An object of the present invention is to provide a compound having an anti-inflammatory activity or a pharmacologically acceptable salt thereof. The solution of the present invention is a compound of general formula (1) or a pharmacologically acceptable salt thereof. wherein the symbols in the formula are defined below: R 1 : e.g., a C1-C6 alkyl group； R 2 : a C1-C6 alkyl group； A: e.g., an oxygen atom； and R 3 : e.g., a C1-C6 alkyl group.
