The invention relates to new pyridine-pyrimidinone derivatives corresponding to the following general formula ##STR1## wherein R.sup.1 represents linear C.sub.1-6 alkyl or cycloalkyl and R.sup.2 represents linear C.sub.1-6 alkyl or R.sup.1 and R.sup.2 together with the nitrogen atom form a pyrrolidine or piperidine ring; Alk represents a linear alkylene chain C.sub.1-6 ; Q represents a benzene ring, furan ring, thiophene ring or thiazole ring; X represents oxygen, Y is a single bond and m is 2, 3 or 4 when Q represents benzene; X represents methylene, Y represents sulfur and m is 2 or 3 when Q is furan, thiophene or thiazole; and R.sup.3 represents a hydrogen atom or a lower alkyl group. These compounds show improved H.sub.2 -antagonistic activity.
该发明涉及与以下一般式相对应的新
吡啶-
嘧啶酮衍
生物 ##STR1## 其中R.sup.1代表线性C.sub.1-6烷基或环烷基,R.sup.2代表线性C.sub.1-6烷基或R.sup.1和R.sup.2与氮原子一起形成
吡咯烷或
哌嗪环;Alk代表线性烷基链C.sub.1-6;Q代表苯环、
呋喃环、
噻吩环或
噻唑环;X代表氧,Y是单键,当Q代表苯时,m为2、3或4;X代表亚甲基,Y代表
硫,当Q为
呋喃、
噻吩或
噻唑时,m为2或3;R.sup.3代表氢原子或低烷基基团。这些化合物显示出改善的H.sub.2-拮抗活性。