Avermectin derivatives

Details Avermectin derivatives Avermectin derivatives

C - Chemistry, Metallurgy

07

D

167/202, 260/228

C07D 493/22 (2006.01) A01N 43/90 (2006.01) A61K 31/70 (2006.01) C07H 19/01 (2006.01)

Patent

CA 2018097

14/DLR15 17877 TITLE OF THE INVENTION AVERMECTIN DERIVATIVES ABSTRACT OF THE DISCLOSURE There are disclosed novel avermectin derivatives wherein the outer oleandrose ring of avermectin or avermectin monosaccharide is homologated by addition of diazomethane to 4"- or 4'-oxo-avermectin to afford the oleandrose 4"- or 4'-spiro-epoxide. The homologated avermectins can then be further derivatized to afford additional novel avermectins. The new compounds are potent antiparasitic agents, in particular, the compounds are anthelmintic, insecticidal and acaricidal agents.

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