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Synthesis of medium-sized rings is known to be challenging due to high transannular strain especially for 9- and 10-membered rings. Herein we report design and synthesis of unprecedented 9- and 10-membered purine 8,5'-cyclonucleosides as the first cyclonucleoside PRMT5 inhibitors. The cocrystal structure of PRMT5:MEP50 in complex with the synthesized 9-membered cyclonucleoside 1 revealed its binding mode in the SAM binding pocket of PRMT5.
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http://dx.doi.org/10.1016/j.bmc.2022.116820 | DOI Listing |
Environ Monit Assess
September 2025
Department of Civil Engineering, Faculty of Engineering, Karpagam Academy of Higher Education, Pollachi Main Road, Eachanari Post, Coimbatore, Tamil Nadu, 641021, India.
Synthetic dyes, such as Congo red (CR), pose serious threats to human health and aquatic ecosystems because of their carcinogenicity and resistance to degradation, necessitating the development of efficient and eco-friendly remediation strategies. In this study, silver nanoparticles (AgNPs) were synthesized via a green method using Ocimum sanctum (holy basil) leaf extract and applied for CR dye removal from aqueous solutions. The adsorption process was optimized using response surface methodology (RSM) based on Box-Behnken design (BBD), evaluating the influence of key parameters including pH, AgNP dosage, initial dye concentration, contact time, and temperature.
View Article and Find Full Text PDFNature
September 2025
Research Center for Industries of the Future, Westlake University, Hangzhou, China.
The electrolyte-electrode interface serves as the foundation for a myriad of chemical and physical processes. In battery chemistry, the formation of a well-known solid-electrolyte interphase (SEI) plays a pivotal role in ensuring the reversible operations of rechargeable lithium-ion batteries (LIBs). However, characterizing the precise chemical composition of the low crystallinity and highly sensitive SEI presents a formidable challenge.
View Article and Find Full Text PDFLuminescence
September 2025
Department of Chemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh, India.
A triphenyl-imidazole end-capped donor-acceptor type potential molecular probe 3 has been designed and synthesized. Probe 3 upon interaction with different classes of metal ions/anions and NPPs displayed high selectivity with CN anion (LOD = 20.42 nM) through fluorescence "turn-Off" response and a naked-eye sensitive visible color change.
View Article and Find Full Text PDFAcc Chem Res
September 2025
Departamento de Química, Universidad Autónoma Metropolitana-Iztapalapa, Ave. Ferrocarril San Rafael Atlixco 186, Col. Leyes de Reforma 1A sección, Alcaldía Iztapalapa, 09310 Mexico City, Mexico.
ConspectusWhat does the word antioxidant mean? Antioxidants are supposed to be nontoxic, versatile molecules capable of counteracting the damaging effects of oxidative stress (OS). Thus, when evaluating a candidate molecule as an antioxidant, several aspects should be considered. Antioxidants are more than free radical scavengers.
View Article and Find Full Text PDFChem Pharm Bull (Tokyo)
January 2025
Laboratory of Pharmaceutical Analytical Chemistry, College of Pharmaceutical Sciences, Matsuyama University, 4-2 Bunkyo-cho, Matsuyama, Ehime 790-8578, Japan.
Several approaches for synthesizing [1-C]2-oxoglutaric acid were attempted, and the synthesis was successfully achieved in 4 steps from trimethylsilyl C-cyanide. The C-breath tests on rats were conducted by orally administering the newly synthesized [1-C]2-oxoglutaric acid, the previously prepared [1'-C]citric acid, and [1-C]acetic acid as a control drug, and the results were compared. The results indicate that [1-C]2-oxoglutaric acid and [1'-C]citric acid may serve as potential substrates for assessing the TCA cycle flux.
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