| abstract |
he present invention relates to the use of didepsipeptides of the formula 1 for the control of endoparasites where: R1 is H, straight chain or branched alkyl, cycloalkyl, arylalkyl, aryl, heteroaryl, heteroarylalkyl, each of which is optionally substituted R1 and R2 together with the atoms to which they are bonded represent a 5-or 6-membered ring which can be optionally substituted by O, S, sulphoxyl or sulphonyl and is optionally substituted, R2 and R3 independently of one another represent H, straight chain or branched alkyl, cycloalkyl, arylalkyl, aryl, heteroaryl, heteroarylalkyl, alkenyl, cycloalkylalkyl, each of which is optionally substituted or R2 and R3 together is a spirocyclic ring optionally substituted, R4 and R5 independently of one another represent H, straight chain or branched alkyl, cycloalkyl, arylalkyl, aryl, heteroaryl, heteroarylalkyl, alkenyl, cycloalkylalkyl, each of which is optionally substituted or R4 and R5 together is a spirocyclic ring optionally substituted A is H, alkyl, aralkyl, formyl, alkoxydicarbonyl or a radical G1 where the substituents are disclosed in the specification. |