Results 41 to 50 of about 4,994,766 (232)

Microbial Degradation of α-Picolinic Acid, 2-Pyridinecarboxylic Acid

Agricultural and Biological Chemistry, 1981
(1981). Microbial Degradation of α-Picolinic Acid, 2-Pyridinecarboxylic Acid. Agricultural and Biological Chemistry: Vol. 45, No. 8, pp. 1879-1880.
Mayumi Namikawa, Yasuko Inoue, Masahiro Ohsugi, Keiko Takami   +3 more
openaire   +3 more sources

Identifying the True Catalyst: A Mn(II) Salt versus Mn(II) Complexes in Epoxidation with m‐Chloroperbenzoic Acid

European Journal of Organic Chemistry, Accepted Article.
The oxidant meta‐chloroperbenzoic acid (m‐CPBA) is used widely for the epoxidation of alkenes, yet its efficiency is often limited under ambient conditions. In this study we investigate the catalytic activity of a Mn(II) salt and mononuclear Mn(II) complexes, two of which are reported here for the first time, in the epoxidation of alkenes with m‐CPBA ...
Milica Savić, Aleksandra Mitrović, Božidar Čobeljić, Andrej Pevec, Matija Zlatar, Maja Gruden, Wesley R. Browne, Marika Di Berto Mancini   +7 more
wiley   +1 more source

Nature's Starships. I. Observed Abundances and Relative Frequencies of Amino Acids in Meteorites [PDF]

, 2014
The class of meteorites called carbonaceous chondrites are examples of material from the solar system which have been relatively unchanged from the time of their initial formation. These meteorites have been classified according to the temperatures and physical conditions of their parent planetesimals.
arxiv   +1 more source

Electrochemical Hydrogenation of N‐Heterocycles and Related Substrates: A Mini‐Review

Electrochemical Science Advances, EarlyView.
ABSTRACT Catalytic hydrogenation refers to the (often) metal‐mediated addition of dihydrogen (H2) equivalents to unsaturated compounds to form new element‐hydrogen bonds. This conceptually simple reaction is ubiquitous in the production of a vast number of essential chemicals.
Esteban Garcia‐Torres, David E. Herbert   +1 more
wiley   +1 more source

The effects of carboxylic acids on the aqueous dispersion and electrophoretic deposition of ZrO2 [PDF]

Journal of the European Ceramic Society, Volume 32, Issue 1, 2012, Pages 235-244, 2013
The agglomeration, electrokinetic properties and electrophoretic deposition behaviour of aqueous suspensions of ZrO2 with carboxylic acid additives were studied in comparison with conventional pH adjustment. It was found that citric acid imparted negative zeta-potential values and electrosteric stabilisation to particles in suspensions at all pH levels.
arxiv   +1 more source

Association between prediagnostic serum metabolites and pancreatic ductal adenocarcinoma risk in two prospective cohorts

International Journal of Cancer, EarlyView.
What's New? Exposures and mechanisms that contribute to and promote pancreatic ductal adenocarcinoma (PDAC) remain unclear. In this study, the authors applied metabolomics to better understand PDAC etiology by examining associations between prediagnostic serum metabolites and PDAC risk.
Ting Zhang, Steven C. Moore, Sheng Fu, Xiaoyu Wang, Demetrius Albanes, Stephanie J. Weinstein, Kai Yu, Rachael Z. Stolzenberg‐Solomon   +7 more
wiley   +1 more source

Pyrazinoic acid, the active form of the anti-tuberculosis drug pyrazinamide, and aromatic carboxylic acid analogs are protonophores

Frontiers in Molecular Biosciences
Pyrazinoic acid is the active form of pyrazinamide, a first-line antibiotic used to treat Mycobacterium tuberculosis infections. However, the mechanism of action of pyrazinoic acid remains a subject of debate, and alternatives to pyrazinamide in cases of
Fabio L. Fontes, Fabio L. Fontes, Steven A. Rooker, Jamie K. Lynn-Barbe, Michael A. Lyons, Debbie C. Crans, Debbie C. Crans, Dean C. Crick, Dean C. Crick   +8 more
doaj   +1 more source

Biosynthesis of Mycotoxin Fusaric Acid and Application of a PLP-Dependent Enzyme for Chemoenzymatic Synthesis of Substituted l-Pipecolic Acids.

Journal of the American Chemical Society, 2020
Fusaric acid (FA) is a well-known mycotoxin that plays an important role in plant pathology. The biosynthetic gene cluster for FA has been identified, but the biosynthetic pathway remains unclarified.
Y. Hai, Mengbing Chen, Arthur Huang, Yi Tang   +3 more
semanticscholar   +1 more source

ChemInform Abstract: Electrochemical Synthesis of Nicotinic Acid from β‐Picoline.

ChemInform, 1989
Department of Chemistry, Kashmir University, Srinagar-190 006 Manuscript received 18 February 1988, revised 19 May 1988, accepted 8 June 1988 Electrosyathesis or nicotinic acid from -picoline by potentiostatic oxidation is reported. Efficencies of different electrodes are compared by considering changes in concentration of anolyte and substrate ...
P. N. Gupta, G. M. Rather
openaire   +3 more sources

Origin and characterization of cyclodepsipeptides: Comprehensive structural approaches with focus on mass spectrometry analysis of alkali‐cationized molecular species

Mass Spectrometry Reviews, EarlyView.
Abstract Cyclodepsipeptides (CDPs) represent a huge family of chemically and structurally diverse molecules with a wide ability for molecular interactions. CDPs are cyclic peptide‐related natural products made up of both proteinogenic and nonproteinogenic amino acids linked by amide and ester bonds.
Sophie Liuu, Annelaure Damont, Alain Perret, Olivier Firmesse, François Becher, Gwenaëlle Lavison‐Bompard, Amandine Hueber, Amina S. Woods, Ekaterina Darii, François Fenaille, Jean‐Claude Tabet   +10 more
wiley   +1 more source