Results 111 to 120 of about 15,473 (263)

Synthesis of Some Phenylpyrazolo Benzimidazolo Quinoxaline Derivatives as Potent Antihistaminic Agents

open access: yesE-Journal of Chemistry, 2010
2,3-Diphenyl quinoxaline (NI) was fused with benzimidazole (NII) by a methylene bridge, which was then allowed for acetylation. The acetylated product (NIV) was made to react with different aromatic aldehydes to give chalcones (NV1-NV5).
C. H. Sridevi   +3 more
doaj   +1 more source

Assessment of synthetic chalcones as cancer chemopreventive agents [PDF]

open access: yes
Cigarette smoking acts as a key source of lung cancer, where the carcinogen malondialdehyde (MDA) produced from cigarette increases the DNA damage.
Jasim, H
core   +1 more source

Deciphering Role of Endophytes in Plant Defences and Biotic Stress Resilience Across Families

open access: yesPlant, Cell &Environment, EarlyView.
ABSTRACT Plant families generate distinct repertoires of specialised metabolites that govern their biotic interactions. Endophytes strengthen host plant defence mechanisms and tolerance to biotic challenges by upregulating metabolite biosynthesis, modifying precursor compounds into more potent forms, or by directly synthesising analogous defence ...
S. Aneeqa Noor   +4 more
wiley   +1 more source

Advances in organic UV filters for sunscreens over the past decade

open access: yesPhotochemistry and Photobiology, EarlyView.
Highlighted organic UV filter frameworks that have been described for sunscreens over the past decade divided into three groups: derivatives of or inspired by approved organic UV filters, natural product‐based compounds, and miscellaneous. Abstract Ultraviolet (UV) radiation is a major environmental factor in photoaging, erythema, and skin cancer ...
Gabriela Zanella Marcon   +4 more
wiley   +1 more source

Bromination of Chalcone

open access: yesARO-THE SCIENTIFIC JOURNAL OF KOYA UNIVERSITY
In this research work, a new compound, namely 2,6-dibromo-2,6-bis(bromo(phenyl)methyl)cyclohexanone (1), is synthesized and characterized for possible applications in organic electronic devices. The formation of the compound was confirmed by Fourier-transform infrared spectroscopy, 1H-, and 13C-NMR spectroscopy measurements.
Kosrat N. Kaka   +3 more
openaire   +3 more sources

Development of chalcones structure‐related to avobenzone: Photoprotection, photostability, and safety evaluation

open access: yesPhotochemistry and Photobiology, EarlyView.
Scaffold hopping strategy used to develop chalcones structure‐related to the avobenzone tautomer. Positive aspects of 2‐hydroxychalcones are highlighted. Abstract Chalcones are α,β‐unsaturated ketones with extended π‐conjugation, making them promising scaffolds for the development of organic UV filters.
Gabriela Zanella Marcon   +11 more
wiley   +1 more source

Strategies Toward Accessing Enantioenriched (Hetero)Benzo‐Fused 5‐ and 6‐ Membered Rings via Intermolecular Carbometalation

open access: yesAngewandte Chemie, Volume 138, Issue 23, 1 June 2026.
The use of transition‐metal catalysts and design of chiral ligands have allowed chemists to access highly functionalized benzofused 5‐ and 6‐ membered rings in high yield and enantioselectivity. A common strategy used relies on an intermolecular carbometalation across alkynes and olefins, usually followed by a subsequent intramolecular carbometalation.
Clara Jans   +3 more
wiley   +2 more sources

Stenotrophomonas maltophilia: A Gram-Negative Bacterium Useful for Transformations of Flavanone and Chalcone

open access: yesMolecules, 2017
A group of flavones, isoflavones, flavanones, and chalcones was subjected to small-scale biotransformation studies with the Gram-negative Stenotrophomonas maltophilia KB2 strain in order to evaluate the capability of this strain to transform flavonoid ...
Edyta Kostrzewa-Susłow   +4 more
doaj   +1 more source

Synthesis of heterocyclic chalcones and their novel pyrazoline derivatives [PDF]

open access: yes, 2015
Chalcones are open-chain flavanoids possessing a basic scaffold of two aromatic rings linked by a three carbon α,β-unsaturated carbonyl system.
Liew, Suk Ming
core  

Chalcones: compounds possessing a diversity in applications

open access: yes, 2012
Chalcones are a class of α, β- unsaturated carbonyl compounds that form the central core for a variety of naturally occurring biologically active compounds. They exhibit tremendous potential to act as a pharmacological agent.
Urmila Berar
core   +1 more source

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