This invention provides new compounds of formula I, ##STR1## wherein R.sub.1 is lower alkyl, R.sub.2 is hydrogen or lower alkyl, R.sub.3 is hydrogen or lower alkyl, R.sub.4 is hydrogen or lower alkyl, R.sub.5 is hydrogen, chlorine or lower alkyl, and each of R.sub.6 and R.sub.7 is hydrogen, or, when R.sub.5 is hydrogen, R.sub.6 may also be chlorine or lower alkyl, and R.sub.7 chlorine or lower alkyl, Useful as anti-phlogistic and anti-arthritic agents.
本发明提供了一种新的化合物,其
化学式为I,其中R.sub.1是较低的烷基,R.sub.2是氢或较低的烷基,R.sub.3是氢或较低的烷基,R.sub.4是氢或较低的烷基,R.sub.5是氢、
氯或较低的烷基,而R.sub.6和R.sub.7中的每一个都是氢,或者当R.sub.5为氢时,R.sub.6也可以是
氯或较低的烷基,而R.sub.7是
氯或较低的烷基。这些化合物可用作抗炎和抗关节炎药物。