A preventive, therapeutic or improving agent for diseases against which activation of the thrombopoietin receptor is effective or a platelet increasing agent, which contains a thrombopoietin receptor activator represented by the formula (1): wherein A is a C?2-14#191 aryl group, B is a hydrogen atom, a C?1-6#191 alkyl group, a C?1-3#191 alkyl group substituted with one or more fluorine atoms or a C?2-14#191 aryl group, D is a hydrogen atom, a C?1-6#191 alkyl group, a C?1-3#191 alkyl group substituted with one or more fluorine atoms or a C?2-14#191 aryl group, and E is a C?2-14#191 aryl group, a tautomer, prodrug or pharmaceutically acceptable salt of the activator or a solvate thereof, as an active ingredient.
一种预防、治疗或改善疾病的药物,其对激活血小板生成素受体有效,或者一种增加血小板数量的药物,其中包含由式(1)表示的血小板生成素受体激活剂:其中A是C?2-14#191芳基基团,B是氢原子、C?1-6#191烷基、C?1-3#191烷基,其上取代有一个或多个
氟原子,或C?2-14#191芳基基团,D是氢原子、C?1-6#191烷基、C?1-3#191烷基,其上取代有一个或多个
氟原子,或C?2-14#191芳基基团,E是C?2-14#191芳基基团、互变异构体、前药或其药学上可接受的盐或其溶剂化物,作为活性成分。