Spiro aromatic ring compound and use thereof

1. A compound of Formula I:

or a pharmaceutically acceptable salt thereof, or an enantiomer, diastereoisomer, tautomer, solvate, isotope-substituted derivative, polymorph, prodrug or metabolite thereof, wherein:

X 1 and X 2 are independently selected from a bond, O, CR a R b or NR c ;

X 3 is selected from a bond, CR a R b , NR c , S or O;

X 4 is selected from N or CR c ; and R a , R b and R c are independently selected from H, halogen, substituted or unsubstituted C 1-6 alkyl, or substituted or unsubstituted C 1-6 alkoxyl;

R 1 , R 2 , R 3 , R 4 and R 7 are independently selected from H, —OH, halogen, substituted or unsubstituted amino, substituted or unsubstituted C 1-6 alkyl, or substituted or unsubstituted C 1-6 alkoxyl; and R 1 , R 2 , R 3 , R 4 and R 7 cannot be —OH or —NH 2 simultaneously;

ring A is selected from substituted or unsubstituted C 4-8 cyclic hydrocarbyl, substituted or unsubstituted 4 to 8-membered heterocyclyl, substituted or unsubstituted C 5-10 aryl, or substituted or unsubstituted 5 to 10-membered heteroaryl, wherein the heterocyclyl or heteroaryl comprises 1-3 heteroatoms selected from: N, O, S or P;

ring C is selected from substituted or unsubstituted C 4-8 cyclic hydrocarbyl, substituted or unsubstituted 5 to 6-membered monocyclic heterocyclyl, substituted or unsubstituted 8 to 10-membered bicyclic heterocyclyl, substituted or unsubstituted C 5-10 monocyclic or bicyclic aryl, substituted or unsubstituted 5 to 6-membered monocyclic heteroaryl, or substituted or unsubstituted 8 to 10-membered bicyclic heteroaryl, wherein the heterocyclyl or heteroaryl comprises 1-4 heteroatoms selected from: N, O, S or P;

R 5 and R 6 are independently selected from H, —OH, halogen, cyano, substituted or unsubstituted amino, substituted or unsubstituted C 1-6 alkyl, or substituted or unsubstituted C 1-6 alkoxyl;

n is any integer from 0 to 3; and

wherein the term “substituted” refers to one or more hydrogen atoms on the group are substituted by a substituent selected from: halogen, —OH, —NO 2 , —NH 2 , —NH(unsubstituted or halogenated C 1-6 alkyl), —N(unsubstituted or halogenated C 1-6 alkyl) 2 , —CN, unsubstituted or halogenated C 1-8 alkyl, unsubstituted or halogenated C 1-8 alkoxyl, unsubstituted or halogenated C 1-8 alkoxyl-C 1-8 alkyl, unsubstituted or halogenated C 3-8 cycloalkyl-C 1-8 alkyl, unsubstituted or halogenated C 1-6 alkyl carbonyl, unsubstituted or halogenated C 1-6 alkoxyl carbonyl, hydroxamic acid group, unsubstituted or halogenated C 1-6 alkyl thiol, —S(O) 2 N(unsubstituted or halogenated C 1-6 alkyl) 2 , —S(O) 2 unsubstituted or halogenated C 1-6 alkyl, —N(unsubstituted or halogenated C 1-6 alkyl)S(O) 2 N(unsubstituted or halogenated C 1-6 alkyl) 2 , —S(O)N(unsubstituted or halogenated C 1-6 alkyl) 2 , —S(O)(unsubstituted or halogenated C 1-6 alkyl), —N(unsubstituted or halogenated C 1-6 alkyl)S(O)N(unsubstituted or halogenated C 1-6 alkyl) 2 , —N(unsubstituted or halogenated C 1-6 alkyl)S(O)(unsubstituted or halogenated C 1-6 alkyl), unsubstituted or halogenated C 5-10 aryl, unsubstituted or halogenated 5 to 10-membered heteroaryl, unsubstituted or halogenated C 4-8 cyclic hydrocarbyl, or unsubstituted or halogenated 4 to 8-membered heterocyclyl, wherein the heterocyclyl and heteroaryl comprise 1-4 heteroatoms selected from: N, O or S.

2. The compound of Formula I of claim 1 , wherein one of X 1 and X 2 is CH 2 , and the other is a bond.

3. The compound of Formula I of claim 1 , wherein X 3 is S.

4. The compound of Formula I of claim 1 , wherein X 4 is selected from N or CH.

5. The compound of Formula I of claim 1 , wherein R 1 , R 2 , R 3 , R 4 and R 7 are independently selected from H, —OH, —F, —Cl, —Br, —NH 2 , —NHC 1-3 alkyl, methyl, ethyl, propyl, isopropyl, butyl, methoxy, ethoxy, propoxy or isopropoxy; C 1-3 alkyl substituted by halogen, —NH 2 , —OH, C 1-3 alkyl or C 1-3 alkoxyl; or C 1-3 alkoxyl substituted by halogen, —NH 2 , —OH, C 1-3 alkyl or C 1-3 alkoxyl.

6. The compound of Formula I of claim 1 , wherein R 5 and R 6 are independently selected from H, —F, —Cl, —Br, —CN, —NH 2 , —NHC 1-3 alkyl, methyl, ethyl, propyl, isopropyl, butyl, methoxy, ethoxy, propoxy or isopropoxy; C 1-3 alkyl substituted by halogen, —NH 2 , —OH, C 1-3 alkyl or C 1-3 alkoxyl; or C 1-3 alkoxyl substituted by halogen, —NH 2 , —OH, C 1-3 alkyl or C 1-3 alkoxyl.

7. The compound of Formula I of claim 1 , wherein the substituent is selected from —F, —Cl, —Br, —OH, —NO 2 , —NH 2 , —NH(C 1-6 alkyl), —N(C 1-6 alkyl) 2 , —CN, C 1-6 alkyl, C 1-4 alkoxyl, C 1-4 alkoxyl-C 1-6 alkyl, C 3-8 cycloalkyl-C 1-8 alkyl, C 1-6 alkyl carbonyl, C 1-6 alkoxyl carbonyl, C 1-6 alkyl thiol, —S(O) 2 N(C 1-6 alkyl) 2 , —S(O) 2 C 1-6 alkyl, —N(C 1-6 alkyl)S(O) 2 N(C 1-6 alkyl) 2 , —S(O)N(C 1-6 alkyl) 2 , —S(O)(C 1-6 alkyl), —N(C 1-6 alkyl)S(O)N(C 1-6 alkyl) 2 , —N(C 1-6 alkyl)S(O)(C 1-6 alkyl), substituted or unsubstituted C 5-10 aryl, substituted or unsubstituted 5 to 10-membered heteroaryl, substituted or unsubstituted C 4-8 cyclic hydrocarbyl, or substituted or unsubstituted 4 to 8-membered heterocyclyl, wherein the heterocyclyl and heteroaryl comprise 1-4 heteroatoms selected from: N, O or S.

8. The compound of Formula I of claim 7 , wherein the substituent is selected from —F, —Cl, —Br, —OH, —NO 2 , —NH 2 , —NH(C 1-3 alkyl), —N(C 1-3 alkyl) 2 , —CN, C 1-3 alkyl, C 1-3 alkoxyl, C 1-3 alkyl carbonyl, cyclopropyl, cyclobutyl, cyclopentyl, cyclopentenyl, cyclohexyl, cyclohexenyl, cyclohexadienyl, cycloheptyl, cyclooctyl, pyrrolidinyl, morpholinyl, piperazinyl, homopiperazinyl, piperidinyl, thiomorpholinyl, phenyl, naphthyl, anthracyl, phenanthryl, fluorenyl, thiophenyl, imidazolyl, pyrazolyl, thiazolyl, oxazolyl, oxadiazolyl, isoxazolyl, pyridyl, pyrimidinyl, pyrazinyl, pyridazinyl, benzimidazolyl, benzopyrazolyl, indolyl, furanyl, pyrrolyl, triazolyl, tetrazolyl, triazinyl, indolizinyl, isoindolyl, indazolyl, isoindazolyl, purinyl, quinolinyl or isoquinolinyl.

9. The compound of Formula I of claim 8 , wherein the substituent is selected from —F, —Cl, —Br, —OH, —NO 2 , —NH 2 , —NH(C 1-3 alkyl), —N(C 1-3 alkyl) 2 , —CN, methyl, ethyl, propyl, isopropyl, butyl, methoxy, ethoxy, propoxy, isopropoxy or phenyl.

10. The compound of Formula I of claim 9 , wherein the ring C is selected from any of the following groups:

wherein:

X 5 , X 6 , X 7 , X 8 and X 9 are independently selected from N or CR d ; and at most 3 of X 5 , X 6 , X 7 , X 8 and X 9 are N simultaneously;

X 10 , X 11 , X 12 , X 13 , X 14 , X 15 , X 16 and X 17 are independently selected from N or CR d ; and at most 5 of X 10 , X 11 , X 12 , X 13 , X 14 , X 15 , X 16 and X 17 are N simultaneously;

X 18 , X 19 , X 20 and X 21 are independently selected from N or CR d , and at most 3 of X 18 , X 19 , X 20 and X 21 are N simultaneously;

R 6 and R 8 are independently selected from H, —NH 2 , —CN, —OH, —NO 2 , halogen, unsubstituted or halogenated C 1-6 alkyl, or unsubstituted or halogenated C 1-6 alkoxyl; and

R d is selected from H, halogen, unsubstituted or halogenated C 1-6 alkyl, or unsubstituted or halogenated C 1-6 alkoxyl.

11. The compound of Formula I of claim 10 , wherein the ring C is selected from any of the following groups:

wherein:

0, 1 or 2 of X 5 , X 6 , X 7 , X 8 and X 9 are N, and the others are CR d ;

0, 1 or 2 of X 18 , X 19 , X 20 and X 21 are N, and the others are CR d ;

R 6 is selected from H, —NH 2 , —CN, —OH, —NO 2 , —F, —Cl, —Br, methyl, ethyl, propyl, isopropyl, butyl, methoxy, ethoxy, propoxy, isopropoxy, fluorinated or brominated C 1-3 alkyl, fluorinated or brominated C 1-3 alkoxyl; and

R d is selected from H, —F, —Cl, —Br, methyl, ethyl, propyl, isopropyl, butyl, methoxy, ethoxy, propoxy, isopropoxy, fluorinated or brominated C 1-3 alkyl, or fluorinated or brominated C 1-3 alkoxyl.

12. The compound of Formula I of claim 11 , wherein the ring C is selected from any of the following groups:

13. The compound of Formula I of claim 1 , wherein the ring A is selected from substituted or unsubstituted C 4-6 cyclic hydrocarbyl, substituted or unsubstituted 4 to 6-membered heterocyclyl, substituted or unsubstituted C 5-6 aryl, or substituted or unsubstituted 5 to 6-membered heteroaryl, wherein the heterocyclyl or heteroaryl comprises 1-3 N atoms.

14. The compound of Formula I of claim 13 , wherein the ring A is selected from any of the following groups:

15. The compound of Formula I of claim 11 , wherein the ring A is selected from any of the following groups:

16. The compound of Formula I of claim 1 , wherein the compound has a structure selected from:

17. The compound of Formula I of claim 1 , wherein an atom of the isotope comprises but is not limited to hydrogen, carbon, nitrogen, oxygen, fluorine, phosphorus, chlorine or iodine; and preferably is 2 H, 3 H, 11 C, 13 C, 14 C, 15 N, 17 O, 18 O, 18 F, 31 P, 32 P, 35 S, 36 Cl or 125 I.

18. A pharmaceutical composition comprising:

(i) an effective amount of the compound of Formula I of claim 1 or a pharmaceutically acceptable salt thereof, or an enantiomer, diastereoisomer, tautomer, solvate, isotope-substituted derivative, polymorph, prodrug or metabolite thereof; and

(ii) a pharmaceutically acceptable carrier.