| 摘要 |
3-Formylimidazopyridine derivatives (I and I') and/or 5-thia-1,8b-diazaacenaphthylene derivatives (III), which are useful as intermediates for producing a fused imidazopyridine derivatives being useful for prophylaxis and/or treatment of hyperlipemia, as shown, can be produced easily and efficiently in a high yield. In formula (1), rings Q, Q' and Q'' are optionally substituted pyridine rings, R<1> is hydrogen, a halogen atom, an optionally substituted hydroxyl, an optionally substituted hydrocarbon residue or an acyl group, R<2> is an optionally substituted carboxyl, and X is a leaving group. |
