申请人:SMITH KLINE & FRENCH LABORATORIES
LIMITED
公开号:EP0200450A2
公开(公告)日:1986-12-10
The invention provides a compound of formula - (1):-
and pharmaceutically acceptable salts thereof, where X' is oxygen; sulphur; -NR2-(where R2 is hydrogen, C1-6alkyl or C1-6alkanoyl); -CNR3-; -CH2CHR3-; -O-CHR3-; or -S-CHR3 -(where R3 is hydrogen or C1-6 alkyl);
X3 and X4 are the same or different and represent a fused benzo or pyrido ring, each ring being optionally substituted with C1-6alkyl, C1-6alkoxy or halogen;
b is from 2 to 5;
r is 1 or 2; and
R' is hydrogen, C 1-6alkyl or a group -CH2R5 and R5 is pyridyl optionally bearing one or two substituents which are the same or different and are C1-6alkyl, C1-6alkoxy, halogen or hydroxy; or is phenyl or pyridyl bearing a carboxy, carboxamido, sulphonamido or hydroxy-C 1-6alkyl group and optionally bearing a C1-6alkyl C1-6alkoxy, hydroxy or halogen substituent; or is N-oxo-pyridyl optionally bearing a C1-6alkyl, C1-6alkoxy, or halogen substituent.
The compounds are useful as histamine H1- antagonists.
本发明提供了一种式-(1):- 的化合物。
及其药学上可接受的盐,其中X'是氧;硫;-NR2-(其中R2是氢、C1-6烷基或C1-6烷酰基);-CNR3-;-CH2CHR3-;-O-CHR3-;或-S-CHR3-(其中R3是氢或C1-6烷基);
X3 和 X4 相同或不同,代表融合的苯偶氮环或吡啶环,每个环可任选被 C1-6 烷基、C1-6 烷氧基或卤素取代;
b 是 2 至 5
r 是 1 或 2;以及
R' 是氢、C 1-6 烷基或基团-CH2R5,R5 是吡啶基,可选择带有一个或两个相同或不同的 C1-6 烷基、C1-6烷氧基、卤素或羟基取代基;或者是苯基或吡啶基,带有羧基、羧酰胺基、磺酰胺基或羟基-C 1-6 烷基,并可选择带有 C1-6 烷基、C1-6烷氧基、羟基或卤素取代基;或者是 N-氧代吡啶基,可选择带有 C1-6 烷基、C1-6烷氧基或卤素取代基。
这些化合物可用作组胺 H1 拮抗剂。