Kowa Company Limited

Akiyasu Koketsu

Hiroyuki Ishiwata

Takahiro Kitamura

Takeshi Doi

Junya Tagashira

Toshiharu Morimoto

Gen Watanabe

Masanori Ashikawa

Tatsuaki Nishiyama

Satoshi Goda

Syunji Takemura

Masaki Yamabi

Disclosed is a compound which has a low molecular weight and has an activity of enhancing the production of EPO and/or an activity of enhancing the production of hemoglobin. Specifically disclosed is and EPO production enhancer and/or a hemoglobin production enhancer comprising a 1-acyl-4-(substituted oxy, substituted amino, or substituted thio)-1,2,3,4-tetrahydroquinoline derivative, more specifically a tetrahydroquinoline compound represented by general formula (1) [wherein R, R, R, Rand Rindependently represent a hydrogen atom, a Calkyl group, or the like; R, R, R, R, R, Rand Rindependently represent a hydrogen atom, a halogen atom, a Calkyl group, or the like; A represents N&#x2014;R, a sulfur atom, or an oxygen atom; Rrepresents a hydrogen atom, a Calkyl group, or the like; B represents a Caryl group, or a 5- to 10-membered heterocyclic group; and n represents an integer of 0 or 1], a salt of the tetrahydroquinoline compound, or a solvate of the tetrahydroquinoline compound or the salt.

Prophylactic and/or therapeutic agent for anemia comprising tetrahydroquinoline compound as active ingredient

Disclosed is a compound which has a low molecular weight and has an activity of enhancing the production of EPO and/or an activity of enhancing the production of hemoglobin. Specifically disclosed is and EPO production enhancer and/or a hemoglobin production enhancer comprising a 1-acyl-4-(substituted oxy, substituted amino, or substituted thio)-1,2,3,4-tetrahydroquinoline derivative, more specifically a tetrahydroquinoline compound represented by general formula (1) [wherein R, R, R, Rand R' independently represent a hydrogen atom, a Calkyl group, or the like; R, R, R, R, R, Rand Rindependently represent a hydrogen atom, a halogen atom, a Calkyl group, or the like; A represents N&#x2014;R, a sulfur atom, or an oxygen atom; Rrepresents a hydrogen atom, a Calkyl group, or the like; B represents a Caryl group, or a 5- to 10-membered heterocyclic group; and n represents an integer of 0 or 1], a salt of the tetrahydroquinoline compound, or a solvate of the tetrahydroquinoline compound or the salt.

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Higashimurayama, Japan

Akiyasu Koketsu