5-Oxime derivatives of milbemycins and veterinary and agricultural use thereof

摘要

Oxime derivatives of 5-didehydromilbemycins A3, A4 and D are represented by the formula: <IMAGE> (wherein R1 represents methyl, ethyl or isopropyl, and R2 represents hydrogen, lower alkyl, optionally substituted aralkyl or -CH2COOR3, wherein R3 represents hydrogen or lower alkyl). These and their salts and esters have valuable anthelmintic, acaricidal and insecticidal activity.