| abstract |
The present invention provides a compound which enhances the production of erythropoietin. The present invention provides a compound represented by formula (1): (see formula 1) [wherein, R1: formula (1A): (see formula 1A) [wherein, R4 and R5: H, halogen, or alkyl; R6: H, halogen, alkyl, or the like; R7: substitutable hydroxyalkyl, substitutable hydroxyhalo alkyl, substitutable alkoxyalkyl, or the like; substituent group .alpha.: oxo, hydroxy, amino, or the like; ring Q1: a monocyclic heterocyclic group; ring Q2: a monocyclic hydrocarbon ring group, or a monocyclic heterocyclic group; ring Q3: a monocyclic hydrocarbon ring group, or a monocyclic heterocyclic group; X: a single bond, methylene, ethylene, or the like]; R2: alkyl, or methylsulfanyl; and R3: H, or methyl], or the like. |