Derivatives of 3'- and 3"-O-desmethyl avermectin compounds, compositions and methods of treating melmintic and parasitic infections
First Claim
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1. A compound having the formula:
- ##STR2## wherein the broken line at the 22,23 positions indicates that either a single or a double bond is present at the 22,23 position and that R1 is present only when the broken line indicates a 22,23-single bond;
n is 0 or 1;
R1 is hydrogen, hydroxy or a 23-oxo group;
R2 is an α
-branched C3 -C8 alkyl, alkenyl, alkoxyalkyl or alkylthioalkyl;
a C5 -C8 cycloalkyl C1 -C4 alkyl group, a C3 -C8 cycloalkyl or a C5 -C8 cycloalkenyl, each of which may be optionally substituted by methylene, or one or more C1 -C4 alkyl groups or halogen;
or a 3 to 6 membered oxygen or sulfur containing heterocycle which may be saturated or fully or partly unsaturated and which may be substituted by one or more C1 -C4 alkyl groups or halogen atoms;
R3 is hydrogen, methyl, loweralkanoyl, loweralkoxycarbonyl, or triloweralkylsilyl;
R4 and R5 are independently hydrogen, methyl, loweralkanoyl, benzoyl, loweralkoxycarbonyl, phenoxycarbonyl, carbamoyl, N-loweralkylcarbamoyl, N,N-diloweralkyl-carbamoyl or loweralkoxy loweralkyl, provided that both R4 and R5 are not simultaneously methyl; and
R6, with the broken line indicating a single bond to R6 is N-loweralkanoyl-N-loweralkylamino, loweralkoxycarbonylamino, triloweralkylsilyloxy, loweralkoxymethoxy, succinoyloxy or acetylglycyloxy;
or, when the broken line indicates a double bond to R6, R6 is, semicarbazono, loweralkanoyl hydrazono, benzoyl hydrazono, loweralkyl substituted benzoyl hydrazono or p-toluene sulfonylhydrazono.
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Abstract
There are disclosed derivatives of avermectin compounds wherein one or both of the 13-oleandrose saccharide groups lack the methyl group of the 3'"'"'- or 3"-methoxy. Such compounds are potent anthelmintic and antiparasitic agents.
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10 Claims
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1. A compound having the formula:
- ##STR2## wherein the broken line at the 22,23 positions indicates that either a single or a double bond is present at the 22,23 position and that R1 is present only when the broken line indicates a 22,23-single bond;
n is 0 or 1; R1 is hydrogen, hydroxy or a 23-oxo group; R2 is an α
-branched C3 -C8 alkyl, alkenyl, alkoxyalkyl or alkylthioalkyl;
a C5 -C8 cycloalkyl C1 -C4 alkyl group, a C3 -C8 cycloalkyl or a C5 -C8 cycloalkenyl, each of which may be optionally substituted by methylene, or one or more C1 -C4 alkyl groups or halogen;
or a 3 to 6 membered oxygen or sulfur containing heterocycle which may be saturated or fully or partly unsaturated and which may be substituted by one or more C1 -C4 alkyl groups or halogen atoms;R3 is hydrogen, methyl, loweralkanoyl, loweralkoxycarbonyl, or triloweralkylsilyl; R4 and R5 are independently hydrogen, methyl, loweralkanoyl, benzoyl, loweralkoxycarbonyl, phenoxycarbonyl, carbamoyl, N-loweralkylcarbamoyl, N,N-diloweralkyl-carbamoyl or loweralkoxy loweralkyl, provided that both R4 and R5 are not simultaneously methyl; and R6, with the broken line indicating a single bond to R6 is N-loweralkanoyl-N-loweralkylamino, loweralkoxycarbonylamino, triloweralkylsilyloxy, loweralkoxymethoxy, succinoyloxy or acetylglycyloxy;
or, when the broken line indicates a double bond to R6, R6 is, semicarbazono, loweralkanoyl hydrazono, benzoyl hydrazono, loweralkyl substituted benzoyl hydrazono or p-toluene sulfonylhydrazono. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- ##STR2## wherein the broken line at the 22,23 positions indicates that either a single or a double bond is present at the 22,23 position and that R1 is present only when the broken line indicates a 22,23-single bond;
Specification