CD73 inhibitors

1. A method of treating cancer in a subject, comprising administering to the subject a compound of Formula (IV), or a pharmaceutically acceptable salt thereof:

wherein:

Ring A is

Q 2 is N or CW;

Q 3 is N and Q 4 is CW;

or Q 3 is CW and Q 4 is N;

each W is independently hydrogen, halogen, —CN, —OR b , NR c R d , C 1 -C 6 alkyl, or C 1 -C 6 haloalkyl;

A is —O— or —CH 2 —;

X is —O—, —S—, —S(═O) 2 —, —NR 17 —, or —C(R 18 ) 2 —;

R 1 and R 2 are independently hydrogen, C 1 -C 6 alkyl, C 1 -C 6 haloalkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, C 1 -C 6 alkyl(aryl), C 1 -C 6 alkyl(heteroaryl), C 1 -C 6 alkyl(cycloalkyl), or C 1 -C 6 alkyl(heterocycloalkyl); wherein each alkyl, Amyl, alkynyl, cycloalkyl, heterocycloalkyl, aryl, and heteroaryl is independently, optionally substituted with one, two, or three R 1a ;

or R 1 and R 2 are taken together with the nitrogen atom to which they are attached to form a heterocycloalkyl optionally substituted with one, two, or three R 1b ;

each R 1a and R 1b is independently oxo (when feasible), halogen, —CN, —OR b , —SR b , —S(═O)R a , —NO 2 , —NR c R d , —S(═O) 2 R a , —NR b S(═O) 2 R a , —S(═O) 2 NR c R d , —C(═O)OR b , —OC(═O)OR b ; —C(═O)NR c R d , —OC(═O)NR c R d , —NR b C(═O)NR c R d , —NR b C(═O)R a , —NR b C(═O)OR b , C 1 -C 6 alkyl, C 1 -C 6 fluoroalkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, C 1 -C 6 alkyl(aryl), C 1 -C 6 alkyl(heteroaryl), C 1 -C 6 alkyl(cycloalkyl), or C 1 -C 6 alkyl(heterocycloalkyl);

R 3 is hydrogen, halogen, —CN, —OR b , —SR b , —NR c R d , C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, C 1 -C 6 haloalkyl, C 1 -C 6 hydroxyalkyl, C 1 -C 6 heteroalkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, C 1 -C 6 alkyl(aryl), C 1 -C 6 alkyl(heteroaryl), C 1 -C 6 alkyl(cycloalkyl), or C 1 -C 6 alkyl(heterocycloalkyl); wherein each alkyl; alkenyl, alkynyl, cycloalkyl, heterocycloalkyl, aryl, and heteroaryl is independently optionally substituted with one, two; or three R 3a ;

each R 3a is independently oxo (when feasible), halogen, —CN, —OR b , —NR c R d , —C(═O)R a , —C(═O)OR b , —C(═O)NR c R d , C 1 -C 6 alkyl, C 1 -C 6 fluoroalkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, cycloalkyl, heterocycloalkyl, aryl, or heteroaryl,

R 4 and R 7 are independently hydrogen, halogen, —OR b , C 1 -C 6 alkyl, C 1 -C 6 haloalkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, cycloalkyl, heterocycloalkyl, aryl; or heteroaryl;

R 5 and R 6 are independently hydrogen, halogen, —OR b , C 1 -C 6 alkyl, C 1 -C 6 haloalkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, cycloalkyl, heterocycloalkyl, aryl, or heteroaryl;

R 8 is hydrogen, halogen, —OR b , —NR c R d , C 1 -C 6 alkyl, or C 1 -C 6 haloalkyl;

R 9 and R 10 are independently hydrogen, halogen, C 1 -C 6 alkyl, or C 1 -C 6 haloalkyl;

R 11 is hydrogen, halogen, —CN, —OR 13 , —SR 13 , —S(═O)R 14 , —NO 2 , —NR 15 R 16 , —S(═O) 2 R 14 , —NR 13 S(═O) 2 R 14 , —S(═O) 2 NR 15 R 16 , —C(═O)R 14 , —OC(═O)R 14 , —C(═O)OR 13 , —OC(═O)OR 13 , NR 13 C(═O)OR 13 , C 1 -C 6 alkyl, C 1 -C 6 haloalkyl, C 1 -C 6 hydroxyalkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, C 1 -C 6 heteroalkyl, cycloalkyl, heterocycloalkyl, aryl, or heteroaryl, wherein each alkyl, alkenyl, alkynyl, cycloalkyl, heterocycloalkyl, aryl, and heteroaryl is independently optionally substituted with one, two, or three R 11a ;

R 12 is halogen, —CN, —OR 13 , —SR 13 , —S(═O)R 14 , —NO 2 , —NR 15 R 16 , —S(═O) 2 R 14 , —NR 13 S(═) 2 R 14 , —S(═) 2 NR 15 R 16 , —C(═O)R 14 , —OC(═O)R 14 , —C(═O)OR 13 , —OC(═O)OR 13 , —C(═O)NR 15 R 16 , —OC(═O)NR 15 R 16 , —NR 13 C(═O)NR 15 R 16 , —NR 13 C(═O)R 14 , —NR 13 C(═O)OR 13 , C 1 -C 6 alkyl, C 1 -C 6 haloalkyl, C 1 -C 6 hydroxyalkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, C 1 -C 6 heteroalkyl, cycloalkyl, heterocycloalkyl, aryl, or heteroaryl; wherein each alkyl, alkenyl, alkynyl, cycloalkyl, heterocycloalkyl, aryl, and heteroaryl is independently optionally substituted with one, two, or three R 12a ;

or R 11 and R 12 are taken together to form a cycloalkyl or heterocycloalkyl each optionally substituted with one, two, or three R 11b ;

each R 11a , R 11b , and R 12a is independently oxo (when feasible), halogen, —CN, —OR 13 , —SR 13 , —S(═O)R 14 , —NO 2 , —NR 15 R 16 , —S(═O) 2 R 14 , —NR 13 S(═O) 2 R 14 , —S(═O) 2 NR 15 R 16 , —C(═O)R 14 , —OC(═O)R 14 , —C(═O)OR 13 , —OC(═O)OR 13 , —C(═O)NR 15 R 16 , —OC(═O)NR 15 R 16 , —NR 13 C(═O)NR 15 R 16 , —NR 13 C(═O)R 14 , —NR 13 C(═O)OR 13 , C 1 -C 6 alkyl, C 1 -C 6 haloalkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, C 1 -C 6 hydroxyalkyl, C 1 -C 6 heteroalkyl, cycloalkyl, heterocycloalkyl, aryl, or heteroaryl; wherein each alkyl, alkenyl, alkynyl, cycloalkyl, heterocycloalkyl, aryl, and heteroaryl is independently optionally substituted with one, two, or three R 11c ;

each R 11c is independently oxo (when feasible), halogen, —CN, —OR b , —SR b , —S(═O)R a , —NO 2 , —NR c R d , —S(═) 2 R a , —NR b S(═O) 2 R a , —S(═O) 2 NR c R d , —C(═O)R a , —OC(═O)R a , —C(═O)OR b , —OC(═O)OR b , —C(═O)NR c R d , —OC(═O)NR c R d , —NR b C(═O)NR c R d , —NR b C(═O)R a , —NR b C(═O)OR b , C 1 -C 6 alkyl, C 1 -C 6 haloalkyl, C 1 -C 6 hydroxyalkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, C 1 -C 6 alkyl(aryl), C 1 -C 6 alkyl(heteroaryl), C 1 -C 6 alkyl(cycloalkyl), or C 1 -C 6 alkyl(heterocycloalkyl);

each R 13 is independently hydrogen, C 1 -C 6 alkyl, C 1 -C 6 haloalkyl, C 2 -C 6 alkenyl, alkynyl, C 1 -C 6 heteroalkyl, cycloalkyl, heterocycloalkyl, aryl, or heteroaryl; wherein each alkyl alkenyl, alkynyl, cycloalkyl, heterocycloalkyl, aryl, and heteroaryl is independently optionally substituted with one, two, or three R 13a ;

each R 14 is independently C 1 -C 6 alkyl, C 1 -C 6 haloalkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, C 1 -C 6 heteroalkyl, cycloalkyl, heterocycloalkyl, aryl, or heteroaryl; wherein each alkyl, alkenyl, alkynyl, cycloalkyl, heterocycloalkyl, aryl, and heteroaryl is independently optionally substituted with one, two, or three R 14a ;

each R 15 and R 16 is independently hydrogen, C 1 -C 6 alkyl; C 1 -C 6 haloalkyl, alkenyl, C 2 -C 6 alkynyl, C 1 -C 6 heteroalkyl, cycloalkyl, heterocycloalkyl, aryl, or heteroaryl; wherein each alkyl, alkenyl, alkynyl, cycloalkyl, heterocycloalkyl, aryl, and heteroaryl is independently optionally substituted with one, two, or three R 15a ;

or R 15 and R 16 are taken together with the nitrogen atom to which they are attached to form a heterocycloalkyl optionally substituted with one, two, or three R 15b ;

each R 13a , R 14a , R 15a , and R 15b is independently oxo (when feasible), halogen, —CN, —OR b , —SR b , —S(═O)R a , —NO 2 , —NR c R d , —S(═O) 2 R a , —NHS(═O) 2 R a , —S(═O) 2 NR c R d , —C(═O)R a , —OC(═O)R a , —C(═O)OR b , —OC(═O)OR b , —C(═O)NR c R d , —OC( 50 O)NR c R d , —NR b C(═O)NR c R d , —NR b C(═O)R a , —NR b C(═O)OR b , C 1 -C 6 alkyl, C 1 -C 6 haloalkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl; C 1 -C 6 alkyl(aryl), C 1 -C 6 alkyl(heteroaryl), C 1 -C 6 alkyl(cycloalkyl), or C 1 -C 6 alkyl(heterocycloalkyl); wherein each alkyl, cycloalkyl, heterocycloalkyl, aryl, and heteroaryl is independently optionally substituted with one, two, or three oxo (when feasible), halogen, —CN, —OR b , —S(═O)R a , —NO 2 , —NR c R d ; —S(═O) 2 R a , —S(═O) 2 NR c R d , —C(═O)R a , —C(═O)OR b , —C(═O)NR c R d , C 1 -C 6 alkyl, C 1 -C 6 haloalkyl, C 2 -C 6 alkenyl, or C 2 -C 6 alkynyl;

R 17 is hydrogen, —CN, —OR b , —S(═O) 2 R a , —C(═O)R a , —C(═O)OR b ; —C(═O)NR a , C 1 -C 6 alkyl, C 1 -C 6 fluoroalkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, C 1 -C 6 alkyl(aryl), C 1 -C 6 alkyl(heteroaryl), C 1 -C 6 alkyl(cycloalkyl), or C 1 -C 6 alkyl(heterocycloalkyl);

each R 18 is independently hydrogen, halogen, —CN, —OR b , —SR b , —S(═O)R a , —NO 2 , —NR c R d , —S(═O) 2 R a , —NHS(═O) 2 R a , —S(═O) 2 NR c R d , —C(═O)R a , —OC(═O)R a , —C(═O)OR b , —OC(═O)OR b , —C(═O)NR c R d , —OC(═O)NR c R d , —NR b C(═O)NR c R d , —NR b C(═O)R a , —NR b C(═O)OR b , C 1 -C 6 alkyl, C 1 -C 6 haloalkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, C 1 -C 6 alkyl(aryl), C 1 -C 6 alkyl(heteroaryl), C 1 -C 6 alkyl(cycloalkyl), or C 1 -C 6 alkyl(heterocycloalkyl);

R 21 and R 22 are independently hydrogen, C 1 -C 20 alkyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, C 1 -C 6 alkyl(aryl), C 1 -C 6 alkyl(heteroaryl), C 1 -C 6 alkyl(cycloalkyl), C 1 -C 6 alkyl(heterocycloalkyl); wherein each alkyl, cycloalkyl, heterocycloalkyl, aryl, and heteroaryl is independently optionally substituted with one, two, or three R 21a ;

or R 21 and R 22 are taken together with the atoms to which they are attached to form a heterocycloalkyl optionally substituted with one, two, or three R 21b ;

each R 21a and R 21b is independently oxo (when feasible), halogen, —CN, —OR b , —SR b , —S(═O)R a , —NO 2 , —NR c R d , —S(═O) 2 R a , —NHS(═O) 2 R a , —S(═O) 2 NR c R d , —C(═O)R a , —OC(═O)R a , —C(═O)OR b , —OC(═O)OR b , —C(═O)NR c R d , —OC(═O)NR c R d , —NR b C(═O)NR c R d , —NR b C(═O)R a , —NR b C(═O)OR b , C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, cycloalkyl, heterocycloalkyl, aryl, heteroaryl, alkyl(aryl), C 1 -C 6 alkyl(heteroaryl), C 1 -C 6 alkyl(cycloalkyl), or C 1 -C 6 alkyl(heterocycloalkyl);

each R a is independently C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, C 1 -C 6 heteroalkyl, cycloalkyl, heterocycloalkyl, aryl, or heteroaryl; wherein the alkyl, alkenyl, alkynyl, heteroalkyl, cycloalkyl, heterocycloalkyl, aryl, and heteroaryl is independently optionally substituted with one, two, or three oxo (when feasible), halogen, —OH, C 1 -C 6 alkyl, or C 1 -C 6 haloalkyl;

each R b is independently hydrogen, C 1 -C 6 alkyl, C 2 -C 6 alkenyl, C 2 -C 6 alkynyl, C 1 -C 6 heteroalkyl, cycloalkyl, heterocycloalkyl, aryl, or heteroaryl; wherein the alkyl, alkenyl, alkynyl, heteroalkyl, cycloalkyl, heterocycloalkyl, aryl, and heteroaryl is independently optionally substituted with one, two, or three oxo (when feasible), halogen, —OH, C 1 -C 6 alkyl, or C 1 -C 6 haloalkyl; and

each R c and R d is independently hydrogen, C 1 -C 6 alkyl, C 2 -C 6 alkenyl, alkynyl, C 1 -C 6 heteroalkyl, cycloalkyl, heterocycloalkyl, aryl, or heteroaryl; wherein the alkyl, alkenyl, alkynyl, heteroalkyl, cycloalkyl, heterocycloalkyl, aryl, and heteroaryl is independently optionally substituted with one, two, or three oxo (when feasible), halogen, —OH, C 1 -C 6 alkyl, or C 1 -C 6 haloalkyl;

or R c and R d are taken together with the nitrogen atom to which they are attached to form a heterocycloalkyl optionally substituted with one, two, or three oxo, halogen, C 1 -C 6 or C 1 -C 6 haloalkyl; and wherein the cancer is selected from lung cancer, melanoma, breast cancer, ovarian cancer, colorectal cancer, gastric cancer, gallbladder cancer, prostate cancer, renal cancer, multiple myeloma, and lymphoma.

2. The method of claim 1 , wherein in the compound of Formula (IV), or a pharmaceutically acceptable salt thereof, Q 2 is CW.

3. The method of claim 1 , wherein in the compound of Formula (IV), or a pharmaceutically acceptable salt thereof, Q 2 is N.

4. The method of claim 1 , wherein in the compound of Formula (IV), or a pharmaceutically acceptable salt thereof, Q 3 is N and Q 4 is CW.

5. The method of claim 1 , wherein in the compound of Formula (IV), or a pharmaceutically acceptable salt thereof, Q 4 is N and Q 3 is CW.

6. The method of claim 1 , wherein in the compound of Formula (IV), or a pharmaceutically acceptable salt thereof, each W is independently hydrogen, halogen, or C 1 -C 6 alkyl.

7. The method of claim 1 , wherein in the compound of Formula (IV), or a pharmaceutically acceptable salt thereof, R 3 is halogen, —OR b , C 1 -C 6 alkyl, C 2 -C 6 alkynl, C 1 -C 6 haloalkyl, C 1 -C 6 hydroxyalkyl, or C 1 -C 6 heteroalkyl; wherein each alkyl and alkynyl is independently optionally substituted with one, two, or three R 3a .

8. The method of claim 1 , wherein in the compound of Formula (IV), or a pharmaceutically acceptable salt thereof, R 3 is halogen, —OR b , C 2 -C 6 alkynyl, or C 1 -C 6 hydroxyalkyl; wherein each alkyl and alkynyl is independently optionally substituted with one, two, or three R 3a .

9. The method of claim 1 , wherein in the compound of Formula (IV), or a pharmaceutically acceptable salt thereof, R 1 is C 1 -C 6 alkyl, C 1 -C 6 haloalkyl, cycloalkyl, heterocycloalkyl, C 1 -C 6 alkyl(aryl), C 1 -C 6 alkyl(heteroaryl), C 1 -C 6 alkyl(cycloalkyl), or C 1 -C 6 alkyl(heterocycloalkyl); wherein each alkyl, cycloalkyl, heterocycloalkyl, aryl, and heteroaryl is independently optionally substituted with one, two, or three R 1a .

10. The method of claim 9 , wherein in the compound of Formula (IV), or a pharmaceutically acceptable salt thereof, R 1 is C 1 -C 6 alkyl, cycloalkyl, C 1 -C 6 alkyl(aryl), or C 1 -C 6 alkyl(cycloalkyl); wherein each alkyl, cycloalkyl, and aryl is independently optionally substituted with one, two, or three R 1a .

11. The method of claim 1 , wherein in the compound of Formula (IV), or a pharmaceutically acceptable salt thereof, each R 1a is independently halogen or C 1 -C 6 alkyl.

12. The method of claim 1 , wherein in the compound of Formula (IV), or a pharmaceutically acceptable salt thereof, R 2 is hydrogen or C 1 -C 6 alkyl.

13. The method of claim 10 , wherein in the compound of Formula (IV), or a pharmaceutically acceptable salt thereof, R 2 is hydrogen.

14. The method of claim 1 , wherein in the compound of Formula (IV), or a pharmaceutically acceptable salt thereof, R 8 is hydrogen or C 1 -C 6 alkyl.

15. The method of claim 14 , wherein in the compound of Formula (IV), or a pharmaceutically acceptable salt thereof, R 8 is hydrogen.

16. The method of claim 1 , wherein in the compound of Formula (IV), or a pharmaceutically acceptable salt thereof, R 9 and R 10 are independently, hydrogen or C 1 -C 6 alkyl.

17. The method of claim 16 , wherein in the compound of Formula (IV), or a pharmaceutically acceptable salt thereof, R 9 and R 10 are hydrogen.

18. The method of claim 1 , wherein in the compound of Formula (IV), or a pharmaceutically acceptable salt thereof, A is —O—.

19. The method of claim 1 , wherein the cancer is multiple myeloma.