Heterocyclic compounds and cerebral function improvers containing the same as the active ingredient
申请人:Zenyaku Kogyo Kabushiki Kaisha
公开号:US07767824B2
公开(公告)日:2010-08-03
Heterocyclic compound represented by the formula I
wherein
represents
or the like; R1 represents hydrogen atom, C1-C6 alkyl or benzyloxy; R2 represents methyl or nil; R3 represents hydrogen atom, C1-C6 alkyl, C2-C6 alkenyl, C3-C8 cycloalkyl or —CH2R5 [wherein R5 represents phenyl (which may be substituted with C1-C6 alkyl, halogen atom or cyano)] or thienyl; R4 represents C1-C6 alkyl, C2-C6 alkenyl, C3-C8 cycloalkyl or —CH2R6 [wherein R6 represents phenyl (which may be substituted with C1-C6alkyl, halogen atom or cyano), naphtyl or thienyl]; or R3 is coupled with R4.
公式I所代表的杂环化合物,其中:
- X代表氧、硫或类似物;
- R1代表氢原子、C1-C6烷基或苯甲氧基;
- R2代表甲基或零;
- R3代表氢原子、C1-C6烷基、C2-C6烯基、C3-C8环烷基或—CH2R5 [其中R5代表苯基(可以被C1-C6烷基、卤素原子或氰基取代)]或噻吩基;
- R4代表C1-C6烷基、C2-C6烯基、C3-C8环烷基或—CH2R6 [其中R6代表苯基(可以被C1-C6烷基、卤素原子或氰基取代)、萘基或噻吩基];或者R3与R4偶联。