Compounds having the formula ##STR1## and the pharmaceutically acceptable salts thereof, wherein R.sub.1 is alkylamino, dialkylamino or a nitrogen containing heterocyclic group; R.sub.2 and R.sub.3 are the same or different and are hydrogen, chloro, fluoro, alkyl, alkoxy or trifluoromethyl; R.sub.4 is hydrogen, alkyl, 2,2,2-trifluoroethyl, 2-hydroxyethyl, arylalkyl, or alkanoyl; and n is 1, 2 or 3; have useful anti-inflammatory activity.
具有以下式子的化合物和其药学上可接受的盐,其中R.sub.1是烷基
氨基,二烷基
氨基或含氮杂环基团;R.sub.2和R.sub.3相同或不同,可以是氢,
氯,
氟,烷基,烷氧基或三
氟甲基;R.sub.4是氢,烷基,
2,2,2-三氟乙基,2-羟基乙基,芳基烷基或脂肪酰基;n为1、2或3。这些化合物具有有用的抗炎活性。