19162-00-6Relevant articles and documents
High-speed microwave-promoted Mitsunobu inversions. Application toward the deracemization of sulcatol
Steinreiber, Andreas,Stadler, Alexander,Mayer, Sandra F,Faber, Kurt,Kappe
, p. 6283 - 6286 (2001)
An enantioconvergent synthesis of the aggregation pheromones (R)- and (S)-sulcatol (6-methyl-5-hepten-2-ol) is described. Key steps in the deracemization strategy are sequential combinations of enzymatic resolutions and Mitsunobu inversions. Racemization-
Essential oil of aristolochia trilobata: Synthesis, routes of exposure, acute toxicity, binary mixtures and behavioral effects on leaf-cutting ants
De Oliveira, Bruna Maria S.,Melo, Carlisson R.,Alves, Péricles B.,Santos, Abra?o A.,Santos, Ane Caroline C.,Santana, Alisson Da S.,Araújo, Ana Paula A.,Nascimento, Pedro E. S.,Blank, Arie F.,Bacci, Leandro
, (2017/03/11)
Plants of the genus Aristolochia have been frequently reported as important medicinal plants. Despite their high bioactive potential, to date, there are no reports of their effects on leaf-cutting ants. Therefore, the present study aimed to evaluate the insecticidal activity of the essential oil of Aristolochia trilobata and its major components on Atta sexdens and Acromyrmex balzani, two species of leaf-cutting ants. The bioassays were performed regarding routes of exposure, acute toxicity, binary mixtures of the major components and behavioral effects. Twenty-five components were identified in the essential oil of A. trilobata using a gas chromatographic system equipped with a mass spectrometer and a flame ionization detector. The components found in higher proportions were sulcatyl acetate, limonene, p-cymene and linalool. The essential oil of A. trilobata and its individual major components were efficient against A. balzani and A. sexdens workers when applied by fumigation. These components showed fast and efficient insecticidal activity on ants. The components acted synergistically and additively on A. balzani and A. sexdens, respectively, and caused a strong repellency/irritability in the ants. Thus, our results demonstrate the great potential of the essential oil of A. trilobata and its major components for the development of new insecticides.
Odoriferous cyclic ethers via co-halogenation reaction: Facile preparation of nerol oxide, Florol, Florol methyl ether, and Pityol methyl ether
Gupta, Pankaj,Sethi, Vijay K.,Taneja, Subhash C.,Shah, Bhahwal A.,Andotra, Samar S.,Koul, Surrinder,Chimni, Swapandeep S.,Qazi, Ghulam N.
, p. 196 - 204 (2007/10/03)
A series of odoriferous cyclic ethers, including nerol oxide (1), Floral (2), Floral methyl ether (3), and Pityol methyl ether (4b), were prepared by a versatile synthetic protocol based on co-halogenation with 1,3-dibromo-5,5-dimethylhydantoin (= 1,3-dibromo-5,5-dimethylimidazolidine-2,4- dione; DDH) as the key step. The methodology provides a facile access to important perfumery molecules from abundantly available monoterpene alcohols.
