Results 141 to 150 of about 3,642 (245)

Photophysics of Biological and Biomimetic Sunscreen Molecules

ChemPhotoChem, Volume 10, Issue 5, May 2026.
Recent photochemical and photophysical research into natural and nature‐inspired UV filter molecules is reviewed, with a focus on the application of these systems in next‐generation sunscreens. The results of time‐resolved UV spectroscopy experiments and theoretical studies are discussed.
Michael Hymas, Vasilios G. Stavros
wiley   +1 more source

Bis(silylene)‐Mediated N═N Bond Scission of Diazo Compounds

Angewandte Chemie, Volume 138, Issue 18, 27 April 2026.
The carborane‐based bis(silylene) enables unprecedented N═N bond scission in diazodiarylmethanes. While xanthene‐ and aniline‐based scaffolds promote end‐on addition with partial N═N activation, the carborane‐based variant uniquely achieves complete N═N bond scission of Ar2C═N═N compounds, resulting in isolable disilicon nitride imino species.
Yun Xiong, Shenglai Yao, Matthias Driess
wiley   +2 more sources

Nucleophilic Substitution of 1,3-Diiodobicyclo[1.1.1]pentane: Synthesis of Bicyclo[1.1.1]pentylpyridinium, Quinolinium, Isoquinolinium, and Pyrazolium Salts. [PDF]

J Org Chem
Monroe HJC, Bello DJ, Duff BJ, Elsegood MRJ, Watanabe K, Pritchard GJ, Kimber MC.   +6 more
europepmc   +1 more source

Evaluation of Different Detection and Identification Methods of Intact Tetrahydro‐Methyltestosterone Sulfate Metabolites in Doping Control

Drug Testing and Analysis, Volume 18, Issue 5, Page 678-689, May 2026.
The micro‐scale synthesis of the six out of eight possible tetrahydro‐methyltestosterone sulfate metabolites was performed, and the synthesized materials were used as analytical standards. The analysis of post‐administration sample extracts from methyltestosterone excretion studies against these standards provides further experimental proof for their ...
Yiannis S. Angelis, Olga Goula, Polyxeni Kiousi, Panagiotis Sakellariou   +3 more
wiley   +1 more source

Catalytic undirected borylation of tertiary C-H bonds in bicyclo[1.1.1]pentanes and bicyclo[2.1.1]hexanes. [PDF]

Nat Chem, 2023
Yu IF, Manske JL, Diéguez-Vázquez A, Misale A, Pashenko AE, Mykhailiuk PK, Ryabukhin SV, Volochnyuk DM, Hartwig JF.   +8 more
europepmc   +1 more source

Bio‐Based Polyurethanes: Mechanical Performance, Structure–Property Relationships, and Future Directions

Journal of Polymer Science, Volume 64, Issue 9, Page 1860-1894, 1 May 2026.
This review examines bio‐based polyurethanes from renewable feedstocks, focusing on structure‐property relationships governing mechanical performance. It analyzes reinforcement strategies, benchmarks against petrochemical counterparts, and explores future directions, including non‐isocyanate routes and circular economy integration for sustainable high ...
Khaled Chawraba, Hussein Medlej, Mohamad Sakr, Akram Hijazi, Abrar Hussain   +4 more
wiley   +1 more source

Regiospecific Skeletal Editing of Azetines toward Halogenated Pyrroles. [PDF]

JACS Au
Ghazali R, Schick E, Lèpre S, Kranich J, Immel S, Didier D.   +5 more
europepmc   +1 more source

A General and Practical Route to Functionalized Bicyclo[1.1.1]Pentane-Heteroaryls Enabled by Photocatalytic Multicomponent Heteroarylation of [1.1.1]Propellane. [PDF]

Angew Chem Int Ed Engl, 2023
Huang W, Keess S, Molander GA.
europepmc   +1 more source

Enzymatic synthesis of bioactive quinolones and (thio)coumarins by fungal type III polyketide synthases

The FEBS Journal, Volume 293, Issue 9, Page 2673-2691, May 2026.
Quinolones are valuable scaffolds for drug discovery but are rare in nature. Here, we show that two fungal enzymes, AthePKS and FerePKS, can generate 2‐quinolones and two additional heteroaromatic scaffolds. Using AthePKS, we designed an artificial enzymatic cascade towards an antimicrobial quinolone from a simple precursor and implemented it in E ...
Nika Sokolova, Angelina Osipyan, Lili Zhang, Matthew R. Groves, Sandy Schmidt, Kristina Haslinger   +5 more
wiley   +1 more source

In Vitro Metabolism and Analytical Characterization of SLU‐PP‐332 and SLU‐PP‐915: Novel Pan‐ERR Agonists With Doping Potential

Rapid Communications in Mass Spectrometry, Volume 40, Issue 8, 30 April 2026.
ABSTRACT Rationale Estrogen‐related receptor (ERR) agonists such as the drug candidates SLU‐PP‐332 and SLU‐PP‐915 are currently being investigated as exercise mimetics, given their ability to trigger human physiological processes similar to those initiated by actual physical activity.
Tristan Möller, Oliver Krug, Mario Thevis   +2 more
wiley   +1 more source