The invention relates to pyrimido 1,2-b!isoquinolines of the formula ##STR1## and their pharmaceutically acceptable acid addition salts. In the formula, R.sup.1 and R.sup.2 each represent hydrogen, hydroxyl, lower alkyl, lower alkoxy, trifluoromethyl, halogen, amino or mono- or di-(lower)alkylamino and R.sup.3 and R.sup.4 each represent hydrogen or lower alkyl. The compounds have utility as anti-gastric ulcer agents.
该发明涉及式为##STR1##的
嘧啶并1,2-b!
异喹啉及其药用可接受的酸盐。在该式中,R.sup.1和R.sup.2分别代表氢、羟基、较低烷基、较低烷氧基、三
氟甲基、卤素、
氨基或单或双-(较低)烷基
氨基,R.sup.3和R.sup.4分别代表氢或较低烷基。这些化合物可用作抗胃溃疡药剂。