| 摘要 |
Compounds of formula (I) and salts thereof:Wherein R<1 >represents methyl, ethyl, isopropyl or s-butyl; and R<2 >represents hydrogen or alkyl. R<3 >represents hydrogen, optionally substituted alkanoyl, optionally substituted alkenoyl, optionally substituted alkynoyl, alkylsulfonyl, or alkoxycarbonyl, or R<2 >and R<3 >together with the nitrogen atom to which they are attached form a saturated, optionally substituted 4- to 6-membered heterocyclic ring group. The moiety -a- together with the carbon atom to which it is attached forms a 3- to 6-membered cycloalkyl group. These compounds have anthelmintic, acaricidal and insecticidal activity. |
