Results 111 to 120 of about 40,846 (271)

Sequential Carboborylation–Suzuki Coupling of α,β‐Unsaturated Tosylhydrazones: A Dual CC Bond‐Forming Strategy for Molecular Diversification

open access: yesChemistryEurope, Volume 4, Issue 1, January 2026.
Structural diversity can be generated from α,β‐unsaturated carbonyls via N‐tosylhydrazones through a one‐pot‐three‐component photochemically promoted carboborylation/allylic Suzuki sequence. The wide availability and scope regarding each of three reaction partners: carbonyls, alkylboronic acids, and aryl halides, and the functionalities available in ...
Álvaro Valdés‐Maqueda   +2 more
wiley   +1 more source

An Overview on the Synthesis of Lamellarins and Related Compounds with Biological Interest

open access: yesMolecules
Lamellarins are natural products with a [3,4]-fused pyrrolocoumarin skeleton possessing interesting biological properties. More than 70 members have been isolated from diverse marine organisms, such as sponges, ascidians, mollusks, and tunicates.
Vasiliki-Panagiota M. Mitsiou   +3 more
doaj   +1 more source

Phytochemical study on Berberis sibirica Pall.

open access: yesMongolian Journal of Chemistry, 2014
From the aerial parts (700g) of berberis sibirica pall. 6 isoquinoline alkaloids of protoberberine, protopine, benzophenantridine and proaporphine type were isolated. The known alkaloids (-)-tetrahydropseudocoptisine, pseudoprotopine, (+)-chelidonine and
A Solongo   +4 more
doaj   +1 more source

Mellitic Trianhydride Derived Crystalline and Amorphous Polyimide Networks Exhibit Structure Dependent Electrochemical Properties

open access: yesChemistryEurope, Volume 4, Issue 1, January 2026.
The reaction of mellitic trianhydride (MTA) with diaminoanthraquinone (ANQ) under different solvothermal conditions results in electroactive polyimides having mellitic triimide (MTI) and anthraquinone moieties having with crystalline (MTI–ANQ–covalent organic framework (COF)) and amorphous (MTI–ANQ–covalent‐organic network (CON)) networks.
Swamyappan Vijayakumar   +5 more
wiley   +1 more source

1-(4-Chlorophenyl)-2-[(3-phenylisoquinolin-1-yl)sulfanyl]ethanone

open access: yesActa Crystallographica Section E, 2009
The title compound, C23H16ClNOS, exhibits dihedral angles of 11.73 (1) and 66.07 (1)°, respectively, between the mean plane of the isoquinoline system and the attached phenyl ring, and between the isoquinoline system and the chlorophenyl
F. Nawaz Khan   +4 more
doaj   +1 more source

Exploration and Characterization of the Antimalarial Activity of Pyrimidine‐2,4‐Diamines for which Resistance is Mediated by the ABCI3 Transporter

open access: yesChemMedChem, Volume 21, Issue 1, January 2026.
Investigation of the structure‐activity relationship on W482 (1) with a pyrimidine‐2,4‐diamine scaffold culminated in analog 51 with enhanced anti‐plasmodial activity. Forward genetics and phenotypic examination revealed the ABCI3 transporter protein as a putative resistance mechanism.
Mahta Mansouri   +14 more
wiley   +1 more source

Determination of Cytotoxic Activity of Selected Isoquinoline Alkaloids and Plant Extracts Obtained from Various Parts of Mahonia aquifolium Collected in Various Vegetation Seasons

open access: gold, 2021
Tomasz Tuzimski   +7 more
openalex   +1 more source

Natural Products Targeting the EGFR/HER2 Axis in Tumorigenesis: Interpretation of Molecular Mechanisms and Recent Insights Into Synergistic Strategies for Cancer Therapy

open access: yesFood Frontiers, Volume 7, Issue 1, January 2026.
Schematic overview illustrating the anticancer mechanisms of selected natural products (resveratrol, quercetin, berberine) targeting EGFR and HER2 signaling pathways in tumor cells. These compounds inhibit receptor activation and downstream oncogenic cascades, including PI3K/Akt/mTOR, MAPK/ERK, and STAT3 pathways.
Iman Ramli   +8 more
wiley   +1 more source

Natural Dietary Compounds Targeting NF‐κB Signaling in Cancer: Implications for Nutrition‐Based Prevention and Therapy

open access: yesFood 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

Annona muricata (graviola): toxic or therapeutic [PDF]

open access: yes, 2008
This paper examines annona muricata (graviola): toxic or ...
Gray, A.I.   +7 more
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