As antiulcer agents, a series of 1-oxo-1H-6-substituted pyrimido[1,2-a]quinoline-2-carboxylic acids and esters of the formula ##STR1## wherein R.sub.1 is alkoxy having from one to two carbon atoms or piperidino; and R.sub.2 is hydrogen or alkyl having from one to four carbon atoms; the pharmaceutically acceptable acid addition salts of those compounds wherein R.sub.1 is piperidino, and the pharmaceutically acceptable cationic salts of those compounds wherein R.sub.2 is hydrogen.
作为抗溃疡剂,一系列1-氧代-1H-6-取代
嘧啶并[1,2-a]
喹啉-2-
羧酸和酯的分子式为##STR1##其中R.sub.1是具有一到两个碳原子的烷氧基或
哌啶基; R.sub.2是氢或具有一到四个碳原子的烷基;其中R.sub.1为
哌啶基的化合物的药物可接受的酸加成盐,以及其中R.sub.2为氢的化合物的药物可接受的阳离子盐。