abstract |
Oxime derivatives of 5-didehydromilbemycins A 3 , A 4 and D are represented by the formula: ##STR1## (wherein R 1 represents methyl, ethyl or isopropyl, and R 2 represents hydrogen, lower alkyl, optionally substituted aralkyl or --CH 2 COOR 3 , wherein R 3 represents hydrogen or lower alkyl). These and their salts and esters have valuable anthelmintic, acaricidal and insecticidal activity. |