Results 11 to 20 of about 15,269 (248)

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

open access: yesJournal 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

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

open access: yesOrbital: 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   +4 more
doaj   +1 more source

Effect of acute exposure of lead acetates on the morphology of liver and kidney of mice (Mus musculus) and the role of vitamin C as a repairing agent [PDF]

open access: yesBasrah Journal of Veterinary Research, 2011
The objective of this study is to elicit the destructive effect of lead on the tissues of liver and kidney of mice and if vitamin C is capable of repairing the damage caused by lead. In this study, 40 male mice were used and divided into three groups as:
Ishraq J. H   +2 more
doaj   +1 more source

PdII-Catalyzed Cyclization of 1-Cyclopropyl-2-propynyl Acetates

open access: yesCHIMIA, 1985
PdCl2(MeCN)2 catalyzes the cyclization of 1-cyclopropyl-2-propynyl acetates to 3-methyl-1,4-cyclopentadienyl acetates, which are cleaved in situ to 2-cyclopentenones.
Valentin Rautenstrauch
doaj   +1 more source

An environmentally benign cascade reaction of 1,2,3-indantriones with ethyl 2-(pyridine-2-yl)acetates for site-selective synthesis of 5H-isochromeno[4,3-b]indolizin-5-ones

open access: yesGreen Synthesis and Catalysis, 2021
A novel approach was developed for the synthesis of 5H-isochromeno [4,3-b]indolizin-5-ones (ICIDOs) 3 through a cascade reaction of 1,2,3-indantriones 1 with ethyl 2-(pyridine-2-yl)acetates 2.
Haodan He   +4 more
doaj   +1 more source

Apples as enantiospecific bioreagents in the hydrolysis of racemic esters and oxygenation of alcohols obtained during the process

open access: yesActa Societatis Botanicorum Poloniae, 2014
Biotransformation carried out by apples (Malus silvestris) resulted in enantiospecific hydrolysis of racemic acetates, the derivatives of secondary aromatic-aliphatic or terpenic alcohols. The alcohols are oxygenated to ketones (reversible reaction). The
Agnieszka Mironowicz
doaj   +1 more source

Effect of ethyl acetate extract of usnea longissima on esophagogastric adenocarcinoma in rats [PDF]

open access: yesActa Cirúrgica Brasileira, 2019
Purpose: To investigate the effects of the EtOAc extract of U. longissima which is uninvestigated previously on esophagogastric cancer induced in rats with N-methyl-N-nitro-N-nitrosoguanidin (MNNG). Methods: The anticancer activity of EtOAc extract of
Renad Mammadov   +9 more
doaj   +2 more sources

A method for the rapid qualitative and quantitative analysis of 4,4-dimethyl sterols

open access: yesJournal of Lipid Research, 1973
A simple and relatively rapid technique has been developed for the separation of several 4,4-dimethyl steryl acetates, some of which contain sterically hindered nuclear double bonds.
G.F. Gibbons   +2 more
doaj   +1 more source

Ophiostomatoid fungi synergize attraction of the Eurasian spruce bark beetle, Ips typographus to its aggregation pheromone in field traps

open access: yesFrontiers in Microbiology, 2022
Eurasian spruce bark beetle, Ips typographus is a destructive pest of the Norway spruce (Picea abies). Recent outbreaks in Europe have been attributed to global warming and other anthropogenic impacts.
Anna Jirošová   +5 more
doaj   +1 more source

Substrate specific hydrolysis of aromatic and aromatic-aliphatic esters in orchid tissue cultures

open access: yesActa Societatis Botanicorum Poloniae, 2014
We found that tissue cultures of higher plants were able, similarly as microorganisms, to transform low-molecular-weight chemical compounds. In tissue cultures of orchids (Cymbidium 'Saint Pierre' and Dendrobium phalaenopsis) acetates of phenols and ...
Agnieszka Mironowicz   +2 more
doaj   +1 more source

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