Novel heterocyclic compounds

A compound represented by the following formula (I):

• wherein
• Q is a hydrogen atom or is represented by any of the following formulas (II-1) to (II-8):
• R1 is a hydrogen atom, optionally substituted alkyl, optionally substituted cycloalkyl, optionally substituted heterocycloalkyl, optionally substituted aryl, optionally substituted heteroaryl, optionally substituted arylalkyl, optionally substituted heteroarylalkyl, optionally substituted cycloalkylalkyl, optionally substituted heterocycloalkylalkyl, or —(CO)—R1a;
• R1a is optionally substituted alkyl, optionally substituted alkoxy, optionally substituted aryl, or optionally substituted heteroaryl;
• R1b is a hydrogen atom, or 1 to 3 same or different alkyls;
• Q1a is a single bond, optionally substituted alkylene;
• Q1b is a hydrogen atom, hydroxy, halogen, cyano,-Q1c, —COQ1c, —CONQ1cQ1d, CONQ1c—OQ1d, —NQ1cQ1d, or —OQ1c;
• Q1c is a hydrogen atom, optionally substituted alkyl, optionally substituted cycloalkyl, optionally substituted heterocycloalkyl, optionally substituted aryl, optionally substituted heteroaryl;
• Q1d is a hydrogen atom or optionally substituted alkyl;
• Q2a is optionally substituted cycloalkylene;
• Q2b and Q2c are the same or different and each is a hydrogen atom or optionally substituted alkyl;
• U is —CO— or —CH2—;
• R2 is a hydrogen atom, optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkynyl, optionally substituted arylalkyl, optionally substituted heteroarylalkyl, optionally substituted cycloalkylalkyl, or —X—N(R2a)(R2b);
• X is an alkylene group;
• R2a and R2b are the same or different and each is a hydrogen atom, optionally substituted alkyl, optionally substituted cycloalkyl, optionally substituted heterocycloalkyl, optionally substituted aryl, optionally substituted heteroaryl, optionally substituted arylalkyl, optionally substituted heteroarylalkyl, or optionally substituted cycloalkylalkyl;
• V is an optionally substituted aryl ring, an optionally substituted heteroaryl ring, an optionally substituted partially saturated heteroaryl ring, or an optionally substituted heterocycloalkyl ring;
• R3 is a hydrogen atom, hydroxy, halogen, cyano, optionally substituted alkyl, optionally substituted cycloalkyl, optionally substituted heterocycloalkyl, optionally substituted aryl, optionally substituted heteroaryl, —C≡C—R3a or —COOR3b;
• R3a is a hydrogen atom, optionally substituted alkyl, optionally substituted cycloalkyl, optionally substituted heterocycloalkyl, or optionally substituted heteroaryl,
• R3b is a hydrogen atom or optionally substituted alkyl,
• is represented by any of the following formulas (III-1) to (III-4):
• R4 is a hydrogen atom, optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkynyl, optionally substituted arylalkyl, optionally substituted heteroarylalkyl, optionally substituted cycloalkylalkyl, or optionally substituted heterocycloalkylalkyl, and
• Ar2 is an optionally substituted aryl ring or an optionally substituted heteroaryl ring;
• and
• R5 is a hydrogen atom, or optionally substituted alkyl;
• and
• R6 and R7 are the same or different and each is a hydrogen atom or halogen,
• or a pharmaceutically acceptable salt thereof.