| 摘要 |
<p>Compounds represented by general formula (I), salts of the same, or prodrugs of both, which exhibit antiallergic, antihistaminic, eosinotaxis-inhibitory, anti-inflammatory and anti-PAF effects, and so on, and are therefore useful as preventive and therapeutic agents for asthma or the like, wherein A is a ring represented by general formula (a) or (b) (wherein R?1a and R1b¿ are each hydrogen or the like); Ar?1 and Ar2¿ are each an optionally substituted aromatic group, or alternatively Ar?1 and Ar2¿ together with the carbon atom adjacent to them may form a fused ring; B is a piperidine ring, a piperazine ring, or the like; X and Y are each oxygen, a divalent linear lower hydrocarbon group which may be interrupted by one to three heteroatoms, or the like; R?2 and R3¿ are each hydrogen or the like; and R7 is hydrogen or the like.</p> |
