Results 21 to 30 of about 532,243 (387)

Efficient routes to epimerically-pure side-chain derivatives of lanosterol [PDF]

, 2004
A technically simple route is described to individual epimers of side-chain derivatives of lanosterol (3-hydroxy-5-lanosta-8,24-diene). Epimerically pure 24,25-epoxy-, 24,25-dihydroxy- and 24-bromo-25-hydroxy-lanosterol have been prepared in good yield ...
Kavtaradze, Levan K., Manley-Harris, Merilyn, Nicholson, Brian K.   +2 more
core   +4 more sources

Iron-catalyzed [4 + 2] annulation of α,β-unsaturated ketoxime acetates with enaminones toward functionalized pyridines

Green Synthesis and Catalysis, 2021
The iron-catalyzed [4 ​+ ​2] annulation of α,β-unsaturated ketoxime acetates with enaminones has been developed, providing efficient access to highly substituted pyridines in moderate to good yields.
Jindian Duan, Gaochen Xu, Binsen Rong, Huan Yan, Sai Zhang, Qinghuan Wu, Ning Zhu, Kai Guo   +7 more
doaj   +1 more source

Identification of acetates in elasmopalpulus lignosellus pheromone glands using a newly created mass spectral database and kóvats retention indices

Química Nova, 2007
Based on a specially created mass spectral database utilizing 23 tetradecenyl and 22 hexadecenyl acetate standards along with Kóvats retention indices obtained on a very polar stationary phase [poly (biscyanopropyl siloxane)] (SP 2340), (Z)-9-hexadecenyl
Gulab N. Jham, Alexsandro A. da Silva, Eraldo R. Lima, Paulo A. Viana   +3 more
doaj   +1 more source

Correction: de Gonzalo, G. Lipase Catalysed Kinetic Resolution of Racemic 1,2-Diols Containing a Chiral Quaternary Center. Molecules 2018, 23, 1585 [PDF]

, 2018
n/
Gonzalo Calvo, Gonzalo de
core   +1 more source

Synthesis and biological activity of acetates of copper (II) and iron (III) for the control of Aedes aegypti (Diptera: Culicidae)

Orbital: The Electronic Journal of Chemistry, 2012
This work aimed to the synthesis of basic acetates of Cu (II) and Fe(III) against larvae of Aedes aegypti and Gram negative and Gram positive. The transition metal ions Cu (II) and Fe (III) have bactericidal activity and are toxic to Aedes aegypti larvae
Jéssica V. Nardeli, Claudio T. de Carvalho, Marcelo Alves Teixeira, Gustavo G. Fonseca, Eduardo J. de Arruda   +4 more
doaj   +1 more source

Acetate Metabolism and the Inhibition of Bacterial Growth by Acetate [PDF]

Journal of Bacteriology, 2019
High concentrations of organic acids such as acetate inhibit growth of Escherichia coli and other bacteria. This phenomenon is of interest for understanding bacterial physiology but is also of practical relevance. Growth inhibition by organic acids underlies food preservation and causes problems during high-density ...
Pinhal, Stéphane, Ropers, Delphine, Geiselmann, Johannes, de Jong, Hidde   +3 more
openaire   +4 more sources

Asymmetric synthesis of 2-substituted oxetan-3-ones via metalated SAMP/RAMP hydrazones [PDF]

, 2013
2-Substituted oxetan-3-ones can be prepared in good yields and enantioselectivities (up to 84% ee) by the metalation of the SAMP/RAMP hydrazones of oxetan-3-one, followed by reaction with a range of electrophiles that include alkyl, allyl, and benzyl ...
Beasley, Benjamin, Clarkson, Guy J., Geden, Joanna V., Shipman, Michael   +3 more
core   +1 more source

Gas-liquid chromatography of dialkyl, alkyl acyl, and diacyl derivatives of glycerol

Journal of Lipid Research, 1969
Dialkyl, alkyl acyl, and diacyl glycerols were resolved as trimethylsilyl ethers and as acetates by gas-liquid chromatography on a nonpolar stationary phase (OV-1).
Randall Wood, W.J. Baumann, Fred Snyder, H.K. Mangold   +3 more
doaj   +1 more source

Gas-liquid chromatographic analyses of 1,2-ethanediol monoethers and monoesters

Journal of Lipid Research, 1968
Synthetic mixtures of saturated and unsaturated monoethers and monoesters of 1,2-ethanediol, ranging in chain length from 12 to 20, were analyzed as acetates, trifluoroacetates (TFA), and trimethylsilyl (TMS) ethers by gas chromatography on polar and ...
Randall Wood, Wolfgang J. Baumann
doaj   +1 more source

Lipase catalysed kinetic resolution of racemic 1,2-diols containing a chiral quaternary center [PDF]

, 2018
Optically active 1,2-diols are valuable buildings blocks in organic synthesis. In the present paper, a set of racemic 1,2-diols with an ester functional group are prepared, starting from -ketoesters in a three-step procedure with moderate yields.
Gonzalo Calvo, Gonzalo de
core   +2 more sources