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Biosynthesis of phoslactomycins: cyclohexanecarboxylic acid as the starter unit

Tetrahedron, 2003
Abstract Phoslactomycins (PLMs) A–F, produced by actinomycetes are polyketide-type antibiotics derived from a hydroxycyclohexanecarboxylic acid or a cyclohexanecarboxylic acid starter unit. Feeding experiments with [2-13C]shikimic acid indicated that the C-18 carbon of PLMs comes from C-5 of shikimate.
Hiroyuki Osada   +3 more
openaire   +2 more sources

Determination of Naphthenic Acids in Oil Sand Processed Water by Two-Dimensional Gas Chromatography with Quadrupole Time-of-Flight Mass Spectrometry (2D GC-QTOFMS)

Analytical Letters, 2021
Two-dimensional gas chromatography (2D GC)–quadrupole time-of-flight mass spectrometry (QTOFMS) combined with derivatization was applied to determine naphthenic acids (NAs) in oil sand processed water (OSPW).
Chenyu Qian   +4 more
semanticscholar   +1 more source

Kinetics and mechanism of coupled synthesis of cyclohexanecarboxylic acid

Russian Journal of Physical Chemistry A, 2015
The effect of the nature of the anion in a palladium salt on a coupled process involving the oxidation of CO and hydrocarboxylation of cyclohexene in the PdX2-CuBr2-THF-H2O system was studied. The kinetics was investigated under the steady-state conditions.
O. N. Temkin   +9 more
openaire   +2 more sources

Urinary excretion of benzoic acid and hippuric acid in sheep given ruminal infusion of 3-phenylpropionic and cyclohexanecarboxylic acids

Proceedings of the British Society of Animal Science, 1996
Microbial fermentation of lignoceluUosic feeds in the rumen produces 3-phenylpropionic (PPA) and cyclohexanecarboxylic (CHCA) acids. Feed phenolic cinnamic acids are regarded as the main precursors of PPA upon microbial action (Martin 1982b). CHCA can be
J. H. Pagella   +3 more
semanticscholar   +1 more source

The aromatization of cyclohexanecarboxylic acid to hippuric acid: substrate specificity and species differences

Molecular and Cellular Biochemistry, 1985
The ability to convert cyclohexanecarboxylic acid to hippuric acid has been studied in liver from guinea pigs, rabbits, rats and mice using a gas chromatographic - mass spectrometric method employing selected ion monitoring. Guinea pig liver showed the highest activity, giving values double of those found in rabbit liver and five times those in rat ...
Asbjørn Svardal, Ronald R. Scheline
openaire   +3 more sources

Molecular Conformations of 4-Aminomethyl-1-cyclohexanecarboxylic Acids in Aqueous Solution

, 1981
The structures of cis- and trans-4-aminomethyl-1 -cyclohexanecarboxylic acids were studied by proton and carbon-13 NMR, and by semiempirical molecular orbital methods (CNDO/2 and MNDO). Both isomers exist in zwitter ionic forms in aqueous solution.
M. Yanaka   +3 more
semanticscholar   +1 more source

Pharmacological insights into the multifaceted biological properties of quinic acid

Biotechnology & Genetic Engineering Reviews, 2022
Quinic acid is a cyclohexanecarboxylic acid contained in the extracts of several parts of medicinal plants including Haematocarpus validus, Hypericum empetrifolium, Achillea pseudoaleppica, Rumex nepalensis, Phagnalon saxatile subsp.
T. Benali   +10 more
semanticscholar   +1 more source

The assignment of the correct structures and conformational analysis of the isomeric t-5- and t-4-phenyl-t(c)-2-benzoyl-r-1-cyclohexanecarboxylic acids by NMR and FT-IR spectroscopy

, 2000
The AlCl3 catalysed addition of benzene to cis-2-benzoylcyclohex-4-enecarboxylic acid results in the product, t-5-phenyl-c-2-benzoyl-r-1-cyclohexanecarboxylic acid (2), but not in its 2-trans epimer (5) as has been reported previously in the literature ...
K. Klika   +6 more
semanticscholar   +1 more source

Diversions of the Shikimate Pathway — The Biosynthesis of Cyclohexanecarboxylic Acid

1992
The shikimic acid pathway1 has evolved in plants and microorganisms to provide for the synthesis of the aromatic amino acids, phenylalanine, tyrosine and tryptophan, as well as a number of other essential aromatic compounds, e.g., jo-aminobenzoic acid, the precursor of folic acid, or]D-hydroxybenzoic acid, the precursor of ubiquinone.
Karl Poralla   +17 more
openaire   +2 more sources

Degradation of cyclohexanecarboxylic acid as a model naphthenic acid by the UV/chlorine process: Kinetics and by-products identification

Journal of Hazardous Materials, 2021
Degradation kinetics, by-products identification and pathways of a model naphthenic acid, cyclohexanecarboxylic acid (CHA), by the UV/Chlorine process were investigated in this study. Mathematical modeling indicated that the initial CHA decay rate increased rapidly with the chlorine dose when the chlorine dose was lower than 45 mg/L and decreased with ...
Mohamed Gamal El-Din   +5 more
openaire   +3 more sources

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