|
Toxicity against Trichoplusia ni (cabbage looper) third-instar larvae stage assessed as mortality at 10 ug/ml for 24 hr by topical application
|
Trichoplusia ni
|
26.7
%
|
|
Journal : Crop Protection
Title : Antifeedant and toxic effects of naturally occurring and synthetic quinones to the cabbage looper, Trichoplusia ni
Year : 2012
Volume : 31
Issue : 1
First Page : 8
Last Page : 14
Authors : Akhtar Y, Isman MB, Niehaus LA, Lee CH, Lee HS.
Abstract : We investigated the feeding deterrent effects and toxicity of naturally occurring and synthetic quinones to the cabbage looper, Trichoplusia ni. Feeding deterrent effects were determined via a leaf disc choice bioassay. Based on DC₅₀ values, 1,4-naphthoquinone was the most active antifeedant (DC₅₀ = 1.8 μg/cm²) followed by juglone (DC₅₀ = 2.1 μg/cm²), 2-methoxy-1,4-naphthoquinone (DC₅₀ = 2.6 μg/cm²), plumbagin (DC₅₀ = 3.3 μg/cm²), and 2,3-dimethoxy-5-mehtyl-1,4-benzoquinone (DC₅₀ = 4.2 μg/cm²) in third instar cabbage looper larvae. 2-Bromo-1,4-naphthoquinone, 2-chloro-3-morpholino-1,4-naphthoquinone, 1,8-dihydroxy-anthraquinone, 2-methyl-1,4-naphthoquinone and naphthazarin had DC₅₀ values ranging from 8.4 to 10.1 μg/cm². Juglone and plumbagin were able to provide protection to intact cabbage plants in a greenhouse experiment. Cabbage looper larvae consumed less leaf area and weighed less on cabbage plants treated with either of these naturally occurring quinones. Most of the quinones demonstrated levels of antifeedant activity greater than neem, a positive control, in laboratory bioassays. The level of activity for juglone was comparable to neem in the greenhouse experiment. There was also a reduction in the number of larvae on treated plants compared with the negative control. Structure-activity relationships suggest that the antifeedant effects of the tested quinones depend on the number and position of hydroxyl and methoxyl substituents of quinones. Most of the quinones were of medium-low toxicity to third instar cabbage looper larvae via topical administration. Some of these quinones could have potential for development as commercial insect control agents targeting the feeding behavior of insects with minimal toxicity, provided that their impacts on non-target organisms and environment are minimal.
|
Antifeedant activity against Trichoplusia ni (cabbage looper) third-instar larvae stage assessed as concentrations causing 50% feeding deterrence by feeding deterrent bioassay
|
Trichoplusia ni
|
19.3
microg/cm2
|
|
Journal : Crop Protection
Title : Antifeedant and toxic effects of naturally occurring and synthetic quinones to the cabbage looper, Trichoplusia ni
Year : 2012
Volume : 31
Issue : 1
First Page : 8
Last Page : 14
Authors : Akhtar Y, Isman MB, Niehaus LA, Lee CH, Lee HS.
Abstract : We investigated the feeding deterrent effects and toxicity of naturally occurring and synthetic quinones to the cabbage looper, Trichoplusia ni. Feeding deterrent effects were determined via a leaf disc choice bioassay. Based on DC₅₀ values, 1,4-naphthoquinone was the most active antifeedant (DC₅₀ = 1.8 μg/cm²) followed by juglone (DC₅₀ = 2.1 μg/cm²), 2-methoxy-1,4-naphthoquinone (DC₅₀ = 2.6 μg/cm²), plumbagin (DC₅₀ = 3.3 μg/cm²), and 2,3-dimethoxy-5-mehtyl-1,4-benzoquinone (DC₅₀ = 4.2 μg/cm²) in third instar cabbage looper larvae. 2-Bromo-1,4-naphthoquinone, 2-chloro-3-morpholino-1,4-naphthoquinone, 1,8-dihydroxy-anthraquinone, 2-methyl-1,4-naphthoquinone and naphthazarin had DC₅₀ values ranging from 8.4 to 10.1 μg/cm². Juglone and plumbagin were able to provide protection to intact cabbage plants in a greenhouse experiment. Cabbage looper larvae consumed less leaf area and weighed less on cabbage plants treated with either of these naturally occurring quinones. Most of the quinones demonstrated levels of antifeedant activity greater than neem, a positive control, in laboratory bioassays. The level of activity for juglone was comparable to neem in the greenhouse experiment. There was also a reduction in the number of larvae on treated plants compared with the negative control. Structure-activity relationships suggest that the antifeedant effects of the tested quinones depend on the number and position of hydroxyl and methoxyl substituents of quinones. Most of the quinones were of medium-low toxicity to third instar cabbage looper larvae via topical administration. Some of these quinones could have potential for development as commercial insect control agents targeting the feeding behavior of insects with minimal toxicity, provided that their impacts on non-target organisms and environment are minimal.
|
Antifeedant activity against Trichoplusia ni (cabbage looper) third-instar larvae stage assessed as feeding deterrence index at 50 microg/cm'2 by feeding deterrent bioassay
|
Trichoplusia ni
|
100.0
%
|
|
Journal : Crop Protection
Title : Antifeedant and toxic effects of naturally occurring and synthetic quinones to the cabbage looper, Trichoplusia ni
Year : 2012
Volume : 31
Issue : 1
First Page : 8
Last Page : 14
Authors : Akhtar Y, Isman MB, Niehaus LA, Lee CH, Lee HS.
Abstract : We investigated the feeding deterrent effects and toxicity of naturally occurring and synthetic quinones to the cabbage looper, Trichoplusia ni. Feeding deterrent effects were determined via a leaf disc choice bioassay. Based on DC₅₀ values, 1,4-naphthoquinone was the most active antifeedant (DC₅₀ = 1.8 μg/cm²) followed by juglone (DC₅₀ = 2.1 μg/cm²), 2-methoxy-1,4-naphthoquinone (DC₅₀ = 2.6 μg/cm²), plumbagin (DC₅₀ = 3.3 μg/cm²), and 2,3-dimethoxy-5-mehtyl-1,4-benzoquinone (DC₅₀ = 4.2 μg/cm²) in third instar cabbage looper larvae. 2-Bromo-1,4-naphthoquinone, 2-chloro-3-morpholino-1,4-naphthoquinone, 1,8-dihydroxy-anthraquinone, 2-methyl-1,4-naphthoquinone and naphthazarin had DC₅₀ values ranging from 8.4 to 10.1 μg/cm². Juglone and plumbagin were able to provide protection to intact cabbage plants in a greenhouse experiment. Cabbage looper larvae consumed less leaf area and weighed less on cabbage plants treated with either of these naturally occurring quinones. Most of the quinones demonstrated levels of antifeedant activity greater than neem, a positive control, in laboratory bioassays. The level of activity for juglone was comparable to neem in the greenhouse experiment. There was also a reduction in the number of larvae on treated plants compared with the negative control. Structure-activity relationships suggest that the antifeedant effects of the tested quinones depend on the number and position of hydroxyl and methoxyl substituents of quinones. Most of the quinones were of medium-low toxicity to third instar cabbage looper larvae via topical administration. Some of these quinones could have potential for development as commercial insect control agents targeting the feeding behavior of insects with minimal toxicity, provided that their impacts on non-target organisms and environment are minimal.
|
Termiticidal activity against Coptotermes formosanus placed on 0.001 % wt/wt compound treated filter paper assessed as termite mortality measured 17 days post compound exposure
|
Coptotermes formosanus
|
5.0
%
|
|
Journal : J Agric Food Chem
Title : Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
Year : 2008
Volume : 56
Issue : 11
First Page : 4021
Last Page : 4026
Authors : Mozaina K, Cantrell CL, Mims AB, Lax AR, Tellez MR, Osbrink WL.
Abstract : A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
|
Termiticidal activity against Coptotermes formosanus placed on 0.01 % wt/wt compound treated filter paper assessed as termite mortality measured 17 days post compound exposure
|
Coptotermes formosanus
|
5.0
%
|
|
Journal : J Agric Food Chem
Title : Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
Year : 2008
Volume : 56
Issue : 11
First Page : 4021
Last Page : 4026
Authors : Mozaina K, Cantrell CL, Mims AB, Lax AR, Tellez MR, Osbrink WL.
Abstract : A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
|
Termiticidal activity against Coptotermes formosanus placed on 0.05 % wt/wt compound treated filter paper assessed as termite mortality measured 17 days post compound exposure
|
Coptotermes formosanus
|
6.7
%
|
|
Journal : J Agric Food Chem
Title : Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
Year : 2008
Volume : 56
Issue : 11
First Page : 4021
Last Page : 4026
Authors : Mozaina K, Cantrell CL, Mims AB, Lax AR, Tellez MR, Osbrink WL.
Abstract : A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
|
Termiticidal activity against Coptotermes formosanus placed on 0.1 % wt/wt compound treated filter paper assessed as termite mortality measured 17 days post compound exposure
|
Coptotermes formosanus
|
8.3
%
|
|
Journal : J Agric Food Chem
Title : Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
Year : 2008
Volume : 56
Issue : 11
First Page : 4021
Last Page : 4026
Authors : Mozaina K, Cantrell CL, Mims AB, Lax AR, Tellez MR, Osbrink WL.
Abstract : A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
|
Termiticidal activity against Coptotermes formosanus placed on 0.5 % wt/wt compound treated filter paper assessed as termite mortality measured 17 days post compound exposure
|
Coptotermes formosanus
|
11.7
%
|
|
Journal : J Agric Food Chem
Title : Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
Year : 2008
Volume : 56
Issue : 11
First Page : 4021
Last Page : 4026
Authors : Mozaina K, Cantrell CL, Mims AB, Lax AR, Tellez MR, Osbrink WL.
Abstract : A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
|
Termiticidal activity against Coptotermes formosanus placed on 0.001 % wt/wt compound treated filter paper assessed as termite mortality measured 13 days post compound exposure
|
Coptotermes formosanus
|
1.7
%
|
|
Journal : J Agric Food Chem
Title : Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
Year : 2008
Volume : 56
Issue : 11
First Page : 4021
Last Page : 4026
Authors : Mozaina K, Cantrell CL, Mims AB, Lax AR, Tellez MR, Osbrink WL.
Abstract : A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
|
Termiticidal activity against Coptotermes formosanus placed on 0.01 % wt/wt compound treated filter paper assessed as termite mortality measured 13 days post compound exposure
|
Coptotermes formosanus
|
5.0
%
|
|
Journal : J Agric Food Chem
Title : Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
Year : 2008
Volume : 56
Issue : 11
First Page : 4021
Last Page : 4026
Authors : Mozaina K, Cantrell CL, Mims AB, Lax AR, Tellez MR, Osbrink WL.
Abstract : A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
|
Termiticidal activity against Coptotermes formosanus placed on 0.05 % wt/wt compound treated filter paper assessed as termite mortality measured 13 days post compound exposure
|
Coptotermes formosanus
|
6.7
%
|
|
Journal : J Agric Food Chem
Title : Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
Year : 2008
Volume : 56
Issue : 11
First Page : 4021
Last Page : 4026
Authors : Mozaina K, Cantrell CL, Mims AB, Lax AR, Tellez MR, Osbrink WL.
Abstract : A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
|
Termiticidal activity against Coptotermes formosanus placed on 0.1 % wt/wt compound treated filter paper assessed as termite mortality measured 13 days post compound exposure
|
Coptotermes formosanus
|
6.7
%
|
|
Journal : J Agric Food Chem
Title : Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
Year : 2008
Volume : 56
Issue : 11
First Page : 4021
Last Page : 4026
Authors : Mozaina K, Cantrell CL, Mims AB, Lax AR, Tellez MR, Osbrink WL.
Abstract : A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
|
Termiticidal activity against Coptotermes formosanus placed on 0.5 % wt/wt compound treated filter paper assessed as termite mortality measured 13 days post compound exposure
|
Coptotermes formosanus
|
10.0
%
|
|
Journal : J Agric Food Chem
Title : Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
Year : 2008
Volume : 56
Issue : 11
First Page : 4021
Last Page : 4026
Authors : Mozaina K, Cantrell CL, Mims AB, Lax AR, Tellez MR, Osbrink WL.
Abstract : A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
|
Termiticidal activity against Coptotermes formosanus placed on 0.001 % wt/wt compound treated filter paper assessed as termite mortality measured 11 days post compound exposure
|
Coptotermes formosanus
|
1.7
%
|
|
Journal : J Agric Food Chem
Title : Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
Year : 2008
Volume : 56
Issue : 11
First Page : 4021
Last Page : 4026
Authors : Mozaina K, Cantrell CL, Mims AB, Lax AR, Tellez MR, Osbrink WL.
Abstract : A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
|
Termiticidal activity against Coptotermes formosanus placed on 0.01 % wt/wt compound treated filter paper assessed as termite mortality measured 11 days post compound exposure
|
Coptotermes formosanus
|
3.3
%
|
|
Journal : J Agric Food Chem
Title : Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
Year : 2008
Volume : 56
Issue : 11
First Page : 4021
Last Page : 4026
Authors : Mozaina K, Cantrell CL, Mims AB, Lax AR, Tellez MR, Osbrink WL.
Abstract : A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
|
Termiticidal activity against Coptotermes formosanus placed on 0.05 % wt/wt compound treated filter paper assessed as termite mortality measured 11 days post compound exposure
|
Coptotermes formosanus
|
0.0
%
|
|
Journal : J Agric Food Chem
Title : Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
Year : 2008
Volume : 56
Issue : 11
First Page : 4021
Last Page : 4026
Authors : Mozaina K, Cantrell CL, Mims AB, Lax AR, Tellez MR, Osbrink WL.
Abstract : A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
|
Termiticidal activity against Coptotermes formosanus placed on 0.1 % wt/wt compound treated filter paper assessed as termite mortality measured 11 days post compound exposure
|
Coptotermes formosanus
|
1.7
%
|
|
Journal : J Agric Food Chem
Title : Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
Year : 2008
Volume : 56
Issue : 11
First Page : 4021
Last Page : 4026
Authors : Mozaina K, Cantrell CL, Mims AB, Lax AR, Tellez MR, Osbrink WL.
Abstract : A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
|
Termiticidal activity against Coptotermes formosanus placed on 0.001 % wt/wt compound treated filter paper assessed as termite mortality measured 9 days post compound exposure
|
Coptotermes formosanus
|
1.7
%
|
|
Journal : J Agric Food Chem
Title : Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
Year : 2008
Volume : 56
Issue : 11
First Page : 4021
Last Page : 4026
Authors : Mozaina K, Cantrell CL, Mims AB, Lax AR, Tellez MR, Osbrink WL.
Abstract : A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
|
Termiticidal activity against Coptotermes formosanus placed on 0.01 % wt/wt compound treated filter paper assessed as termite mortality measured 9 days post compound exposure
|
Coptotermes formosanus
|
3.3
%
|
|
Journal : J Agric Food Chem
Title : Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
Year : 2008
Volume : 56
Issue : 11
First Page : 4021
Last Page : 4026
Authors : Mozaina K, Cantrell CL, Mims AB, Lax AR, Tellez MR, Osbrink WL.
Abstract : A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
|
Termiticidal activity against Coptotermes formosanus placed on 0.05 % wt/wt compound treated filter paper assessed as termite mortality measured 9 days post compound exposure
|
Coptotermes formosanus
|
0.0
%
|
|
Journal : J Agric Food Chem
Title : Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
Year : 2008
Volume : 56
Issue : 11
First Page : 4021
Last Page : 4026
Authors : Mozaina K, Cantrell CL, Mims AB, Lax AR, Tellez MR, Osbrink WL.
Abstract : A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
|
Termiticidal activity against Coptotermes formosanus placed on 0.1 % wt/wt compound treated filter paper assessed as termite mortality measured 9 days post compound exposure
|
Coptotermes formosanus
|
1.7
%
|
|
Journal : J Agric Food Chem
Title : Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
Year : 2008
Volume : 56
Issue : 11
First Page : 4021
Last Page : 4026
Authors : Mozaina K, Cantrell CL, Mims AB, Lax AR, Tellez MR, Osbrink WL.
Abstract : A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
|
Termiticidal activity against Coptotermes formosanus placed on 0.5 % wt/wt compound treated filter paper assessed as termite mortality measured 9 days post compound exposure
|
Coptotermes formosanus
|
6.7
%
|
|
Journal : J Agric Food Chem
Title : Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
Year : 2008
Volume : 56
Issue : 11
First Page : 4021
Last Page : 4026
Authors : Mozaina K, Cantrell CL, Mims AB, Lax AR, Tellez MR, Osbrink WL.
Abstract : A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
|
Termiticidal activity against Coptotermes formosanus placed on 0.001 % wt/wt compound treated filter paper assessed as termite mortality measured 6 days post compound exposure
|
Coptotermes formosanus
|
0.0
%
|
|
Journal : J Agric Food Chem
Title : Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
Year : 2008
Volume : 56
Issue : 11
First Page : 4021
Last Page : 4026
Authors : Mozaina K, Cantrell CL, Mims AB, Lax AR, Tellez MR, Osbrink WL.
Abstract : A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
|
Termiticidal activity against Coptotermes formosanus placed on 0.01 % wt/wt compound treated filter paper assessed as termite mortality measured 6 days post compound exposure
|
Coptotermes formosanus
|
0.0
%
|
|
Journal : J Agric Food Chem
Title : Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
Year : 2008
Volume : 56
Issue : 11
First Page : 4021
Last Page : 4026
Authors : Mozaina K, Cantrell CL, Mims AB, Lax AR, Tellez MR, Osbrink WL.
Abstract : A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
|
Termiticidal activity against Coptotermes formosanus placed on 0.05 % wt/wt compound treated filter paper assessed as termite mortality measured 6 days post compound exposure
|
Coptotermes formosanus
|
0.0
%
|
|
Journal : J Agric Food Chem
Title : Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
Year : 2008
Volume : 56
Issue : 11
First Page : 4021
Last Page : 4026
Authors : Mozaina K, Cantrell CL, Mims AB, Lax AR, Tellez MR, Osbrink WL.
Abstract : A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
|
Termiticidal activity against Coptotermes formosanus placed on 0.1 % wt/wt compound treated filter paper assessed as termite mortality measured 6 days post compound exposure
|
Coptotermes formosanus
|
0.0
%
|
|
Journal : J Agric Food Chem
Title : Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
Year : 2008
Volume : 56
Issue : 11
First Page : 4021
Last Page : 4026
Authors : Mozaina K, Cantrell CL, Mims AB, Lax AR, Tellez MR, Osbrink WL.
Abstract : A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
|
Termiticidal activity against Coptotermes formosanus placed on 0.5 % wt/wt compound treated filter paper assessed as termite mortality measured 6 days post compound exposure
|
Coptotermes formosanus
|
1.7
%
|
|
Journal : J Agric Food Chem
Title : Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
Year : 2008
Volume : 56
Issue : 11
First Page : 4021
Last Page : 4026
Authors : Mozaina K, Cantrell CL, Mims AB, Lax AR, Tellez MR, Osbrink WL.
Abstract : A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
|
Termiticidal activity against Coptotermes formosanus placed on 0.5 % wt/wt compound treated filter paper assessed as termite mortality measured 21 days post compound exposure
|
Coptotermes formosanus
|
18.3
%
|
|
Journal : J Agric Food Chem
Title : Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
Year : 2008
Volume : 56
Issue : 11
First Page : 4021
Last Page : 4026
Authors : Mozaina K, Cantrell CL, Mims AB, Lax AR, Tellez MR, Osbrink WL.
Abstract : A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
|
Termiticidal activity against Coptotermes formosanus placed on 0.5 % wt/wt compound treated filter paper assessed as termite mortality measured 11 days post compound exposure
|
Coptotermes formosanus
|
6.7
%
|
|
Journal : J Agric Food Chem
Title : Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
Year : 2008
Volume : 56
Issue : 11
First Page : 4021
Last Page : 4026
Authors : Mozaina K, Cantrell CL, Mims AB, Lax AR, Tellez MR, Osbrink WL.
Abstract : A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
|
Termiticidal activity against Coptotermes formosanus placed on 1 % wt/wt compound treated filter paper assessed as termite mortality measured 21 days post compound exposure
|
Coptotermes formosanus
|
100.0
%
|
|
Journal : J Agric Food Chem
Title : Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
Year : 2008
Volume : 56
Issue : 11
First Page : 4021
Last Page : 4026
Authors : Mozaina K, Cantrell CL, Mims AB, Lax AR, Tellez MR, Osbrink WL.
Abstract : A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
|
Termiticidal activity against Coptotermes formosanus placed on 1 % wt/wt compound treated filter paper assessed as termite mortality measured 11 days post compound exposure
|
Coptotermes formosanus
|
100.0
%
|
|
Journal : J Agric Food Chem
Title : Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
Year : 2008
Volume : 56
Issue : 11
First Page : 4021
Last Page : 4026
Authors : Mozaina K, Cantrell CL, Mims AB, Lax AR, Tellez MR, Osbrink WL.
Abstract : A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
|
Termiticidal activity against Coptotermes formosanus placed on 1 % wt/wt compound treated filter paper assessed as termite mortality measured 3 days post compound exposure
|
Coptotermes formosanus
|
100.0
%
|
|
Journal : J Agric Food Chem
Title : Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
Year : 2008
Volume : 56
Issue : 11
First Page : 4021
Last Page : 4026
Authors : Mozaina K, Cantrell CL, Mims AB, Lax AR, Tellez MR, Osbrink WL.
Abstract : A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
|
Antifeedant activity against Coptotermes formosanus placed on 0.5 % wt/wt compound treated filter paper assessed as filter paper consumption measured 21 days post compound exposure (Rvb = 54.4 +/- 20.7 mg)
|
Coptotermes formosanus
|
93.1
mg
|
|
Journal : J Agric Food Chem
Title : Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
Year : 2008
Volume : 56
Issue : 11
First Page : 4021
Last Page : 4026
Authors : Mozaina K, Cantrell CL, Mims AB, Lax AR, Tellez MR, Osbrink WL.
Abstract : A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
|
Antifeedant activity against Coptotermes formosanus placed on 0.001 % wt/wt compound treated filter paper assessed as filter paper consumption measured 21 days post compound exposure
|
Coptotermes formosanus
|
80.6
mg
|
|
Journal : J Agric Food Chem
Title : Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
Year : 2008
Volume : 56
Issue : 11
First Page : 4021
Last Page : 4026
Authors : Mozaina K, Cantrell CL, Mims AB, Lax AR, Tellez MR, Osbrink WL.
Abstract : A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
|
Antifeedant activity against Coptotermes formosanus placed on 0.01 % wt/wt compound treated filter paper assessed as filter paper consumption measured 21 days post compound exposure
|
Coptotermes formosanus
|
75.4
mg
|
|
Journal : J Agric Food Chem
Title : Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
Year : 2008
Volume : 56
Issue : 11
First Page : 4021
Last Page : 4026
Authors : Mozaina K, Cantrell CL, Mims AB, Lax AR, Tellez MR, Osbrink WL.
Abstract : A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
|
Antifeedant activity against Coptotermes formosanus placed on 0.05 % wt/wt compound treated filter paper assessed as filter paper consumption measured 21 days post compound exposure
|
Coptotermes formosanus
|
74.0
mg
|
|
Journal : J Agric Food Chem
Title : Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
Year : 2008
Volume : 56
Issue : 11
First Page : 4021
Last Page : 4026
Authors : Mozaina K, Cantrell CL, Mims AB, Lax AR, Tellez MR, Osbrink WL.
Abstract : A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
|
Antifeedant activity against Coptotermes formosanus placed on 0.1 % wt/wt compound treated filter paper assessed as filter paper consumption measured 21 days post compound exposure (Rvb = 54.4 +/- 20.7 mg)
|
Coptotermes formosanus
|
83.5
mg
|
|
Journal : J Agric Food Chem
Title : Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
Year : 2008
Volume : 56
Issue : 11
First Page : 4021
Last Page : 4026
Authors : Mozaina K, Cantrell CL, Mims AB, Lax AR, Tellez MR, Osbrink WL.
Abstract : A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
|
Antifeedant activity against Coptotermes formosanus placed on 1 % wt/wt compound treated filter paper assessed as filter paper consumption measured 21 days post compound exposure (Rvb = 85 +/- 15.1 mg)
|
Coptotermes formosanus
|
0.0
mg
|
|
Journal : J Agric Food Chem
Title : Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
Year : 2008
Volume : 56
Issue : 11
First Page : 4021
Last Page : 4026
Authors : Mozaina K, Cantrell CL, Mims AB, Lax AR, Tellez MR, Osbrink WL.
Abstract : A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
|
Termiticidal activity against Coptotermes formosanus placed on 0.001 % wt/wt compound treated filter paper assessed as termite mortality measured 21 days post compound exposure
|
Coptotermes formosanus
|
5.0
%
|
|
Journal : J Agric Food Chem
Title : Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
Year : 2008
Volume : 56
Issue : 11
First Page : 4021
Last Page : 4026
Authors : Mozaina K, Cantrell CL, Mims AB, Lax AR, Tellez MR, Osbrink WL.
Abstract : A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
|
Termiticidal activity against Coptotermes formosanus placed on 0.01 % wt/wt compound treated filter paper assessed as termite mortality measured 21 days post compound exposure
|
Coptotermes formosanus
|
11.7
%
|
|
Journal : J Agric Food Chem
Title : Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
Year : 2008
Volume : 56
Issue : 11
First Page : 4021
Last Page : 4026
Authors : Mozaina K, Cantrell CL, Mims AB, Lax AR, Tellez MR, Osbrink WL.
Abstract : A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
|
Termiticidal activity against Coptotermes formosanus placed on 0.05 % wt/wt compound treated filter paper assessed as termite mortality measured 21 days post compound exposure
|
Coptotermes formosanus
|
8.3
%
|
|
Journal : J Agric Food Chem
Title : Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
Year : 2008
Volume : 56
Issue : 11
First Page : 4021
Last Page : 4026
Authors : Mozaina K, Cantrell CL, Mims AB, Lax AR, Tellez MR, Osbrink WL.
Abstract : A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
|
Termiticidal activity against Coptotermes formosanus placed on 0.1 % wt/wt compound treated filter paper assessed as termite mortality measured 21 days post compound exposure
|
Coptotermes formosanus
|
8.3
%
|
|
Journal : J Agric Food Chem
Title : Activity of 1,4-benzoquinones against formosan subterranean termites (Coptotermes formosanus).
Year : 2008
Volume : 56
Issue : 11
First Page : 4021
Last Page : 4026
Authors : Mozaina K, Cantrell CL, Mims AB, Lax AR, Tellez MR, Osbrink WL.
Abstract : A large number of naturally occurring and synthetic benzoquinones were evaluated for activity against the Formosan subterranean termite, Coptotermes formosanus, with potential use in termite control. Among these bioactive naturally occurring benzoquinones are 2-methyl-5-isopropyl-1,4-benzoquinone, 2-methoxy-6-pentyl-1,4-benzoquinone, 2,3-dimethoxy-5-methyl-6-(3-methyl-2-butenyl)-1,4-benzoquinone, 2,3-dimethoxy-5,6-dimethyl-1,4-benzoquinone, and 2,3-dichloro-5,6-dimethyl-1,4-benzoquinone. All five of these compounds demonstrated 100% mortality against C. formosanus by day 11 at a concentration of 1% (wt/wt) or less. In general, benzoquinones with one or two hydrophobic groups on the 5 and/or 6 positions of the quinone ring along with one or two group(s) on the opposite side of the ring, at the 2 and/or 3 position, led to high rates of mortality against C. formosanus. Quantitative structure-activity relationship (QSAR) studies showed no correlation between lipophilicity (calculated log P) and mortality for the entire group of nonhalogenated benzoquinones. A correlation was observed between C-6 chain length and day 3 percent mortality for 2,3-dimethoxy-5-methyl-6-substituted aliphatic benzoquinones where short chain lengths resulted in higher mortality.
