Results 71 to 80 of about 1,006 (183)

Stereoselective Synthesis of α‐Azido Esters and α‐Amino Acid Derivatives via Matteson Homologation of Boronic Esters

Zeitschrift für anorganische und allgemeine Chemie, Volume 650, Issue 21, November 4, 2024.
Abstract Matteson homologation with sodium azide in DMF proved to be an excellent highly stereoselective tool for the synthesis of complex α‐azido and α‐amino acids. Both enantiomers are easily accessible via the choice of the chiral boronic ester auxiliary.
Alexander Horn, Emanuel Papadopoulos, Thorsten Kinsinger, Jennifer Greve, Etienne Bickel, Stavroula Pachoula, Uli Kazmaier   +6 more
wiley   +1 more source

Influence of regional and yearly weather patterns on multi‐mycotoxin occurrence in Austrian wheat: a liquid chromatographic–tandem mass spectrometric and multivariate statistics approach

Journal of the Science of Food and Agriculture, Volume 104, Issue 13, Page 7788-7796, October 2024.
Abstract BACKGROUND Mycotoxin surveys play an essential role in our food safety system. The obtained occurrence data form the basis for the assessment of the exposure of humans and animals to these toxic fungal secondary metabolites. Liquid chromatography coupled with tandem mass spectrometry (LC‐MS/MS) has become the gold standard for mycotoxin ...
Stephan Freitag, Michael Sulyok, Elisabeth Reiter, Maximilian Lippl, Klemens Mechtler, Rudolf Krska   +5 more
wiley   +1 more source

Inhibition of Virulence Gene Expression in Staphylococcus aureus by Novel Depsipeptides from a Marine Photobacterium

Marine Drugs, 2011
During a global research expedition, more than five hundred marine bacterial strains capable of inhibiting the growth of pathogenic bacteria were collected.
Lone Gram, Hanne Ingmer, Louise Kjærulff, Charlotte H. Gotfredsen, Matthias Wietz, Anita Nielsen, Thomas O. Larsen, Maria Mansson   +7 more
doaj   +1 more source

Production of Destruxins by Coprotrophic Beauveria feline No. 7 Strain

Антибиотики и Химиотерапия, 2020
Beauveria feline No. 7 strain was isolated from the shrewmouse wool and characterized by production of a complex of destruxins cyclodepsipeptides. The strain was shown to produce significant quatities of destruxin B and pseudodestruxin C.
M. V. Bibikova, T. O. Puzhevskaya, A. N. Danilenko, I. A. Spiridonova, G. V. Zatonsky, A. V. Aleksandrova, A. V. Katlinsky   +6 more
doaj  

Aspergillus niger is a superior expression host for the production of bioactive fungal cyclodepsipeptides

Fungal Biology and Biotechnology, 2018
Background Fungal cyclodepsipeptides (CDPs) are non-ribosomally synthesized peptides produced by a variety of filamentous fungi and are of interest to the pharmaceutical industry due to their anticancer, antimicrobial and anthelmintic bioactivities ...
Simon Boecker, Stefan Grätz, Dennis Kerwat, Lutz Adam, David Schirmer, Lennart Richter, Tabea Schütze, Daniel Petras, Roderich D. Süssmuth, Vera Meyer   +9 more
doaj   +1 more source

Cation Dependence of Enniatin B/Membrane‐Interactions Assessed Using Surface‐Enhanced Infrared Absorption (SEIRA) Spectroscopy

ChemPlusChem, Volume 89, Issue 8, August 2024.
Enniatins are small, peptidic myotoxins with antimicrobial and anticancer activity. Surface‐enhanced infrared absorption spectroscopy combined with tethered bilayer lipid membranes reveals that ionophoric enniatin B:cation 2 : 1‐complexes with Na+ or K+ incorporate cooperatively or directly into membranes, respectively.
Barbara Daiana Gonzalez, Enrico Forbrig, Guiyang Yao, Patrycja Kielb, Maria Andrea Mroginski, Peter Hildebrandt, Jacek Kozuch   +6 more
wiley   +1 more source

Comparative Structure–Activity Analysis of the Antimicrobial Activity, Cytotoxicity, and Mechanism of Action of the Fungal Cyclohexadepsipeptides Enniatins and Beauvericin

Toxins, 2019
Filamentous fungi, although producing noxious molecules such as mycotoxins, have been used to produce numerous drugs active against human diseases such as paclitaxel, statins, and penicillin, saving millions of human lives.
Hamza Olleik, Cendrine Nicoletti, Mickael Lafond, Elise Courvoisier-Dezord, Peiwen Xue, Akram Hijazi, Elias Baydoun, Josette Perrier, Marc Maresca   +8 more
doaj   +1 more source

Induction of Fusarium lytic Enzymes by Extracts from Resistant and Susceptible Cultivars of Pea (Pisum sativum L.)

Pathogens, 2020
Being pathogenic fungi, Fusarium produce various extracellular cell wall-degrading enzymes (CWDEs) that degrade the polysaccharides in the plant cell wall.
Lakshmipriya Perincherry, Chaima Ajmi, Souheib Oueslati, Agnieszka Waśkiewicz, Łukasz Stępień   +4 more
doaj   +1 more source

Correction to: Aspergillus niger is a superior expression host for the production of bioactive fungal cyclodepsipeptides

Fungal Biology and Biotechnology, 2018
Following publication of the original article [1], the authors reported that there is a mistake in the legend of Figure 4; the explanation of the symbols has been mixed up. The corrected version of Figure 4 is given below.
Simon Boecker, Stefan Grätz, Dennis Kerwat, Lutz Adam, David Schirmer, Lennart Richter, Tabea Schütze, Daniel Petras, Roderich D. Süssmuth, Vera Meyer   +9 more
doaj   +1 more source

Pigmentosins from Gibellula sp. as antibiofilm agents and a new glycosylated asperfuran from Cordyceps javanica

Beilstein Journal of Organic Chemistry, 2019
In the course of our exploration of the Thai invertebrate-pathogenic fungi for biologically active metabolites, pigmentosin A (1) and a new bis(naphtho-α-pyrone) derivative, pigmentosin B (2), were isolated from the spider-associated fungus Gibellula sp.
Soleiman E. Helaly, Wilawan Kuephadungphan, Patima Phainuphong, Mahmoud A. A. Ibrahim, Kanoksri Tasanathai, Suchada Mongkolsamrit, Janet Jennifer Luangsa-ard, Souwalak Phongpaichit, Vatcharin Rukachaisirikul, Marc Stadler   +9 more
doaj   +1 more source