Results 1 to 10 of about 5,639 (212)

Fluorescent Probes from Aromatic Polycyclic Nitrile Oxides: Isoxazoles versus Dihydro‐1λ3,3,2λ4‐Oxazaborinines

ChemistryOpen, 2019
Anthracenenitrile oxide undergoes 1,3‐dipolar cycloaddition reaction with propargyl bromide affording the expected isoxazole as single regioisomer, suitably synthetically elaborated and functionalized with a protected triple bond.
Dr. Mattia Moiola, Dr. Antonio Bova, Dr. Stefano Crespi, Dr. Misal G. Memeo, Prof. Mariella Mella, Prof. Herman S. Overkleeft, Dr. Bogdan I. Florea, Prof. Paolo Quadrelli   +7 more
doaj   +1 more source

Synthesis and Antimicrobial Evaluation of Some Heterocyclic Chalcone Derivatives

Molecules, 2011
Some new heterocyclic compounds containing isoxazole, pyrazole and oxadiazole ring systems were prepared from various chalcones. The synthesized compounds have been characterized by elemental analysis and spectral methods.
Essam Mohamed Sharshira, Nagwa Mohamed Mahrous Hamada   +1 more
doaj   +1 more source

Cycloaddition of Benzyne with Alkoxy-Substituted Pyrroline-N-oxides­: Unexpected Rearrangement to an N-Phenylpyrrole

SynOpen, 2018
Reaction of enantiopure 3,4-dialkoxy-pyrroline N-oxides with benzyne affords the expected tetrahydrobenzo[d]pyrrolo[1,2-b]isoxazoles along with an unexpected 2,3-disubstitued-N-phenyl-pyrrole derived from an unprecedented rearrangement of the adduct of ...
Franca M. Cordero, Bhushan B. Khairnar, Anna Ranzenigo, Alberto Brandi   +3 more
doaj   +1 more source

Contrasts among origins of corn hybrids in relation to their susceptibility to nicosulfuron and isoxaflutole herbicides
Contrastes entre procedências de híbridos de milho em relação à suscetibilidade aos herbicidas nicosulfuron e isoxaflutole

Semina: Ciências Agrárias, 2010
Herbicide selectivity is the basis for successfull weed chemical control in agricultural production, as it is considered as a measurement of the difeerential response of different plant species to a certain herbicide.
Rosecler Salete Canossa, João Guilherme Zanetti de Arantes, Diego Gonçalves Alonso, Denis Fernando Biffe, Jamil Constantin, Rubem Silvério de Oliveira Junior, Sidnei Douglas Cavalieri   +6 more
doaj   +1 more source

Effects of Isoxazolyl Steroids on Key Genes of Sonic Hedgehog Cascade Expression in Tumor Cells

Molecules
Activation of the Hedgehog (Hh) signaling pathway is often associated with the progression of various types of cancer. The purpose of study was to search for inhibitors of the Hh signaling pathway among eight compounds belonging to the group of ...
Anna Aleksandrova, Arif Mekhtiev, Olga Timoshenko, Elena Kugaevskaya, Tatiana Gureeva, Alisa Gisina, Maria Zavialova, Kirill Scherbakov, Anton Rudovich, Vladimir Zhabinskii, Vladimir Khripach   +10 more
doaj   +1 more source

Synthesis of the omega-brominated alpha-trifluoroacetylcycloalkanones and their isoxazole derivatives

Journal of the Brazilian Chemical Society, 2006
The reactions of a serie of the 2-trifluoroacetyl-1-methoxy-1-cycloalkenes (1a-1e) and 2-trifluoroacetylcycloalkanones (2a-2e) with molecular bromine to obtain omega-bromo-alpha-trifluoroacetylcycloalkanones (3a-3e, 4a) is reported. Was determined that 2-
Flores Alex F. C., Peres Rodrigo L., Piovesan Luciana A., Flores Darlene C., Bonacorso Helio G., Martins Marcos A. P.   +5 more
doaj  

Direct ring fluorination of 3-substituted 5-(1,3-dioxane) acetal isoxazoles: application to the formal synthesis of a bioactive fluorinated isoxazole

Comptes Rendus. Chimie
The access to a novel variety of 4-fluorinated isoxazoles bearing an aryl or alkyl group at the C-3 position and an acetal fragment at the C-5 position has been achieved through a direct fluorination using N-fluorobenzenesulfonimide (NFSI) with yields up
Bacheley, Lucas, Guillamot, Gérard, Phansavath, Phannarath, Ratovelomanana-Vidal, Virginie   +3 more
doaj   +1 more source

Molecular Structure of Heterocycles: 6. Solvent Effects on the 17O Nmr Chemical Shifts of 5-Trichloromethylisoxazoles

Journal of the Brazilian Chemical Society, 2001
A multilinear-regression analysis using the Kamlet-Abboud-Taft (KAT) solvatochromic parameters in order to elucidate and quantify the solvent effects on the 17O chemical shifts of three 5-trichloromethylisoxazoles [(1a) non-, (1b) 3-methyl- and (1c) 4 ...
Martins Marcos A. P., Freitag Rogério A., Zimmermanna Nilo E. K., Sinhorin Adilson P., Cúnico Wilson, Bastos Giovani P., Zanatta Nilo, Bonacorso Helio G.   +7 more
doaj  

Synthesis of new 3,5-substiuted isoxazole derivatives possessing potential anti-aggregative activity

Тонкие химические технологии, 2010
Two new compounds belonging to 3,5-substituted isoxazoles class were synthesized for the action mechanism investigation and the pharmacophore fragment determination of potential anti-aggregative compounds of this class.
O. V. Demina, A. V. Laptev, A. U. Lukin, N. E. Belikov, K. V. Zvezdin, M. A. Fomin, A. A. Khodonov, S. D. Varfolomeev, V. I. Shvets   +8 more
doaj  

Skeletal Editing of Isoxazoles to Pyrimidines via O‑to-CN Transmutation. [PDF]

JACS Au
Chen L, Yun C, Zhang Y, Sun G, Lu H, Wei H.   +5 more
europepmc   +1 more source