Results 121 to 130 of about 19,339 (247)

Estudo da síntese espectros I.V. e atividade farmacobiológica de 1-acil-4-aril-tiosemicarbazidas e triazóis 3,4,5-trissubstituídos [PDF]

, 1987
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Curso de Pós-Graduação em Físico ...
Peres, Marize Terezinha Lopes Pereira
core  

Die Jekyll‐und‐Hyde‐Natur von Tetrazolen in der Polymerwissenschaft: Von der intrinsischen elektronischen Dualität zur programmierbaren makromolekularen Funktion

Angewandte Chemie, Volume 138, Issue 36, 1 September 2026.
Ein Heterocyclus – drei elektronische Identitäten. Dieses Minireview zeigt, wie das Substitutionsmuster von Tetrazolen deren Funktion in Polymeren bestimmt und eröffnet substitutionsdefinierte Designprinzipien für funktionelle Polymermaterialien. ZUSAMMENFASSUNG Die Natur vereint Stabilität und Responsivität in einzelnen molekularen Gerüsten und ...
Meryem S. Akdemir, Hatice Mutlu
wiley   +1 more source

High-pressure activation for the solvent- and catalyst-free syntheses of heterocycles, pharmaceuticals and esters

Beilstein Journal of Organic Chemistry
High hydrostatic pressure (HHP) was found to be an efficient activation method in several catalyst- and solvent-free reactions and has found application for the syntheses of heterocycles and the preparation of active pharmaceutical ingredients (APIs) via
Kelsey Plasse, Valerie Wright, Guoshu Xie, R. Bernadett Vlocskó, Alexander Lazarev, Béla Török   +5 more
doaj   +1 more source

The Jekyll and Hyde Nature of Tetrazoles in Polymer Science: From Intrinsic Electronic Duality to Programmable Macromolecular Function

Angewandte Chemie International Edition, Volume 65, Issue 36, 1 September 2026.
Tetrazoles are reframed as substitution‐programmable heterocycles rather than static functional groups in polymer chemistry. By linking electronic identity to synthetic strategy and polymer architecture, this mini‐review establishes a design framework for translating tetrazole duality into predictable macromolecular function.
Meryem S. Akdemir, Hatice Mutlu
wiley   +1 more source

Overview of Photochemical Reactions for the Synthesis of Aza and Oxa‐Spirocyclic Compounds Under Visible Light Irradiation

Chemistry &Biodiversity, Volume 23, Issue 9, September 2026.
This review presents the visible‐light‐mediated photochemical reaction for the synthesis of aza, oxa, and aza–oxa spirocyclic compounds via photoinduced electron transfer (PET), hydrogen atom transfer (HAT), single‐electron transfer (SET), or energy transfer (EnT) pathways.
Annu Bhardwaj, Shivangi Jaiswal, Khushboo Bhardwaj, Swapnil Sharma, Jaya Dwivedi   +4 more
wiley   +1 more source

Co‐Acid Free Nitration of N,N‐Dimethylanilines Using Traditional and Nontraditional Activation Methods

Chemistry–Methods, Volume 6, Issue 9, September 2026.
Selective mono‐ and dinitration of dimethylanilines by co‐acid‐free dilute aqueous nitric acid using nontraditional activation methods, such as microwave, ultrasound, and high hydrostatic pressure. The nitration of aromatic compounds is a highly important transformation, contributing to the synthesis of dyes, agrochemicals, explosives, pharmaceuticals,
Kelsey M. Plasse, Lyah K. Esplana, Béla Török   +2 more
wiley   +1 more source

Identification of New Anti‐Trypanosoma brucei Leads: An Integrated CRK12‐Guided Virtual Screen With Experimental Validation

Chemical Biology &Drug Design, Volume 108, Issue 3, September 2026.
An integrated computational‐experimental workflow enabled CRK12‐guided hit discovery against Trypanosoma brucei under limited structural and ligand data. The workflow of virtual screening and anti‐T. brucei bioassays identified 4 hit compounds, including three low‐micromolar leads (IC50 = 1.47, 0.81, and 1.33 μM). ABSTRACT Human African trypanosomiasis
Qin Li, Chenggong Fu, Jiayi Luo, Qianqian Zhang, Lingling Wang, Xiaomeng Liu, Jiayue Qiu, Xiaoqing Gong, Henry H. Y. Tong, Xiaojun Yao, Dehua Lai, Huanxiang Liu   +11 more
wiley   +1 more source

Green Synthesis of Pyrazoles: Recent Developments in Aqueous Methods

SynOpen, 2023
Sushma Singh, Sidhant Yadav, Minakshi Minakshi, Rashmi Pundeer   +3 more
doaj   +1 more source

Long‐Term Impact of Cropping System and Nitrogen Input Quality on Nitrogen Release and Organic Matter Chemistry

European Journal of Soil Science, Volume 77, Issue 5, September–October 2026.
ABSTRACT Long‐term integrated soil management strategies are essential for enhancing soil organic matter (SOM) quality and promoting the availability of mineralizable nitrogen (N). This study employed a tripartite analytical framework to investigate how crop rotations and organic N amendments influence soil N availability and SOM chemistry.
Sevendeep Kaur Chahal, BaoLuo Ma, John Lauzon, Joshua Nasielski, Adam W. Gillespie   +4 more
wiley   +1 more source

Plasma Pharmacokinetic Profile of Fipronil 1% Pour‐On in Cattle: Photodegradation and the Sustained Systemic Persistence of Fipronil Sulfone

Journal of Veterinary Pharmacology and Therapeutics, Volume 49, Issue 5, Page 515-524, September 2026.
ABSTRACT This study characterized the long‐term pharmacokinetic profile of a 1% fipronil pour‐on formulation in Nellore bulls under field conditions. Seventeen animals received a single topical dose (1 mg/kg), and plasma concentrations of fipronil and its metabolites (sulfone and desulfinyl) were monitored for 175 days using LC–MS/MS.
Stefani Maria Ferreira, Leonila Ester Reinert Raspantini, Giselle Kindlein, Fabiano Barreto, Caroline Andrade Tomaszewski, Tamara dos Santos Castilhos, Daniel Rodrigo Hillesheim, Silvana Lima Górniak, André Tadeu Gotardo   +8 more
wiley   +1 more source