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provides coniferyl ferulate(CAS#:106-23-0) MSDS, density, melting point, boiling point, structure, formula, molecular weight etc. Articles of coniferyl ferulate are included as well.>> amp version: coniferyl ferulate
Rhododendron flowers; comprehensive two-dimensional gas chromatography-mass spectrometry; odor description; quadrupole time-of-flight mass spectrometry; volatile compounds.
Characterization of Volatile Compounds in Four Different Rhododendron Flowers by GC×GC-QTOFMS
Chen-Yu Qian 1 2, Wen-Xuan Quan 3, Zhang-Min Xiang 4, Chao-Chan Li 5
2019 Sep 12;
Since the 50’s, the massive and “environmental naïve” use of synthetic chemistry has revolutionized the farming community facing the dramatic growth of demography. However, nowadays, the controversy grows regarding the long-term harmful effects of these products on human health and the environment. In this context, the use of essential oils (EOs) could be an alternative to chemical products and a better understanding of their mode of biological action for new and optimal applications is of importance. Indeed, if the biocidal effects of some EOs or their components have been at least partly elucidated at the molecular level, very little is currently known regarding their mechanism of action as herbicides at the molecular level. Here, we showed that cinnamon and Java citronella essential oils and some of their main components, i.e.,, cinnamaldehyde (CIN), citronellal (CitA), and citronellol (CitO) could act as efficient herbicides when spread on A. thaliana leaves. The individual EO molecules are small amphiphiles, allowing for them to cross the mesh of cell wall and directly interact with the plant plasma membrane (PPM), which is one of the potential cellular targets of EOs. Hence, we investigated and characterized their interaction with biomimetic PPM while using an integrative biophysical approach. If CitO and CitA, maintaining a similar chemical structure, are able to interact with the model membranes without permeabilizing effect, CIN belonging to the phenylpropanoid family, is not. We suggested that different mechanisms of action for the two types of molecules can occur: while the monoterpenes could disturb the lipid organization and/or domain formation, the phenylpropanoid CIN could interact with membrane receptors.
Essential oils; plant plasma membrane; structure/activity relationships
Insights into the Relationships Between Herbicide Activities, Molecular Structure and Membrane Interaction of Cinnamon and Citronella Essential Oils Components
Laurence Lins 1, Simon Dal Maso 2, Berenice Foncoux 3, Anouar Kamili 3, Yoann Laurin 3, Manon Genva 4, M Haissam Jijakli 2, Caroline De Clerck 2, Marie Laure Fauconnier 4, Magali Deleu 3
2019 Aug 16
A chiral derivatizing agent (CDA) with the aldehyde function has been widely used in discriminating chiral amines because of the easy formation of imines under mild conditions. There is a preference for the use of cyclic aldehydes as a CDA since their lower conformational flexibility favors the differentiation of the diastereoisomeric derivatives. In this study, the imines obtained from the reaction between (S)-citronellal and the chiral amines (sec-butylamine, methylbenzylamine, and amphetamine) were analyzed by the nuclear Overhauser effect (NOE). Through NOE, it was possible to observe that the ends of the molecules were close, suggesting a quasi-folded conformation. This conformation was confirmed by theoretical calculations that indicated the London forces and the molecular orbitals as main justifications for this conformation. This conformational locking explains the good separation of 13C NMR signals between the diastereomeric imines obtained and, consequently, a good determination of the enantiomeric excess using the open chain (S)-citronellal as a CDA.
NMR; NOE; conformation; long-chain imine.
An Explanation about the Use of ( S)-Citronellal as a Chiral Derivatizing Agent (CDA) in 1 H and 13 C NMR for Sec-Butylamine, Methylbenzylamine, and Amphetamine: A Theoretical-Experimental Study
Viviani Nardini 1, Vinicius Palaretti 2, Luis Gustavo Dias 2, Gil Valdo Jose da Silva 2
2019 Aug 3