Results 91 to 100 of about 14,691 (260)

Two New Pyrone Derivatives from the Plant Endophytic Fungus sp

open access: yesNatural Product Communications, 2014
Two new α-pyrones, Exserolide G–H (1–2) , together with one known metabolite, stemphypyrone (3) , were isolated from the solid-substrate fermentation cultures of the plant endophytic fungus Exserohilum sp.
Ruxin Li   +3 more
doaj   +1 more source

Whole-genome sequencing of Aspergillus tubingensis G131 and overview of its secondary metabolism potential

open access: yesBMC Genomics, 2018
Background Black Aspergilli represent one of the most important fungal resources of primary and secondary metabolites for biotechnological industry.
Elodie Choque   +4 more
doaj   +1 more source

4-Hydroxy-6-alkyl-2-pyrones as nucleophilic coupling partners in Mitsunobu reactions and oxa-Michael additions

open access: yesBeilstein Journal of Organic Chemistry, 2014
Two mild and efficient strategies have been developed for the O-functionalisation of 4-hydroxy-6-alkyl-2-pyrones, by using them as nucleophilic partners in oxa-Michael additions and the Mitsunobu reaction.
Michael J. Burns   +3 more
doaj   +1 more source

Structural study of the interaction of vanadate with the ligand 1,2-dimethyl-3-hydroxy-4-pyridinone (Hdmpp) in aqueous solution [PDF]

open access: yes, 2000
The interaction of vanadate with the ligand 1,2-dimethyl-3-hydroxy-4-pyridinone (Hdmpp) was studied in aqueous solution using a combination of multinuclear NMR and EPR spectroscopies, as well as potentiometry and cyclic voltammetry. The different species
Castro, M. M. C. A.   +5 more
core   +2 more sources

Effects of Trichoderma treatments on the phenolic and sensory quality of Aglianico grapes and wine

open access: yesJournal of the Science of Food and Agriculture, Volume 106, Issue 1, Page 185-194, 15 January 2026.
Abstract BACKGROUND As environmental awareness grows, interest in sustainable agriculture is increasing. A promising alternative is the use of plant‐beneficial microorganisms such as Trichoderma spp., which suppress pathogens, promote growth and enhance productivity. In viticulture, Trichoderma species have been studied mainly for pathogen control, but
Maria Tiziana Lisanti   +8 more
wiley   +1 more source

A simplified search strategy for identifying randomised controlled trials for systematic reviews of health care interventions: a comparison with more exhaustive strategies [PDF]

open access: yes, 2005
Background It is generally believed that exhaustive searches of bibliographic databases are needed for systematic reviews of health care interventions. The CENTRAL database of controlled trials (RCTs) has been built up by exhaustive searching.
Norman Waugh, Pamela Royle
core   +3 more sources

Pyrone Biomonitored Synthesis

open access: yesJournal of the Mexican Chemical Society
Abstract. Here we report the first biomonitored synthesis of pyrones in the search for molecules with antimicrobial action against pathogenic bacteria and fungi. Pyrones were synthesized from methyl acetoacetate pyrone rings followed by deacetylation, methylation, and aldol condensation reactions to obtain styrylpyrones with yields between 39 and 93 %.
Clécio Souza Ramos   +1 more
openaire   +1 more source

Activation of the Nuclear Factor E2-Related Factor 2 Pathway by Novel Natural Products Halomadurones A–D and a Synthetic Analogue

open access: yesMarine Drugs, 2013
Two novel chlorinated pyrones, halomadurones A and B, and two novel brominated analogues, halomadurones C and D, were isolated from a marine Actinomadura sp. cultivated from the ascidian Ecteinascidia turbinata.
Thomas P. Wyche   +6 more
doaj   +1 more source

Fungal naphtho-γ-pyrones: Potent antibiotics for drug-resistant microbial pathogens

open access: yesScientific Reports, 2016
Four naphtho-γ-pyrones (fonsecinones A and C and aurasperones A and E) were identified as potential antibacterial agents against Escherichia coli, extended-spectrum β-lactamase (ESBL)-producing E.
Yan He   +11 more
semanticscholar   +1 more source

Degradation of Chloroaromatics: Purification and Characterization of a Novel Type of Chlorocatechol 2,3-Dioxygenase of Pseudomonas putida GJ31 [PDF]

open access: yes, 1998
A purification procedure for a new kind of extradiol dioxygenase, termed chlorocatechol 2,3-dioxygenase, that converts 3-chlorocatechol productively was developed.
Janssen, Dick B.,   +5 more
core   +2 more sources

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