| 摘要 |
To provide novel imidazopyridine derivatives having an excellent antitumor activity, compounds represented by the following general formula (1) or pharmacologically acceptable salts thereof are provided, wherein R<1> represents substituted phenyl, a substituted heterocycle, etc.; R<2> represents hydrogen, aliphatic acyl, etc.; R<3>, R<4>, R<5>, R<6>, R<7> and R<8> represent each hydrogen, alkyl, halogeno, etc.; and X<1> represents O, S, etc. |
