9-(Substituted thio)-4H-pyrido[1,2-a]pyrimidin-4-one derivatives of the formula:
wherein n is 0 or 1, R is -COR1, -CONR4R5 or -CH2R6, R1 is C1-C5alkyl, C3-C7cycloalkyl, allylthio, styryl, phenoxymethyl, thienylmethyl, C6-C10 aryl optionally substituted, benzyl optionally substituted or 5- or 6-membered heterocyclic group optionally substituted, R2 and R3 each is hydrogen, Cl-C5 alkyl, carboxy, C2-C5 alkoxycarbonyl or benzyloxycarbonyl optionally substituted, R4 and R5 each is hydrogen, Cl-C5 alkyl, C3-C7 cycloalkyl or phenyl optionally substituted, and R6 is pyridyl or phenyl optionally substituted are useful as antiulcer agents and may be provided by several routes.
9-(取代的
硫代)-4H-
吡啶并[1,2-a]
嘧啶-4-酮衍
生物,其式如下
其中 n 为 0 或 1,R 为 -COR1、-CONR4R5 或 -CH2R6,R1 为 C1-C5 烷基、C3-C7 环烷基、烯丙基
硫代、
苯乙烯基、苯氧基甲基、
噻吩基甲基、任选取代的 C6-C10 芳基、任选取代的苄基或任选取代的 5 或 6 元杂环基团,R2 和 R3 各为氢、Cl-C5烷基、羧基、C2-C5烷氧基羰基或任选取代的苄氧基羰基,R4和R5各自为氢、Cl-C5烷基、C3-C7环烷基或任选取代的苯基,R6为任选取代的
吡啶基或苯基,这些都是有用的抗溃疡剂,可通过多种途径提供。