| 摘要 |
A compound represented by the general formula: where X is a hydrogen atom, a nitro group, a trifluoromethyl group, a fluorine atom, a chlorine atom, a bromine atom or an iodine atom, A is a 1,3-propylene or 1,4-butylene group which is unsubstituted or substituted by at least one alkyl group having 1 to 3 carbon atoms, R is where R3 is a mono- or diphenyl lower alkyl group, and Y is an alkylene group having 2 to 6 carbon atoms, and Me is a methyl group, or its pharmaceutically acceptable salt.
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