Azaindole derivative having PGD2 receptor antagonistic activity

A compound of the general formula (II):

• wherein the ring C is a formula of
• the formula of —X1═X2—X3═X4— is a formula of v—C(R1)═C(R2)—C(R3)═N—;
• R1, R2, R3 and R5 are independently a hydrogen atom, halogen atom, optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkynyl, optionally substituted cycloalkyl, optionally substituted cycloalkenyl, hydroxy, optionally substituted alkyloxy, optionally substituted alkenyloxy, optionally substituted alkynyloxy, optionally substituted cycloalkyloxy, optionally substituted cycloalkenyloxy, mercapto, optionally substituted alkylthio, optionally substituted alkenylthio, optionally substituted alkynylthio, optionally substituted alkylsulfonyl, optionally substituted alkylsulfonyl, optionally substituted alkylsulfonyloxy, optionally substituted cycloalkylthio, optionally substituted cycloalkylsulfinyl, optionally substituted cycloalkylsulfonyl, optionally substituted cycloalkylsulfonyloxy, optionally substituted cycloalkenylthio, optionally substituted cycloalkenylsulfinyl, optionally substituted cycloalkenylsulfonyl, optionally substituted cycloalkenylsulfonyloxy, optionally substituted amino, acyl, optionally substituted alkyloxycarbonyl, optionally substituted alkenyloxycarbonyl, optionally substituted alkynyloxycarbonyl, optionally substituted carbamoyl, optionally substituted sulfamoyl, cyano, nitro, optionally substituted aryl, optionally substituted aryloxy, optionally substituted arylthio, optionally substituted arylsulfonyl, optionally substituted arylsulfonyl, optionally substituted arylsulfonyloxy, optionally substituted heteroaryl, optionally substituted heteroaryloxy, optionally substituted heteroarylthio, optionally substituted heteroarylsulfinyl, optionally substituted heteroarylsulfonyl, optionally substituted heteroarylsulfonyloxy, or optionally substituted non-aromatic heterocyclic group;
• R12 is optionally substituted C1-C6 alkyloxy, optionally substituted C2-C6 alkenyloxy, optionally substituted C2-C6 alkynyloxy, optionally substituted C1-C6 alkylthio, optionally substituted C2-C6 alkenylthio, optionally substituted C2-C6 alkynylthio, optionally substituted C3-C6 cycloalkyloxy, optionally substituted C3-C6 cycloalkylthio, optionally substituted aryloxy or optionally substituted arylthio;
• R13 is independently a halogen atom, optionally substituted alkyl, optionally substituted cycloalkyl, optionally substituted amino, acyl, optionally substituted alkyloxycarbonyl, optionally substituted carbamoyl, optionally substituted sulfamoyl, cyano, nitro, optionally substituted aryl, optionally substituted arylsulfonyloxy, optionally substituted heteroaryl or optionally substituted non-aromatic heterocyclic group;
• R14 is independently optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkynyl, oxo, optionally substituted aryl, optionally substituted heteroaryl, or optionally substituted non-aromatic heterocyclic group;
• M is carbonyl or sulfoyl;
• Y and L4 are independently a single bond or optionally substituted alkylene optionally containing one or two heteroatom(s);
• Z is CH, C(R13) or N;
• n is 0, 1 or 2;
• and
• q is 0, 1, 2or 3;
• or a pharmaceutically acceptable salt thereof.