| abstract |
Compounds of the formula <IMAGE> wherein R1 is perfluoroalkyl of 1 to 8 carbon atoms or 2,2,3,3-tetrafluoro-cyclobutyl, R2 and R4, which may be identical to or different from each other, are each hydrogen, alkyl of 1 to 10 carbon atoms, aliphatic acyl of 2 to 18 carbon atoms, benzoyl, salicyloyl or phenylacetyl, and R3 and R5, which may be identical to or different from each other, are each alkyl of 3 to 18 carbon atoms, halogen, nitro, p-toluenesulfonyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclododecyl, methylcyclohexyl, dimethylcyclohexyl, benzyl, methylthio or <IMAGE> where R1, R2 and R4 have the meanings previously defined, Q is -CH2- or -S-, and G is R5, as above defined, or Q is R3, as above defined, and G is -CH2- or -S-, R3 may, in addition, also be hydroxyl, methoxy, methyl or cyano, and R5 may also be methyl, or one of substituents R3 and R5 is hydrogen or ethyl when the other has the meanings defined above except hydrogen, or when R1 has the meanings defined above except trifluoromethyl, or when R2 and R4 have the meanings defined above except hydrogen or methyl. The compounds are useful as active ingredients in pharmaceutical, cosmetic and pesticidal compositions. |