Antiparasitic avermectin derivatives

Details Antiparasitic avermectin derivatives Antiparasitic avermectin derivatives

1989-03-07

1991-02-12

Brown, Johnnie R.

Drug, bio-affecting and body treating compositions

Designated organic active ingredient containing

Carbohydrate doai

536 71, A61K 3170, C07H 1704

Patent

active

049924249

ABSTRACT:
Broad spectrum antiparasitic agents of formula (I) having utility as anthelmintics, ectoparasiticides, insecticides, acaricides and animal growth promotants ##STR1## wherein Y is a single bond or a double bond; R.sup.1 is OH; provided that when Y is a single bond R.sup.1 is present and when Y is a double bond R.sup.1 is absent; R.sup.2 is .dbd.CH.sub.2 or a group of the formula --(X)--C(R.sup.5).dbd.CHR.sup.6 ; R.sup.3 is H or CH.sub.3 ; R.sup.5 and R.sup.6 are both H; R.sup.5 is H and R.sup.6 is C.sub.1 -C.sub.3 alkyl; or one of R.sup.5 and R.sup.6 is H and the other is C.sub.2 -C.sub.6 alkoxycarbonyl, phenyl, substituted phenyl, heteroaryl or substituted heteroaryl; and X is a direct bond or an alkylene group having from 2 to 6 carbon atoms which may be straight or branched-chain; with the proviso that R.sup.5 and R.sup.6 are not both hydrogen when X is --CH(CH.sub.3)CH.sub.2 --; processes and intermediates therefor, and compositions thereof.

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