethyl, trifluoromethylethyl, —CH 2 CH 2 OCH 3 , —OCH 2 CH 3 , methyl, ethyl, morpholin-4-yl-C(═O)—, pyrrolidin-1-yl-C(═O)—, CH 3 OCH 2 —, ethoxy and cyclopropyl.

15. The compound of claim 1 , wherein R 1 is C 1-2 alkyl or C 1-2 haloalkyl; R 2 is C 1-6 alkyl, C 1-6 haloalkyl, 3-8 membered cycloalkyl, phenyl and 5-6 membered heteroaryl; or alternatively R 1 and R 2 are combined to form a 3-6 membered cycloalkyl or 3-6 membered heterocycloalkyl; and wherein the aliphatic and/or aromatic portions of R 1 and R 2 either independently or when combined, are optionally substituted with 1 to 5 R R1/2 substituents.

16. The compound of claim 15 , wherein R 2 is selected from the group consisting of C 1-6 alkyl, C 1-6 haloalkyl, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, oxetanyl, tetrahydrofuranyl, tetrahydropyranyl, thiazolyl, oxadiazolyl, triazolyl, tetrazolyl, oxazolyl, pyrazolyl, pyrimidinyl, pyrazinyl and pyrrolyl; or alternatively R 2 and R 1 are combined to form 3-6 membered ring selected from the group consisting of cyclobutyl, cyclopentyl, cyclohexyl oxetanyl, tetrahydrofuranyl and tetrahydropyranyl, azetidinyl, pyrrolidinyl and piperidinyl, wherein the aliphatic and/or aromatic portions of R 1 and R 2 either independently or when combined, are optionally substituted with 1 to 5 R R1/2 substituents.

17. The compound of claim 1 , wherein formula I has a subformula selected from the group consisting of

18. The compound of claim 1 , wherein R 1 is C 1-2 alkyl, C 1-2 haloalkyl or CH 2 —OH; R 2 is C 1-6 alkyl, C 1-6 haloalkyl, 3-8 membered cycloalkyl, phenyl and 5-6 membered heteroaryl; or alternatively R 1 and R 2 are combined to form a 3-6 membered cycloalkyl or 3-6 membered heterocycloalkyl; and wherein the aliphatic and/or aromatic portions of R 1 and R 2 either independently or when combined, are optionally substituted with 1 to 5 R R1/2 substituents; A is

wherein R 3 is selected from the group consisting of pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, triazinyl, purinyl, pyrrolopyrimidinyl, triazolopyrimidinyl, pyrazolopyrimidinyl, pyrrolopyrazinyl, pyrazolopyrazinyl, triazolopyrazinyl, imidazolopyrazinyl, pyrrolopyridazinyl, pyrazoloyridazinyl, triazoloyridazinyl, imidazoloyridazinyl, furopyrimidinyl, thienopyrimidinyl, oxazolopyrimidinyl, thiazolopyrimidinyl, pyrrolyl, imidazolyl, pyrazolyl, oxazolyl, isoxazolyl, oxadiazolyl, thiazolyl, isothiazolyl and thiadiazolyl, wherein R 3 is substituted with —NR x3a R x3b , wherein R 3 and the R x3a and R x3b group are each independently further optionally substituted with 1 to 5 R R3 substituents; R 4 is -(L) 0-1 —R x4a , wherein L is selected from the group consisting of —C(═O)—, C 1-6 alkylene, C 1-6 haloalkylene and C 1-6 heteroalkylene, R x4a is selected from the group consisting of hydrogen, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, aziridinyl, oxetanyl, tetrahydropyranyl, tetrahydrothiopyranyl, tetrahydrofuranyl, morpholinyl, piperidinyl, piperazinyl, thiomorpholino and pyrrolidinyl, wherein the aliphatic and/or aromatic portions of R 4 are independently optionally substituted with 1 to 5 R R4 substituents; R 5 is selected from the group consisting of hydrogen, C 1-4 alkyl, C 1-4 haloalkyl, halogen, —OC 1-6 alkyl and 3-6 membered heterocycloalkyl-C 1-3 alkyleneoxy.

19. The compound of claim 1 , selected from the group consisting of: 4-(1-(2-aminopyrimidin-4-yl)-1H-benzo[d]imidazol-5-yl)-2-(thiazol-2-yl)but-3-yn-2-ol; 4-(1-(2-aminopyrimidin-4-yl)-1H-benzo[d]imidazol-6-yl)-2-(thiazol-2-yl)but-3-yn-2-ol; 4-(1-(2-aminopyrimidin-4-yl)-1H-benzo[d]imidazol-6-yl)-2-(thiazol-2-yl)but-3-yn-2-ol; 4-(1-(2-aminopyrimidin-4-yl)-1H-benzo[d]imidazol-6-yl)-2-methylbut-3-yn-2-ol; 4-(1-(2-aminopyrimidin-4-yl)-2-methyl-1H-benzo[d]imidazol-6-yl)-2-(thiazol-2-yl)but-3-yn-2-ol; 4-(1-(2-aminopyrimidin-4-yl)-2-cyclopropyl-1H-benzo[d]imidazol-6-yl)-2-(thiazol-2-yl)but-3-yn-2-ol; N-(2-amino-4-(6-(3-hydroxy-3-(thiazol-2-yl)but-1-ynyl)-1H-indazol-1-yl)pyrimidin-5-yl)-3-methyloxetane-3-carboxamide; 4-(1-(2-aminopyrimidin-4-yl)-2-cyclopropyl-1H-benzo[d]imidazol-6-yl)-2-methylbut-3-yn-2-ol; 1-(2-aminopyrimidin-4-yl)-6-(3-hydroxy-3-methylbut-1-ynyl)-1H-benzo[d]imidazol-2(3H)-one; 1-(2-aminopyrimidin-4-yl)-6-(3-hydroxy-3-(thiazol-2-yl)but-1-ynyl)-1H-benzo[d]imidazol-2(3H)-one; 4-(1-(2-aminopyrimidin-4-yl)-1H-benzo[d]imidazol-6-yl)-2-(oxazol-2-yl)but-3-yn-2-ol; 4-(1-(2-aminopyrimidin-4-yl)-1H-benzo[d]imidazol-6-yl)-1,1-difluoro-2-methylbut-3-yn-2-ol; 4-(1-(2-aminopyrimidin-4-yl)-1H-benzo[d]imidazol-6-yl)-1,1,1-trifluoro-2-methylbut-3-yn-2-ol; 4-(1-(2-aminopyrimidin-4-yl)-1H-benzo[d]imidazol-6-yl)-2-(5-methylisoxazol-3-yl)but-3-yn-2-ol; 4-(1-(2-aminopyrimidin-4-yl)-1H-benzo[d]imidazol-6-yl)-2-(1H-pyrazol-4-yl)but-3-yn-2-ol; 4-(1-(2-aminopyrimidin-4-yl)-1H-benzo[d]imidazol-6-yl)-2-cyclopropylbut-3-yn-2-ol; 4-(1-(2-aminopyrimidin-4-yl)-1H-benzo[d]imidazol-6-yl)-1-fluoro-2-methylbut-3-yn-2-ol; 4-(1-(2-aminopyrimidin-4-yl)-2-ethoxy-1H-benzo[d]imidazol-6-yl)-2-methylbut-3-yn-2-ol; 4-(1-(2-aminopyrimidin-4-yl)-5-fluoro-1H-benzo[d]imidazol-6-yl)-2-(thiazol-2-yl)but-3-yn-2-ol; 4-(1-(2-aminopyrimidin-4-yl)-5-fluoro-1H-benzo[d]imidazol-6-yl)-2-methylbut-3-yn-2-ol; 4-(1-(2-aminopyrimidin-4-yl)-1H-benzo[d]imidazol-6-yl)-2-(3-methylisoxazol-5-yl)but-3-yn-2-ol; 1 (2 aminopyrimidin-4-yl)-6-(3-hydroxy-3-(oxazol-2-yl)but-1-ynyl)-N,N-dimethyl-1H-indazole-3-carboxamide; 4-(1-(2-aminopyrimidin-4-yl)-1H-benzo[d]imidazol-6-yl)-2-(oxazol-2-yl)but-3-yn-2-ol; 4-(1-(2-aminopyrimidin-4-yl)-1H-benzo[d]imidazol-6-yl)-2-(oxazol-2-yl)but-3-yn-2-ol; 4-(1-(4-aminopyrimidin-2-yl)-1H-benzo[d]imidazol-6-yl)-2-(thiazol-2-yl)but-3-yn-2-ol; 4-(1-(4-amino-1,3,5-triazin-2-yl)-2-methyl-1H-benzo[d]imidazol-6-yl)-2-(thiazol-2-yl)but-3-yn-2-ol; 4-(1-(4-amino-1,3,5-triazin-2-yl)-2-cyclopropyl-1H-benzo[d]imidazol-6-yl)-2-(5-methylisoxazol-3-yl)but-3-yn-2-ol; (R)-4-(1-(4-amino-1,3,5-triazin-2-yl)-2-cyclopropyl-1H-benzo[d]imidazol-6-yl)-2-(thiazol-2-yl)but-3-yn-2-ol; 4-(1-(4-amino-1,3,5-triazin-2-yl)-2-methyl-1H-benzo[d]imidazol-6-yl)-2-(5-methylisoxazol-3-yl)but-3-yn-2-ol; (R)-4-(1-(4-amino-1,3,5-triazin-2-yl)-2-(methoxymethyl)-1H-benzo[d]imidazol-6-yl)-2-(thiazol-2-yl)but-3-yn-2-ol; 4-(1-(2-aminopyrimidin-4-yl)-2-ethoxy-1H-benzo[d]imidazol-6-yl)-2-(5-methylisoxazol-3-yl)but-3-yn-2-ol; (2R)-4-[3-(4-amino-1,3,5-triazin-2-yl)-2-methyl-benzimidazol-5-yl]-2-thiazol-2-yl-but-3-yn-2-ol; (2R)-4-[3-(4-amino-1,3,5-triazin-2-yl)-2-methyl-benzimidazol-5-yl]-2-(5-methylisoxazol-3-yl)but-3-yn-2-ol; 4-[3-(2-aminopyrimidin-4-yl)-2-ethoxy-benzimidazol-5-yl]-2-(5-methylisoxazol-3-yl)but-3-yn-2-ol; 3-[1-(2-aminopyrimidin-4-yl)-6-[3-hydroxy-3-(5-methylisoxazol-3-yl)but-1-ynyl]benzimidazol-2-yl]oxypropane-1,2-diol; 4-[3-(2-aminopyrimidin-4-yl)-2-ethoxy-benzimidazol-5-yl]-2-[5-(hydroxymethyl)isoxazol-3-yl]but-3-yn-2-ol; (2R)-4-[3-(2-aminopyrimidin-4-yl)-2-(oxetan-3-yloxy)benzimidazol-5-yl]-2-(5-methylisoxazol-3-yl)but-3-yn-2-ol; 4-[3-(2-aminopyrimidin-4-yl)-2-(2-hydroxyethoxy)benzimidazol-5-yl]-2-(5-methylisoxazol-3-yl)but-3-yn-2-ol; 7-[2-[3-(2-aminopyrimidin-4-yl)-2-ethoxy-benzimidazol-5-yl]ethynyl]-5,6-dihydropyrrolo[1,2-a]imidazol-7-ol; 4-[3-(2-aminopyrimidin-4-yl)-2-(2,2,2-trifluoroethoxy)benzimidazol-5-yl]-2-(5-methylisoxazol-3-yl)but-3-yn-2-ol; 4-[3-(2-aminopyrimidin-4-yl)-2-tetrahydropyran-4-yloxy-benzimidazol-5-yl]-2-(5-methylisoxazol-3-yl)but-3-yn-2-ol; (2R)-4-[3-(2-aminopyrimidin-4-yl)-2-(2-methoxyethoxy)benzimidazol-5-yl]-2-(5-methylisoxazol-3-yl)but-3-yn-2-ol; 4-[3-(2-aminopyrimidin-4-yl)-2-(2,2,2-trifluoroethoxy)benzimidazol-5-yl]-2-pyrimidin-2-yl-but-3-yn-2-ol; (2R)-4-[3-(2-aminopyrimidin-4-yl)-2-(oxetan-3-yloxy)benzimidazol-5-yl]-2-(5-methyl-1,2,4-oxadiazol-3-yl)but-3-yn-2-ol; 4-[3-(2-aminopyrimidin-4-yl)-2-ethoxy-benzimidazol-5-yl]-2-pyrimidin-2-yl-but-3-yn-2-ol; (2R)-4-[3-(2-aminopyrimidin-4-yl)-2-(2-methoxyethoxy)benzimidazol-5-yl]-2-(5-methyl-1,2,4-oxadiazol-3-yl)but-3-yn-2-ol; 1-[3-[1-(2-aminopyrimidin-4-yl)-6-[3-hydroxy-3-(5-methylisoxazol-3-yl)but-1-ynyl]benzimidazol-2-yl]oxyazetidin-1-yl]ethanone; 4-[3-(2-aminopyrimidin-4-yl)-2-(2-methoxyethoxy)benzimidazol-5-yl]-2-pyrimidin-2-yl-but-3-yn-2-ol; 4-[3-(2-aminopyrimidin-4-yl)-2-(2-hydroxyethoxy)benzimidazol-5-yl]-2-pyrimidin-2-yl-but-3-yn-2-ol; 4-[3-(4-amino-1,3,5-triazin-2-yl)-2-methyl-benzimidazol-5-yl]-2-pyrimidin-2-yl-but-3-yn-2-ol; 4-[3-(2-aminopyrimidin-4-yl)-2-[(2,2-dimethyl-1,3-dioxolan-4-yl)methoxy]benzimidazol-5-yl]-2-(5-methylisoxazol-3-yl)but-3-yn-2-ol; 4-[3-(2-aminopyrimidin-4-yl)-2-(oxetan-3-yloxy)benzimidazol-5-yl]-2-pyrimidin-2-yl-but-3-yn-2-ol; 4-[3-(4-amino-1,3,5-triazin-2-yl)-2-methyl-benzimidazol-5-yl]-2-pyrazin-2-yl-but-3-yn-2-ol; 4-[3-(2-aminopyrimidin-4-yl)-2-(oxetan-3-yloxy)benzimidazol-5-yl]-2-methyl-but-3-yn-2-ol; 4-[3-(2-aminopyrimidin-4-yl)-2-[1-(2-hydroxyethyl)azetidin-3-yl]oxy-benzimidazol-5-yl]-2-(5-methylisoxazol-3-yl)but-3-yn-2-ol; 4-[3-(4-amino-1,3,5-triazin-2-yl)-2-methyl-benzimidazol-5-yl]-1-cyclopropyl-2-methyl-but-3-yn-2-ol; 4-[3-(4-amino-1,3,5-triazin-2-yl)-2-methyl-benzimidazol-5-yl]-2-methyl-but-3-yne-1,2-diol; [1-(2-aminopyrimidin-4-yl)-6-[3-hydroxy-3-(5-methylisoxazol-3-yl)but-1-ynyl]benzimidazol-2-yl]-pyrrolidin-1-yl-methanone; 1-[2-[3-(4-amino-1,3,5-triazin-2-yl)-2-methyl-benzimidazol-5-yl]ethynyl]cyclohexanol; [1-[2-[3-(4-amino-1,3,5-triazin-2-yl)-2-methyl-benzimidazol-5-yl]ethynyl]cyclopentyl]methanol; 4-[3-(2-aminopyrimidin-4-yl)-2-(2-hydroxyethoxy)benzimidazol-5-yl]-2-(5-fluoro-2-pyridyl)but-3-yn-2-ol; 3-[3-[3-(4-amino-1,3,5-triazin-2-yl)-2-methyl-benzimidazol-5-yl]-1-hydroxy-prop-2-ynyl]cyclobutanol; 2-[2-[3-(4-amino-1,3,5-triazin-2-yl)-2-methyl-benzimidazol-5-yl]ethynyl]norbornan-2-ol; 4-[3-(4-amino-1,3,5-triazin-2-yl)-2-methyl-benzimidazol-5-yl]-2-[4-(hydroxymethyl)thiazol-2-yl]but-3-yn-2-ol; 2-[2-[3-[3-(4-amino-1,3,5-triazin-2-yl)-2-methyl-benzimidazol-5-yl]-1-hydroxy-1-methyl-prop-2-ynyl]thiazol-4-yl]acetonitrile; 3-[2-[3-(4-amino-1,3,5-triazin-2-yl)-2-methyl-benzimidazol-5-yl]ethynyl]-3-hydroxy-cyclobutanecarbonitrile; 3-[2-[3-(4-amino-1,3,5-triazin-2-yl)-2-methyl-benzimidazol-5-yl]ethynyl]tetrahydropyran-3-ol; 1-[2-[3-(4-amino-1,3,5-triazin-2-yl)-2-methyl-benzimidazol-5-yl]ethynyl]-3-(hydroxymethyl)cyclobutanol; 3-[2-[3-(4-amino-1,3,5-triazin-2-yl)-2-methyl-benzimidazol-5-yl]ethynyl]oxetan-3-ol; 4-[3-(4-amino-1,3,5-triazin-2-yl)-2-methyl-benzimidazol-5-yl]-2,2-dimethyl-but-3-yn-1-ol; (2R)-4-[3-(2-aminopyrimidin-4-yl)-2-(2-fluoroethoxy)benzimidazol-5-yl]-2-(5-methyl-1,2,4-oxadiazol-3-yl)but-3-yn-2-ol; 4-[3-(2-aminopyrimidin-4-yl)-2-(2-hydroxyethoxy)benzimidazol-5-yl]-2-(5-chloro-2-pyridyl)but-3-yn-2-ol; 4-[3-(2-aminopyrimidin-4-yl)-2-(2-fluoroethoxy)benzimidazol-5-yl]-2-pyrimidin-2-yl-but-3-yn-2-ol; 4-[3-(4-amino-1,3,5-triazin-2-yl)-2-methyl-benzimidazol-5-yl]-2-methyl-1-pyrazol-1-yl-but-3-yn-2-ol; (2R)-4-[3-(2-aminopyrimidin-4-yl)-2-(2-methoxyethylamino)benzimidazol-5-yl]-2-(5-methylisoxazol-3-yl)but-3-yn-2-ol; 4-[3-(2-aminopyrimidin-4-yl)-2-(2-methoxyethylamino)benzimidazol-5-yl]-2-(4-methylthiazol-2-yl)but-3-yn-2-ol; and 4-[3-(2-aminopyrimidin-4-yl)-2-(2-hydroxyethoxy)benzimidazol-5-yl]-2-(5-chloro-2-pyridyl)but-3-yn-2-ol.

20. A pharmaceutical composition comprising a compound of claim 1 and at least one pharmaceutically acceptable carrier, diluent or excipient.

21. A method for the treatment of rheumatoid arthritis in a mammal, wherein said method comprises administering an effective amount to the mammal of a compound as defined in claim 1 .