| abstract |
The present invention relates to a compound represented by the following formula (I), which is useful as an antiallergic agent and/or an anti-inflammatory agent, or a physiologically acceptable salt thereof and the like: n n n n n n n n n n wherein R 1 and R 2 are the same or different and each is an optionally substituted aryl group and the like, R 3 is a hydrogen atom, a C 1-6 alkyl group and the like, R 4 and R 5 are the same or different and each is a hydrogen atom, a halogen atom, a hydroxy group, a C 1-6 alkyl group and the like, X is a single bond or —C(R 6 )(R 7 )—, R 6 and R 7 are the same or different and each is a hydrogen atom, a halogen atom, an optionally substituted C 1-6 alkyl group and the like, or R 6 and R 7 optionally form, together with the carbon atom bonded thereto, an optionally substituted C 3-8 cycloalkyl group and the like, ring group A is an azetidin-1-yl group and the like, m is 0, 1 or 2, and n is 0, 1 or 2. |