Substituted azaindole compounds, salts, pharmaceutical compositions thereof and methods of use

1. A compound of Formula (I):

or a racemic mixture, a stereoisomer, a geometric isomer, a tautomer, a solvate, an N-oxide, a metabolite or a pharmaceutically acceptable salt thereof, wherein:

each of X and Y is independently H, —C(═O)R 3 , —C(═O)OR 4 , —C(R 1 R 2 )OC(═O)R 3 , —C(R 1 R 2 )OC(═O)OR 4 or —C(R 1 R 2 )OP(═O)(OR 4 )(OR 4a ), with the proviso that when Y is H, X is not —C(═O)CH 3 or H;

each R 1 and R 2 is independently H, D, C 1-6 alkyl, C 1-6 haloalkyl, C 3-6 cycloalkyl, —(C 1-4 alkylene)-(C 3-6 cycloalkyl), C 3-6 heterocyclyl or —(C 1-4 alkylene)-(C 3-6 heterocyclyl); or R 1 and R 2 , together with the carbon atom they are attached to, form an unsubstituted or substituted 3-8 membered carbocyclic or heterocyclic ring;

each R 3 is independently H, D, C 1-10 haloalkyl, C 3-8 cycloalkyl, —(C 1-6 alkylene)-(C 3-8 cycloalkyl), C 3-8 heterocyclyl, —(C 1-6 alkylene)-(C 3-8 heterocyclyl), C 6-10 aryl, —(C 1-6 alkylene)-(C 6-10 aryl), 5-10 membered heteroaryl or —(C 1-6 alkylene)-(5-10 membered heteroaryl), wherein each of the C 1-10 alkyl, C 1-10 haloalkyl, C 3-8 cycloalkyl, —(C 1-6 alkylene)-(C 3-8 cycloalkyl), C 3-8 heterocyclyl, —(C 1-6 alkylene)-(C 3-8 heterocyclyl), C 6-10 aryl, —(C 1-6 alkylene)-(C 6-10 aryl), 5-10 membered heteroaryl and —(C 1-6 alkylene)-(5-10 membered heteroaryl) is unsubstituted or optionally substituted with 1, 2, 3 or 4 substituents independently selected from D, F, Br, I, C 1-6 alkyl, C 1-6 haloalkyl, OH, NH 2 , C 1-6 alkoxy and C 1-6 alkylamino; and

each R 4 and R 4a is independently H, C 1-10 haloalkyl, C 3-8 cycloalkyl, —(C 1-6 alkylene)-(C 3-8 cycloalkyl), C 3-8 heterocyclyl, —(C 1-6 alkylene)-(C 3-8 heterocyclyl), C 6-10 aryl, —(C 1-6 alkylene)-(C 6-10 aryl), 5-10 membered heteroaryl or —(C 1-6 alkylene)-(5-10 membered heteroaryl), wherein each of the C 1-10 alkyl, C 3-8 cycloalkyl, —(C 1-6 alkylene)-(C 3-8 cycloalkyl), C 3-8 heterocyclyl, —(C 1-6 alkylene)-(C 3-8 heterocyclyl), C 6-10 aryl, —(C 1-6 alkylene)-(C 6-10 aryl), 5-10 membered heteroaryl and —(C 1-6 alkylene)-(5-10 membered heteroaryl) is unsubstituted or optionally substituted with 1, 2, 3 or 4 substituents independently selected from D, F, Cl, OH, NH 2 , oxo (═O), C 1-6 haloalkyl, C 1-6 alkoxy and C 1-6 alkylamino.

2. The compound of claim 1 , wherein each R 1 and R 2 is independently H, D or C 1-3 alkyl.

3. The compound of claim 1 , wherein each R 3 is independently C 1-10 alkyl, C 3-8 cycloalkyl, —(C 1-6 alkylene)-(C 3-8 cycloalkyl), C 3-8 heterocyclyl, —(C 1-6 alkylene)-(C 3-8 heterocyclyl), C 6-10 aryl, —(C 1-6 alkylene)-(C 6-10 aryl), 5-10 membered heteroaryl or —(C 1-6 alkylene)-(5-10 membered heteroaryl), wherein each of the C 1-10 alkyl, C 3-8 cycloalkyl, —(C 1-6 alkylene)-(C 3-8 cycloalkyl), C 3-8 heterocyclyl, —(C 1-6 alkylene)-(C 3-8 heterocyclyl), C 6-10 aryl, —(C 1-6 alkylene)-(C 6-10 aryl), 5-10 membered heteroaryl and —(C 1-6 alkylene)-(5-10 membered heteroaryl) is unsubstituted or optionally substituted with 1, 2, 3 or 4 substituents independently selected from D, F, OH, OMe, NH 2 , NHMe, NMe 2 and C 1-3 alkyl.

4. The compound of claim 1 , wherein each R 4 and R 4a is independently H, C 1-10 alkyl, C 3-8 cycloalkyl, —(C 1-6 alkylene)-(C 3-8 cycloalkyl), C 3-8 heterocyclyl, —(C 1-6 alkylene)-(C 3-8 heterocyclyl) or C 6-10 aryl, wherein each of the C 1-10 alkyl, C 3-8 cycloalkyl, —(C 1-6 alkylene)-(C 3-8 cycloalkyl), C 3-8 heterocyclyl, —(C 1-6 alkylene)-(C 3-8 heterocyclyl) and C 6-10 aryl is unsubstituted or optionally substituted with 1, 2, 3 or 4 substituents independently selected from D, F, OH, OMe, oxo (═O), NH 2 , NHMe, NMe 2 and C 1-3 alkyl.

5. The compound of claim 1 , wherein each of X and Y is independently H or —C(R 1 R 2 )OP(═O)(OH) 2 , with the proviso that when Y is H, X is not H.

6. The compound of claim 1 , wherein each of X and Y is independently H, —C(═O)R 3 , —C(═O)OR 4 , —C(R 1 R 2 )OC(═O)R 3 or —C(R 1 R 2 )OC(═O)OR 4 , with the proviso that when Y is H, X is not —C(═O)CH 3 or H.

7. The compound of claim 6 , wherein the acyl moiety (—C(═O)R 3 ) is derived from an α-amino acid or an optical isomer thereof by removing the OH group from the carboxy group of the α-amino acid.

8. The compound of claim 7 , wherein the α-amino acid is isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, valine, alanine, asparagine, aspartate, glutamate, glutamine, proline, serine, para-tyrosine, arginine, histidine, cysteine, glycine, sarcosine, N,N-dimethyl glycine, homoserine, norvaline, norleucine, ornithine, homocysteine, homophenylalanine, phenylglycine, ortho-tyrosine, meta-tyrosine or hydroxyproline.

9. The compound of claim 8 , wherein the α-amino acid is isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, valine, alanine, asparagine, aspartate, glutamate, glutamine, proline, serine, tyrosine, arginine or histidine, each of which has a S-configuration at the α-position.

10. The compound of claim 1 , wherein the pharmaceutically acceptable salt is an alkali metal salt, an alkaline earth metal salt, or an ammonium or N + (C 1-4 alkyl) 4 salt.

11. The compound of claim 10 , wherein the pharmaceutically acceptable salt is a sodium salt, a lithium salt, a potassium salt, a calcium salt, a magnesium salt, an ammonium salt, a quaternary ammonium salt, or a combination thereof.

12. The compound of claim 1 , wherein the pharmaceutically acceptable salt is a salt of an inorganic acid, an organic acid or a combination thereof, wherein the inorganic acid or the organic acid is hydrochloric acid, hydrobromic acid, sulfuric acid, nitric acid, phosphoric acid, acetic acid, maleic acid, succinic acid, mandelic acid, fumaric acid, malonic acid, malic acid, 2-hydroxypropanic acid, pyruvic acid, oxalic acid, glycolic acid, salicylic acid, glucuronic acid, galacturonic acid, citric acid, tartaric acid, aspartic acid, glutamic acid, benzoic acid, cinnamic acid, p-toluenesulfonic acid, benzenesulfonic acid, mthanesulfonic acid, ethanesulfonic acid, trifluoromthanesulfonic acid or a combination thereof.

13. The compound of claim 1 having one of the following structures:

14. A pharmaceutical composition comprising the compound of claim 1 , and a pharmaceutically acceptable carrier, excipient, diluent, adjuvant, vehicle or a combination thereof.