摘要 |
Certain compounds of formula (I), or a pharmaceutically acceptable salt or solvate thereof, wherein R<SUP>1</SUP>, R<SUP>2</SUP>, R<SUP>3</SUP>, P, X, Y, q, r ans s are as defined in the specification, a process for preparing such compounds, a pharmaceutical composition comprising such compounds and the use of such compounds in medicine.
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