摘要 |
The present invention provides an Aurora inhibitor which comprises, as an active ingredient, an indazole derivative represented by Formula (I) (wherein R1 represents substituted or unsubstituted aryl or a substituted or unsubstituted heterocyclic group) or a pharmaceutically acceptable salt thereof, an Aurora inhibitor which comprises, as an active ingredient, an indazole derivative represented by Formula (Ia) [wherein R2 represents CONR4aR4b (wherein R4a and R4b may be the same or different and each represents a hydrogen atom, substituted or unsubstituted lower alkyl, or the like, or R4a and R4b are combined together with the adjacent nitrogen atom thereto to form a substituted or unsubstituted heterocyclic group) or the like, and R3 represents a hydrogen atom, substituted or unsubstituted lower alkyl, or the like] or a pharmaceutically acceptable salt thereof, and the like.
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