Results 121 to 130 of about 50,342 (276)

Copper‐ and Silver‐Catalyzed Reactions of Active Methylene Isocyanides: Facile Access to Highly Substituted Five‐ and Six‐Membered Heterocycles

open access: yesChemistry – A European Journal, EarlyView.
This review summarizes recent advances in copper‐ and silver‐catalyzed reactions of active methylene isocyanides for the synthesis of highly substituted five‐ and six‐membered heterocycles. Emphasis is placed on [3+n] cycloadditions, annulations, and asymmetric strategies, highlighting current limitations and future opportunities in heterocycle ...
Jimil George, Kyungsoo Oh
wiley   +1 more source

Alkaloids, Coumarins and Lignans from Haplophyllum Species [PDF]

open access: yes, 2008
Although there are a number of Haplophyllum species in the world, H. acutifolium (DC.) G. Don, H. buxbaumii (Poiret) G.Don, H. buxbaumii (Poiret) G.Don, subsp. Buxbaumii, H. cappadocium Spach, H. glabrinum, H. hispanicum Sprach, H. myrtifolium Boiss., H.
Ayhan Ulubelen, Mehmet Öztürk
core  

Pharmacokinetic Evaluation of a Cinnamon Product on CYP2A6 Substrate Drugs: Application of a Novel Tool Involving the Nicotine Metabolite Ratio

open access: yesClinical Pharmacology &Therapeutics, EarlyView.
Cinnamon (Cinnamomum spp.) is used as a culinary spice and dietary supplement. A major constituent, cinnamaldehyde, was previously shown to inactivate cytochrome P450 (CYP) 2A6 in vitro. A mechanistic static model predicted an ~5‐fold increase in the AUC of the CYP2A6 substrates nicotine and letrozole.
Aiden‐Hung P. Nguyen   +8 more
wiley   +1 more source

Evaluation of anti-microbial potential of hydroxycoumarins [PDF]

open access: yes, 2013
Coumarins comprise a very large class of substances found in plants and are made of fused benzene and α-pyrone rings. More than 1300 coumarins have been identified, principally as secondary metabolites in green plants but also in fungi and bacteria ...
Caldeira, Ana   +4 more
core  

Boosting Water Vapor‐Assisted Methane Photooxidation Over S‐Scheme MIL‐125‐NH2(Ti)/WO3 Heterojunction Photocatalysts

open access: yesEcoEnergy, EarlyView.
The MIL‐125‐NH2(Ti)/WO3‐x S‐scheme heterostructure was constructed via electrostatic self‐assembly, strategically aligning energy bands to optimize interfacial charge transfer and ·OH generation for C–H activation. The optimized MW‐3 demonstrates exceptional CH4 photooxidation activity using water vapor as a sustainable oxidant, achieving a remarkable ...
Jia‐Min Cao   +8 more
wiley   +1 more source

Molten Zinc Coordination Polymer Glass as a Host for Stable and Processable Optical Dye Composites

open access: yesEcoEnergy, EarlyView.
Zinc‐based coordination polymer glass is employed to suppress aggregation‐caused quenching (ACQ) and enhance molecular stability, enabling improved luminescence performance in the solid state. The emission color of the hybrid composites can be tuned by varying the incorporated guest molecules, while the glass matrix effectively prevents aggregation and
Jaeho Lee   +10 more
wiley   +1 more source

Animal poisonings in Belgium: a review of the past decade [PDF]

open access: yes, 2010
This review focuses on poisonings in companion animals, including horses, farm animals and wildlife, investigated and recorded during the past ten years at the Laboratory of Toxicology of the Faculty of Veterinary Medicine (Ghent University) and the ...
Croubels, Siska   +3 more
core   +1 more source

MELD score predicts outcomes in patients with advanced heart failure: A longitudinal evaluation

open access: yesESC Heart Failure, Volume 12, Issue 2, Page 839-847, April 2025.
Abstract Aims Advanced heart failure (AHF) is characterized by recurrent episodes of haemodynamic instability and frequent hospitalizations, leading to a progressive decline in quality of life and high mortality rates. The objectives of this study were to evaluate the effect of the model for end‐stage liver disease (MELD) score and its variations in ...
Francesco Curcio   +10 more
wiley   +1 more source

A Comprehensive Review on Nutrition, Phytochemistry, Pharmacology and Food Application Perspectives of Bioactive Rich Superfruits

open access: yesFuture Postharvest and Food, EarlyView.
The review critically evaluated and compared the selected superfruit phytochemistry, their bioactive composition and the key health benefits majorly emphasizing the antioxidant potential. It has highlighted the translational challenges in formulating functional foods by addressing the issues related to delivery system, bioavailability mechanism and the
Sharath Kumar Nagaraja   +3 more
wiley   +1 more source

Evaluation of the Antioxidant Activity of New Coumarin Derivatives by Cyclic Voltammetry [PDF]

open access: yes, 2010
Free radicals, species with one or more unpaired electrons are produced in normal or pathological cell metabolism, from xenobiotics, or trough ionizing radiation.
Martins, Sérgio   +3 more
core  

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