Herbst is a destructive stored product pest. The aggregation pheromone of this pest was prepared via a new and effective strategy. The key steps include the ring-opening reaction of chiral 2-methyloxirane, the stereospecific inversion of chiral secondary tosylate, LiCuCl-catalyzed coupling of tosylate with Grignard reagent, and oxidation with RuCl/NaIO
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http://dx.doi.org/10.3762/bjoc.21.38 | DOI Listing |
Beilstein J Org Chem
March 2025
Department of Applied Chemistry, China Agricultural University, 2 West Yuanmingyuan Road, Beijing 100193, China.
Herbst is a destructive stored product pest. The aggregation pheromone of this pest was prepared via a new and effective strategy. The key steps include the ring-opening reaction of chiral 2-methyloxirane, the stereospecific inversion of chiral secondary tosylate, LiCuCl-catalyzed coupling of tosylate with Grignard reagent, and oxidation with RuCl/NaIO
View Article and Find Full Text PDFEnviron Entomol
March 2025
Department of Entomology, University of Illinois at Urbana-Champaign, Urbana, IL, USA.
Aggregation-sex pheromones, that attract both sexes, are produced by male cerambycid beetles (Coleoptera: Cerambycidae) of the subfamilies Cerambycinae, Lamiinae, and Spondylidinae. Here, we present the results of a field experiment conducted at multiple sites in southern Texas, primarily near the border with the state of Tamaulipas, Mexico. At each site, we deployed traps baited with a 6-component blend of known pheromones of cerambycine and lamiine species + an ethanol lure, a 5-component blend of lamiine pheromones + an ethanol lure, an ethanol lure alone, and a solvent control.
View Article and Find Full Text PDFEnviron Entomol
February 2025
Institute of Forestry & Conservation, John H. Daniels Faculty of Architecture, Landscape and Design, University of Toronto, Toronto, Ontario, Canada.
The mechanisms used to facilitate mate location among insects-such as pheromones-can inhibit interspecific attraction and confer reproductive isolation. However, pheromone components seem conserved within the genus Monochamus (Coleoptera: Cerambycidae) with the compound 2-(undecyloxy)ethanol (referred to as monochamol) being identified as the sex-aggregation pheromone or putative pheromone attractant for at least 15 species in this genus. This pheromone parsimony suggests the existence of additional isolating mechanisms.
View Article and Find Full Text PDFInsects
February 2025
College of Agriculture, Yangtze University, Jingzhou 434025, China.
is an economically important vegetable pest. Because of the growing demand for reducing pesticide use on vegetables, new environmentally friendly strategies for controlling are urgently needed. Insect odorant-binding proteins are prospective targets for screening environmentally friendly odorant attractants for pest control.
View Article and Find Full Text PDFAntibiotics (Basel)
February 2025
Department of General and Industrial Microbiology, Faculty of Biology, Sofia University, 1164 Sofia, Bulgaria.
Non-clinical enterococci are relatively poorly studied by means of acquired antibiotic resistance to tetracycline and by the distribution, functionality and role of their CRISPR systems. In our study, 72 enterococcal strains, isolated from various non-clinical origins, were investigated for their phenotypic and genotypic ((M), (O), (S), (L), (K), (T) and (W)) tetracycline resistance. The genetic determinants for HGT (MGEs ( and W), inducible pheromones (, and ), aggregation substances (, , and ) and CRISPR-Cas systems were characterized by PCR and whole-genome sequencing.
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