# US 12,178,821 B2 · Combination therapies for the treatment of cancer

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- Number: US 12,178,821 B2
- Document ID: US12178821B2
- Status: Granted
- Kind: B2
- Application number: 17/680,995
- Filed: 2022-02-25
- Published: 2022-10-20
- Granted: 2024-12-31
- Earliest claimed: 2021-04-08
- Assignees: Curis, Inc.
- Applicants: Curis, Inc.
- Inventors: Reinhard von Roemeling; Andrey Ugolkov; Robert Martell
- Web page: https://patentgrep.com/patent/US12178821B2

## CPC

- A61K 31/5377: not condensed and containing further heterocyclic rings, e.g. timolol
- A61K 31/416: condensed with carbocyclic ring systems, e.g. indazole
- A61K 31/5386: spiro-condensed or forming part of bridged ring systems
- A61K 31/635: having a heterocyclic ring, e.g. sulfadiazine
- A61K 31/706: containing six-membered rings with nitrogen as a ring hetero atom
- A61K 31/7068: having oxo groups directly attached to the pyrimidine ring, e.g. cytidine, cytidylic acid
- A61K 31/7072: having two oxo groups directly attached to the pyrimidine ring, e.g. uridine, uridylic acid, thymidine, zidovudine
- A61K 31/7076: containing purines, e.g. adenosine, adenylic acid
- A61K 45/06: Mixtures of active ingredients without chemical characterisation, e.g. antiphlogistics and cardiaca
- A61P 35/00: Antineoplastic agents
- A61K: PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES (devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms A61J3/00; chemical aspects of, or use of materials for deodorisation of air, for disinfection or sterilisation, or for bandages, dressings, absorbent pads or surgical articles A61L; soap compositions C11D)
- A61P: SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS

## Abstract

The present disclosure relates to methods of treating certain diseases and disorders (e.g., cancer) with a combination of an IRAK4 inhibitor, a BCL-2 inhibitor, and a nucleoside analog.

## Claims

### Claim 1

A method of treating cancer in a subject, comprising conjointly administering to a subject in need thereof a pyrimidinyl nucleoside analog, a BCL-2 inhibitor and an IRAK4 inhibitor with a structure represented by formula (II):
or a pharmaceutically acceptable salt thereof;
wherein
X1 and X3 independently are CH or N; X2 is CR2 or N; provided one and not more than one of X1, X2 or X3 is N;
A is O or S;
Y is —CH2— or O;
Z is aryl or heterocyclyl;
R1, at each occurrence, is independently halo or optionally substituted heterocyclyl; wherein the substituent is alkyl, alkoxy, aminoalkyl, halo, hydroxyl, hydroxyalkyl or —NRaRb;
R2 is hydrogen, optionally substituted cycloalkyl, optionally substituted aryl, optionally substituted heterocyclyl or —NRaRb; wherein the substituent is alkyl, amino, halo or hydroxyl;
R3, at each occurrence, is alkyl or hydroxyl;
Ra and Rb are independently hydrogen, alkyl, acyl or heterocyclyl;
‘m’ and ‘n’ are independently 0, 1 or 2;
‘p’ is 0 or 1.

### Claim 2 (depends on 1)

The method of claim 1, wherein
A is O or S;
Y is —CH2— or O;
Z is aryl or heterocyclyl;
R1, at each occurrence, is independently halo or optionally substituted heterocyclyl, wherein the substituent is alkyl, aminoalkyl, halo, or —NRaRb; where Ra and Rb are independently hydrogen, alkyl, or heterocyclyl;
R2 is hydrogen, cycloalkyl, heterocyclyl or —NRaRb;
‘m’ is 0; and
‘n’ is 1.

### Claim 3 (depends on 1)

The method of claim 1, wherein
A is O or S;
Y is —CH2— or O;
Z is aryl or heterocyclyl;
R1, at each occurrence, is independently halo or optionally substituted heterocyclyl; wherein the substituent is alkyl, alkoxy, aminoalkyl, halo, hydroxyl or —NRaRb; where Ra and Rb are independently hydrogen, alkyl, or heterocyclyl;
R2 is hydrogen, cycloalkyl, optionally substituted heterocyclyl or —NRaRb, where the substituent is selected from amino, halo or hydroxyl;
‘m’ and ‘n’ are independently 0, 1 or 2; and
‘p’ is 0 or 1.

### Claim 4 (depends on 1)

The method of claim 1, wherein the moiety

### Claim 5 (depends on 1)

The method of claim 1, wherein Z is an optionally substituted heterocyclyl selected from phenyl, furanyl, thienyl, pyrrolyl, pyrazolyl, imidazolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, 1H-tetrazolyl, oxadiazolyl, triazolyl, pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, azetidinyl, oxetanyl, imidazolidinyl, pyrrolidinyl, oxazolidinyl, thiazolidinyl, pyrazolidinyl, tetrahydrofuranyl, piperidinyl, piperazinyl, tetrahydropyranyl, morpholinyl, thiomorpholinyl, 1,4-dioxanyl, dioxidothiomorpholinyl, oxapiperazinyl, oxapiperidinyl, tetrahydrofuryl, tetrahydropyranyl, tetrahydrothiophenyl, dihydropyranyl and azabicyclo[3.2.1]octanyl; each of which is optionally substituted with alkyl, alkoxy, halo, hydroxyl, hydroxyalkyl or —NRaRb; and Ra and Rb are independently hydrogen, alkyl or acyl.

### Claim 6 (depends on 1)

The method of claim 1, wherein the compound has a structure represented by formula (IIA):
or a pharmaceutically acceptable salt thereof.

### Claim 7 (depends on 6)

The method of claim 6, wherein
A is O or S;
Y is —CH2— or O;
R1, at each occurrence, is independently halo or optionally substituted heterocyclyl; wherein the substituent is alkyl, alkoxy, aminoalkyl, halo, hydroxyl or —NRaRb; where Ra and Rb are independently hydrogen, alkyl, or heterocyclyl;
R2 is hydrogen, cycloalkyl, optionally substituted heterocyclyl or —NRaRb; wherein the optional substituent is selected from amino, halo or hydroxyl; and
‘m’ and ‘n’ are independently 0, 1 or 2.

### Claim 8 (depends on 1)

The method of claim 1, wherein the compound has a structure represented by formula (IIB):
or a pharmaceutically acceptable salt thereof.

### Claim 9 (depends on 8)

The method of claim 8, wherein
A is O or S;
Y is —CH2— or O;
R1, at each occurrence, is independently halo or optionally substituted heterocyclyl; wherein the substituent is alkyl, alkoxy, aminoalkyl, halo, hydroxyl or —NRaRb; where Ra and Rb are independently hydrogen, alkyl, or heterocyclyl;
R2 is hydrogen, cycloalkyl, optionally substituted heterocyclyl or —NRaRb, where the optional substituent is selected from amino, halo or hydroxyl; and
‘m’ and ‘n’ are independently 0, 1 or 2.

### Claim 10 (depends on 1)

The method of claim 1, wherein the compound has a structure represented by formula (IIC)
or a pharmaceutically acceptable salt thereof.

### Claim 11 (depends on 1)

The method of claim 1, wherein R1 is optionally substituted heterocyclyl;
wherein the substituent is alkyl, alkoxy, aminoalkyl, halo, hydroxyl, hydroxyalkyl or —NRaRb; and
Ra and Rb are independently hydrogen, acyl, or heterocyclyl.

### Claim 12 (depends on 11)

The method of claim 11, wherein R1 is pyridyl, pyrazolyl, pyrrolidinyl or piperidinyl.

### Claim 13 (depends on 11)

The method of claim 11, wherein R1 is optionally substituted pyrazolyl, wherein the substituent is alkyl, hydroxyl or —NRaRb.

### Claim 14 (depends on 1)

The method of claim 1, wherein R1 is halo.

### Claim 15 (depends on 1)

The method of claim 1, wherein R2 is hydrogen, cycloalkyl, optionally substituted heterocyclyl or —NRaRb, where the substituent is selected from amino, halo or hydroxyl.

### Claim 16 (depends on 1)

The method of claim 1, wherein R2 is optionally substituted heterocyclyl selected from piperidinyl, pyrrolidinyl, morpholinyl, piperazinyl, azetidinyl, pyrazolyl, furanyl or azabicyclo[3.2.1]octanyl; wherein the substituent is hydroxyl, halo, alkyl or amino.

### Claim 17 (depends on 1)

The method of claim 1, wherein R2 is piperidinyl, pyrrolidinyl, morpholinyl, or piperazinyl.

### Claim 18 (depends on 1)

The method of claim 1, wherein R2 is hydrogen.

### Claim 19 (depends on 1)

The method of claim 1, wherein R2 is cycloalkyl.

### Claim 20 (depends on 19)

The method of claim 19, wherein R2 is cyclopropyl.

### Claim 21 (depends on 1)

The method of claim 1, wherein R3 is alkyl.

### Claim 22 (depends on 1)

The method of claim 1, wherein m is 0 and p is 1.

### Claim 23 (depends on 1)

The method of claim 1, wherein the compound of formula (II) is selected from:
6′-amino-N-(2-morpholinooxazolo[4,5-b]pyridin-6-yl)-[2,3′-bipyridine]-6-
carboxamide;
6′-amino-N-(5-cyclopropyl-2-morpholinooxazolo[4,5-b]pyridin-6-yl)-[2,3′-
bipyridine]-6-carboxamide hydrochloride;
N-(5-cyclopropyl-2-morpholinooxazolo[4,5-b]pyridin-6-yl)-2-(2-methylpyridin-4-
yl)oxazole-4-carboxamide hydrochloride;
N-(2,5-di(piperidin-1-yl)oxazolo[4,5-b]pyridin-6-yl)-6-(1H-pyrazol-4-
yl)picolinamide hydrochloride;
N-(2,5-di(piperidin-1-yl)oxazolo[4,5-b]pyridin-6-yl)-2-(2-methylpyridin-4-
yl)oxazole-4-carboxamide;
N-(2-morpholino-5-(piperidin-1-yl)oxazolo[4,5-b]pyridin-6-yl)-6-(1H-pyrazol-4-
yl)picolinamide;
2-(2-methylpyridin-4-yl)-N-(2-morpholino-5-(piperidin-1-yl)oxazolo[4,5-b]pyridin-
6-yl)oxazole-4-carboxamide;
6-chloro-N-(2-morpholino-5-(piperidin-1-yl)oxazolo[4,5-b]pyridin-6-
yl)picolinamide;
N-(2,5-di(piperidin-1-yl)oxazolo[4,5-b]pyridin-6-yl)-6-(1-methyl-1H-pyrazol-4-
yl)picolinamide;
2-(2-chloropyridin-4-yl)-N-(2,5-di(piperidin-1-yl)oxazolo[4,5-b]pyridin-6-
yl)oxazole-4-carboxamide;
(S)-2-(2-methylpyridin-4-yl)-N-(2-morpholino-5-(pyrrolidin-3-
ylamino)oxazolo[4,5-b]pyridin-6-yl)oxazole-4-carboxamide;
6′-amino-N-(2-morpholinooxazolo[5,4-b]pyridin-5-yl)-[2,3′-bipyridine]-6-
carboxamide;
6′-amino-N-(2-morpholinothiazolo[4,5-c]pyridin-6-yl)-[2,3′-bipyridine]-6-
carboxamide;
6′-amino-N-(2-morpholinothiazolo[5,4-b]pyridin-5-yl)-[2,3′-bipyridine]-6-
carboxamide;
2-(2-methylpyridin-4-yl)-N-(2-morpholinothiazolo[4,5-b]pyridin-6-yl)oxazole-4-
carboxamide;
6′-amino-N-(2-morpholinothiazolo[4,5-b]pyridin-6-yl)-[2,3′-bipyridine]-6-
carboxamide;
N-(2-morpholinothiazolo[4,5-b]pyridin-6-yl)-6-(1H-pyrazol-4-yl)picolinamide;
3-(4-(aminomethyl)piperidin-1-yl)-5-fluoro-N-(2-morpholinothiazolo[4,5-b]pyridin-
6-yl)benzamide;
2-(4-(aminomethyl)piperidin-1-yl)-5-fluoro-N-(2-morpholinothiazolo[4,5-b]pyridin-
6-yl)benzamide;
2-(2-methylpyridin-4-yl)-N-(2-morpholino-5-(piperidin-1-yl)thiazolo[4,5-b]pyridin-6-
yl)oxazole-4-carboxamide;
N-(2-morpholino-5-(piperidin-1-yl)thiazolo[4,5-b]pyridin-6-yl)-6-(1H-pyrazol-4-
yl)picolinamide;
N-(2,5-di(piperidin-1-yl)thiazolo[4,5-b]pyridin-6-yl)-6-(1H-pyrazol-4-
yl)picolinamide;
N-(2,5-di(piperidin-1-yl)thiazolo[4,5-b]pyridin-6-yl)-2-(2-methylpyridin-4-
yl)oxazole-4-carboxamide;
N-(2,5-dimorpholinooxazolo[4,5-b]pyridin-6-yl)-2-(2-methylpyridin-4-yl)oxazole-4-
carboxamide;
N-(5-(4-methylpiperazin-1-yl)-2-morpholinooxazolo[4,5-b]pyridin-6-yl)-2-(2-
methylpyridin-4-yl)oxazole-4-carboxamide;
N-(2,5-di(piperidin-1-yl)oxazolo[4,5-b]pyridin-6-yl)-2-(6-methoxypyridin-3-
yl)oxazole-4-carboxamide;
N-(2,5-di(piperidin-1-yl)oxazolo[4,5-b]pyridin-6-yl)-2-(2-methylpyridin-3-
yl)oxazole-4-carboxamide;
N-(2,5-di(piperidin-1-yl)oxazolo[4,5-b]pyridin-6-yl)-2-(2-hydroxypyridin-3-
yl)oxazole-4-carboxamide;
2-(2-hydroxypyridin-3-yl)-N-(2-morpholino-5-(piperidin-1-yl)oxazolo[4,5-
b]pyridin-6-yl)oxazole-4-carboxamide;
N-(2,5-di(piperidin-1-yl)oxazolo[4,5-b]pyridin-6-yl)-2-(6-hydroxypyridin-3-
yl)oxazole-4-carboxamide;
2-(2-methoxypyridin-4-yl)-N-(2-morpholino-5-(piperidin-1-yl)oxazolo[4,5-
b]pyridin-6-yl)oxazole-4-carboxamide;
2-(2-methylpyridin-3-yl)-N-(2-morpholino-5-(piperidin-1-yl)oxazolo[4,5-b]pyridin-6-
yl)oxazole-4-carboxamide;
2-(3-methylpyridin-4-yl)-N-(2-morpholino-5-(piperidin-1-yl)oxazolo[4,5-b]pyridin-6-
yl)oxazole-4-carboxamide;
N-(2,5-di(piperidin-1-yl)oxazolo[4,5-b]pyridin-6-yl)-2-(3-methylpyridin-4-
yl)oxazole-4-carboxamide;
2-(6-methylpyridin-3-yl)-N-(2-morpholino-5-(piperidin-1-yl)oxazolo[4,5-b]pyridin-6-
yl)oxazole-4-carboxamide;
6-(1-methyl-1H-pyrazol-4-yl)-N-(2-morpholino-5-(piperidin-1-yl)oxazolo[4,5-
b]pyridin-6-yl)picolinamide;
N-(2,5-di(piperidin-1-yl)oxazolo[4,5-b]pyridin-6-yl)-2-(6-methylpyridin-3-
yl)oxazole-4-carboxamide;
(S)-N-(5-(3-aminopyrrolidin-1-yl)-2-morpholinooxazolo[4,5-b]pyridin-6-yl)-2-(2-
methylpyridin-4-yl)oxazole-4-carboxamide;
(S)-N-(5-(3-hydroxypyrrolidin-1-yl)-2-morpholinooxazolo[4,5-b]pyridin-6-yl)-2-(2-
methylpyridin-4-yl)oxazole-4-carboxamide;
(R)-N-(5-(3-aminopyrrolidin-1-yl)-2-morpholinooxazolo[4,5-b]pyridin-6-yl)-2-(2-
methylpyridin-4-yl)oxazole-4-carboxamide;
(R)-N-(5-(3-hydroxypyrrolidin-1-yl)-2-morpholinooxazolo[4,5-b]pyridin-6-yl)-2-(2-
methylpyridin-4-yl)oxazole-4-carboxamide;
(S)-2-(3-aminopyrrolidin-1-yl)-N-(2-morpholino-5-(piperidin-1-yl)oxazolo[4,5-
b]pyridin-6-yl)oxazole-4-carboxamide;
(S)-6-(3-hydroxypyrrolidin-1-yl)-N-(2-morpholino-5-(piperidin-1-yl)oxazolo[4,5-
b]pyridin-6-yl)picolinamide;
(S)-6-(3-aminopyrrolidin-1-yl)-N-(2-morpholino-5-(piperidin-1-yl)oxazolo[4,5-
b]pyridin-6-yl)picolinamide;
(S)-2-(3-hydroxypyrrolidin-1-yl)-N-(2-morpholino-5-(piperidin-1-yl)oxazolo[4,5-
b]pyridin-6-yl)oxazole-4-carboxamide;
(S)-N-(5-cyclopropyl-2-morpholinooxazolo[4,5-b]pyridin-6-yl)-2-(3-
hydroxypyrrolidin-1-yl)oxazole-4-carboxamide;
(S)-2-(3-aminopyrrolidin-1-yl)-N-(5-cyclopropyl-2-morpholinooxazolo[4,5-
b]pyridin-6-yl)oxazole-4-carboxamide;
2-(2-methylpyridin-4-yl)-N-(5-(piperidin-1-yl)-2-(pyrrolidin-1-yl)oxazolo[4,5-
b]pyridin-6-yl)oxazole-4-carboxamide hydrochloride;
N-(2-(2,6-dimethylmorpholino)-5-(piperidin-1-yl)oxazolo[4,5-b]pyridin-6-yl)-2-(2-
methylpyridin-4-yl)oxazole-4-carboxamide hydrochloride;
N-(2,5-di(piperidin-1-yl)thiazolo[4,5-b]pyridin-6-yl)-6-(1-methyl-1H-pyrazol-4-
yl)picolinamide hydrochloride;
6-(1-methyl-1H-pyrazol-4-yl)-N-(2-morpholino-5-(piperidin-1-yl)thiazolo[4,5-
b]pyridin-6-yl)picolinamide;
N-(2,5-di(piperidin-1-yl)thiazolo[4,5-b]pyridin-6-yl)-2-(2-methylpyridin-3-
yl)oxazole-4-carboxamide hydrochloride;
N-(2-((2S,6R)-2,6-dimethylmorpholino)-5-(piperidin-1-yl)thiazolo[4,5-b]pyridin-6-
yl)-2-(2-methylpyridin-4-yl)oxazole-4-carboxamide;
2-(2-methylpyridin-3-yl)-N-(2-morpholino-5-(piperidin-1-yl)thiazolo[4,5-b]pyridin-
6-yl)oxazole-4-carboxamide;
2-(2-hydroxypyridin-3-yl)-N-(2-morpholino-5-(piperidin-1-yl)thiazolo[4,5-
b]pyridin-6-yl)oxazole-4-carboxamide;
N-(2,5-di(piperidin-1-yl)thiazolo[4,5-b]pyridin-6-yl)-2-(2-methoxypyridin-4-
yl)oxazole-4-carboxamide;
2-(6-methoxypyridin-3-yl)-N-(2-morpholino-5-(piperidin-1-yl)thiazolo[4,5-
b]pyridin-6-yl)oxazole-4-carboxamide;
2-(2-methoxypyridin-4-yl)-N-(2-morpholino-5-(piperidin-1-yl)thiazolo[4,5-
b]pyridin-6-yl)oxazole-4-carboxamide;
(S)-N-(5-(3-fluoropiperidin-1-yl)-2-morpholinothiazolo[4,5-b]pyridin-6-yl)-2-(2-
methylpyridin-4-yl)oxazole-4-carboxamide;
2-(6-methylpyridin-3-yl)-N-(2-morpholino-5-(piperidin-1-yl)thiazolo[4,5-b]pyridin-
6-yl)oxazole-4-carboxamide;
2-(3-methylpyridin-4-yl)-N-(2-morpholino-5-(piperidin-1-yl)thiazolo[4,5-b]pyridin-
6-yl)oxazole-4-carboxamide;
(S)-6-(3-aminopyrrolidin-1-yl)-N-(2-morpholino-5-(piperidin-1-yl)thiazolo[4,5-
b]pyridin-6-yl)picolinamide;
(S)-6-(3-hydroxypyrrolidin-1-yl)-N-(2-morpholino-5-(piperidin-1-yl)thiazolo[4,5-
b]pyridin-6-yl)picolinamide;
(S)-6-(3-aminopyrrolidin-1-yl)-N-(2,5-di(piperidin-1-yl)thiazolo[4,5-b]pyridin-6-
yl)picolinamide;
(S)-N-(2,5-di(piperidin-1-yl)thiazolo[4,5-b]pyridin-6-yl)-6-(3-hydroxypyrrolidin-1-
yl)picolinamide;
(S)-2-(3-aminopyrrolidin-1-yl)-N-(2-morpholino-5-(piperidin-1-yl)thiazolo[4,5-
b]pyridin-6-yl)oxazole-4-carboxamide;
(S)-N-(5-(3-aminopyrrolidin-1-yl)-2-morpholinothiazolo[4,5-b]pyridin-6-yl)-2-(2-
methylpyridin-4-yl)oxazole-4-carboxamide;
(S)-2-(3-aminopyrrolidin-1-yl)-N-(5-cyclopropyl-2-morpholinothiazolo[4,5-
b]pyridin-6-yl)oxazole-4-carboxamide;
N-(5-cyclopropyl-2-morpholinothiazolo[4,5-b]pyridin-6-yl)-2-(2-methylpyridin-4-
yl)oxazole-4-carboxamide;
(S)-2-(3-hydroxypyrrolidin-1-yl)-N-(2-morpholino-5-(piperidin-1-yl)thiazolo[4,5-
b]pyridin-6-yl)oxazole-4-carboxamide;
(S)-N-(5-(3-hydroxypyrrolidin-1-yl)-2-morpholinothiazolo[4,5-b]pyridin-6-yl)-2-(2-
methylpyridin-4-yl)oxazole-4-carboxamide;
(S)-N-(5-cyclopropyl-2-morpholinothiazolo[4,5-b]pyridin-6-yl)-6-(3-
hydroxypyrrolidin-1-yl)picolinamide;
(S)-N-(5-cyclopropyl-2-morpholinothiazolo[4,5-b]pyridin-6-yl)-2-(3-
hydroxypyrrolidin-1-yl)oxazole-4-carboxamide;
(S)-N-(5-cyclopropyl-2-morpholinothiazolo[4,5-b]pyridin-6-yl)-6-(1-(2-
hydroxypropyl)-1H-pyrazol-4-yl)picolinamide;
(S)-N-(5-cyclopropyl-2-morpholinothiazolo[4,5-b]pyridin-6-yl)-2-(1-(2-
hydroxypropyl)-1H-pyrazol-4-yl)oxazole-4-carboxamide;
N-(5-(3-hydroxypyrrolidin-1-yl)-2-morpholinothiazolo[4,5-b]pyridin-6-yl)-2-(6-
methoxypyridin-3-yl)oxazole-4-carboxamide;
(S)-N-(5-(3-hydroxypyrrolidin-1-yl)-2-morpholinothiazolo[4,5-b]pyridin-6-yl)-2-(6-
methoxypyridin-3-yl)oxazole-4-carboxamide;
(R)-N-(5-(3-hydroxypyrrolidin-1-yl)-2-morpholinothiazolo[4,5-b]pyridin-6-yl)-2-(6-
methoxypyridin-3-yl)oxazole-4-carboxamide;
(S)-N-(5-(azetidin-1-yl)-2-morpholinothiazolo[4,5-b]pyridin-6-yl)-6-(3-
hydroxypyrrolidin-1-yl)picolinamide;
N-(5-(3-hydroxyazetidin-1-yl)-2-morpholinothiazolo[4,5-b]pyridin-6-yl)-2-(2-
methylpyridin-4-yl)oxazole-4-carboxamide;
(S)-N-(5-(3-hydroxypyrrolidin-1-yl)-2-morpholinothiazolo[4,5-b]pyridin-6-yl)-5-(2-
methylpyridin-4-yl)thiophene-2-carboxamide;
(S)-N-(5-(3-hydroxypyrrolidin-1-yl)-2-morpholinothiazolo[4,5-b]pyridin-6-yl)-5-(2-
methylpyridin-4-yl)furan-2-carboxamide;
(S)-N-(5-(3-hydroxypiperidin-1-yl)-2-morpholinothiazolo[4,5-b]pyridin-6-yl)-2-(2-
methylpyridin-4-yl)oxazole-4-carboxamide;
N-(5-(4-hydroxypiperidin-1-yl)-2-morpholinothiazolo[4,5-b]pyridin-6-yl)-2-(2-
methylpyridin-4-yl)oxazole-4-carboxamide;
(R)-N-(5-(3-hydroxypyrrolidin-1-yl)-2-morpholinothiazolo[4,5-b]pyridin-6-yl)-2-(2-
methylpyridin-4-yl)oxazole-4-carboxamide;
N-(5-(4-hydroxypiperidin-1-yl)-2-morpholinothiazolo[4,5-b]pyridin-6-yl)-5-(2-
methylpyridin-4-yl)furan-2-carboxamide;
N-(5-(azetidin-1-yl)-2-(piperidin-1-yl)thiazolo[4,5-b]pyridin-6-yl)-2-(2-
methylpyridin-4-yl)oxazole-4-carboxamide;
2-(2-methylpyridin-4-yl)-N-(2-(piperidin-1-yl)-5-(pyrrolidin-1-yl)thiazolo[4,5-
b]pyridin-6-yl)oxazole-4-carboxamide;
2-(2-methylpyridin-4-yl)-N-(2-morpholino-5-(pyrrolidin-1-yl)thiazolo[4,5-b]pyridin-
6-yl)oxazole-4-carboxamide;
5-(2-methylpyridin-4-yl)-N-(2-morpholino-5-(piperidin-1-yl)thiazolo[4,5-b]pyridin-6-
yl)furan-2-carboxamide;
N-(5-(azepan-1-yl)-2-morpholinothiazolo[4,5-b]pyridin-6-yl)-2-(2-methylpyridin-4-
yl)oxazole-4-carboxamide;
2-(2-aminopyridin-4-yl)-N-(2-morpholino-5-(piperidin-1-yl)thiazolo[4,5-b]pyridin-6-
yl)oxazole-4-carboxamide hydrochloride;
N-(5-(azetidin-1-yl)-2-morpholinothiazolo[4,5-b]pyridin-6-yl)-2-(2-methylpyridin-4-
yl)oxazole-4-carboxamide;
(R)-N-(5-(3-hydroxypiperidin-1-yl)-2-morpholinothiazolo[4,5-b]pyridin-6-yl)-2-(2-
methylpyridin-4-yl)oxazole-4-carboxamide;
(R)-N-(5-(3-hydroxypiperidin-1-yl)-2-morpholinothiazolo[4,5-b]pyridin-6-yl)-5-(2-
methylpyridin-4-yl)furan-2-carboxamide;
(S)-6-(1-(2-hydroxypropyl)-1H-pyrazol-4-yl)-N-(2-morpholino-5-(piperidin-1-
yl)thiazolo[4,5-b]pyridin-6-yl)picolinamide;
N-(5-(4-fluoropiperidin-1-yl)-2-morpholinothiazolo[4,5-b]pyridin-6-yl)-5-(2-
methylpyridin-4-yl)furan-2-carboxamide;
N-(5-(4-fluoropiperidin-1-yl)-2-morpholinothiazolo[4,5-b]pyridin-6-yl)-2-(2-
methylpyridin-4-yl)oxazole-4-carboxamide hydrochloride;
N-(5-(1-methyl-1H-pyrazol-4-yl)-2-morpholinothiazolo[4,5-b]pyridin-6-yl)-2-(2-
methylpyridin-4-yl)oxazole-4-carboxamide;
N-(5-(3-fluorophenyl)-2-morpholinothiazolo[4,5-b]pyridin-6-yl)-2-(2-methylpyridin-
4-yl)oxazole-4-carboxamide;
N-(5-(4-hydroxypiperidin-1-yl)-2-morpholinothiazolo[4,5-b]pyridin-6-yl)-5-(2-
methylpyridin-4-yl)furan-2-carboxamide;
N-(5-(3-fluoropiperidin-1-yl)-2-morpholinothiazolo[4,5-b]pyridin-6-yl)-5-(2-
methylpyridin-4-yl)furan-2-carboxamide;
(S)-N-(5-(3-hydroxypyrrolidin-1-yl)-2-morpholinooxazolo[4,5-b]pyridin-6-yl)-2-(6-
methoxypyridin-3-yl)oxazole-4-carboxamide;
N-(5-(3-hydroxypyrrolidin-1-yl)-2-morpholinooxazolo[4,5-b]pyridin-6-yl)-2-(2-
methylpyridin-4-yl)oxazole-4-carboxamide;
(R)-N-(5-(3-hydroxypyrrolidin-1-yl)-2-morpholinooxazolo[4,5-b]pyridin-6-yl)-2-(6-
methoxypyridin-3-yl)oxazole-4-carboxamide;
N-(5-(3-hydroxypyrrolidin-1-yl)-2-morpholinooxazolo[4,5-b]pyridin-6-yl)-2-(6-
methoxypyridin-3-yl)oxazole-4-carboxamide;
(S)-N-(5-(3-hydroxypyrrolidin-1-yl)-2-morpholinooxazolo[4,5-b]pyridin-6-yl)-5-(2-
methylpyridin-4-yl)furan-2-carboxamide;
(S)-N-(5-(3-hydroxypyrrolidin-1-yl)-2-morpholinooxazolo[4,5-b]pyridin-6-yl)-5-(2-
methylpyridin-4-yl)thiophene-2-carboxamide;
N-(5-(azetidin-1-yl)-2-(piperidin-1-yl)oxazolo[4,5-b]pyridin-6-yl)-2-(2-
methylpyridin-4-yl)oxazole-4-carboxamide;
2-(2-methylpyridin-4-yl)-N-(2-(piperidin-1-yl)-5-(pyrrolidin-1-yl)oxazolo[4,5-
b]pyridin-6-yl)oxazole-4-carboxamide;
5-(2-methylpyridin-4-yl)-N-(2-morpholino-5-(piperidin-1-yl)oxazolo[4,5-b]pyridin-6-
yl)furan-2-carboxamide;
N-(5-(azetidin-1-yl)-2-morpholinooxazolo[4,5-b]pyridin-6-yl)-2-(2-methylpyridin-4-
yl)oxazole-4-carboxamide;
2-(2-methylpyridin-4-yl)-N-(2-morpholino-5-(pyrrolidin-1-yl)oxazolo[4,5-b]pyridin-
6-yl)oxazole-4-carboxamide;
N-(5-(4-hydroxypiperidin-1-yl)-2-morpholinooxazolo[4,5-b]pyridin-6-yl)-5-(2-
methylpyridin-4-yl)furan-2-carboxamide;
(R)-N-(5-(3-hydroxypiperidin-1-yl)-2-morpholinooxazolo[4,5-b]pyridin-6-yl)-5-(2-
methylpyridin-4-yl)furan-2-carboxamide;
N-(5-(furan-3-yl)-2-morpholinooxazolo[4,5-b]pyridin-6-yl)-2-(2-methylpyridin-4-
yl)oxazole-4-carboxamide;
N-(5-(3-fluoropiperidin-1-yl)-2-morpholinooxazolo[4,5-b]pyridin-6-yl)-2-(2-
methylpyridin-4-yl)oxazole-4-carboxamide;
N-(5-(4-hydroxypiperidin-1-yl)-2-morpholinooxazolo[4,5-b]pyridin-6-yl)-2-(2-
methylpyridin-4-yl)oxazole-4-carboxamide;
N-(5-(4-fluoropiperidin-1-yl)-2-morpholinooxazolo[4,5-b]pyridin-6-yl)-2-(2-
methylpyridin-4-yl)oxazole-4-carboxamide;
(S)-N-(5-(3-aminopiperidin-1-yl)-2-morpholinothiazolo[4,5-b]pyridin-6-yl)-2-(2-
methylpyridin-4-yl)oxazole-4-carboxamide;
2-(2-methylpyridin-4-yl)-N-(2-morpholino-5-(1H-pyrazol-4-yl)thiazolo[4,5-
b]pyridin-6-yl)oxazole-4-carboxamide;
N-(5-(6-fluoropyridin-3-yl)-2-morpholinothiazolo[4,5-b]pyridin-6-yl)-2-(2-
methylpyridin-4-yl)oxazole-4-carboxamide;
N-(5-(3-hydroxy-8-azabicyclo[3.2.1]octan-8-yl)-2-morpholinothiazolo[4,5-b]pyridin-
6-yl)-2-(2-methylpyridin-4-yl)oxazole-4-carboxamide;
N-(2-(3-hydroxypiperidin-1-yl)-5-(piperidin-1-yl)thiazolo[4,5-b]pyridin-6-yl)-2-(2-
methylpyridin-4-yl)oxazole-4-carboxamide;
2-(2-acetamidopyridin-4-yl)-N-(5-(4-hydroxypiperidin-1-yl)-2-
morpholinothiazolo[4,5-b]pyridin-6-yl)oxazole-4-carboxamide;
N-(2-(3-hydroxypiperidin-1-yl)-5-(4-hydroxypiperidin-1-yl)thiazolo[4,5-b]pyridin-6-
yl)-2-(2-methylpyridin-4-yl)oxazole-4-carboxamide;
2-(2-acetamidopyridin-4-yl)-N-(5-(3-hydroxypiperidin-1-yl)-2-
morpholinothiazolo[4,5-b]pyridin-6-yl)oxazole-4-carboxamide;
2-(2-aminopyridin-4-yl)-N-(5-(3-hydroxypiperidin-1-yl)-2-morpholinothiazolo[4,5-
b]pyridin-6-yl)oxazole-4-carboxamide hydrochloride;
5-(2-aminopyridin-4-yl)-N-(5-(4-hydroxypiperidin-1-yl)-2-morpholinothiazolo[4,5-
b]pyridin-6-yl)furan-3-carboxamide hydrochloride;
2-(2-aminopyridin-4-yl)-N-(5-(4-hydroxypiperidin-1-yl)-2-morpholinothiazolo[4,5-
b]pyridin-6-yl)oxazole-4-carboxamide hydrochloride;
2-(2-aminopyridin-4-yl)-N-(5-(4-fluoropiperidin-1-yl)-2-morpholinothiazolo[4,5-
b]pyridin-6-yl)oxazole-4-carboxamide hydrochloride;
N-(5-(2-fluoropyridin-4-yl)-2-morpholinothiazolo[4,5-b]pyridin-6-yl)-2-(2-
methylpyridin-4-yl)oxazole-4-carboxamide;
N-(5-(4-fluoropiperidin-1-yl)-2-(3-hydroxypiperidin-1-yl)thiazolo[4,5-b]pyridin-6-
yl)-2-(2-methylpyridin-4-yl)oxazole-4-carboxamide;
N-(5-(4-aminopiperidin-1-yl)-2-(3-hydroxypiperidin-1-yl)thiazolo[4,5-b]pyridin-6-
yl)-2-(2-methylpyridin-4-yl)oxazole-4-carboxamide hydrochloride; and
N-(5-(2-hydroxypyridin-4-yl)-2-morpholinothiazolo[4,5-b]pyridin-6-yl)-2-(2-
methylpyridin-4-yl)oxazole-4-carboxamide hydrochloride;
or a pharmaceutically acceptable salt or a stereoisomer thereof.

### Claim 24 (depends on 1)

The method of claim 1, wherein the nucleoside analog is azacitidine, decitabine, cytarabine, gemcitabine, 5′-deoxy-5-fluorouridine, fludarabine, cladribine, troxacitabine, or clofarabine.

### Claim 25 (depends on 1)

The method of claim 1, wherein the cancer is a hematological malignancy.

### Claim 26 (depends on 25)

The method of claim 25, wherein the hematological malignancy is a non-Hodgkin's lymphoma.

### Claim 27 (depends on 25)

The method of claim 25, wherein the hematological malignancy is a leukemia or lymphoma.

### Claim 28 (depends on 25)

The method of claim 25, wherein the is hematological malignancy is myelogenous leukemia, myeloid leukemia, myelodysplastic syndrome, lymphoblastic leukemia, chronic lymphocytic leukemia (CLL), small lymphocytic lymphoma (SLL), high risk CLL, follicular lymphoma, diffuse large B-cell lymphoma (DLBCL), mantle cell lymphoma (MCL), Waldenstrom's macroglobulinemia (WM), multiple myeloma, marginal zone lymphoma (MZL), Burkitt's lymphoma, non-Burkitt high grade B cell lymphoma, extranodal marginal zone B cell lymphoma, transformed high grade B-cell lymphoma (HGBL), lymphoplasmacytic lymphoma (LPL), central nervous system lymphoma (CNSL), or MALT lymphoma.

### Claim 29 (depends on 25)

The method of claim 25, wherein the hematological malignancy is relapsed or refractory.

### Claim 30 (depends on 1)

The method of claim 1, wherein the BCL-2 inhibitor is venetoclax.