| abstract |
Compound of formula I: ** Formula ** in which: R1 is selected from C2-6 alkyl, C3-8 cycloalkyl optionally substituted with 1 or 2 fluorine atoms, C2-6 alkenyl and C3-6 alkynyl, R2 to R6 are independently selected from hydrogen, halo, C1-6alkyl, -CF3, -O-C1-6alkyl, -CN, -C (O) -C1-6alkyl, -S-C1-6alkyl, C3 cycloalkyl -8 and -NO2; or R4 and R5 together form -CH> = CH-CH> = CH-, provided that, in the case that R1 is ethyl, R2 is fluorine, R4 is chlorine, R5 is hydrogen and R6 is hydrogen, R3 it is not fluorine or chlorine, or a pharmaceutically acceptable salt thereof. |