| 摘要 |
The invention relates to compounds of general formula (I). <IMAGE> (I) in which X represents an atom of sulfur or oxygen, or a substituted or unsubstituted amino group; R represents a hydrogen atom or any one of groups A, B, C, D, E, F, or G; R' represents a hydrogen atom, an alkyl group or any one of groups A, B, C, D, E or F, with R'=H when R=G; or R and R' form, with the nitrogen atom to which they are attached, an optionally substituted piperazine ring. Medicaments.
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