Disclosed is an optically active 4-phenylthiazole derivative having a thrombopoietin receptor agonist activity. Also disclosed is a pharmaceutical composition containing such a compound as an active ingredient, which makes an orally administrable platelet production control agent. Specifically disclosed is a pharmaceutical composition containing, as an active ingredient, an optically active compound represented by the formula below, a pharmaceutically acceptable salt thereof, or a solvate of any of them. (In the formula, R1 represents a halogen atom or a C1-C3 alkyloxy group; R2 represents a C1-C8 alkyl group; R3 represents a C1-C8 alkyl group; R4 and R5 independently represent a fluorine atom or a chlorine atom; R6 represents a C1-C3 alkyl group or a C1-C3 alkyloxy group; and * represents an asymmetric carbon atom.)
本发明涉及一种具有血小板生成素受体激动剂活性的光学活性
4-苯基噻唑衍
生物。还公开了一种含有该化合物作为活性成分的制药组合物,其成为一种口服可用的血小板生产控制剂。具体公开了一种制药组合物,其含有下式所表示的光学活性化合物,其药学上可接受的盐或其任何溶剂化物作为活性成分。(在该式中,R1代表卤素原子或C1-C3烷氧基;R2代表C1-C8烷基;R3代表C1-C8烷基;R4和R5独立地代表
氟原子或
氯原子;R6代表C1-C3烷基或C1-C3烷氧基;*代表不对称碳原子。)