申请人:Takeda Pharmaceutical Company Limited
公开号:EP1923388A1
公开(公告)日:2008-05-21
A compound represented by the formula (I) or a salt thereof; and an agent for protecting a brain/neuronal cell or a therapeutic agent for sleep disorder comprising the compound or salt: wherein Z represents an oxygen or sulfur; R1 represents an aryl or heterocyclic group which may be substituted, provided that R1 is not a 3-ethyl-6-methoxy-2-methyl-5-naphthalen-1-yl group; R1a represents a hydrogen atom, a hydrocarbon group which may be substituted, a hydroxyl group or the like; R2 represents a piperidin-1,4-diyl or piperazin-1,4-diyl which may be substituted; R3 represents a bivalent group which is formed by removing two hydrogen atoms from a benzene ring or 6-membered aromatic heterocyclic ring which may have a substituent, provided that R3 is not a pyridazin-3,6-diyl; and R4 represents a group which is formed by removing one hydrogen atom from a benzene ring or 5- to 6-membered heterocyclic ring which may be substituted, provided that the substituent on the heterocyclic ring is not a phenylethyl group which may be substituted when Z is sulfur.
由式(I)代表的化合物或其盐,以及包含该化合物或盐的保护脑/神经细胞的制剂或治疗睡眠障碍的制剂:其中 Z 代表氧或硫;R1 代表可被取代的芳基或杂环基,条件是 R1 不是 3-乙基-6-甲氧基-2-甲基-5-萘-1-基;R1a 代表氢原子、可被取代的烃基、羟基或类似基团;R2 代表可被取代的哌啶-1,4-二基或哌嗪-1,4-二基;R3 代表二价基团,该基团由苯环或 6 元芳香杂环去掉两个氢原子形成,可具有取代基,但 R3 不是哒嗪-3,6-二基;R4 代表基团,该基团由苯环或 5 至 6 元杂环去掉一个氢原子形成,可被取代,但杂环上的取代基不是苯乙基,当 Z 为硫时,苯乙基可被取代。