13-Substituted milbemycin derivatives having the formula (I): ##STR1## wherein: R.sup.1 is methyl, ethyl, isopropyl or sec-butyl; R.sup.2 is hydrogen or alkyl; X is (.alpha.-hydroxyimino- or .alpha.-alkoxyimino-substituted)-arylmethyl or (.alpha.-hydroxyimino- or .alpha.-alkoxyimino-substituted)-heterocyclylmethyl, N-substituted-aminophenyl or N-substituted-aminophenoxy; m is 0 or 1; and n is 0 or 1; are valuable as agricultural and horticultural anthelmintic, acaricidal and insecticidal agents.
具有以下式子(I)的13-取代的米氏菌素衍
生物:##STR1## 其中:R.sup.1为甲基、乙基、异丙基或仲丁基;R.sup.2为氢或烷基;X为(α-羟
肟基或α-烷氧
肟基取代的)芳基甲基或(α-羟
肟基或α-烷氧
肟基取代的)杂环基甲基、N-取代
氨基苯基或N-取代
氨基苯氧基;m为0或1;n为0或1;作为农业和园艺驱虫剂、
杀螨剂和
杀虫剂具有价值。