Results 71 to 80 of about 83,124 (333)

Stereochemical Control in the Matteson Reaction

Chemistry – A European Journal, EarlyView.
The Matteson homologation is a highly versatile method for the stereoselective insertion of carbenoids into boronic esters. Through iterative application of the process, complex chiral molecules can be synthesized. The stereoselectivity of the reaction is determined by a chiral diol incorporated in the boronic ester.
Hae Mo Lee, Christoph Hirschhäuser
wiley   +1 more source

Rheological characteristics of aqueous wax emulsions used for the controlled release of pheromones as an alternative to the use of pesticides for insect pest management [PDF]

, 2011
Most pesticides produce some risk of harm to the environment because pesticides are designed to kill or adversely affect living organisms (US EPA, 2010). It is desirable that alternate, safer forms of pest control be developed.
NC DOCKS at Western Carolina University, Ballew, Stephen Daniel   +1 more
core  

The scent gland composition of the Mangshan pit viper, Protobothrops mangshanensis

Beilstein Journal of Organic Chemistry
The Mangshan pit viper, Protobothrops mangshanensis, is a rare, highly endangered snake native to the mountainous regions of Hunan Province in China. Snakes possess abdominal scent glands, which have been chemically studied in several species.
Jonas Holste, Paul Weldon, Donald Boyer, Stefan Schulz   +3 more
doaj   +1 more source

Release of multicomponent pheromones from porous fibres

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract Surface engineering empowers a polymer exclusion net to serve dual functions: physical exclusion and pheromonal release, allowing for pest control in agricultural crops. In previous work, a net woven from porous fibres releasing simple, single‐component alarm pheromones showed promising results in field tests.
Darius Klassen, William Simon, Olivier Ngoy, Mikaël Larose, Catherine Pouchet, Gérald Chouinard, Marie‐Josée Dumont, Jason R. Tavares   +7 more
wiley   +1 more source

Plant‐Derived Extracts Disrupt Biofilm Formation and Quorum Sensing in Yersinia enterocolitica: Insights From GC‐MS and Molecular Docking

Food Chemistry International, EarlyView.
The graphical abstract represents how natural plant products that preferentially target the specific receptors of quorum sensing could be developed to combat biofilms linked to Yersinia enterocolitica using the potent abilities of protein–ligand complexes with high docking scores.
Rajendran Thomas, Songeeta Singha, Devarshi Bharadwaj, Abinash Kumar, Dolly Sharma, Sadhana Ojha, Hirakjyoti Das, Vivek Kumar Gupta   +7 more
wiley   +1 more source

Evolution and speciation [PDF]

, 2008
Charles Darwin is the father of evolution as we know it today. In his book “The origin of species” he states that new species originate from ancestral species that change over time, and that the mechanism of the change is natural selection.
Boddum, Tina
core  

Binuclear Copper‐Dependent Oxidative Enzymes Involved in Fungal Natural Product Modifications

Journal of the Chinese Chemical Society, EarlyView.
This article summarizes recent biochemical characterizations of a new enzyme family named by the authors as binuclear copper‐dependent oxidative enzymes (BiNCOs). Found in fungal natural product biosynthesis, BiNCOs catalyze diverse CH functionalization reactions, including C(sp3)H halogenation, C(sp3)H hydroxylation, C(sp3)O macrocyclization, and ...
Chen‐Yu Chiang, Masao Ohashi, Yi Tang
wiley   +1 more source

Interactions between host-plant volatiles and the sex pheromones of the bird cherry-oat aphid, Rhopalosiphum padi and the damson-hop aphid, Phorodon humuli [PDF]

, 2006
The bird cherry-oat aphid, Rhopalosiphum padi (L.), and the damson-hop aphid, Phorodon humuli (Schrank), migrate at the same time of year and colonize closely related Prunus spp.
Colin A. M. Campbell, Pickett, J. A., Pope, Tom W., Hardie, J., Jim Hardie, Lester J. Wadhams, Wadhams, Lester J., Campbell, Colin M. A., Hardie, Jim, Pope, T. W., Pickett, John A., Wadhams, L. J., Campbell, C. A. M., Tom W. Pope, John A. Pickett   +14 more
core   +1 more source

Tracking Short-Range Attraction and Oviposition of European Grapevine Moths Affected by Volatile Organic Compounds in a Four-Chamber Olfactometer

Insects, 2020
The identification of volatile organic compounds (VOCs) leading to short-range attraction and oviposition of the European grapevine moth Lobesia botrana and European grape berry moth Eupoecilia ambiguella (Lepidoptera: Tortricidae) is crucial in order to
Anna Markheiser, Margit Rid, Sandra Biancu, Jürgen Gross, Christoph Hoffmann   +4 more
doaj   +1 more source

Quorum sensing by peptide pheromones and two‐component signal‐transduction systems in Gram‐positive bacteria

Molecular Microbiology, 1997
Cell‐density‐dependent gene expression appears to be widely spread in bacteria. This quorum‐sensing phenomenon has been well established in Gram‐negative bacteria, where N‐acyl homoserine lactones are the diffusible communication molecules that modulate ...
M. Kleerebezem, L. Quadri, O. Kuipers, W. D. de Vos   +3 more
semanticscholar   +1 more source