Oviposition Responses of Culex pipiens to a Synthetic Racemic Culex quinquefasciatus Oviposition Aggregation Pheromone
摘要:
The oviposition pheromone of Culex quinquefasciatus was synthesized in a racemic form in a simple (five steps), efficient, high yielding (45% total yield), and low cost way (use of relatively low cost reagents). Our synthetic racemic pheromone (SRP) was tested in the laboratory for its bioactivity on Culex pipiens biotype molestus, which is a member of the species complex that Culex quinquefasciatus belongs. In the testing conditions, bioactivity at the doses of 0.01, 0.1, 1, and 10 mu g per cage was found with the best bioactivity achieved at 1 mu g per cage. The effectiveness of our SRP offers a capable tool for improving mosquito oviposition traps for surveillance or even control programs.
DOI:
10.1021/jf0504871
作为产物:
描述:
5-(Z,E)-hexadecenol 在
jones reagent 作用下,
以
丙酮 为溶剂,
以80%的产率得到5-(Z,E)-hexadecenoic acid
参考文献:
名称:
Oviposition Responses of Culex pipiens to a Synthetic Racemic Culex quinquefasciatus Oviposition Aggregation Pheromone
摘要:
The oviposition pheromone of Culex quinquefasciatus was synthesized in a racemic form in a simple (five steps), efficient, high yielding (45% total yield), and low cost way (use of relatively low cost reagents). Our synthetic racemic pheromone (SRP) was tested in the laboratory for its bioactivity on Culex pipiens biotype molestus, which is a member of the species complex that Culex quinquefasciatus belongs. In the testing conditions, bioactivity at the doses of 0.01, 0.1, 1, and 10 mu g per cage was found with the best bioactivity achieved at 1 mu g per cage. The effectiveness of our SRP offers a capable tool for improving mosquito oviposition traps for surveillance or even control programs.
Metathesis syntheses of pheromones or their components
申请人:——
公开号:US20020022741A1
公开(公告)日:2002-02-21
The present invention relates to metathesis syntheses for insect sex-attractant pheromones or their components, such as E-5-decenyl acetate, the major component of the Peach Twig Borer pheromone; (5R, 6S)-6-acetoxy-5-hexadecanolide, the mosquito oviposition attractant pheromone; E9, Z11-hexadecadienal, the pecan nut casebearer moth pheromone; 9-tetradecenyl formate, an analog of the Diamondback Moth (DBM) pheromone; 11-tetradecenyl acetate, the Omnivorous Leafroller (OLR) pheromone; E-4-tridecenyl acetate, the major component of the Tomato Pinworm (TPW) pheromone; E,E-8,10-dodecadienol, the Codling Moth (CM) pheromone. The syntheses preferably employ a Class I-IV metathesis catalyst, entail few reaction steps, use generally commercially available starting materials, and have relatively short process times. These syntheses produce good yields without the need for expensive or sophisticated equipment. The invention also provides an inexpensive route for producing omega-haloalkenols by cross-metathesizing alpha-omega-diacetoxy alkenes and alpha-omega-dihalides to yield omega-haloalkenols, which are easily converted into omega-haloalkanols under traditional hydrogenation methods.
The preparation and use of fluorescent cell markers of the structure F—S
1
—S
2
-L is described where F is a fluorophore, S
1
—S
2
is a spacer linking F to L, and L is a diacyl lipid.
Compounds of formula
in which R represents hydrogen, formyl or an alkanoyl group of two to twenty-five carbon atoms and R' represents an alkyl group of one to thirty-five carbon atoms are of value as mosquito attractants, mosquitos being attracted to a location where they and/or their eggs or larvae are then destroyed.
式中 R 代表氢、甲酰基或二至二十五个碳原子的烷酰基,R' 代表一至三十五个碳原子的烷基的化合物具有吸引蚊虫的价值,蚊虫会被吸引到一个地方,然后它们和/或它们的卵或幼虫会在那里被消灭。
Methods and reagents for prevention and/or treatment of transplant rejection
申请人:Fundació Institut d'Investigació Biomèdica de
Bellvitge
公开号:EP2698636A1
公开(公告)日:2014-02-19
The present invention relates to methods for determining the probability of transplant rejection based on the determination in the subject recipient of the transplant of the levels of antibodies specific for hyaluronic acid. The invention relates as well to methods for attenuating transplant rejection and compositions to prevent transplant rejection based on the depletion of anti-hyaluronic acid antibodies from the subject.
Methods of neutralizing circulating antibody and mitigating the risk of clinically significant adverse responses to incompatible transfusions and transplantations are described. The methods comprise the administration to the subject of dispersible antigen-lipid constructs.