| abstract |
A compound of ** formula ** in which: X represents O or S; Y1 represents N or CR2; and when R1 represents OH, Y1 can also, in the tautomeric form, represent NR6; Y2 represents CR3; and when Y1 represents CR2, then Y2 can also represent N; R1 represents H or C1 to 6 alkyl; said alkyl being optionally substituted with one or more substituents independently selected from halogen, CN, CHO, OR7, NR8R9, S (O) mR10 and SO2NR11R12; and, when Y1 represents N, R1 can also represent OH; R7 represents H, C1 to 6 alkyl or phenyl; said phenyl being optionally further substituted with halogen, C1 to 6 alkyl and C1 to 6 alkoxy; R2 represents H, halogen or C1 to 6 alkyl; R3 represents H or F; G1 represents phenyl or a five or six membered heteroaromatic ring containing 1 to 3 heteroatoms independently selected from O, S and N; or G1 represents a saturated or partially unsaturated five or six membered cycloalkyl ring; or G1 represents a saturated or partially unsaturated five or six membered heterocyclic ring containing a heteroatom selected from O, S and NR13, where R13 represents H or C1 to 6 alkyl; R5 represents H, halogen, C1 to 6 alkyl, CN, C1 to 6 alkoxy, NO2, NR14R15, C1 to 3 alkyl substituted with one or more F atoms or C1 to 3 alkoxy substituted with one or more F atoms. |