申请人:Shionogi & Co., Ltd.
公开号:US04840953A1
公开(公告)日:1989-06-20
9-(Substituted thio)-4H-pyrido[1,2-a]pyrimidin-4-one derivatives of the formula: ##STR1## wherein n is 0 or 1, R is --COR.sup.1, --CONR.sup.4 R.sup.5 or --CH.sub.2 R.sup.6, R.sup.1 is C.sub.1 -C.sub.5 alkyl, C.sub.3 -C.sub.7 cycloalkyl, allythio, styryl, phenoxymethyl, thienylmethyl, C.sub.6 -C.sub.10 aryl optionally substituted, benzyl optionally substituted or 5- or 6-membered heterocyclic group optionally substituted, R.sup.2 and R.sup.3 each is hydrogen, C.sub.1 -C.sub.5 alkyl, carboxy, C.sub.2 -C.sub.5 alkoxycarbonyl or benzyloxycarbonyl optionally substituted, R.sup.4 and R.sup.5 each is hydrogen, C.sub.1 -C.sub.5 alkyl, C.sub.3 -C.sub.7 cycloalkyl or phenyl optionally substituted, and R.sup.8 is pyridyl or phenyl optionally substituted) being useful as antiulcer agents are provided through several routes.
式为:##STR1##其中n为0或1,R为--COR.sup.1,--CONR.sup.4R.sup.5或--CH.sub.2R.sup.6,R.sup.1为C.sub.1-C.sub.5烷基,C.sub.3-C.sub.7环烷基,烯基硫,苯乙烯基,苯氧甲基,噻吩甲基,C.sub.6-C.sub.10芳基(可选择性取代),苄基(可选择性取代)或5-或6-成员杂环基(可选择性取代),R.sup.2和R.sup.3分别为氢,C.sub.1-C.sub.5烷基,羧基,C.sub.2-C.sub.5烷氧羰基或苄氧羰基(可选择性取代),R.sup.4和R.sup.5分别为氢,C.sub.1-C.sub.5烷基,C.sub.3-C.sub.7环烷基或苯基(可选择性取代),R.sup.8为吡啶基或苯基(可选择性取代)的9-(硫代取代)-4H-吡啶并[1,2-a]嘧啶-4-酮衍生物作为抗溃疡药物通过几种途径提供。