申请人:ZENYAKU KOGYO KABUSHIKI KAISHA
公开号:EP0786454A1
公开(公告)日:1997-07-30
Disclosed is a thioquinolone derivative which exhibits highly selective antibacterial activity against Helicobacter pylori and which is represented by the formula I
wherein R1 and R2 respectively represent hydrogen atom or R1 and R2 are joined to form ―O―(CH2)2-;
R3 represents halogen atom, C1-C12 alkyl group, C1-C12 alkoxy group, lower alkylsulfonyloxy group, carboxy lower alkoxy group, lower alkylthio group, benzyloxy group, benzylthio group, phenoxy group, styryl group, nitro group, phenyl group, naphthyl group, piperazinyl group, morpholino group or hydroxyl group or represents ―CH2R5, ―COR6 or ―NR7R8 wherein R5 represents benzyl group, phenyl group, hydroxyl group, lower alkoxy group, lower alkylcarbonyloxy group, phenoxy group, di-lower alkylamino group or benzimidazolylthio group, R6 represents lower alkyl group or amino group and R7 and R8 respectively represent lower alkyl group; and
R4 represents hydrogen atom or lower alkyl group or is coupled with R3 to form cyclohexene ring, benzene ring or pyridine ring,
R3 being not halogen atom at any of positions 5 to 8, methyl group at position 6 or methoxy group at position 6 of the quinoline ring when R1, R2 and R4 are respectively hydrogen atom,
R3 and R4 being not at positions 6 and 7 or positions 6 and 8 of the quinoline ring when R1 and R2 are respectively hydrogen atom and R4 is lower alkyl group.
本发明公开了一种
硫代
喹啉酮衍
生物,它对幽门螺旋杆菌具有高选择性抗菌活性,由式 I 表示
其中 R1 和 R2 分别代表
氢原子或 R1 和 R2 连接形成-O-(
CH2)2-;
R3代表卤素原子、C1-C12烷基、C1-C12烷
氧基、低级烷基磺酰
氧基、低级烷
氧基羧基、低级烷
硫基、苄
氧基、苄
硫基、
苯氧基、
苯乙烯基、硝基、
苯基、
萘基、
哌嗪基、
吗啉基或羟基或代表- R5、-其中 R5 代表
苄基、
苯基、羟基、低级烷
氧基、低级烷基羰
氧基、
苯氧基、二低级烷基
氨基或
苯并咪唑硫基,R6 代表低级烷基或
氨基,R7 和 R8 分别代表低级烷基;和
R4 代表
氢原子或低级烷基,或与 R3 结合形成
环己烯环、
苯环或
吡啶环、
当 R1、R2 和 R4 分别为
氢原子时,R3 不是
喹啉环 5 至 8 位上的卤素原子、6 位上的
甲基或 6 位上的甲
氧基、
当 R1 和 R2 分别为
氢原子和 R4 为低级烷基时,R3 和 R4 不在
喹啉环的第 6 和 7 位或第 6 和 8 位。