Results 71 to 80 of about 3,529 (194)
Molecules, 2001 A variety of novel [1,2,4]triazolo[1,5-c]pyrimidine-13-ones (4a-f) and (5b-d) could be obtained via reaction of 9-amino-7-(4’-chlorophenyl)-8,9-dihydro-8-imino-6H,7H-[1]benzopyrano[3`,4`:5,6]pyrano[2,3-d]pyrimidine-6-one (3) with a variety of ...
A. H. Bedair +4 more
doaj +1 more source
Plant‐Derived Polyphenols for Sustainable Flame‐Retardant Coatings
Chemistry–Methods, Volume 6, Issue 1, January 2026.This review compares plant‐derived polyphenolic flame retardants by synthesizing literature on their mechanisms, synergistic effects, and performance across polymers, wood, fibers, and coatings, while examining biodegradability, life cycle assessment, safe‐and‐sustainable‐by‐design, and consistency with circular‐economy principles for sustainable fire ...
Myeongjun Song, Woo Rin Lee, Kyueui Lee
wiley +1 more source
Molecules, 2019 Coumarins are an important class of natural heterocyclic compounds that have attracted considerable synthetic and pharmacological interest due to their various biological activities.
Ana I. Koleva +2 more
doaj +1 more source
Food Frontiers, Volume 7, Issue 1, January 2026.ABSTRACT Dysregulation of the nuclear factor kappa B (NF‐κB) signaling pathway is closely associated with inflammation‐driven carcinogenesis, tumor progression and resistance to conventional therapies. Sustained NF‐κB activation enhances malignant cell survival, proliferation and immune evasion by promoting proinflammatory and antiapoptotic gene ...
Maria Sharif +10 more
wiley +1 more source
Cleavages of photochromic compounds derived from heterocycles under electrospray tandem mass spectrometry : study of the influence of the heteroatom in fragmentation mechanisms [PDF]
, 2010 In this paper we report the fragmentation pathways of chromenes derived from carbazole, dibenzofuran and dibenzothiophene, under ESI-MS/MS experimental conditions, and their relationship with structural features, specially focused on the heteroatom’s ...
Campos, Ana M. F. Oliveira +5 more
core
Palladium-catalyzed and electrophilic cyclization approaches to carbocycles and heterocycles [PDF]
, 2008 Palladium-catalyzed and electrophilic cyclization reactions are among the most studied in synthetic organic chemistry. However, these methodologies cannot always be generally applied to obtain good yields of a desired class of compounds.
Worlikar, Shilpa Arvind
core +3 more sources
Glutamate Receptors and Synaptic Plasticity in Health and Disease: A Personal Journey
Hippocampus, Volume 36, Issue 1, January 2026.ABSTRACT I describe my progress in understanding synaptic plasticity in the hippocampus. Over the decades my lab has focused on the roles of glutamate receptors (AMPARs, NMDARs, mGluRs and KARs) and associated signaling molecules in LTP and LTD. Most of our studies have been conducted in area CA1 (Schaffer collateral—commissural pathway) with some ...
Graham L. Collingridge
wiley +1 more source
Bioactive 4-hydroxycinnamide and bioactivities of Polyalthia cerasoides [PDF]
Constituents from Polyalthia cerasoides, stem bark methanol extract, were previously documented. This study reports the first isolation of bioactive N-(4-hydroxy-β-phenethyl)-4-hydroxycinnamide (1) from ethyl acetate extract of the plant species ...
Kiatfuengfoo, Rachada +6 more
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Metal triflates catalyzed efficient synthesis of 3,4-dihydro-2H-1-benzopyrans [PDF]
, 2002 Ytterbium triflate efficiently catalyzes an unusual cyclization of o-hydroxybenzaldehydes with 2,3-dihydrofuran and 3,4-dihydro-2H-pyran in the presence of trimethyl orthoformate at ambient temperature to afford a new class of compounds, furo- and pyrano[
Aruna, M. +6 more
core +1 more source
Synthesis and transformation of halochromones [PDF]
, 2014 Chromones (4H-1-benzopyran-4-ones) are one of the most abundant groups of naturally occurring oxygen containing heterocyclic compounds possessing a benzo-γ-pyrone framework, 1a.
Santos, Clementina M.M. +2 more
core +1 more source