Imidazo[1,2-b]pyridazine derivatives as kinase inhibitors

A compound represented by the general formula (I) or a pharmacologically acceptable salt thereof:

• wherein
• R1 represents a hydrogen atom, a C1-C6 alkyl group, a fluoro-C1-C6 alkyl group, or a hydroxy-C1-C6 alkyl group;
• Q represents an oxygen atom or RaN, wherein
• Ra represents a hydrogen atom or a C1-C6 alkyl group;
• G is represented by the following formula (IV):
• wherein
• U represents a nitrogen atom or CH;
• R7 represents a hydrogen atom or a C1-C6 alkyl group;
• and
• R8 represents a hydrogen atom, a C1-C6 alkyl group, or a halogen atom, or
• is represented by Ga to Ge:
• T represents a nitrogen atom or CRb, wherein
• Rb represents a hydrogen atom, a halogen atom, a C1-C6 alkyl group, a C1-C6 alkoxy group, or a cyano group;
• Y1 and Y2 each independently represents a hydrogen atom, a halogen atom, a C1-C6 alkyl group, a C1-C6 alkoxy group, or a cyano group;
• Y3 represents a hydrogen atom;
• and
• Y4 is represented by —O-M2, formula (V), Ya, or Yb
• wherein
• M2 is any of the following M2a to M21:
• formula (V) is
• wherein
• n represents 1 or 2;
• and
• R21 and R31 each independently represents a hydrogen atom, an amino group, a C1-C6 alkyl group, an amino-C1-C6 alkyl group, or a C1-C6 alkylamino group;
• and
• Ya and Yb are