The present invention relates to novel 4-oxo-4H-pyrido[1,2-a]pyrimidine-3-carboxamide derivatives of the general formula (I) and the acid addition salts thereof, pharmaceutical compositions containing them and a process for their preparation. In the general formula (I) ##STR1## R stands for a C.sub.1-12 alkyl group optionally substituted by a C.sub.1-4 alkoxycarbonyl group; a C.sub.3-9 cycloalkyl, adamantyl or optionally substituted phenyl group; R.sup.1 means hydrogen or a C.sub.1-4 alkyl group; or R and R.sup.1 together form a --(CH.sub.2).sub.n -- chain, wherein n is 4, 5 or 6; R.sup.2 stands for hydrogen, a C.sub.1-4 alkyl group or halogen; R.sup.3 represents hydrogen or a C.sub.1-4 alkyl group; and m is 0 or 1. The compounds of the general formula (I) possess a gastroprotective effect and are useful for the prevention and therapy of ulcers of the stomach and the small intestine.
本发明涉及一种新型的4-氧代-4H-
吡啶[1,2-a]
嘧啶-3-羧酰胺衍
生物及其酸盐,药物组合物以及它们的制备方法。在通式(I)中,R代表C.sub.1-12烷基,可选地被C.sub.1-4烷氧羰基基团取代;C.sub.3-9环烷基,
金刚烷基或可选地被取代的苯基基团;R.sup.1代表氢或C.sub.1-4烷基;或R和R.sup.1一起形成--(CH.sub.2).sub.n--链,其中n为4、5或6;R.sup.2代表氢,C.sub.1-4烷基或卤素;R.sup.3代表氢或C.sub.1-4烷基;m为0或1。通式(I)化合物具有胃黏膜保护作用,可用于预防和治疗胃和小肠溃疡。