| 摘要 |
NEW MATERIAL:A compound shown by the formula I (R1 is methyl, ethyl, or isopropyl; R2 amino acid residue which may be protected) and its salt. EXAMPLE:5-O-[N-(2,2,2-Trichloroethoxycarbonyl)glycyl]mylbemycin D. USE:An acaricide. An insecticide. An insect repellent. Having improved activity against sanitary insect pests such as acarids, flies, fleas, cockroaches, etc., nematodes, parasites living in animals and human, etc. PREPARATION:A compound shown by the formula II is directly reacted with an amino acid in the presence of a condensation agent such as dicyclohexylcarbodiimide, etc. in an inert solvent at -10 deg.C - room temperature, to give a compound shown by the formula I .
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