This invention provides new compounds of formula I, ##STR1## wherein R.sub.1 is hydrogen, halogen of atomic number from 9 to 35 or lower alkyl, R.sub.2 is hydrogen or lower alkyl, each of R.sub.3 and R.sub.4 is hydrogen, or R.sub.3 and R.sub.4 together are oxygen, n is 2, 3 or 4, and A is ethylene or vinylene, Useful as antiphlogistics and anti-arthritics.
                            该发明提供了公式I的新化合物,其中R.sub.1是氢,原子序数为9到35的卤素或较低的烷基,R.sub.2是氢或较低的烷基,R.sub.3和R.sub.4中的每一个是氢,或者R.sub.3和R.sub.4一起是氧,n为2、3或4,A是
乙烯或
乙烯基,可用作抗炎和抗关节炎药物。