abstract |
There are disclosed compounds having the formula (I) and (II): <IMAGE> (I) <IMAGE> (II) wherein: R' and R'', equal to or different from each other, are a C1-C7 alkyl, a C3-C7 cycloalkyl, a heterocycloalkyl, alkoxyalkyl, dialkoxyalkyl, haloalkyl; X is a halogen, a C1-C4 alkyl, a haloalkyl, alkoxyl, phenyl; and Y is H or a halogen. |