| 摘要 |
Compounds represented by the general formula (I); and drugs (including anti-inflammatory drugs, drugs for autoimmune diseases, immunosuppressants, antiseptic drugs, and so on), containing the compounds as the active ingredient, wherein R<1> and R<3> are each C1-20 alkanoyl which may be substituted with one or more members selected from group A of substituents, or the like; R<2> and R<4> are each C1-20 alkyl which may be substituted with one or more members selected from group A of substituents, C1-20 alkanoyl which may be substituted with one or more members selected from group A of substituents, or the like; and R<5> is hydrogen, halogeno, hydroxyl, C1-6 alkoxy, or the like, group A of substituents consisting of halogeno, hydroxyl, oxo, C1-20 alkoxy, C1-20 alkanoyloxy and so on. |
