Results 21 to 30 of about 3,385 (223)

DDQ/PbO2: a Novel Oxidation System for Hindered Electron Rich Benzhydrols

Molecules, 2000
A convenient mild protocol for oxidation of highly hindered electron rich benzhydrols using DDQ / PbO2 has been developed.
G. P. Kalena, S. M. Jadhav, A. Banerji
doaj   +1 more source

Photostability Testing of a Third-Generation Retinoid—Tazarotene in the Presence of UV Absorbers

Pharmaceutics, 2020
Exposure of a drug to UV irradiation could affect its physicochemical properties. Hence, photostability testing is essential for topically administered drugs.
Agata Kryczyk-Poprawa, István Zupkó, Péter Bérdi, Paweł Żmudzki, Justyna Popiół, Bożena Muszyńska, Włodzimierz Opoka   +6 more
doaj   +1 more source

Benzophenones from Anemarrhena asphodeloides Bge. Exhibit Anticancer Activity in HepG2 Cells via the NF-κB Signaling Pathway

Molecules, 2019
A chemical investigation of the fibrous roots of Anemarrhena asphodeloides Bge. led to the isolation of four benzophenones, including one new compound (1) and three known ones (2−4).
De-Ling Wu, Zhen-Dong Liao, Fang-Fang Chen, Wei Zhang, Ya-Shuo Ren, Can-Can Wang, Xiao-Xiao Chen, Dai-Yin Peng, Ling-Yi Kong   +8 more
doaj   +1 more source

Transition-metal-free trifluoromethylthiolation–acylation of arynes by insertion into the C–S bonds

Green Synthesis and Catalysis, 2021
An efficient procedure to access to ortho-SCF3 substituted benzophenones from arynes and trifluoromethylthioesters has been developed under transition-metal free conditions. This difunctionalization process involves the first insertion of arynes into the
Chengyao Kimmy Cao, Evgeny Tretyakov, Chao Chen   +2 more
doaj   +1 more source

Chlorination and chloramination of benzophenone-3 and benzophenone-4 UV filters

Ecotoxicology and Environmental Safety, 2018
The objective of this research was to explore the fundamental reactions between chlorine/chloramine and 2-hydroxyl-4-methoxyl benzophenone (BP3)/2-hydroxyl-4-methoxyl benzophenone-sulfonic acid (BP4), which were the most common reactions in benzophenone-type UV filters during drinking water treatment processes.
Peizeng, Yang, Deyang, Kong, Yuefei, Ji, Junhe, Lu, Xiaoming, Yin, Quansuo, Zhou   +5 more
openaire   +2 more sources

Multiclass Determination of Endocrine-Disrupting Chemicals in Meconium: First Evidence of Perfluoroalkyl Substances in This Biological Compartment

Toxics
Major concerns have been raised about human exposure to endocrine-disrupting chemicals (EDCs) during pregnancy. Effective methodologies for the assessment of this exposure are needed to support the implementation of preventive measures and the prediction
Aritz Domínguez-Liste, Teresa de Haro-Romero, Raquel Quesada-Jiménez, Ainhoa Pérez-Cantero, Francisco Manuel Peinado, Óscar Ballesteros, Fernando Vela-Soria   +6 more
doaj   +1 more source

Implantable Ionic Memristors Based on Natural Polymer Heterojunctions

Advanced Functional Materials, EarlyView.
We report an implantable natural polymer‐based ionic memristor composed of hyaluronic acid, chitosan, and PDMS. The device achieved 98.94% accuracy in MNIST classification while reducing training time by 36.8% compared with a conventional artificial neural network (ANN).
Dong‐yup Lee, Byung Ik Park, Gihyeon Yim, Hyunjae Yoo, Sangjun Ma, Jundong Park, Jeong‐Yun Sun   +6 more
wiley   +1 more source

Dalbergia ecastaphyllum (L.) Taub. and Symphonia globulifera L.f.: The Botanical Sources of Isoflavonoids and Benzophenones in Brazilian Red Propolis

Molecules, 2020
The Brazilian red propolis (BRP) constitutes an important commercial asset for northeast Brazilian beekeepers. The role of Dalbergia ecastaphyllum (L.) Taub. (Fabaceae) as the main botanical source of this propolis has been previously confirmed. However,
Gari Vidal Ccana-Ccapatinta, Jennyfer Andrea Aldana Mejía, Matheus Hikaru Tanimoto, Milton Groppo, Jean Carlos Andrade Sarmento de Carvalho, Jairo Kenupp Bastos   +5 more
doaj   +1 more source

One‐Step Curcumin‐Mediated Multiphoton Lithography for Bioactive 3D Scaffolds

Advanced Functional Materials, EarlyView.
Curcumin‐mediated multiphoton lithography enables one‐step fabrication of highly architected complex gelatin methacryloyl scaffolds by exploiting curcumin as a multifunctional bioactive photoinitiator. The resulting 3D structures support mesenchymal stem cell adhesion, proliferation, and migration, while exhibiting dual antibacterial activity through ...
Myrto Charitaki, Michalis Stavrou, Chrysanthi Pinelopi Apostolidou, Elmina Kabouraki, David Gray, Anna Mitraki, Anthi Ranella, Maria Farsari   +7 more
wiley   +1 more source

Toxicity of UV Filter Benzophenone-3 in Brine Shrimp Nauplii (Artemia salina) and Zebrafish (Danio rerio) Embryos

Journal of Xenobiotics
The benzophenone (BP) family, including oxybenzone (BP-3), a prevalent sunscreen ingredient and environmental contaminant, has raised concerns since the year 2005.
Melissa I. Ortiz-Román, Ileska M. Casiano-Muñiz, Felix R. Román-Velázquez   +2 more
doaj   +1 more source