申请人:SMITH KLINE & FRENCH LABORATORIES
LIMITED
公开号:EP0112707A2
公开(公告)日:1984-07-04
The present invention provides compounds of formula (1):
and pharmaceutically acceptable acid addition salts thererof where
R1 is 2- or 3-pyridyl optionally bearing one or two substituents which are the same or different and which are C1-4 alkyl, C1-4 alkoxy, halogen, nitro, cyano or trifluoromethyl;
a is 2 to 4; and
R2 is phenyl optionally bearing one or two substituents which are the same or different and are halogen, hydroxy, C1-4 alkyl or C1-4 alkoxy or a methylenedioxy group or is 3-pyridyl;
N-oxo-3-pyridyl; 6-methyl-3-pyridyl; N-oxo-6-methyl-3-pyridyl; 6-hydroxymethyl-3-pyridyl; 4,6-dimethyl-3-pyridyl; N-oxo-4,6-dimethyl-3-pyridyl; 6-hydroxymethyl-4-methyl-3--pyridyl; 5,6-dimethyl-3-pyridyl; N-oxo-5,6-dimethyl-3-pyridyl; 6-hydroxymethyl-5-methyl-3-pyridyl; 4-pyridyl or N--oxo-4-pyridyl.
These compounds are useful as histamine H1-antagonists.
本发明提供了式(1)化合物:
及其药学上可接受的酸加成盐,其中
R1 是 2-或 3-吡啶基,任选带有一个或两个相同或不同的取代基,这些取代基是 C1-4 烷基、C1-4 烷氧基、卤素、硝基、氰基或三氟甲基;
a 是 2 至 4;以及
R2 是苯基,可选择带有一个或两个相同或不同的取代基,它们是卤素、羟基、C1-4 烷基或 C1-4 烷氧基或亚甲基二氧基,或者是 3-吡啶基;
N-氧代-3-吡啶基;6-甲基-3-吡啶基;N-氧代-6-甲基-3-吡啶基;6-羟甲基-3-吡啶基;4,6-二甲基-3-吡啶基;N-氧代-4,6-二甲基-3-吡啶基;6-羟甲基-4-甲基-3-吡啶基;5,6-二甲基-3-吡啶基;N-氧代-5,6-二甲基-3-吡啶基;6-羟甲基-5-甲基-3-吡啶基;4-吡啶基或 N-氧代-4-吡啶基。
这些化合物可用作组胺 H1 拮抗剂。