| 摘要 |
The invention concerns a compound of formula (I), wherein: R1 represents an aryl or heteroaryl; R2 represents hydrogen, halogen or a hydroxy; X represents oxygen or sulphur; Y represents oxygen, sulphur or NR wherein R represents hydrogen or an alkyl; A represents CR4R5 or NR4; R3 represents hydrogen, alkyl or cycloalkyl; R4 represents hydrogen or alkyl; or A represents i nitrogen and forms with adjacent -CHR3-the cycle (a) wherein m represents 1, 2, or 3, R3 represents hydrogen or halogen; their l isomers and their addition salts. Said compounds are useful as medicines, as AMPA modulators.
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