| abstract |
Antiparasitic avermectin derivatives of formula (I), where the broken line represents an optional bond, R1 and R4 are independently H, OH, halo, oximino, or an organic radical, R2, R6 and R7 are organic radicals and R3 is alpha-oleandrosyl or 4'-(alpha-oleandrosyl)-alpha-oleandrosyl optionally substituted at the 4'- or 4''-position, and R12 and R13 are independently H, CN, CONH2, C1-C8 alkyl or aryl optionally substituted with at least one halo, OH, C1-C8 alkylthio group. |