Results 51 to 60 of about 2,355 (106)

Novel MCM-41 Supported Dicationic Imidazolium Ionic Liquids Catalyzed Greener and Efficient Regioselective Synthesis of 2-Oxazolidinones from Aziridines and Carbon Dioxide

Molecules, 2022
A type of MCM-41 supported dicationic imidazolium ionic liquid nanocatalyst has been synthesized and found to be competent for the synthesis of 2-oxazolidinones through the sustainable chemical conversion of CO2 with aziridines.
Yulin Hu, Lili Yang, Xiaobing Liu
doaj   +1 more source

Synthetic Strategies for the Construction of Cyclobutane‐Fused Heterocycles

European Journal of Organic Chemistry, EarlyView.
Cyclobutane‐fused heterocycles are important motifs commonly present in bioactive compounds, recognized for their rigid 3D structures that confer unique properties. However, synthesizing these compounds remains challenging. This review discusses current methods for their synthesis, such as photochemical, metal‐catalyzed, and Lewis acid‐mediated [2 + 2]
Michela Vargiu, Mauro Uras, Angelo Frongia   +2 more
wiley   +1 more source

Oxaziridines: Versatile Reagents in Modern Organic Synthesis

The Chemical Record, EarlyView.
Being capable of transferring an O atom and N‐group/atom, oxaziridines are considered multitasking agents. These are employed for diverse organic transformations, such as epoxidation of olefins, α‐ and γ‐hydroxylation/amination of carbonyl compounds, oxidation of sulfides, [3+2]cycloaddition with unsaturated systems.
Ajeet Chandra, Subba Rao Cheekatla, Keshaba Nanda Parida   +2 more
wiley   +1 more source

Urban ants as potential mechanical vectors of pathogenic and antibiotic‐resistant bacteria in a Brazilian hospital

Medical and Veterinary Entomology, EarlyView.
Nine ant taxa were identified in a Brazilian hospital, with Tapinoma melanocephalum and Dorymyrmex brunneus being the most abundant. Eighty‐five percent of collected ants yielded detectable bacterial growth, including clinically relevant genera such as Acinetobacter, Pseudomonas, Escherichia coli and Pluralibacter.
Luana Biggi Souza, Anny Karoliny de Lima Dionisio, Mayara Acioli Cedrim, Luiz Carlos Silva Dias Neto, Ellymaira Freitas Pontes, Yáskara Veruska Ribeiro Barros, Renato Júnior Cavalcante da Silva, Ênio Jose Bassi, Jacques Hubert Charles Delabie, Ana Lucia Biggi Souza, Leticia Anderson   +10 more
wiley   +1 more source

Adition of 2-oxazolidinones to arylidenecyclopropanes: A highly efficient method for the preparation of GEM-aryl disubstituted homoallylic oxazolidinones

, 2005
The copper-catalyzed reaction of arylidenecyclopropanes (1) with 2-oxazolidinone (2) gave the corresponding homoallylic oxazolidinones (3) in good to high yields.
Siriwardana, Amal I., Kathriarachchi, Kalum K.A.D.S., Yamamoto, Yoshinori, Nakamura, Itaru   +3 more
core   +1 more source

Patterns of Drug Resistance, Drug Resistance Conferring Mutations and Genomic DNA Methylation Revealed in Mycobacterium tuberculosis From South Africa

Tropical Medicine &International Health, EarlyView.
ABSTRACT Tuberculosis remains a major public health threat globally, with drug‐resistant strains undermining treatment efficacy. We analyzed 126 Mycobacterium tuberculosis (M. tuberculosis) isolates with diverse drug resistance spectra and selected 35 for whole genome sequencing (WGS) using Illumina NextSeq, SMRT PacBio Onso and SMRT PacBio Revio ...
Unarine Matodzi, Awelani Mutshembele, Eric Mensah, Dillon Muzondiwa, Ndivhuho A. Makhado, Oleg N. Reva   +5 more
wiley   +1 more source

Drug monitoring and individual dose optimization of antimicrobial drugs: oxazolidinones

, 2016
INTRODUCTION: Oxazolidinones are synthetic antibiotics with bacteriostatic activity against Gram-positive pathogens. Linezolid, the first marketed oxazolidinone, has shown also activity against Mycobaterium tuberculosis, including multidrug-resistant and
Cattaneo, Dario, Alffenaar, Jan-Willem, Neely, Michael   +2 more
core   +1 more source

Formation of Enantiopure 5-Substituted Oxazolidinones through Enzyme-Catalysed Kinetic Resolution of Epoxides [PDF]

, 2008
Halohydrin dehalogenase from Agrobacterium radiobacter catalyzed the enantioselective ring opening of terminal epoxides with cyanate as a nucleophile, yielding 5-substituted oxazolidinones in high yields and with high enantiopurity (69-98% ee).
Meetsma, Auke, Majeric Elenkov, Maja, Hauer, Bernhard, Meetsma, Auke,, Majerić Elenkov, Maja,, Tang, Lixia, Janssen, Dick B., Tang, Lixia,, Hauer, Bernhard,, Janssen, Dick B.,   +9 more
core   +3 more sources

Empirical Meropenem Versus Piperacillin/Tazobactam for Critically Ill Adults With Sepsis: Feasibility of a Randomised Trial

Acta Anaesthesiologica Scandinavica, Volume 70, Issue 9, October 2026.
ABSTRACT Background Meropenem and piperacillin/tazobactam are commonly used empirical antibiotics in critically ill adults with sepsis, but whether one is superior to the other is uncertain. Methods The Empirical Meropenem versus Piperacillin/Tazobactam for Adult Patients with Sepsis (EMPRESS) trial is an ongoing investigator‐initiated, randomised ...
Nick Frørup Meier, Morten Hylander Møller, Maj‐Brit Nørregaard Kjær, Fredrik Sjövall, Marie Warrer Munch, Benjamin Skov Kaas‐Hansen, Hans‐Christian Thorsen‐Meyer, Bodil Steen Rasmussen, Marie Helleberg, Frederik Boëtius Hertz, Theis Lange, Aksel Karl Georg Jensen, Lars Wiuff Andersen, Jakob Steen Andersen, Jens Michelsen, Lars Peter Kloster Andersen, Morten Heiberg Bestle, Anne Craveiro Brøchner, Theis Skovsgaard Itenov, Steffen Christensen, Ronni Thermann Reitz Plovsing, Klaus Ulrik Koch, Anders Møller, Olav Lilleholt Schjørring, Naia Bech Cranø, Kasper Vamdrup‐Andersen, Davide Placido, Tine Sylvest Meyhoff, Carl Thomas Anthon, Aske Tøgern, Milda Grigonyte‐Daraskeviciene, Zemira Engbakken, Anne Witte Kamstrup, Kis Rønn Uhre, Jehad Ahmad Barakji, Rikke Faebo Larsen, Anders Perner, Anders Granholm   +37 more
wiley   +1 more source

Antimicrobial activity of linezolid against Gram-positive cocci isolated in Brazil

Brazilian Journal of Infectious Diseases
The new oxazolidinone linezolid and other antimicrobial agents used to treat Gram-positive infections were tested against 1,585 Gram-positive cocci; 1,260 staphylococci and enterococci isolates from patients hospitalized in Brazilian hospitals, and 325 S.
Helio S. Sader, Ana C. Gales, Ronald N. Jones   +2 more
doaj   +1 more source