METHODS OF TREATING MYELOID MALIGNANCIES USING BCL-2 INHIBITOR

1 . A method of treating myeloid malignancies in a subject, the method comprising administering to the subject a therapeutically effective amount of a Bcl-2 inhibitor, in combination with a therapeutically effective amount of azacitidine, wherein the myeloid malignancies are acute myeloid leukemia (AML), myelodysplastic syndrome (MDS), or MDS/myeloproliferative neoplasm (MPN); and

the Bcl-2 inhibitor is selected from the group consist of:

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-((S)-2-(2-cyclopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((4-((((1r,4r)-4-hydroxy-4-methylcyclohexyl)methyl)amino)-3-nitrophenyl)sulfonyl)benzamide;

(S)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(2-cyclopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((4-(((4-fluorotetrahydro-2H-pyran-4-yl)methyl)amino)-3-nitrophenyl)sulfonyl)benzamide;

(S)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(2-cyclopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

(S)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(2-ethylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

(S)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(2-ethylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((4-(((4-fluorotetrahydro-2H-pyran-4-yl)methyl)amino)-3-nitrophenyl)sulfonyl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-((S)-2-(2-ethylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((4-((((1r,4r)-4-hydroxy-4-methylcyclohexyl)methyl)amino)-3-nitrophenyl)sulfonyl)benzamide;

(R)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(2-cyclopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

(R)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(2-cyclopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((4-(((4-fluorotetrahydro-2H-pyran-4-yl)methyl)amino)-3-nitrophenyl)sulfonyl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-((R)-2-(2-cyclopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((4-((((1r,4r)-4-hydroxy-4-methylcyclohexyl)methyl)amino)-3-nitrophenyl)sulfonyl)benzamide;

(S)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(7-(2-(2-cyclopropylphenyl)pyrrolidin-1-yl)-2-azaspiro[3.5]nonan-2-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

(R)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(7-(2-(2-cyclopropylphenyl)pyrrolidin-1-yl)-2-azaspiro[3.5]nonan-2-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

(S)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(9-(2-(2-cyclopropylphenyl)pyrrolidin-1-yl)-3-azaspiro[5.5]undecan-3-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

(R)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(9-(2-(2-cyclopropylphenyl)pyrrolidin-1-yl)-3-azaspiro[5.5]undecan-3-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

(S)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(6-(2-(2-cyclopropylphenyl)pyrrolidin-1-yl)-2-azaspiro[3.3]heptan-2-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

(R)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(6-(2-(2-cyclopropylphenyl)pyrrolidin-1-yl)-2-azaspiro[3.3]heptan-2-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(3-chloro-2-(dimethylamino)phenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

N-((4-((((S)-1,4-dioxan-2-yl)methyl)amino)-3-nitrophenyl)sulfonyl)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-((S)-2-(2-cyclopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)benzamide;

N-((4-((((R)-1,4-dioxan-2-yl)methyl)amino)-3-nitrophenyl)sulfonyl)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-((S)-2-(2-cyclopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)benzamide;

(S)2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-((S)-2-(2-cyclopropylphenyl)pyrrolidin-1-yl)-8-azaspiro[4.5]decan-8-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

(R) 2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-((S)-2-(2-cyclopropylphenyl)pyrrolidin-1-yl)-8-azaspiro[4.5]decan-8-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

N-((4-((((S)-1,4-dioxan-2-yl)methyl)amino)-3-nitrophenyl)sulfonyl)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-((S)-2-(2-ethylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)benzamide;

N-((4-((((R)-1,4-dioxan-2-yl)methyl)amino)-3-nitrophenyl)sulfonyl)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-((S)-2-(2-ethylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)benzamide;

(S)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(8-(2-(2-cyclopropylphenyl)pyrrolidin-1-yl)-2-azaspiro[4.5]decan-2-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-N-((4-((((1r,4r)-4-hydroxy-4-methylcyclohexyl)methyl)amino)-3-nitrophenyl)sulfonyl)-4-(2-((S)-2-(2-isopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)benzamide;

N-((4-((((S)-1,4-dioxan-2-yl)methyl)amino)-3-nitrophenyl)sulfonyl)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-((S)-2-(2-isopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)benzamide;

(S)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(2-isopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

(S)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-N-((4-(((4-fluorotetrahydro-2H-pyran-4-yl)methyl)amino)-3-nitrophenyl)sulfonyl)-4-(2-(2-(2-isopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)benzamide;

N-((4-((((R)-1,4-dioxan-2-yl)methyl)amino)-3-nitrophenyl)sulfonyl)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-((S)-2-(2-isopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-N-((4-((((1s,4s)-4-hydroxy-4-methylcyclohexyl)methyl)amino)-3-nitrophenyl)sulfonyl)-4-(2-((S)-2-(2-isopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-N-((4-((((1r,4r)-4-hydroxy-4-methylcyclohexyl)methyl)amino)-3-nitrophenyl)sulfonyl)-4-(2-((R)-2-(2-isopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-N-((4-((((1s,4s)-4-hydroxy-4-methylcyclohexyl)methyl)amino)-3-nitrophenyl)sulfonyl)-4-(2-((R)-2-(2-isopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(2-cyclobutylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

(S)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(2-isobutylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(3-cyclopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

(S)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)-4-(2-(2-(o-tolyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)benzamide;

(S)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(2-chlorophenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

(S)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(2-bromophenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

(R)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(2-chlorophenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

(S)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(3-chlorophenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

(R)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(3-chlorophenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

(S)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(4-chlorophenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

(S)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(2-ethoxyphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

(S)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(2-(dimethylamino)phenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-((S)-2-(2-(dimethylamino)phenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((4-((((1r,4r)-4-hydroxy-4-methylcyclohexyl)methyl)amino)-3-nitrophenyl)sulfonyl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-((S)-2-(2-(bis(methyl-d3)amino)phenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((4-((((1r,4r)-4-hydroxy-4-methylcyclohexyl)methyl)amino)-3-nitrophenyl)sulfonyl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)-4-(2-(2-(2-(pyrrolidin-1-yl)phenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)benzamide;

(S)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(2-(1-methyl-1,2,3,6-tetrahydropyridin-4-yl)phenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

(S)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(2-(1-methylpiperidin-4-yl)phenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

(S)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(2-methoxyphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

(S)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(2-isopropoxyphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(2-(methoxymethyl)phenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(2-(hydroxymethyl)phenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

(R)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(3-chloro-2-cyclopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

(S)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(3-chloro-2-cyclopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(5-chloro-2-cyclopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

(R)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(3-chloro-2-ethylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

(S or R)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(3-chloro-2-ethylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(2,4-dicyclopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(2,5-dicyclopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(3-(2-chlorophenyl)thiophen-2-yl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(2-cyclopropylphenyl)-4-methylpyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(4-cyclopropyl-2-(2-cyclopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(2-cyclopropylphenyl)-4-phenyl-2,5-dihydro-1H-pyrrol-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(2-cyclopropylphenyl)-4,4-dimethylpyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(2-cyclopropylphenyl)-4,4-difluoropyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(2-cyclopropylphenyl)-4-(trifluoromethyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((4-((((1r,4r)-4-hydroxy-4-methylcyclohexyl)methyl)amino)-3-nitrophenyl)sulfonyl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(2-cyclopropylphenyl)-4-(dimethylamino)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(2-cyclopropylphenyl)-4-(2-(dimethylamino)ethoxy)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(2-cyclopropylphenyl)-3,3-dimethylpyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-((S)-2-(2-cyclopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((4-(((((1s,4s) or (1r,4r))-4-((dimethyl(oxo)-16-sulfaneylidene)amino)cyclohexyl)methyl)amino)-3-nitrophenyl)sulfonyl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-((S)-2-(2-cyclopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-(methyl(3-nitro-4-(((tetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)(oxo)-16-sulfaneylidene)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-N-((4-(((-3-oxabicyclo[3.1.0]hexan-6-yl)methyl)amino)-3-nitrophenyl)sulfonyl)-4-(2-((S)-2-(2-isopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)benzamide;

(S)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(2-cyclopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((4-(((4-hydroxy-4-(trifluoromethyl)cyclohexyl)methyl)amino)-3-nitrophenyl)sulfonyl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-N-((4-((((1r,4r)-4-hydroxy-4-(trifluoromethyl)cyclohexyl)methyl)amino)-3-nitrophenyl)sulfonyl)-4-(2-((S)-2-(2-isopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-N-((4-((((1s,4s)-4-hydroxy-4-(trifluoromethyl)cyclohexyl)methyl)amino)-3-nitrophenyl)sulfonyl)-4-(2-((S)-2-(2-isopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-((S)-2-(2-isopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((4-((((1r,4r)-4-methoxy-4-methylcyclohexyl)methyl)amino)-3-nitrophenyl)sulfonyl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-((S)-2-(2-isopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((4-((((S)-4-methylcyclohex-3-en-1-yl)methyl)amino)-3-nitrophenyl)sulfonyl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-N-((4-((((1r,4r)-4-hydroxy-4-methylcyclohexyl)methyl)amino)-3-nitrophenyl)sulfonyl)-4-(2-((S)-2-(2-(prop-1-en-2-yl)phenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-N-((4-((((1r,4r)-4-hydroxy-4-methylcyclohexyl)methyl)amino)-3-nitrophenyl)sulfonyl)-4-(2-((S)-2-(2-propylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(6-((S)-2-(2-cyclopropylphenyl)pyrrolidin-1-yl)-2-azaspiro[3.3]heptan-2-yl)-N-((4-((((1r,4r)-4-hydroxy-4-methylcyclohexyl)methyl)amino)-3-nitrophenyl)sulfonyl)benzamide;

N-((4-((((S)-1,4-dioxan-2-yl)methyl)amino)-3-nitrophenyl)sulfonyl)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(6-((S)-2-(2-cyclopropylphenyl)pyrrolidin-1-yl)-2-azaspiro[3.3]heptan-2-yl)benzamide;

N-((4-((((R)-1,4-dioxan-2-yl)methyl)amino)-3-nitrophenyl)sulfonyl)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(6-((S)-2-(2-cyclopropylphenyl)pyrrolidin-1-yl)-2-azaspiro[3.3]heptan-2-yl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-N-((4-((((1r,4r)-4-hydroxy-4-methylcyclohexyl)methyl)amino)-3-nitrophenyl)sulfonyl)-4-(6-((S)-2-(2-isopropylphenyl)pyrrolidin-1-yl)-2-azaspiro[3.3]heptan-2-yl)benzamide;

N-((4-((((S)-1,4-dioxan-2-yl)methyl)amino)-3-nitrophenyl)sulfonyl)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(6-((S)-2-(2-isopropylphenyl)pyrrolidin-yl)-2-azaspiro[3.3]heptan-2-yl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(6-((S)-2-(2-ethylphenyl)pyrrolidin-1-yl)-2-azaspiro[3.3]heptan-2-yl)-N-((4-((((1r,4r)-4-hydroxy-4-methylcyclohexyl)methyl)amino)-3-nitrophenyl)sulfonyl)benzamide;

N-((4-((((S)-1,4-dioxan-2-yl)methyl)amino)-3-nitrophenyl)sulfonyl)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(6-((S)-2-(2-ethylphenyl)pyrrolidin-1-yl)-2-azaspiro[3.3]heptan-2-yl)benzamide;

(S)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(2-cyclopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-((2-(tetrahydro-2H-pyran-4-yl)ethyl)amino)phenyl)sulfonyl)benzamide;

(S)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(2-cyclopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((4-((2-morpholinoethyl)amino)-3-nitrophenyl)sulfonyl)benzamide;

(S)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(2-cyclopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-((2-(3-oxomorpholino)ethyl)amino)phenyl)sulfonyl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-N-((4-(((3-oxabicyclo[3.1.0]hexan-6-yl)methyl)amino)-3-nitrophenyl)sulfonyl)-4-(2-((S)-2-(2-cyclopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-((S)-2-(2-cyclopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((4-(((2,6-dimethyltetrahydro-2H-pyran-4-yl)methyl)amino)-3-nitrophenyl)sulfonyl)benzamide;

(S)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(2-cyclopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((3-nitro-4-(((2,2,6,6-tetramethyltetrahydro-2H-pyran-4-yl)methyl)amino)phenyl)sulfonyl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-((S)-2-(2-cyclopropylphenyl)pyrrolidin-1-yl)-6-azaspiro[3.4]octan-6-yl)-N-((4-((((1r,4r)-4-hydroxy-4-methylcyclohexyl)methyl)amino)-3-nitrophenyl)sulfonyl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(6-((S)-2-(2-cyclopropylphenyl)pyrrolidin-1-yl)-2-azaspiro[3.4]octan-2-yl)-N-((4-((((1r,4r)-4-hydroxy-4-methylcyclohexyl)methyl)amino)-3-nitrophenyl)sulfonyl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-((7R or 7S)-7-((S)-2-(2-cyclopropylphenyl)pyrrolidin-1-yl)-2-azaspiro[4.4]nonan-2-yl)-N-((4-((((1r,4r)-4-hydroxy-4-methylcyclohexyl)methyl)amino)-3-nitrophenyl)sulfonyl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-((7S or 7R)-7-((S)-2-(2-cyclopropylphenyl)pyrrolidin-1-yl)-2-azaspiro[4.4]nonan-2-yl)-N-((4-((((1r,4r)-4-hydroxy-4-methylcyclohexyl)methyl)amino)-3-nitrophenyl)sulfonyl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-((S)-2-(2-cyclopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((4-(((2,2-dimethyltetrahydro-2H-pyran-4-yl)methyl)amino)-3-nitrophenyl)sulfonyl)benzamide;

(S)-2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-(2-(2-cyclopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((4-(3-methyl-3-((tetrahydro-2H-pyran-4-yl)methyl)ureido)-3-nitrophenyl)sulfonyl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-N-((4-((((1r,4r)-4-hydroxy-4-methylcyclohexyl)methyl)amino)-3-nitrophenyl)sulfonyl)-4-(2-((S)-2-phenylpyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-((S)-2-(2-cyclopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((4-((((cis or trans)-4-hydroxytetrahydrofuran-2-yl)methyl)amino)-3-nitrophenyl)sulfonyl)benzamide;

2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-4-(2-((S)-2-(2-cyclopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)-N-((4-((((trans or cis)-4-hydroxytetrahydrofuran-2-yl)methyl)amino)-3-nitrophenyl)sulfonyl)benzamide;

or a pharmaceutically acceptable salt thereof, or a stereoisomer thereof.

2 . The mothed of claim 1 , wherein the Bcl-2 inhibitor is 2-((1H-pyrrolo[2,3-b]pyridin-5-yl)oxy)-N-((4-((((1r,4r)-4-hydroxy-4-methylcyclohexyl)methyl)amino)-3-nitrophenyl)sulfonyl)-4-(2-((S)-2-(2-isopropylphenyl)pyrrolidin-1-yl)-7-azaspiro[3.5]nonan-7-yl)benzamide or a pharmaceutically acceptable salt thereof.

3 . The method of claims 1 or 2 , wherein the acute myeloid leukemia (AML) is either treatment-naïve (TN) unfit for intensive induction chemotherapy or relapsed/refractory (R/R).

4 . The method of claims 1 or 2 comprising orally administering once daily the Bcl-2 inhibitor to the patient in escalating doses, wherein the escalating doses comprise an initial dose of 5, 10, 20, or 40 mg of the Bcl-2 inhibitor per day.

5 . The method of claim 4 , wherein the Bcl-2 inhibitor is orally administrated in two Cycles, comprising a 4-day ramp-up schedule (Cycle 1) and a subsequent cycle (Cycle 2).

6 . The method of claim 5 , wherein each of the 4-day ramp-up schedule (Cycle 1) is a 10-day cycle, 21-day cycle, or a 28-day cycle; and the subsequent cycles (Cycle 2) is a 10-day cycle, 21-day cycle, or a 28-day cycle.

7 . The method of claim 6 , wherein the 4-day ramp-up schedule (Cycle 1) of the Bcl-2 inhibitor administration comprises the first dose at Day 1, the second dose on Day 2, the third dose on Day 3, and a recommended dose on Day 4 and beyond, wherein the recommended dose on Day 4 and beyond is higher than the second dose on Day 3, the third dose on Day 3 is higher than the second dose on Day 2, and the second dose on Day 2 is higher than the second dose on Day 1.

8 . The method of claim 7 , wherein the 4-day ramp-up schedule (Cycle 1) of the Bcl-2 inhibitor administration comprises the first dose on Day 1 at 12.5% of the recommended dose, the second dose on Day 2 at 25% of recommended dose, the third dose on Day 3 at 50% of recommended dose, and the daily dose on Day 4 and beyond at 100% of the recommended dose.

9 . The method of claim 8 , wherein subsequent cycle (Cycle 2) of the Bcl-2 inhibitor administration is at a dose of a recommended dose from Day 1 with no ramp-up.

10 . The method of claim 9 , wherein azacitidine in Cycle 1 is administrated 1 day prior to the administration of the Bcl-2 inhibitor (designated as Day 0).

11 . The method of claim 10 , wherein azacitidine in Cycle 2 is administrated concurrently with the Bcl-2 inhibitor.

12 . The method of claim 11 , wherein azacitidine is administrated at a dose of 75 mg/m2 intravenously or subcutaneously once daily (QD).

13 . The method of claim 12 , wherein the recommended dose of the Bcl-2 inhibitor is 160 mg once daily (QD).