| abstract |
A compound of formula (I) wherein Q is an optionally substituted carbon atom or N(O)p wherein p is 0 or 1; Y is an optionally substituted methylene group, S(O)q wherein q is an integer of 0 to 2, or an optionally substituted imino group; Z1 is a C¿1-3? alkylene group which may have an oxo group or a thioxo group and may contain etherified oxygen or sulfur within the carbon chain; Z?2¿ is an optionally substituted C¿1-3? alkylene group; Ar is an optionally substituted carbocyclic group or an optionally substituted heterocyclic group; one of R?1 and R2¿ is a hydrogen atom, a halogen atom, a hydroxyl group, an optionally substituted lower alkyl group, or an optionally substituted lower alkoxy group; the other is a halogen atom, a hydroxyl group, an optionally substituted lower alkyl group, or an optionally substituted lower alkoxy group; or R?1 and R2¿ taken together with adjacent -c=c- form a ring; and ring A is a benzene ring which may be substituted in addition to R?1 and R2¿; or a salt thereof. |