| abstract |
The present invention relates to compounds represented by the following general formula ( 1 ): n n n wherein A is a phenyl, naphthyl, dihydronaphthyl, indenyl, pyridyl, indolyl, isoindolyl, quinolyl or isoquinolyl group which may be substituted; X is a lower alkylene group which may be substituted, or the like; Y is a single bond or an alkylene group; Z is a group of —CH═CH—, —C≡C—, —(CH═CH) 2 -, —C≡C—CH═CH— or —CH═CH—C≡C—, or the like; and R is a hydrogen atom, a lower alkyl group or the like, and medicines comprising such a compound. These compounds have an excellent inhibitory effect on the production of an IgE antibody and are hence useful as antiallergic agents and the like. |