Compounds having the formula ##STR1## wherein X is oxygen or sulfur; R.sub.1 is alkyl, cycloalkyl or aryl; R.sub.2 is a nitrogen containing heterocyclic group; A.sub.1 is a saturated bond or an alkylene group having 1 to 4 carbon atoms; and A.sub.2 is an alkylene group having 2 to 5 carbon atoms; have antiinflammatory activity.
具有以下分子式的化合物 ##STR1## 其中X是氧或
硫;R.sub.1是烷基、环烷基或芳基;R.sub.2是含氮杂环基团;A.sub.1是饱和键或含有1到4个碳原子的烷基基团;A.sub.2是含有2到5个碳原子的烷基基团;具有抗炎活性。