The invention relates to novel cyclopenteno[b]pyridine derivatives which have a group X on the 7-position and related tricyclic compounds. X is CONHR.sup.3, or CO.sub.2 R.sup.5 wherein R.sup.3 is hydrogen or lower alkyl and R.sup.5 is hydrogen or a lower alkyl or lower aralkyl group which may be substituted by alkyl, alkoxy, halogen, nitro or trifluoromethyl; other substituents may be present. The compounds are intermediates for compounds wherein X is CSNHR.sup.3 which are anti-ulcer agents.
该发明涉及具有7-位上的X基团的新型
环戊烯基
吡啶衍生物及相关的
三环化合物。X为CONHR.sup.3,或CO.sub.2R.sup.5,其中R.sup.3为氢或较低的烷基,R.sup.5为氢或较低的烷基或较低的芳基烷基,可能被烷基、烷氧基、卤素、硝基或三
氟甲基取代;其他取代基可能存在。这些化合物是X为CSNHR.sup.3的化合物的中间体,这些化合物是抗溃疡药物。