| abstract |
A compound of formula (I) below, which exhibits excellent macrophage activity inhibitory action, is useful for the treatment or prophylaxis of inflammatory disorders, autoimmune diseases or septicemia. In a preferred embodiment, R 1 and R 3 each represents a C 1 -C 20 alkanoyl group which may optionally be substituted with one or more substituent groups selected from substituent group A, R 2 and R 4 each represents a C 1 -C 20 alkyl group which may optionally be substituted with one or more substituent groups selected from substituent group A, R 5 is a hydrogen atom, a halogen atom, a hydroxy group, or a C 1 -C 6 alkoxy group, and substituent group A is a halogen atom, a hydroxy group, an oxo group, a C 1 -C 20 alkoxy group, or a C 1 -C 20 alkanoyloxy group. |