A - Human Necessities – 01 – N
Patent
A - Human Necessities
01
N
260/210, 260/233
A01N 43/90 (2006.01) A01N 55/00 (2006.01) C07H 19/01 (2006.01)
Patent
CA 1257586
Novel lactones for controlling pests of animals and plants Abstract of the Disclosure Milbemycin derivatives of the formula I Image (I) wherein A has the structure Image [=.DELTA.14,29-15-ol] or the structure Image [=14-hydroxy-.DELTA.15,16], X is either -CH(OR1)- or -CO-, R1 is hydrogen, a silyl group or an acyl group, and R2 is methyl, ethyl, isopropyl or sec-butyl, can be prepared by singulett oxygen oxidation of the milbemycin derivatives of the formula II herein, wherein X and R2 have the above meanings, and subsequent reduction of the 15- and 14-peroxides obtained as intermediates. Compounds of the formula I can be prepared as such or in the form of compositions for controlling endo- and ectoparasites, in particular nematodes which are parasites of animals.
466670
Fetherstonhaugh & Co.
Novartis Ag
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