IP Library Patent Application 17319224
Patent Application
App. No. 17/319,224

ECTONUCLEOTIDASE INHIBITORS AND METHODS OF USE THEREOF

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Patent No.
US None
App. No.
17/319,224
Abstract

The invention relates to novel heterocyclic compounds and pharmaceutical preparations thereof. The invention further relates to methods of treating or preventing cancer using the novel heterocyclic compounds of the invention.

Claims (316)

1 . A compound of formula (I):

or a pharmaceutically acceptable salt and/or prodrug thereof, wherein

X is O, NR 7 or CR 7 R 8 ;

Y is O or S;

Z is NR 19 , O or S;

Het is heterocyclyl or heteroaryl;

R 1a is selected from H, halo, hydroxy, cyano, azido, amino, C 1-6 alkyl, hydroxyC 1-6 alkyl, amino-C 1-6 alkyl, —O—C(O)—O—C 1-6 alkyl, C 1-6 acyloxy, C 1-6 alkoxy, C 2-6 alkenyl, and C 2-6 alkynyl; and

R 1b is selected from H, halo, C 1-6 alkyl, hydroxy-C 1-6 alkyl, amino-C 1-6 alkyl, C 2-6 alkenyl, and C 2-6 alkynyl; or

R 1a and R 1b , together with the carbon atom to which they are attached, form a C═CH 2 or C═C(H)C 1-6 alkyl;

R 2a is selected from H, halo, hydroxy, cyano, azido, amino, C 1-6 alkyl, hydroxy-C 1-6 alkyl, amino-C 1-6 alkyl, C 1-6 acyloxy, —O—C(O)—O—C 1-6 alkyl, C 1-6 alkoxy, C 2-6 alkenyl, and C 2-6 alkynyl;

R 2b is selected from H, halo, C 1-6 alkyl, hydroxy-C 1-6 alkyl, amino-C 1-6 alkyl, C 2-6 alkenyl, and C 2-6 alkynyl; or

R 2a and R 2b , together with the carbon atom to which they are attached, form a C═CH 2 or C═C(H)C 1-6 alkyl;

R 3 is selected from H, alkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl, heteroaralkyl, and —(CH 2 )—C(O)OR 9 ;

R 4 is selected from heteroaryl, alkyl, —C(O)OR 9 , —C(O)NR 11 R 12 , —S(O) 2 R 10 , —P(O(OR 11 )(OR 12 ), and —P(O(OR 11 )(NR 13 R 15 );

R 5 is selected from H, cyano, alkyl, cycloalkylalkyl, heterocyclylalkyl, aralkyl, heteroaralkyl, and —C(O)OR 9 ;

R 6 is selected from —C(O)OR 9 and —P(O)(OR 11 )(OR 12 );

each R 7 and R 8 is H

R 9 is independently selected from H, alkyl, acyloxyalkyl, alkenyl, alkynyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl, and heteroaralkyl, and —(CHR 13 ) m —Z—C(O)—R 14 ;

each R 10 is independently selected from alkyl, alkenyl, alkynyl, amino, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl, and heteroaralkyl; and

each R 11 and R 12 is independently selected from H, alkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl, heteroaralkyl and —(CHR 13 ) m —Z—C(O)—R 14 ; or

R 11 and R 12 , together with the atoms to which they are attached, form a 5- to 7-membered heterocyclyl; and

each R 13 is independently H or alkyl;

each R 14 is independently selected from alkyl, aminoalkyl, heterocyclyl, and heterocyclylalkyl;

R 15 is selected from alkyl, aralkyl, —C(R 16 )(R 17 )—C(O)O—R 18 ;

each R 16 and R 17 are selected from H, alkyl, amino-alkyl, hydroxy-alkyl, mercapto-alkyl, sulfonyl-alkyl, cycloalkyl, aryl, aralkyl, heterocyclylalkyl, heteroaralkyl, and —(CH 2 )C(O)OR 9 ;

R 18 is selected from H, alkyl, alkoxyalkyl, aminoalkyl, haloalkyl, amido, cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl, aryl, aralkyl, heteroaryl, heteroaralkyl;

R 19 is H or alkyl, preferably H; and

m is 1 or 2;

provided that either R 4 is tetrazolyl, or R 5 is aralkyl or heteroaralkyl, or both.

2 .- 146 . (canceled)

147 . A compound selected from:

Cpd.

#

Compound

Name

6

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydro-furan- 2-yl)methoxy)-2-benzyl- malonic acid

7

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydro-furan- 2-yl)methoxy)-2-(4- carboxybenzyl)-malonic acid

8

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydro-furan- 2-yl)methoxy)-2-((6- chloropyridin-3-yl) methyl)malonic acid

10

2-(((2R,3R,4R,5R)-5-(6- amino-9H-purin-9-yl)-4- fluoro-3-hydroxytetra- hydrofuran-2-yl)methoxy)- 2-benzylmalonic acid

12

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-(4-(2- carboxyethyl)benzyl) malonic acid

13

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-(3- phenoxybenzyl)malonic acid

15

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-(3- (trifluoromethoxy) benzyl)malonic acid

16

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-(3- (trifluoromethyl)benzyl) malonic acid

17

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2- (naphthalen-2-ylmethyl) malonic acid

20

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-(4- (trifluoromethyl)benzyl) malonic acid

21

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-(4- (methylsulfonyl)benzyl) malonic acid

22

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-(3- (dimethylcarbamoyl) benzyl)malonic acid

23

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2- (thiophen-3-ylmethyl) malonic acid

25

diethyl 2-(((2R,3R,4S,5R)- 5-(6-amino-chloro-9H- purin-9-yl)-4-fluoro-3- (isobutyryloxy)tetrahydro- furan-2-yl)methoxy)-2-(4- (trifluoromethoxy)benzyl) malonate

27

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-(3- aminobenzyl)malonic acid

28

2-benzyl-2- (((2R,3R,4S,5R)-5-(6- (benzylamino)-2- chloro-9H-purin-9-yl)- 4-fluoro-3-hydroxytetra- hydrofuran-2-yl) methoxy)malonic acid

32

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-((6- (trifluoromethyl)pyridin- 3-yl)methyl)malonic acid

34

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-(4- cyanobenzyl)malonic acid

35

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-(3- cyanobenzyl)malonic acid

36

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-(4- (trifluoromethoxy)benzyl) malonic acid

37

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-3- ethoxy-3-oxo-2-(4- (trifluoromethoxy)benzyl) propanoic acid

38

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-3- ethoxy-3-oxo-2-(4- (trifluoromethoxy)benzyl) propanoic acid

39

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-(4- (hydroxymethyl)benzyl) malonic acid

40

2-(((2R,3R,4S,5R)-5-(6- amino-2-azido-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-(3- cyanobenzyl)malonic acid

41

2-(((2R,3R,4S,5R)-5-(2- azido-6-((tert-butoxy- carbonyl)amino)-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-(3- cyanobenzyl)malonic acid

42

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydro- furan-2-yl)methoxy)-2- (3-carboxybenzyl)- malonic acid

43

2-(3-(1H-tetrazol-5-yl) benzyl)-2- (((2R,3R,4S,5R)-5-(6- amino-2-azido-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)malonic acid

44

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-(3- fluorobenzyl)malonic acid

45

diethyl 2-(((2R,3R,4S,5R)- 5-(6-amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-(3- fluorobenzyl)malonate

46

diethyl 2-(((2R,3R,4S,5R)- 5-(6-amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-(4- fluorobenzyl)malonate

47

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-(4- fluorobenzyl)malonic acid

48

diethyl 2-(((2R,3R,4S,5R)- 5-(6-amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-(4- (trifluoromethoxy)benzyl) malonate

49

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-(3- methoxybenzyl)malonic acid

50

2-((1H-tetrazol-5-yl) methyl)-2- (((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)malonic acid

51

2-(((2S,3S,4R,5R)-3- amino-5-(6-amino-2- chloro-9H-purin- 9-yl)-4- hydroxytetrahydrofuran- 2-yl)methoxy)-2- benzylmalonic acid

53

2-(3-(1H-tetrazol-5-yl) benzyl)-2- (((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)malonic acid

54

2-(4-(1H-tetrazol-5-yl) benzyl)-2- (((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydro- furan-2-yl)methoxy) malonic acid

55

2-(((2R,3S,4R,5R)-4- amino-5-(6-amino-2- chloro-9H-purin-9-yl)-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2- benzylmalonic acid

56

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-(3- hydroxybenzyl)malonic acid

57

2-(((2R,3R,4S,5R)-5- (6-amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-(4- carboxy-2-fluorobenzyl) malonic acid

58

2-(((2R,3R,4S,5R)-5- (6-amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydro-furan- 2-yl)methoxy)-2-(4- carboxy-3-fluorobenzyl) malonic acid

59

2-(((2R,3R,4S,5R)-5- (6-amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydro-furan- 2-yl)methoxy)-2-((5- (trifluoromethyl)-furan- 2-yl)methyl)malonic acid

60

2-(((2R,3R,4S,5R)-5- (6-amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydro-furan- 2-yl)methoxy)-2-(3- fluoro-4-(trifluoromethyl) benzyl)malonic acid

61

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-((3- phenylisoxazol-5-yl) methyl)malonic acid

62

dimethyl 2- (((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-(4- (trifluoromethyl)benzyl) malonate

63

2-(((2R,3R,4S,5R)-5- (6-amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydro-furan- 2-yl)methoxy)-2-((1- benzyl-1H-pyrazol-4-yl) methyl)malonic acid

64

2-((1H-pyrazol-4-yl) methyl)-2- (((2R,3R,4S,5R)- 5-(6-amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)malonic acid

65

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-(4- (benzyloxy)benzyl) malonic acid

66

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-(4- hydroxybenzyl)malonic acid

67

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydro-furan- 2-yl)methoxy)-2-((2- carboxythiazol-5-yl) methyl)malonic acid

68

2-(((2R,3R,4S,5R)-5- (6-amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydro-furan- 2-yl)methoxy)-2-((2- carboxythiazol-4-yl) methyl)malonic acid

69

2-([1,1′-biphenyl]-4- ylmethyl)-2- (((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydro-furan- 2-yl)methoxy)-3-ethoxy- 3-oxopropanoic acid

70

diethyl 2-(((2R,3R,4S,5R)- 5-(6-amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-(4-(2- methoxy-2-oxoethyl) benzyl)malonate

71

diethyl 2-(((2R,3R,4S,5R)- 5-(6-amino-chloro-9H- purin-9-yl)-4-fluoro-3- (isobutyryloxy)tetrahydro- furan-2-yl)methoxy)-2- ((5-(methoxycarbonyl) thiophen-3-yl)methyl) malonate

72

diethyl 2-(((2R,3R,4S,5R)- 5-(6-amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran-2- yl)methoxy)-2-((5- (methoxycarbonyl)-1- methyl-1H-pyrazol-3-yl) methyl)malonate

73

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-((5- carboxy-1-methyl-1H- pyrazol-3-yl)methyl) malonic acid

74

2-benzyl-2- (((2R,3R,4S,5R)-5-(2- chloro-6-hydroxy-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)malonic acid

75

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-(4- cyano-3-fluorobenzyl) malonic acid

76

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydro-furan- 2-yl)methoxy)-2-((5- carboxythiophen-3-yl) methyl)malonic acid

77

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydro-furan- 2-yl)methoxy)-2-((5- carboxythiophen-2-yl) methyl)malonic acid

78

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-(4- (carboxymethyl)benzyl) malonic acid

79

2-([1,1′-biphenyl]-4- ylmethyl)-2- (((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydro-furan- 2-yl)methoxy)malonic acid

80

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-(4- chloro-2-fluorobenzyl) malonic acid

81

2-([1,1′-biphenyl]-4- ylmethyl)-2- (((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-3- methoxy-3-oxopropanoic acid

82

2-([1,1′-biphenyl]-4- ylmethyl)-2- (((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-3- methoxy-3-oxopropanoic acid

83

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-((3- carboxyisoxazol-5-yl) methyl)malonic acid

84

2-([1,1′-biphenyl]-4- ylmethyl)-2- (((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydro-furan- 2-yl)methoxy)-3-ethoxy- 3-oxopropanoic acid

85

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-(3- chloro-4-methoxybenzyl) malonic acid

86

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-(4- sulfamoylbenzyl)malonic acid

87

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydro-furan- 2-yl)methoxy)-2-(4-((2- carboxy-ethyl)carbamoyl) benzyl)malonic acid

88

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydro-furan- 2-yl)methoxy)-2-((2- carboxybenzofuran-5-yl) methyl)malonic acid

89

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-(4- (2,2,2-trifluoroethoxy) benzyl)malonic acid

90

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-(4- ((E)-2-carboxyvinyl) benzyl)malonic acid

91

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-(4- (methoxycarbonyl) benzyl)malonic acid

92

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-(4- (carboxymethoxy) benzyl)malonic acid

93

2-benzyl-2- (((2R,3R,4S,5R)-5-(2- chloro-6-oxo-1H-purin- 9(6H)-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)malonic acid

94

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-(4-(5- methyl-1,3,4-oxadiazol- 2-yl)benzyl)malonic acid

95

of 2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-((2′- cyano-[1,1′-biphenyl]- 4-yl)-methyl)malonic acid

96

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-((5- chlorobenzo[b]thiophen- 3-yl)methyl)-malonic acid

97

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-(benzo [d]thiazol-2-ylmethyl) malonic acid

98

2-(((2R,3R,4S,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-4-fluoro-3- hydroxytetrahydrofuran- 2-yl)methoxy)-2-(4- (methylcarbamoyl)benzyl) malonic acid

99

Diethyl 2- (((2R,3S,4R,5R)- 5-(6-amino-2-chloro-9H- purin-9-yl)-3,4- dihydroxytetrahydrofuran- 2-yl)methoxy)-2-benzyl malonate

100

2-(((2R,3S,4R,5R)-5-(6- amino-2-chloro-9H- purin-9-yl)-3,4- dihydroxytetrahydro- furan-2-yl)methoxy)-2- (4-carboxybenzyl) malonic acid

101

S)-2-(((2R,3S,4R,5R)- 5-(6-amino-2-chloro- 9H-purin-9-yl)-3,4- dihydroxytetrahydro- furan-2-yl)methoxy)- 2-(1H-tetrazol-5-yl) acetic acid

102

(R)-2-(((2R,3S,4R,5R)- 5-(6-amino-2-chloro- 9H-purin-9-yl)-3,4- dihydroxytetrahydro- furan-2-yl)methoxy)-2- (1H-tetrazol-5-yl)acetic acid

103

(S)-2-(((2R,3S,4R,5R)- 5-(6-amino-2-chloro- 9H-purin-9-yl)-3,4- dihydroxytetrahydro- furan-2-yl)methoxy)- 3-phenyl-2-(1H-tetrazol- 5-yl)propanoic acid

104

(R)-2-(((2R,3S,4R,5R)- 5-(6-amino-2-chloro- 9H-purin-9-yl)-3,4- dihydroxytetrahydro- furan-2-yl)methoxy)-3- phenyl-2-(1H-tetrazol- 5-yl)propanoic acid

105

(S)-2-(((2R,3S,4R,5R)- 5-(6-amino-2-methoxy- 9H-purin-9-yl)-3,4- dihydroxytetrahydro- furan-2-yl)methoxy)-3- phenyl-2-(1H-tetrazol- 5-yl)propanoic acid

106

(R)-2-(((2R,3S,4R,5R)- 5-(6-amino-2-methoxy- 9H-purin-9-yl)-3,4- dihydroxytetrahydro- furan-2-yl)methoxy)-3- phenyl-2-(1H-tetrazol- 5-yl)propanoic acid

Cpd. #

Compound

108

109

110

111

113

114

115

116

117

118

119

120

122

123

124

125

126

127

128

129

130

131

133

134

135

136

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

or a pharmaceutically acceptable salt thereof.

148 . A compound selected from:

or a pharmaceutically acceptable salt thereof.

149 . A pharmaceutical composition comprising the compound claim 1 , or a pharmaceutically acceptable salt thereof, and one or more pharmaceutically acceptable excipients.

150 . A method of inhibiting CD73 in a cell, comprising contacting the cell with a compound of formula (I), or a pharmaceutically acceptable salt thereof, according to claim 1 .

151 . The method of claim 150 , wherein contacting the cell occurs in a subject in need thereof, thereby treating a disease or disorder selected from cancer, cerebral and cardiac ischemic diseases, fibrosis, immune and inflammatory disorders, inflammatory gut motility disorder, neurological, neurodegenerative and CNS disorders and diseases, depression, Parkinson's disease, and sleep disorders.

152 . The method of claim 151 , wherein the cancer is selected from bladder cancer, bone cancer, brain cancer, breast cancer, cardiac cancer, cervical cancer, colon cancer, colorectal cancer, esophageal cancer, fibrosarcoma, gastric cancer, gastrointestinal cancer, head & neck cancer, Kaposi's sarcoma, kidney cancer, leukemia, liver cancer, lung cancer, lymphoma, melanoma, myeloma, ovarian cancer, pancreatic cancer, penile cancer, prostate cancer, testicular germcell cancer, thymoma and thymic carcinoma.

153 .- 158 . (canceled)

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 10, 2023
From: CALITHERA BIOSCIENCES, INC.
To: ANTENGENE THERAPEUTICS LIMITED
Reel/Frame 062319/0819 →