申请人:SMITH KLINE & FRENCH LABORATORIES
LIMITED
公开号:EP0115132A1
公开(公告)日:1984-08-08
The present invention provides compounds of formula (2):--
and their pharmaceutically acceptable salts which are useful as histamine H1-antagonists. In formula (2)
R1 is halogen, nitro, amino (or a pharmaceutically acceptable derivative of the amino group which is convertible in vivo into amino) or C1-4 alkyl;
R2 is halogen, nitro, amino (or a pharmaceutically acceptable derivative of the amino group which is convertible in vivo into amino), C1-4 alkyl or C3-4 alkoxy;
R3 is a C1-3 alkylene group; and
R4 is a pyridone group in which the nitrogen atom is optionally substituted with a group R5, where R5 is C1-4 alkyl, hydroxy C1-4 alkyl, C1-4 alkoxy- C1-4-alkyl, or optionally substituted phenyl-C1-4 alkyl; or is a 2- or 4- C1-4 alkoxy pyridyl group.
本发明提供了式 (2): -- 的化合物及其药学上可接受的盐类。
及其药学上可接受的盐类,可用作组胺H1-拮抗剂。式(2)中
R1 是卤素、硝基、氨基(或可在体内转化为氨基的氨基的药学上可接受的衍生物)或 C1-4 烷基;
R2 是卤素、硝基、氨基(或可在体内转化为氨基的氨基的药学上可接受的衍生物)、C1-4 烷基或 C3-4 烷氧基;
R3 是 C1-3 亚烷基;以及
R4 是吡啶酮基团,其中氮原子任选被基团 R5 取代,其中 R5 是 C1-4 烷基、羟基 C1-4 烷基、C1-4 烷氧基-C1-4-烷基或任选取代的苯基-C1-4 烷基;或者是 2- 或 4- C1-4 烷氧基吡啶基。