Results 41 to 50 of about 51,319 (173)

Fast and Efficient Synthesis of Racemic Baloxavir Catalyzed by Strong Solid Acid under Microwave Conditions

open access: yesCrystals, 2022
The compound (±)-12aR-12-[(11S)-7,8-difluoro-6,11-dihydrodibenzo[b,e]thiepin-11-yl]-7-hydroxy-3,4,12,12a-tetrahydro-1H-[1,4]oxazino[3,4-c]pyrido[2,1-f][1,2,4]triazine-6,8-dione is the intermediate of baloxavir marboxil.
Yiyun Wang   +6 more
doaj   +1 more source

Recent advances and prospects for high‐efficiency blue hot exciton organic light‐emitting diodes

open access: yesFlexMat, EarlyView.
Blue organic light‐emitting diodes (OLEDs) face great challenges in achieving the balance between color purity, device efficiency, and stability. Hot exciton materials offer a solution by rapidly converting non‐emissive triplet excitons into singlet ones through a high‐lying reverse intersystem crossing process.
Xiaoen Shi   +3 more
wiley   +1 more source

2-(5,6-Diphenyl-1,2,4-triazin-3-yl)aniline

open access: yesActa Crystallographica Section E, 2012
The title compound, C21H16N4, obtained under standard Suzuki cross-coupling conditions, is a model compound in the synthesis and biological activity evaluation of new aza-analogues of sildenafil containing a pyrazolo[4,3-e][1,2,4]triazine system.
Mariusz Mojzych   +2 more
doaj   +1 more source

Analysis of Carbohydrates and Glycoconjugates by Matrix‐Assisted Laser Desorption/Ionization Mass Spectrometry: An Update for 2023–2024

open access: yesMass Spectrometry Reviews, EarlyView.
ABSTRACT The use of MALDI mass spectrometry for the analysis of carbohydrates and glycoconjugates is a well‐established technique and this comprehensive review is the twelfth update of the original article published in 1999 and brings coverage of the literature to the end of 2024.
David J. Harvey
wiley   +1 more source

Heteropolyacides as green and reusable catalysts for the synthesis of [3,4-b][1,3,4] thiadiazines

open access: yesBulletin of the Chemical Society of Ethiopia, 2014
Synthesis of [3,4-b][1,3,4]thiadiazines from the condensation of 4-amino-6-methyl-3-thioxo-1,2,4-triazine-5(2H)-one (AMTTO) or 4-amino-1,4-dihydro-5-methyle-1,2,4-triazole-5-thione (AMTT) with phenacyl bromide in the presence of a catalytic amount of ...
F. Hakimi   +3 more
doaj   +1 more source

Oxaziridines: Versatile Reagents in Modern Organic Synthesis

open access: yesThe Chemical Record, EarlyView.
Being capable of transferring an O atom and N‐group/atom, oxaziridines are considered multitasking agents. These are employed for diverse organic transformations, such as epoxidation of olefins, α‐ and γ‐hydroxylation/amination of carbonyl compounds, oxidation of sulfides, [3+2]cycloaddition with unsaturated systems.
Ajeet Chandra   +2 more
wiley   +1 more source

Heterocyclic Variants of the Purine System. I. Derivatives of Thiazolo[5,4-e]-1,2,4-Triazine

open access: yes, 1987
Derivatives of the thiazolo [5,4-e]-1,2,4-triazine ring system were prepared from appropriate 6-acylamino-1,2,4-triazin-5(2H)-ones by thiation and cyclization with phosphorus pentasulfide.
AE Philippides, NW Jacobsen
core   +1 more source

Therapeutic Potential of [(AP)2M]: A Rationally Designed Polyherbal Formulation for Antidiabetic and Antihyperlipidemic Effects in Alloxan‐Induced Diabetic Mice

open access: yesFood Science &Nutrition, Volume 14, Issue 11, November 2026.
Development and evaluation of a rationally designed polyherbal formulation, highlighting its phytochemical properties, antioxidant activities, enzyme‐inhibitory effects, and antidiabetic and antihyperlipidemic potential in alloxan‐induced diabetic mice.
Md. Shakil Ahmed   +6 more
wiley   +1 more source

The features of nucleophilic substitution of the nitro group in 4-alkyl-6-nitro-1,2,4-triazolo[5,1-c][1,2,4]triazines

open access: yesChimica Techno Acta, 2017
The nucleophilic substitution of the nitro group of 4-alkyl-6-nitro-4,7-dihydro-1,2,4-triazolo[5,1-c][1,2,4]triazine-7-ones on the example of interactionwith morpholine was studied.
E. N. Ulomsky   +6 more
doaj   +1 more source

Synthesis and Pharmacological Evaluation of Phenylethynyl[1,2,4]methyltriazines as Analogues of 3-Methyl-6-(phenylethynyl)pyridine

open access: yes, 2016
Procedures were developed for the synthesis of 3-methyl-5-phenylethynyl[1,2,4]triazine (4), 6-methyl-3-phenylethynyl[1,2,4]triazine (5), and 5-methyl-3-phenylethynyl[1,2,4]triazine (6a) as analogues of 2-methyl-6-(phenylethynyl)pyridine (2).
Brian P. Gilmour (1315098)   +7 more
core   +1 more source

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