Patent ID: 6936621

Claim:
A compound of formula (I′) in which R′ 1 is halogen, a CF 3 , (C 1 -C 4 ) alkyl or (C 1 -C 4 ) alkoxy group; R′ 2 is phenyl, phenoxy, phenylmethyl or phenylethyl, said groups optionally mono- or polysubstituted on the phenyl group by halogen, CF 3 , (C 1 -C 4 ) alkyl or (C 1 -C 4 ) alkoxy; R′ 3 is hydrogen, (C 1 -C 6 ) alkyl, (C 1 -C 6 ) alkoxy, halogen, a CF 3 group or hydroxy; or a salt or quaternary ammonium salt thereof.