WDR5 inhibitors and modulators

1. A compound of formula (I),

or a pharmaceutically acceptable salt thereof, wherein:

R 1 is hydrogen or C 1-4 alkyl;

R 2 is hydrogen, C 1-6 alkyl, C 3-8 cycloalkyl, or C 3-8 cycloalkyl-C 1-3 alkylene-;

X 1 is a bond;

R 3 is G 1 or -L 1 -G 2 ;

G 1 and G 2 are C 3-8 cycloalkyl, 4- to 8-membered heterocyclyl, aryl, or heteroaryl, wherein G 1 and G 2 are optionally substituted with 1-5 substituents independently selected from the group consisting of halogen, cyano, C 1-4 alkyl, C 1-4 haloalkyl, —O—C 1-4 alkyl, —O—C 1-4 haloalkyl, OH, oxo, —C(O)C 1-4 alkyl, —C(O)C 1-4 haloalkyl, —NH 2 , —NH(C 1-4 alkyl), —N(C 1-4 alkyl) 2 , —NHC(O)C 1-4 alkyl, and —N(C 1-4 alkyl)C(O)C 1-4 alkyl;

L 1 is —C 1-3 alkylene-;

R 4a , at each occurrence, is independently hydrogen, halogen, cyano, C 1-4 alkyl, C 1-4 haloalkyl, —O—C 1-4 alkyl, or OH;

R 4b , at each occurrence, is independently hydrogen, halogen, or C 1-4 alkyl; or R 4a and R 4b together with the carbon to which they are attached form a C 3-6 cycloalkyl;

n is 1 or 2;

X 2 is C(R 4a )(R 4b ) or N(R 5 );

R 5 is hydrogen, C 1-4 alkyl, C 1-4 haloalkyl, C 3-6 cycloalkyl, C 3-6 cycloalkyl-C 1-3 alkylene-, —C(O)C 1-4 alkyl, —C(O)C 3-6 cycloalkyl, or —C(O)OC 1-4 alkyl;

R 6a , R 6b , R 7a , R 7b , R 8a , and R 8b are each hydrogen; and

R 9 , R 10 , and R 11 are each hydrogen.

2. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein R 4a and R 4b are each hydrogen.

3. The compound of claim 2 , or a pharmaceutically acceptable salt thereof, wherein R 1 is hydrogen.

4. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein n is 1.

5. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein n is 2.

6. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein X 2 is CH 2 .

7. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein X 2 is NR 5 .

8. The compound of claim 7 , or a pharmaceutically acceptable salt thereof, wherein R 5 is —C(O)C 1-4 alkyl.

9. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein

R 2 is hydrogen or C 3-8 cycloalkyl-C 1-3 alkylene-;

G 1 is

a 4- to 8-membered heterocyclyl containing one heteroatom selected from nitrogen, oxygen, and sulfur;

phenyl; or

a 5- to 6-membered monocyclic heteroaryl; and

G 2 is phenyl;

wherein G 1 and G 2 are optionally substituted with 1-5 substituents independently selected from the group consisting of halogen, C 1-4 alkyl, C 1-4 haloalkyl, —O—C 1-4 alkyl, OH, —C(O)C 1-4 alkyl, —C(O)C 1-4 haloalkyl, and —NHC(O)C 1-4 alkyl.

10. The compound of claim 2 , or a pharmaceutically acceptable salt thereof, wherein

R 2 is hydrogen or C 3-8 cycloalkyl-C 1-3 alkylene-;

G 1 is

a 4- to 8-membered heterocyclyl containing one heteroatom selected from nitrogen, oxygen, and sulfur;

phenyl; or

a 5- to 6-membered monocyclic heteroaryl; and

G 2 is phenyl;

wherein G 1 and G 2 are optionally substituted with 1-5 substituents independently selected from the group consisting of halogen, C 1-4 alkyl, C 1-4 haloalkyl, —O—C 1-4 alkyl, OH, —C(O)C 1-4 alkyl, —C(O)C 1-4 haloalkyl, and —NHC(O)C 1-4 alkyl.

11. The compound of claim 1 , or a pharmaceutically acceptable salt thereof, wherein G 1 is 4- to 8-membered heterocyclyl, aryl, or heteroaryl; and G 2 is aryl; wherein G 1 and G 2 are optionally substituted with 1-5 substituents independently selected from the group consisting of halogen, C 1-4 alkyl, C 1-4 haloalkyl, —O—C 1-4 alkyl, OH, —C(O)C 1-4 alkyl, —C(O)C 1-4 haloalkyl, and —NHC(O)C 1-4 alkyl.

12. The compound of claim 11 , or a pharmaceutically acceptable thereof, wherein:

G 1 is:

a 4- to 8-membered heterocyclyl containing one heteroatom selected from nitrogen, oxygen, and sulfur;

phenyl; or

a 5- to 6-membered monocyclic heteroaryl; and

G 2 is phenyl;

wherein G 1 and G 2 are optionally substituted with 1-5 substituents independently selected from the group consisting of halogen, C 1-4 alkyl, C 1-4 haloalkyl, —O—C 1-4 alkyl, OH, —C(O)C 1-4 alkyl, —C(O)C 1-4 haloalkyl, and —NHC(O)C 1-4 alkyl.

13. The compound of claim 3 , or a pharmaceutically acceptable salt thereof, wherein

R 2 is hydrogen or C 3-8 cycloalkyl-C 1-3 alkylene-;

R g is halogen, C 1-4 alkyl, C 1-4 haloalkyl, —O—C 1-4 alkyl, OH, or —NHC(O)C 1-4 alkyl;

p is 1-3; and

q is 1-4.

14. The compound of claim 13 , or a pharmaceutically acceptable salt thereof, wherein R 3 is:

15. The compound of claim 13 , or a pharmaceutically acceptable salt thereof, wherein R 3 is:

16. The compound of claim 15 , having formula (I-a):

or a pharmaceutically acceptable salt thereof.

17. The compound of claim 1 , selected from the group consisting of

N-(cyclopropylmethyl)-N-(6-(6,7-dihydro-5H-pyrrolo[1,2-a]imidazol-2-yl)-2,3-dihydro-1H-inden-1-yl)-3-methoxybenzamide;

N-(6-(6,7-dihydro-5H-pyrrolo[1,2-a]imidazol-2-yl)-2,3-dihydro-1H-inden-1-yl)-4-methyl-3-(trifluoromethyl)benzamide;

N-(6-(6,7-dihydro-5H-pyrrolo[1,2-a]imidazol-2-yl)-2,3-dihydro-1H-inden-1-yl)-3-methoxy-4-methylbenzamide;

N-(6-(6,7-dihydro-5H-pyrrolo[1,2-a]imidazol-2-yl)-2,3-dihydro-1H-inden-1-yl)-3-ethoxybenzamide;

N-(6-(6,7-dihydro-5H-pyrrolo[1,2-a]imidazol-2-yl)-2,3-dihydro-1H-inden-1-yl)-3-methoxy-5-methylbenzamide;

2-(3,4-dichlorophenyl)-N-(6-(6,7-dihydro-5H-pyrrolo[1,2-a]imidazol-2-yl)-2,3-dihydro-1H-inden-1-yl)acetamide;

1-acetyl-N-(6-(6,7-dihydro-5H-pyrrolo[1,2-a]imidazol-2-yl)-2,3-dihydro-1H-inden-1-yl)piperidine-3-carboxamide;

N-(6-(6,7-dihydro-5H-pyrrolo[1,2-a]imidazol-2-yl)-2,3-dihydro-1H-inden-1-yl)-1-propionylpiperidine-3-carboxamide;

N-(6-(6,7-dihydro-5H-pyrrolo[1,2-a]imidazol-2-yl)-2,3-dihydro-1H-inden-1-yl)-1-(3,3,3-trifluoropropanoyl)piperidine-3-carboxamide;

N-(6-(6,7-dihydro-5H-pyrrolo[1,2-a]imidazol-2-yl)-2,3-dihydro-1H-inden-1-yl)-1-isobutyrylpiperidine-3-carboxamide;

(R)-2-(3,4-dichlorophenyl)-N-(6-(6,7-dihydro-5H-pyrrolo[1,2-a]imidazol-2-yl)-2,3-dihydro-1H-inden-1-yl)acetamide;

(R)—N-(6-(6,7-dihydro-5H-pyrrolo[1,2-a]imidazol-2-yl)-2,3-dihydro-1H-inden-1-yl)-3-methoxy-4-methylbenzamide;

1-acetyl-N—((R)-6-(6,7-dihydro-5H-pyrrolo[1,2-a]imidazol-2-yl)-2,3-dihydro-1H-inden-1-yl)piperidine-3-carboxamide;

(R)—N-(7-(6,7-dihydro-5H-pyrrolo[1,2-a]imidazol-2-yl)-1,2,3,4-tetrahydronaphthalen-1-yl)-3-methoxy-4-methylbenzamide;

(R)-2-(4-chloro-3-fluorophenyl)-N-(6-(6,7-dihydro-5H-pyrrolo[1,2-a]imidazol-2-yl)-2,3-dihydro-1H-inden-1-yl)acetamide;

N—((R)-6-(6,7-dihydro-5H-pyrrolo[1,2-a]imidazol-2-yl)-2,3-dihydro-1H-inden-1-yl)-1-propionylpiperidine-3-carboxamide;

1-acetyl-N—((R)-7-(6,7-dihydro-5H-pyrrolo[1,2-a]imidazol-2-yl)-1,2,3,4-tetrahydronaphthalen-1-yl)piperidine-3-carboxamide;

N—((R)-7-(6,7-dihydro-5H-pyrrolo[1,2-a]imidazol-2-yl)-1,2,3,4-tetrahydronaphthalen-1-yl)-1-propionylpiperidine-3-carboxamide;

(R)—N-(6-(6,7-dihydro-5H-pyrrolo[1,2-a]imidazol-2-yl)-2,3-dihydro-1H-inden-1-yl)-6-methoxynicotinamide;

(R)-2-chloro-N-(6-(6,7-dihydro-5H-pyrrolo[1,2-a]imidazol-2-yl)-2,3-dihydro-1H-inden-1-yl)isonicotinamide;

(R)-2-chloro-N-(6-(6,7-dihydro-5H-pyrrolo[1,2-a]imidazol-2-yl)-2,3-dihydro-1H-inden-1-yl)-5-methylnicotinamide;

(R)—N-(6-(6,7-dihydro-5H-pyrrolo[1,2-a]imidazol-2-yl)-2,3-dihydro-1H-inden-1-yl)-6-methyl-2-oxo-1,2-dihydropyridine-4-carboxamide;

(R)-6-chloro-N-(6-(6,7-dihydro-5H-pyrrolo[1,2-a]imidazol-2-yl)-2,3-dihydro-1H-inden-1-yl)-4-methylpicolinamide;

(R)—N-(6-(6,7-dihydro-5H-pyrrolo[1,2-a]imidazol-2-yl)-2,3-dihydro-1H-inden-1-yl)-2-methylisonicotinamide;

(R)—N-(6-(6,7-dihydro-5H-pyrrolo[1,2-a]imidazol-2-yl)-2,3-dihydro-1H-inden-1-yl)-3-hydroxy-4-methylbenzamide;

(R)—N-(6-(6,7-dihydro-5H-pyrrolo[1,2-a]imidazol-2-yl)-2,3-dihydro-1H-inden-1-yl)-5-methoxynicotinamide;

(R)-3-acetamido-N-(6-(6,7-dihydro-5H-pyrrolo[1,2-a]imidazol-2-yl)-2,3-dihydro-1H-inden-1-yl)-4-methylbenzamide;

(R)-2-chloro-N-(6-(6,7-dihydro-5H-pyrrolo[1,2-a]imidazol-2-yl)-2,3-dihydro-1H-inden-1-yl)-6-methylnicotinamide;

(R)—N-(6-(6,7-dihydro-5H-pyrrolo[1,2-a]imidazol-2-yl)-2,3-dihydro-1H-inden-1-yl)-3,5-dimethoxy-4-methylbenzamide;

(R)—N-(6-(6,7-dihydro-5H-pyrrolo[1,2-a]imidazol-2-yl)-2,3-dihydro-1H-inden-1-yl)-3-fluoroisonicotinamide;

(R)—N-(6-(6,7-dihydro-5H-pyrrolo[1,2-a]imidazol-2-yl)-2,3-dihydro-1H-inden-1-yl)-6-oxo-1,6-dihydropyridine-3-carboxamide;

(R)—N-(6-(6,7-dihydro-5H-pyrrolo[1,2-a]imidazol-2-yl)-2,3-dihydro-1H-inden-1-yl)-5-fluoronicotinamide; and

(R)—N-(1-acetyl-6-(6,7-dihydro-5H-pyrrolo[1,2-a]imidazol-2-yl)-1,2,3,4-tetrahydroquinolin-4-yl)-3-methoxy-4-methylbenzamide,

or a pharmaceutically acceptable salt thereof.

18. A pharmaceutical composition comprising the compound of claim 1 , or a pharmaceutically acceptable salt thereof, and a pharmaceutically acceptable carrier.

19. A method of inhibiting the binding of mixed lineage leukemia 1 (MLL1) to WD40 repeat protein 5 (WDR5) in a patient with cancer comprising administering to the subject, a therapeutically effective amount of the compound of claim 1 , or a pharmaceutically acceptable salt thereof.

20. The method of claim 19 , wherein the cancer is selected from the group consisting of leukemia, ovarian cancer, breast cancer, colorectal cancer, pancreatic cancer, gastric cancer, stomach cancer, lung cancer, cervical cancer, uterine cancer, cancers of the blood, and cancers of the lymphatic system.