| abstract |
There are described new anthelmintics that have a compound of formula I as an active ingredient or in their hydrogenated form of the formula Ia wherein R₁ and R₂ are independently C₁-C₆ alkyl, allyl, C₃-C₆ cycloalkyl or phenyl; and R₃ represents unsubstituted or mono- or polysubstituted phenyl, biphenylyl or phenoxyphenyl; their substituents are selected from the group halogen, cyano, C₁-C₃-alkyl, C₁-C₃-haloalkyl, C₁-C₃-alkoxy, C₁-C₃-haloalkoxy, C₁-C₃-cyanoalkyl, nitro, amino or by C₁-C₃ -Alkoxycarbonyl substituted C₁-C₃-alkyl, including their tautomeric forms and physiologically acceptable salts, contain. The manufacture, formulation and use of these active ingredients are also described. |