Contact sex pheromone component of the Emerald Ash Borer Agrilus planipennis Fairmaire (Coleoptera: Buprestidae)
申请人:Silk Peter
公开号:US20100143429A1
公开(公告)日:2010-06-10
The invention disclosed relates to the detection of the Emerald Ash Borer (EAB),
Agrilus planipennis
Fairmaire (Coleoptra: B-prestidae) and in particular to the use of contact sex phenomones therefor. Analyses of the elytral hydrocarbons from male and female emerald ash borer, that were freshly emerged vs. sexually mature (>10 days old) revealed a female-specific compound, 9-methyl-pentacosane (9-Me-C
25
), only present in sexually mature females. This material was synthesized by the Wittig reaction of 2-decanone with (n-hexadecyl)-triphenylphosphonium bromide followed by catalytic reduction to yield racemic 9-Me C
25
, which matched the natural compound by GC/MS (retention time and EI-mass spectrum). In field bioassays with freeze-killed sexually mature
A. planipennis
females, feral males spent significantly more time in contact and attempting copulation with unwashed females than with females that had been washed in n-hexane to remove the cuticular hydrocarbons. Hexane-washed females to which 9-Me-C
25
had been reapplied elicited similar contact time and percentage of time attempting copulation as unwashed females, indicating that 9-methyl-pentacosane is a contact sex-pheromone component of
A. planipennis
. This is the first contact sex pheromone identified in the Buprestidae.
A new short synthesis of 10R-tuberculostearic acid and its enantiomer
作者:Ieuan O. Roberts、Mark S. Baird
DOI:10.1016/j.chemphyslip.2006.03.006
日期:2006.7
Tuberculostearic acid (10R-methyloctadecanoic acid) and its 10S-enantiomer were synthesised by a chiral pool strategy, in four steps from citronellyl bromide. (c) 2006 Elsevier Ireland Ltd. All rights reserved.
US8404225B2
申请人:——
公开号:US8404225B2
公开(公告)日:2013-03-26
Stereoselective synthesis of (2S,3S,7S)-3,7-dimethylpentadec-2-yl acetate and propionate, the sex pheromones of pine sawflies
作者:Zikun Wang、Qihai Xu、Weisheng Tian、Xinfu Pan
DOI:10.1016/j.tetlet.2007.06.123
日期:2007.10
The stereoselectivesynthesis of (2S,3S,7S)-3,7-dimethylpentadec-2-yl acetate (2) and propionate (3) was accomplished by utilizing the cheap and easily available chiron (R)-4-methyl-δ-valerolactone (4). The key steps were chelation-controlled addition of Gilmann reagent to chiral β-alkoxy aldehyde 12 and the Cu(I)-catalyzed coupling of Grignard reagent with bromoester 5 in the presence of NMP.