Nitrogen-containing heterocyclic compound

1. A compound represented by the general formula [1] or a salt thereof:

wherein

R 1 represents an optionally substituted C 1-6 alkyl group;

R 2 represents a hydrogen atom, a halogen atom or an optionally substituted C 1-6 alkyl group;

R 3 represents a halogen atom, an optionally substituted C 1-6 alkyl group, an optionally substituted C 2-6 alkenyl group, an optionally substituted C 3-8 cycloalkyl group, an optionally substituted C 4-8 cycloalkenyl group, an optionally substituted aryl group, an optionally substituted C 1-6 alkoxy group, an optionally substituted C 1-6 alkylamino group, an optionally substituted di(C 1-6 alkyl)amino group or an optionally substituted heterocyclic group;

Z 1 , Z 2 and Z 3 are the same or different and each represent a nitrogen atom or a group represented by the general formula CR 5 wherein R 5 represents a hydrogen atom, a halogen atom or an optionally substituted C 1-6 alkyl group;

X 1 represents

(1) a group represented by the general formula C(═O)N(R 6 ) wherein the carbon atom is bonded to ring A, and R 6 represents a hydrogen atom, an amino-protective group or an optionally substituted C 1-6 alkyl group,

(2) a group represented by the general formula N(R 7 )C(═O) wherein the nitrogen atom is bonded to ring A, and R 7 represents a hydrogen atom, an amino-protective group or an optionally substituted C 1-6 alkyl group; or R 7 represents, together with one substituent R 4 on ring A, an optionally substituted C 2-4 alkylene group, a group represented by the general formula O—Y 1 wherein the oxygen atom is bonded to ring A, and Y 1 represents an optionally substituted C 1-3 alkylene group, a group represented by the general formula S(O) n —Y 2 wherein the sulfur atom is bonded to ring A, Y 2 represents an optionally substituted C 1-3 alkylene group, and n represents an integer of 0 to 2, or a group represented by the general formula N(R 8 )—Y 3 wherein the nitrogen atom is bonded to ring A, Y 3 represents an optionally substituted C 1-3 alkylene group, and R 8 represents a hydrogen atom, an amino-protective group, an optionally substituted C 1-6 alkyl group or an optionally substituted aryl group,

(3) an optionally substituted divalent cyclic hydrocarbon group resulting from the removal of one hydrogen atom from each of two adjacent atoms or

(4) an optionally substituted divalent heterocyclic group resulting from the removal of one hydrogen atom from each of two adjacent atoms;

ring A represents a cyclic hydrocarbon group or a heterocyclic group;

m number of R 4 are the same or different and each represent a halogen atom, a cyano group, a nitro group, an amino-protective group, an optionally substituted C 1-6 alkyl group, an optionally substituted C 2-6 alkenyl group, an optionally substituted C 2-6 alkynyl group, an optionally substituted C 3-8 cycloalkyl group, an optionally substituted C 4-8 cycloalkenyl group, an optionally substituted aryl group, an optionally substituted C 1-6 alkoxy group, an optionally substituted aryloxy group, an optionally substituted C 1-6 alkylamino group, an optionally substituted di(C 1-6 alkyl)amino group, an optionally substituted arylamino group, an optionally substituted carbamoyl group, an optionally substituted sulfamoyl group, an optionally substituted C 1-6 alkylthio group, an optionally substituted arylthio group, an optionally substituted C 1-6 alkylsulfonyl group, an optionally substituted arylsulfonyl group, an optionally substituted heterocyclic group, an optionally protected amino group, an optionally protected hydroxyl group,

an optionally protected carboxyl group,

an optionally substituted C 2-5 alkylene group formed together by two adjacent R 4 ,

an optionally substituted C 2-4 alkylene group formed together by one R 4 and R 7 ,

a group represented by the general formula O—Y 1 formed together by one R 4 and R 7 wherein the oxygen atom is bonded to ring A, and Y 1 represents an optionally substituted C 1-3 alkylene group,

a group represented by the general formula S(O) n —Y 2 formed together by one R 4 and R 7 wherein the sulfur atom is bonded to ring A, Y 2 represents an optionally substituted C 1-3 alkylene group, and n represents an integer of 0 to 2, or

a group represented by the general formula N(R 8 )—Y 3 formed together by one R 4 and R 7 wherein the nitrogen atom is bonded to ring A, Y 3 represents an optionally substituted C 1-3 alkylene group, and R 8 represents a hydrogen atom, an amino-protective group, an optionally substituted C 1-6 alkyl group or an optionally substituted aryl group; and

m represents an integer of 0 to 5.

2. The compound according to claim 1 or a salt thereof, wherein

R 2 is a hydrogen atom or an optionally substituted C 1-6 alkyl group; and

each of Z 1 , Z 2 and Z 3 is CH.

3. The compound according to claim 1 or a salt thereof, wherein

R 1 is a C 1-3 alkyl group, and

R 3 is an optionally substituted C 1-6 alkyl group, an optionally substituted C 3-8 cycloalkyl group,

an optionally substituted aryl group or an optionally substituted heterocyclic group.

4. The compound according to claim 1 or a salt thereof, wherein ring A is a cyclic hydrocarbon group.

5. The compound according to claim 1 or a salt thereof, wherein X 1 is a group represented by the general formula C(═O)N(R 6 ) wherein the carbon atom is bonded to ring A, and R 6 represents a hydrogen atom, an amino-protective group or an optionally substituted C 1-6 alkyl group.

6. The compound according to claim 1 or a salt thereof, wherein

X 1 is a group represented by the general formula C(═O)N(R 6a ) wherein the carbon atom is bonded to ring A, and R 6a represents a hydrogen atom or an optionally substituted C 1-3 alkyl group;

m number of R 4 are the same or different and each are a halogen atom, an optionally substituted C 1-3 alkyl group, an optionally substituted C 1-3 alkylamino group or an optionally protected amino group; and

m is an integer of 0 to 2.

7. The compound according to claim 1 or a salt thereof, wherein

R 3 is an optionally substituted C 1-6 alkyl group, an optionally substituted C 3-8 cycloalkyl group or an optionally substituted heterocyclic group;

X 1 is a group represented by the general formula C(═O)N(R 6b ) wherein the carbon atom is bonded to ring A, and R 6b represents an optionally substituted C 1-3 alkyl group;

m number of R 4 are the same or different and each are a halogen atom or an optionally substituted C 1-3 alkyl group; and

m is an integer of 0 to 2.

8. The compound according to claim 7 or a salt thereof, wherein

m number of R 4 are the same or different and each are a halogen atom; and

m is an integer of 0 to 2.

9. The compound according to claim 1 or a salt thereof, wherein

X 1 is a group represented by the general formula N(R 7 )C(═O) wherein the nitrogen atom is bonded to ring A, and R 7 represents a hydrogen atom, an amino-protective group or an optionally substituted C 1-6 alkyl group; or R 7 represents, together with one substituent R 4 on ring A, an optionally substituted C 2-4 alkylene group, a group represented by the general formula O—Y 1 wherein the oxygen atom is bonded to ring A, and Y 1 represents an optionally substituted C 1-3 alkylene group, a group represented by the general formula S(O) n —Y 2 wherein the sulfur atom is bonded to ring A, Y 2 represents an optionally substituted C 1-3 alkylene group, and n represents an integer of 0 to 2, or a group represented by the general formula N(R 8 )—Y 3 wherein the nitrogen atom is bonded to ring A, Y 3 represents an optionally substituted C 1-3 alkylene group, and R 8 represents a hydrogen atom, an amino-protective group, an optionally substituted C 1-6 alkyl group or an optionally substituted aryl group.

10. The compound according to claim 1 or a salt thereof, wherein

R 3 is an optionally substituted C 1-6 alkyl group, an optionally substituted C 3-8 cycloalkyl group or an optionally substituted heterocyclic group;

X 1 is a group represented by the general formula N(R 7a )C(═O) wherein the nitrogen atom is bonded to ring A, and R 7a represents an optionally substituted C 1-3 alkyl group, or R 7a represents, together with one substituent R 4 on ring A, an optionally substituted C 2-3 alkylene group or a group represented by the general formula O—Y 1a wherein the oxygen atom is bonded to ring A, and Y 1a represents an ethylene group;

m number of R 4 are the same or different and each are a halogen atom, an optionally substituted C 1-3 alkyl group, an optionally substituted C 1-3 alkylsulfonyl group,

an optionally substituted C 2-3 alkylene group formed together by two adjacent R 4 ,

an optionally substituted C 2-3 alkylene group formed together by one R 4 and R 7a , or

a group represented by the general formula O—Y 1a formed together by one R 4 and R 7a wherein the oxygen atom is bonded to ring A, and Y 1a represents an ethylene group; and

m is an integer of 0 to 2.

11. The compound according to claim 1 or a salt thereof, wherein

R 3 is an optionally substituted heterocyclic group;

X 1 is a group represented by the general formula N(R 7b )C(═O) wherein the nitrogen atom is bonded to ring A, and R 7b represents an optionally substituted C 1-3 alkyl group, or R 7b represents, together with one substituent R 4 on ring A, an optionally substituted C 2-3 alkylene group;

m number of R 4 are the same or different and each are an optionally substituted C 1-3 alkyl group,

an optionally substituted C 2-3 alkylene group formed together by two adjacent R 4 , or

an optionally substituted C 2-3 alkylene group formed together by one R 4 and R 7b ; and

m is an integer of 0 to 2.

12. The compound according to claim 11 or a salt thereof, wherein

X 1 is a group represented by the general formula N(R 7b )C(═O) wherein the nitrogen atom is bonded to ring A, and R 7b represents an optionally substituted C 1-3 alkyl group, or R 7b represents, together with one substituent R 4 on ring A, an optionally substituted C 2-3 alkylene group;

m number of R 4 are the same or different and each are an optionally substituted C 1-3 alkyl group, or

an optionally substituted C 2-3 alkylene group formed together by one R 4 and R 7b ; and

m is an integer of 0 to 2.

13. The compound according to claim 1 or a salt thereof, wherein X 1 is an optionally substituted divalent cyclic hydrocarbon group resulting from the removal of one hydrogen atom from each of two adjacent atoms or an optionally substituted divalent heterocyclic group resulting from the removal of one hydrogen atom from each of two adjacent atoms.

14. The compound according to claim 1 or a salt thereof, wherein

R 3 is an optionally substituted C 1-6 alkyl group or an optionally substituted heterocyclic group;

X 1 is an optionally substituted divalent cyclic hydrocarbon group resulting from the removal of one hydrogen atom from each of two adjacent atoms or an optionally substituted divalent heterocyclic group resulting from the removal of one hydrogen atom from each of two adjacent atoms;

m number of R 4 are the same or different and each are a halogen atom; and

m is an integer of 0 to 2.

15. The compound according to claim 14 or a salt thereof, wherein

R 3 is an optionally substituted heterocyclic group; and

X 1 is an optionally substituted divalent heterocyclic group resulting from the removal of one hydrogen atom from each of two adjacent atoms.

16. A pharmaceutical composition comprising a compound according to claim 1 or a salt thereof.

17. An agent for treatment of an immune disease, comprising a compound according to claim 1 or a salt thereof.