yloxy-C-M-alkyl, C3-7-cycloalkyloxy-C1-4-alkyl>C3-7-cycloalkyl-C1-4-alkyloxy-C1-4-alkyl, hydroxy-C1-6-alkyl, C1-4-fluoroalkyl group; R3 is a hydrogen atom or a substituent selected from halogen atoms and the C1-3 alkyl, ???NR4R5, hydroxyl or C1-4 alkyloxy groups; A is a C1-7-alkylene group...