The present invention addresses the problem of providing a compound having an anti-inflammatory activity or a pharmacologically acceptable salt thereof. The solution according to the present invention is a compound represented by general formula (1) or a pharmacologically acceptable salt thereof. [In the formula, symbols are defined as follows: R1: a C1-C6 alkyl group or the like； R2: a C1-C6 alkyl group； A: an oxygen atom or the like； and R3: a C1-C6 alkyl group or the like.]
