申请人:Synthelabo
公开号:US04806560A1
公开(公告)日:1989-02-21
Imidazo[4,5-b]pyridin-2-one derivatives of the formula (I) ##STR1## in which n is 2, 3 or 4, x is .dbd.CH-- or .dbd.N--, R.sub.1 and R.sub.2, which may be the same or different, each represent hydrogen, halogen or (C.sub.1-4) alkoxy and either R.sub.3 is H or OH and R.sub.4 is H, or R.sub.3 and R.sub.4 together form a direct bond, their enantiomers and their addition salts with pharmaceutically acceptable acids are pharmacologically active, for example as antagonists to histamine and serotonin.
式(I)中的Imidazo [4,5-b] pyridin-2-one衍生物 ##STR1##
其中n为2、3或4,x为.dbd.CH--或.dbd.N--,R.sub.1和R.sub.2可以相同也可以不同,分别代表氢、卤素或(C.sub.1-4)烷氧基,而R.sub.3为H或OH,R.sub.4为H,或者R.sub.3和R.sub.4共同形成一个直接键,它们的对映异构体及其与药学上可接受的酸的加成盐具有药理活性,例如作为组胺和血清素的拮抗剂。