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Twenty-seven 7-chloroquinolinotriazole derivatives with different substituents in the triazole moiety were synthesized via copper-catalyzed cycloaddition (CuAAC) click chemistry between 4-azido-7-chloroquinoline and several alkynes. All the synthetic compounds were evaluated for their in vitro activity against Plasmodium falciparum (W2) and cytotoxicity to Hep G2A16 cells. All the products disclosed low cytotoxicity (CC50 > 100 μM) and five of them have shown moderate antimalarial activity (IC50 from 9.6 to 40.9 μM). As chloroquine analogs it was expected that these compounds might inhibit the heme polymerization and SAR studies were performed aiming to explain their antimalarial profile. New structural variations can be designed on the basis of the results obtained.
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http://dx.doi.org/10.1016/j.ejmech.2013.11.022 | DOI Listing |
J Am Chem Soc
September 2025
Shenzhen Key Laboratory of Micro/Nano-Porous Functional Materials (SKLPM), SUSTech-Kyoto University Advanced Energy Materials Joint Innovation Laboratory (SKAEM-JIL), Guangdong-Hongkong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices and Department of Chemistry, S
Postsynthetic modification (PSM) is a powerful strategy for tailoring the structure and functionality of covalent organic frameworks (COFs). In this work, we present a novel enzymatic PSM strategy for functional group engineering within COFs. By taking advantage of enzymatic catalysis, 2-hydroxyethylthio (-S-EtOH) and ethylthio (-S-Et) groups were covalently implanted within the COF pore channels with high grafting efficiency under ambient aqueous conditions, highlighting the mild, efficient, and ecofriendly nature of this approach.
View Article and Find Full Text PDFJ Am Chem Soc
September 2025
Center of Drug Discovery, State Key Laboratory of Natural Medicine, China Pharmaceutical University, Nanjing 211198, China.
The advancement of bioorthogonal cleavage platforms has emerged as a critical frontier in chemical biology, offering precise molecular liberation through physiologically compatible activation mechanisms. Despite its significant potential, ensuring efficacy typically requires rapid reaction kinetics, high-efficiency payload release, and stable reactants; however, relevant reports remain sparse. Herein, we developed a strain-promoted alkyne-nitrone cycloaddition (SPANC)-based click-release chemistry through installation of a carbamate-linked release moiety at the propargyl position of cyclooctyne, triggering a spontaneous elimination following click cycloaddition to achieve efficient payload liberation.
View Article and Find Full Text PDFJ Mater Chem B
September 2025
State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Oral Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan, China.
Infected wound treatment remains a critical challenge in clinical medicine. Although existing treatments, like local debridement, antimicrobial agents, and growth factor therapies, have demonstrated certain therapeutic effects, they primarily target only specific stages of wound healing. Moreover, the escalating issue of antibiotic resistance limits their efficacy.
View Article and Find Full Text PDFBeilstein J Nanotechnol
August 2025
Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal, QC H3A 0B8, Canada.
The preparation of multimodal nanoparticles by capping magnetic iron oxide nanoparticles (IONPs) with functional organic molecules is a major area of research for biomedical applications. Conjugation reactions, such as carbodiimide coupling and the highly selective class of reactions known as "click chemistry", have been instrumental in tailoring the ligand layers of IONPs to produce functional biomedical nanomaterials. However, few studies report the controls performed to determine if the loading of molecules onto IONPs is due to the proposed coupling reaction(s) employed, or some other unknown interaction with the IONP surface.
View Article and Find Full Text PDFBioconjug Chem
September 2025
Division of Organic Chemistry, National Institute of Health Sciences, 3-25-26, Tonomachi, Kawasaki 210-9501, Kanagawa, Japan.
Proteolysis-targeting chimeras (PROTACs) have emerged as a powerful modality for selectively degrading intracellular proteins via the ubiquitin-proteasome system. However, their development is often hindered by the limited availability of high-affinity small-molecule ligands, particularly for challenging targets, such as transcription factors. Aptamers─synthetic oligonucleotides with high affinity and specificity─offer a promising alternative as target-binding modules in the PROTAC design.
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