Results 11 to 20 of about 24,125 (306)

Photochemical approach to functionalized benzobicyclo[3.2.1]octene structures via fused oxazoline derivatives from 4- and 5-(o-vinylstyryl)oxazoles [PDF]

open access: yesBeilstein Journal of Organic Chemistry, 2014
Novel cis/trans-4- and cis/trans-5-(2-vinylstyryl)oxazoles have been synthesized by Wittig reactions from the diphosphonium salt of α,α’-o-xylene dibromide, formaldehyde and 4- and 5-oxazolecarbaldehydes, respectively. In contrast, trans-5-(2-vinylstyryl)
Ivana Šagud   +3 more
doaj   +4 more sources

Synthesis of Highly Substituted Oxazoles through Iodine(III)-Mediated Reactions of Ketones with Nitriles [PDF]

open access: goldMolecules, 2012
In the presence of trifluoromethanesulfonic acid (TfOH) or bis(trifluoromethane-sulfonyl)imide (Tf2NH), iodosobenzene (PhI=O) efficiently promoted the reactions of dicarbonyl compounds as well as monocarbonyl compounds with nitriles to give 2,4 ...
Yuji Hanzawa, Akio Saito, Nao Hyodo
doaj   +2 more sources

Oxazole and thiazole analogs of sulindac for cancer prevention [PDF]

open access: yesFuture Medicinal Chemistry, 2018
Aim: Experimental and epidemiological studies and clinical trials suggest that nonsteroidal anti-inflammatory drugs possess antitumor potential. Sulindac, a widely used nonsteroidal anti-inflammatory drug, can prevent adenomatous colorectal polyps and ...
Bini Mathew   +4 more
semanticscholar   +4 more sources

Inter- and intramolecular Diels-Alder/retro-Diels-Alder reactions of 4-silylated oxazoles [PDF]

open access: diamond, 2002
4-Silylated oxazoles have been shown to undergo inter- and intramolecular Diels-Alder/retro-Diels-Alder reactions with electron-poor alkynes to generate polysubstituted furans.
Pascal Ducept, Stephen P. Marsden
openalex   +4 more sources

Core spectroscopy of oxazole

open access: yesThe Journal of Chemical Physics, 2022
We have measured, analyzed, and simulated the ground state valence photoelectron spectrum, x-ray absorption (XA) spectrum, x-ray photoelectron (XP) spectrum as well as normal and resonant Auger–Meitner electron (AE) spectrum of oxazole at the carbon, oxygen, and nitrogen K-edge in order to understand its electronic structure.
Anna Kristina Schnack-Petersen   +8 more
openaire   +3 more sources

Review on Chemistry of Oxazole derivatives: Current to Future Therapeutic Prospective

open access: yesEgyptian Journal of Basic and Applied Sciences, 2023
Oxazole and its derivatives play a very essential role in the area of medicinal chemistry. Oxazole nucleus is heterocyclic five-membered ring that seemed to be investigated in the advancement of novel compounds which shows favorable biological activities.
S. Joshi   +3 more
semanticscholar   +1 more source

Suzuki Coupling of Oxazoles [PDF]

open access: yesOrganic Letters, 2006
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Flegeau, Emmanuel Ferrer   +2 more
openaire   +5 more sources

Crystal structure and Hirshfeld surface analysis of (3S,3aR,6aS)-3-(1,3-diphenyl-1H-pyrazol-4-yl)-5-(4-methoxyphenyl)-2-phenyl-3,3a,4,5,6,6a-hexahydro-2H-pyrrolo[3,4-d][1,2]oxazole-4,6-dione

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2021
In the title compound, C33H26N4O4, the two fused five-membered rings and their N-bound aromatic substituents form a pincer-like motif. The relative conformations about the three chiral carbon atoms are established.
Shaaban K. Mohamed   +5 more
doaj   +1 more source

A study of cell membranes in nasal epithelial cells from patients with chronic rhinosinusitis with nasal polyps by means of a fluorescent probe [PDF]

open access: yes, 2019
Aim. To assess the state of membranes in nasal epithelial cells obtained from the patients with chronic rhinosinusitis with nasal polyps (CRSwNP) with the help of the fluorescent probe 2-(2ʹ-ОН-phenyl)-5-phenyl-1,3-oxazole. Methods. The state of membrane
Korniyenko, Y. M.   +6 more
core   +2 more sources

Synthesis of Pyridoxine-Derived Dimethylpyridinols Fused with Aminooxazole, Aminoimidazole, and Aminopyrrole

open access: yesMolecules, 2022
Described in this paper are studies on the preparation of three classes of dimethylpyridinols derived from pyridoxine fused with aminooxazole, aminoimidazole, and aminopyrrole.
Bhuwan Prasad Awasthi   +2 more
doaj   +1 more source

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