摘要：

A compound of formula (I) or a pharmaceutically acceptable salt thereof, or a pharmaceutically acceptable solvate thereof, wherein, R0 represents a substituted or unsubstituted aryl group; R1 represents hydrogen or an alkyl group; R2 represents a moiety of formula (a) wherein R?4 and R5 each independently represent hydrogen, alkyl, phenyl, hydroxyalkyl or cycloalkyl and R3 represents hydrogen, halogen, alkyl or alkoxy; a process for preparing such a compound, a pharmaceutical composition containing such a compound and the use of such a compound in medicine.

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