Results 21 to 30 of about 9,794 (211)

Flavouring Group Evaluation 21 Revision 6 (FGE.21Rev6): thiazoles, thiophenes, thiazoline and thienyl derivatives from chemical groups 29 and 30

open access: yesEFSA Journal, 2023
The Panel on Food additives and Flavourings (FAF) was requested to evaluate the flavouring substances 2,4‐dimethyl‐3‐thiazoline [FL‐no: 15.060] and 2‐isobutyl‐3‐thiazoline [FL‐no: 15.119] in Flavouring Group Evaluation 21 revision 6 (FGE.21Rev6).
EFSA Panel on Food Additives and Flavourings (FAF)   +25 more
doaj   +1 more source

5-(4-Methoxyphenyl)-1-[4-(4-methoxyphenyl)thiazol-2-yl]-3-[4-(prop-2-ynyloxy)phenyl]-4,5-dihydro-1H-pyrazole

open access: yesIUCrData, 2022
The title compound, C29H25N3O3S, crystallizes in the monoclinic space group P21/n. The molecule contains a central four-ring system in which all of the rings are almost coplanar.
Sreeramapura D. Archana   +5 more
doaj   +1 more source

Synthesis, molecular modeling and bioactivity of new bis-thiazole, thiazole-pyrazole, and thiazole-pyridine analogues

open access: yesJournal of Saudi Chemical Society, 2023
Several new thiazole derivatives linked pyrazole and/or pyridine rings were synthesized based on the versatile precursor 2-(5-acetyl-4-methyl-3-phenylthiazol-2(3H)-ylidene)acetonitrile (1). The synthesized derivatives were optimized using DFT approach in order to inspect the configurations and energies of the HOMO-LUMO orbitals.
Abrar Bayazeed   +7 more
openaire   +2 more sources

The Structure of Biologically Active Functionalized Azoles: NMR Spectroscopy and Quantum Chemistry

open access: yesMagnetochemistry, 2022
This review summarizes the data on the stereochemical structure of functionalized azoles (pyrazoles, imidazoles, triazoles, thiazoles, and benzazoles) and related compounds obtained by multipulse and multinuclear 1H, 13C, 15N NMR spectroscopy and quantum
Lyudmila I. Larina
doaj   +1 more source

Development of Novel Pyridine-Thiazole Hybrid Molecules as Potential Anticancer Agents

open access: yesMolecules, 2022
Novel pyridine-thiazole hybrid molecules were synthesized and subjected to physico-chemical characterization and screening of their cytotoxic action towards a panel of cell lines derived from different types of tumors (carcinomas of colon, breast, and ...
Iryna Ivasechko   +15 more
doaj   +1 more source

Biosynthesis of the Thiamin-Thiazole in Eukaryotes: Identification of a Thiazole Tautomer Intermediate [PDF]

open access: yesJournal of the American Chemical Society, 2008
Thiamin thiazole biosynthesis in eukaryotes is still not completely understood. In this report, a late intermediate, tightly bound to the active site of the Saccharomyces cerevisiae thiazole synthase, was identified as an adenylated thiazole tautomer. The reactivity of this unusual compound was evaluated.
Abhishek, Chatterjee   +4 more
openaire   +2 more sources

A facile, solvent and catalyst free, microwave assisted one pot synthesis of hydrazinyl thiazole derivatives

open access: yesJournal of Saudi Chemical Society, 2015
A rapid synthesis of hydrazinyl thiazoles under solvent and catalyst free condition is reported within 30 s. A series of aryl ketones/4-benzoyl pyridine thiosemicarbazone, thiosemicarbazide and α-haloketones were used.
D. Chinnaraja, R. Rajalakshmi
doaj   +1 more source

A Facile Synthesis of 2,4-Disubstituted Thiazoles Using MnO2

open access: yesMolecules, 2009
Structurally diverse thiazoles with electron-donating and electron-withdrawing groups were conveniently synthesized through manganese dioxide (MnO2) oxidation of the corresponding thiazolines.
Bin Fu   +4 more
doaj   +1 more source

Synthesis and Biological Evaluation of Bisthiazoles and Polythiazoles

open access: yesMolecules, 2018
Small heterocyclic compounds containing nitrogen and sulfur atoms, such as thiazole derivatives, represent a significant class of organic azoles that exhibit promising bioactivities and have a great potential in medicinal and agricultural fields.
Mohammed A. Al-Omair   +2 more
doaj   +1 more source

Thiazole formation through a modified Gewald reaction

open access: yesBeilstein Journal of Organic Chemistry, 2015
The synthesis of thiazoles and thiophenes starting from nitriles, via a modified Gewald reaction has been studied for a number of different substrates. 1,4-Dithiane-2,5-diol was used as the aldehyde precursor to give either 2-substituted thiazoles or 2 ...
Carl J. Mallia   +3 more
doaj   +1 more source

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