| 摘要 |
A compound having 5-HT<SUB>1A </SUB>receptor activity, represented by the chemical formula wherein: Ar is 2-methoxyphenyl, 1H-indol-4-yl or 2,3-dihydro-1,4-benzodioxin-5-yl; R<SUB>1 </SUB>is 2-, 3- or 4-pyridyl; R<SUB>2 </SUB>is H or C<SUB>1-6</SUB>alkyl; R<SUB>3 </SUB>is H or C<SUB>1-6</SUB>alkyl; and R<SUB>4 </SUB>is H or methyl, or an optical isomer thereof, or a pharmaceutically acceptable salt of such a compound or optical isomer. The invention also includes compositions containing such a compound, as well as methods for using a compound of the invention.
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