申请人:SMITH KLINE & FRENCH LABORATORIES
LIMITED
公开号:EP0112704A2
公开(公告)日:1984-07-04
The present invention provides compounds of formula (1):
and their pharmaceutically acceptable salts which are useful as histamine Hi-antagonists. In formula (1),
R1 and R2 are the same or different and are hydrogen, C1-6 alkyl, C1-6 alkoxy or halogen;
R3 is optionally substituted phenyl or optionally substituted
pyridyl, where the optional substituents are one or more C1-6 alkyl, C1-6 alkoxy, or hydroxy groups or halogen atoms; or optionally substituted thiazolyl, optionally substituted furanyl or optionally substituted thienyl where the optional substituents are one or more C1-6 alkyl or C1-6 alkoxy groups or halogen atoms;
a is from 1 to 6
b is from 2 to 4
and R4 is a group of formula (2):
or a group of formula (3):
or a group of formula (4):
or a group of formula (5):
where R5 is hydrogen, C1-6 alkyl, or (CH2)dR6 where d is 1-6 and R6 is optionally substituted phenyl, optionally substituted pyridyl, where the optional substituent is one or more C1-6 alkyl, C1-6 alkoxy or hydroxy groups or halogen atoms; optionally substituted thiazolyl, optionally substituted furanyl or optionally substituted thienyl, where the optional substituents are one or more C1-6 alkyl or C1-6 alkoxy groups or halogen atoms; and r is 0 to 2.
本发明提供了可用作组胺拮抗剂的式 (1):
及其药学上可接受的盐类,可用作组胺拮抗剂。式(1)中
R1 和 R2 相同或不同,并且是氢、C1-6 烷基、C1-6 烷氧基或卤素;
R3 是任选取代的苯基或任选取代的吡啶基。
吡啶基,其中任选取代基为一个或多个 C1-6 烷基、C1-6 烷氧基或羟基或卤素原子;或任选取代的噻唑基、任选取代的呋喃基或任选取代的噻吩基,其中任选取代基为一个或多个 C1-6 烷基或 C1-6 烷氧基或卤素原子;
a 是 1 至 6
b为2至4
和 R4 是式 (2) 的基团:
或式(3)的基团
或式(4)的基团
或式(5)的基团:
其中 R5 是氢、C1-6 烷基或 (CH2)dR6,其中 d 是 1-6,R6 是任选取代的苯基、任选取代的吡啶基,其中任选取代基是一个或多个 C1-6 烷基、C1-6 烷氧基或羟基或卤素原子;任选取代的噻唑基、任选取代的呋喃基或任选取代的噻吩基,其中任选取代基是一个或多个 C1-6 烷基或 C1-6 烷氧基或卤素原子;以及 r 是 0 至 2。