Results 61 to 70 of about 2,239,305 (281)

Efficient sodium selenate-catalyzed synthesis of 3,4-dihydro-2(1H)-pyrimidinones and –thiones under solvent-free conditions

Bulletin of the Chemical Society of Ethiopia, 2009
Sodium selenate efficiently catalyzes the three-component Biginelli reaction of an aldehyde, a,β-keto ester and urea or thiourea under solvent-free conditions to afford the corresponding 3,4-dihydropyrimidin-2(1H)-ones or –thiones in excellent yields.
Rahim Hekmatshoar, Maryam Heidari, Majid M. Heravi, Bita Baghernejad   +3 more
doaj  

Some cyano-substituted spiro-linked pyrazolines and pyrrolidines with antimicrobial activity [PDF]

Известия Саратовского университета. Новая серия: Серия Химия. Биология. Экология
This work summarizes one-pot synthetic approaches to spiro-fused (di)azoles, which are promising in terms of studying biological activity. Proposed approaches involve condensation reactions of (hetero)cyclic ketones, methylene active moieties, and N ...
Meshcheryakova, Anna A., Borisova, Svetlana Vasilievna, Konstantinova, Ekaterina A., Vidlatskaya, Daria V., Burygin, Gennady L., Sorokin, Vitaly Viktorovich   +5 more
doaj   +1 more source

Universality classes in nonequilibrium lattice systems [PDF]

, 2002
This work is designed to overview our present knowledge about universality classes occurring in nonequilibrium systems defined on regular lattices.
Odor, Geza
core   +3 more sources

By dawn or dusk—how circadian timing rewrites bacterial infection outcomes

FEBS Letters, EarlyView.
The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo, Catherine S. Palmer, Jacqueline M. Kimmey   +2 more
wiley   +1 more source

Crystal structure of 3-benzyl-2-[(E)-2-(furan-2-yl)ethenyl]-2,3-dihydroquinazolin-4(1H)-one and 3-benzyl-2-[(E)-2-(thiophen-2-yl)ethenyl]-2,3-dihydroquinazolin-4(1H)-one from synchrotron X-ray diffraction

Acta Crystallographica Section E: Crystallographic Communications, 2018
The chiral title compounds, C21H18N2O2, (I), and C21H18N2OS, (II) – products of the three-component reaction between benzylamine, isatoic anhydride and furyl- or thienyl-acrolein – are isostructural and form isomorphous racemic crystals.
Flavien A. A. Toze, Vladimir P. Zaytsev, Lala V. Chervyakova, Elisaveta A. Kvyatkovskaya, Pavel V. Dorovatovskii, Victor N. Khrustalev   +5 more
doaj   +1 more source

Salicylic Acid-catalyzed Three-component Synthesis of 1-Amido/thioamidoalkyl-2-naphthols Under Solvent-free Conditions

Orbital: The Electronic Journal of Chemistry, 2019
A simple, efficient, and green procedure for the solvent-free synthesis of 1-amido/thioamidoalkyl-2-naphthols by one-pot stirring of starting reactants at 100 °C has been introduced.
Hassan Darbandi, Hamzeh Kiyani
doaj   +3 more sources

Hematopoietic (stem) cells—The elixir of life?

FEBS Letters, EarlyView.
The aging of HSCs (hematopoietic stem cells) and the blood system leads to the decline of other organs. Rejuvenating aged HSCs improves the function of the blood system, slowing the aging of the heart, kidney, brain, and liver, and the occurrence of age‐related diseases.
Emilie L. Cerezo, Jonah Anderson, Emilie Dinh Vedrenne, Noël Yeh Martín, Jette Lengefeld   +4 more
wiley   +1 more source

Silver-catalyzed synthesis of β-fluorovinylphosphonates by phosphonofluorination of aromatic alkynes

Beilstein Journal of Organic Chemistry, 2020
A silver-catalyzed three-component reaction involving alkynes, Selectfluor®, and diethyl phosphite was employed for the one-pot formation of C(sp2)–F and C(sp2)–P bonds to provide an efficient access to β-fluorovinylphosphonates in a highly regio- and ...
Yajing Zhang, Qingshan Tian, Guozhu Zhang, Dayong Zhang   +3 more
doaj   +1 more source

Structural insights into lacto‐N‐biose I recognition by a family 32 carbohydrate‐binding module from Bifidobacterium bifidum

FEBS Letters, EarlyView.
Bifidobacterium bifidum establishes symbiosis with infants by metabolizing lacto‐N‐biose I (LNB) from human milk oligosaccharides (HMOs). The extracellular multidomain enzyme LnbB drives this process, releasing LNB via its catalytic glycoside hydrolase family 20 (GH20) lacto‐N‐biosidase domain.
Xinzhe Zhang, Naoki Sunagawa, Toma Kashima, Kiyohiko Igarashi, Akimasa Miyanaga, Shinya Fushinobu   +5 more
wiley   +1 more source

A hunter-gatherer-farmer population model: Lie symmetries, exact solutions and their interpretation

, 2014
The Lie symmetry classification of the known three-component reaction-diffusion system modelling the spread of an initially localized population of farmers into a region occupied by hunter-gatherers is derived.
Anna Niemcunowicz-Janica (457677), Anna Szpakowicz (457672), Ewa Waszkiewicz (457674), Grzegorz Opolski (117217), Karol Adam Kaminski (457681), Marek Kiliszek (117207), Maria Franaszczyk (236545), Małgorzata Skawronska (457676), Rafal Ploski (348433), Sławomir Dobrzycki (457679), Witold Pepinski (457673), Włodzimierz Jerzy Musial (457680)   +11 more
core   +4 more sources