The present invention relates to novel 4-oxo-4H-pyrido[1,2-a]pyrimidine -3-carbonamide 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## wherein: 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 repesents 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.
本发明涉及一种新的4-
氧代-4H-
吡啶并[1,2-a]
嘧啶-3-羰胺衍
生物,其通式为(I),以及其酸盐,含有它们的药物组合物和其制备方法。在通式(I)中:其中:R代表一个C.sub.1-12烷基基团,该基团可选择地被C.sub.1-4烷
氧羰基基团取代;C.sub.3-9
环烷基、
脱氢脂环基或可选择地取代的
苯基;R.sup.1代表
氢或C.sub.1-4烷基基团;或R和R.sup.1一起形成一个--(CH.sub.2).sub.n--链,其中n为4、5或6;R.sup.2代表
氢、C.sub.1-4烷基基团或卤素;R.sup.3代表
氢或C.sub.1-4烷基基团;m为0或1。通式(I)的化合物具有胃保护作用,对预防和治疗胃和小肠溃疡有用。