Spinosyn derivatives as insecticides
Compositions including derivatives of spinosyns and methods for the production of derivatives of spinosyns are provided. The spinosyn derivatives described herein include spinosyn derivatives functionalized on the C5-C6 double bond of spinosyn A to provide an additional ring system. The method produces spinosyn derivatives that exhibit activity towards insects, arachnids, and/or nematodes and are useful in the agricultural and animal health markets.
1. A spinosyn compound of the following formula:
or a salt thereof, wherein:
is a single bond or a double bond;
A is selected from the group consisting of hydrogen, substituted or unsubstituted carbonyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocycloalkyl, substituted or unsubstituted aryl, and substituted or unsubstituted heteroaryl;
B is selected from the group consisting of substituted or unsubstituted cycloalkyl, substituted or unsubstituted heterocycloalkyl, substituted or unsubstituted aryl, and substituted or unsubstituted heteroaryl;
C is O or NH;
R 1 is C 1 -C 6 alkyl or C 1 -C 6 aryl; and
X 1 , X 2 , and X 3 are each independently selected from O, S, N, NR, and CR, wherein each R is independently selected from hydrogen, hydroxyl, substituted or unsubstituted amino, substituted or unsubstituted thio, substituted or unsubstituted alkoxy, substituted or unsubstituted aryloxy, substituted or unsubstituted alkyl, substituted or unsubstituted alkenyl, substituted or unsubstituted alkynyl, substituted or unsubstituted cycloalkyl, substituted or unsubstituted cycloalkenyl, substituted or unsubstituted heterocycloalkyl, substituted or unsubstituted heterocycloalkenyl, substituted or unsubstituted aryl, and substituted or unsubstituted heteroaryl, wherein the ring including X 1 , X 2 , and X 3 is aromatic;
wherein when X 1 and X 2 are selected from NR and CR, the R groups of X 1 and X 2 optionally combine to form a substituted or unsubstituted cycloalkyl, substituted or unsubstituted cycloalkenyl, substituted or unsubstituted heterocycloalkyl, substituted or unsubstituted heterocycloalkenyl, substituted or unsubstituted aryl, or substituted or unsubstituted heteroaryl; and
wherein when X 2 and X 3 are selected from NR and CR the R groups of X 2 and X 3 optionally combine to form a substituted or unsubstituted cycloalkyl, substituted or unsubstituted cycloalkenyl, substituted or unsubstituted heterocycloalkyl, substituted or unsubstituted heterocycloalkenyl, substituted or unsubstituted aryl, or substituted or unsubstituted heteroaryl.
2. The spinosyn compound of claim 1 , wherein X 1 and X 2 are selected from NR and CR, and wherein the R groups of X 1 and X 2 combine to form a substituted or unsubstituted cycloalkyl, substituted or unsubstituted cycloalkenyl, substituted or unsubstituted heterocycloalkyl, substituted or unsubstituted heterocycloalkenyl, substituted or unsubstituted aryl, or substituted or unsubstituted heteroaryl.
3. The spinosyn compound of claim 1 , wherein X 2 and X 3 are selected from NR and CR, and wherein the R groups of X 2 and X 3 combine to form a substituted or unsubstituted cycloalkyl, substituted or unsubstituted cycloalkenyl, substituted or unsubstituted heterocycloalkyl, substituted or unsubstituted heterocycloalkenyl, substituted or unsubstituted aryl, or and substituted or unsubstituted heteroaryl.
4. The spinosyn compound of claim 1 , wherein A is forosamine; B is a [(2R,3R,4R,5S,6S)-3,4,5-trimethoxy-6-methyloxan-2-yl] group or a (2R,5S)-4-ethoxy-3,5-dimethoxy-6-methyloxan-2-yl] group; C is O; R 1 is ethyl; X 1 is N; X 2 is CR; R is alkyl, amino, or cycloalkyl; and X 3 is S.
5. The spinosyn compound of claim 4 , having the following formula:
6. The spinosyn compound of claim 4 , having the following formula:
7. The spinosyn compound of claim 1 , having the formula represented by Structure I-A:
8. The spinosyn compound of claim 1 , having the formula represented by Structure I-B:
9. The spinosyn compound of claim 1 , having the formula represented by Structure I-C:
10. The spinosyn compound of claim 1 , having the formula represented by Structure I-D:
11. The spinosyn compound of claim 1 , having the formula represented by Structure I-E:
12. The spinosyn compound of claim 1 , having the formula represented by Structure I-F:
13. The spinosyn compound of claim 1 , having the formula represented by Structure I-G:
14. A formulation comprising at least one spinosyn compound of claim 1 and an acceptable carrier.
15. The formulation of claim 14 , further comprising at least one additional active ingredient.
16. The formulation of claim 15 , wherein the additional active ingredient is a contact-acting insecticide or a contact-acting miticide.
17. A method for controlling pests, comprising contacting a pest with an effective amount of the a spinosyn compound of claim 1 .
18. The method of claim 17 , wherein the pest is an insect, an arachnid, or a nematode.
19. A method for making a spinosyn compound, comprising reacting the C-5,6 double bond of Spinosyn A to form a spinosyn compound according to claim 1 , wherein the spinosyn compound forms via an α-halo ketone intermediate.