The subject of the present invention is to provide a compound capable of promoting the production of erythropoietin.The solution of the present invention is to provide a compound represented by general formula (1) and the like.[In general formula (1), R1 represents -Q1, -Q1-X-Q2 and -Q1-X-Q2-Y-Q3 Q1 represents a monocyclic or bicyclic aromatic heterocyclic group Q2 and Q3 represent an aromatic hydrocarbon ring group and a monocyclic aromatic heterocyclic group X represents -CONH-, -CONHCH2-, -CH2OCH2-, -NHCH2CH2- and the like Y represents a single bond, -O-, -(CH2)n- and -O-(CH2)n- m and n represent an integer of 1 to 3 R2 represents a hydrogen atom and an alkyl group R3 represents a hydrogen atom, an alkoxycarbonyl group, a carboxyl group, an aromatic hydrocarbon ring group and a monocyclic aromatic heterocyclic group.]本發明之課題在於提供一種增強紅血球生成素產生之化合物。本發明之解決手段在於提供一種以式(1)所表示之化合物等,[在通式(1)中,R1:-Q1、-Q1-X-Q2、-Q1-X-Q2-Y-Q3;Q1:單環或雙環式的芳香族雜環基;Q2、Q3:芳香族烴環基、單環的芳香族雜環基;X:-CONH-、-CONHCH2-、-CH2OCH2-、-NHCH2CH2-等;Y為單鍵、-O-、-(CH2)n-、-O-(CH2)n-;m、n:1至3的整數;R2:H、烷基;R3:H、烷氧基羰基、羧基、芳香族烴環基、單環的芳香族雜環基]。
