Results 41 to 50 of about 491,465 (198)

Zinc Acetate Catalyzed Stereoselective 1,2-trans-Glycosylation Using Glycosyl Chlorides

SynOpen, 2022
We report a strategy for the stereoselective synthesis of 1,2-trans-glycosides in the absence of neighboring group participation. The present protocol for the selective glycosylation mainly relies on catalyst control rather than protecting group ...
Mohammad Saif Ali, P. I. Ramesh, Subhash Ghosh, Madhu Babu Tatina   +3 more
doaj   +1 more source

New monomers for (bi)pyridine-containing polymers

Chimica Techno Acta, 2020
Convenient methods for the synthesis of three monomers based on functionalized (bi)pyridines with using “1,2,4-triaizine” methodology have been developed.
A. P. Krinochkin, M. I. Savchuk, E. S. Starnovskaya, Y. K. Shtaitz, D. S. Kopchuk, I. L. Nikonov, I. S. Kovalev, G. V. Zyryanov, V. L. Rusinov, O. N. Chupakhin   +9 more
doaj   +1 more source

Isoxazolyl-Derived 1,4-Dihydroazolo[5,1-c][1,2,4]Triazines: Synthesis and Photochemical Properties

Molecules, 2023
New fluorescent dyes containing an assembled 1,4-dihydroazolo[5,1-c][1,2,4]triazine (DAT) core and an isoxazole ring were synthesized through a reaction between diazopyrazole or diazoimidazoles and isoxazolyl-derived enamines in mild conditions.
Elena V. Sadchikova, Nikita E. Safronov, Nikolai A. Beliaev, Valentine G. Nenajdenko, Nataliya P. Belskaya   +4 more
doaj   +1 more source

Two mutually complementary synthetic approaches towards 3-substituted 3,4-disubstituted and 1-(2-pyridyl)-substituted isoquinolines

Chimica Techno Acta, 2018
Two mutually complementary synthetic approaches towards 3- and 3,4-disubstituted 1-(2-pyridyl) isoquinolines were studied. The aryne-based method was successfully used for the obtaining of the corresponding the 3-cyano-1-(2-pyridyl)isoquinolines in one ...
I. L. Nikonov, D. S. Kopchuk, A. F. Khasanov, A. P. Krinochkin, E. S. Starnovskaya, Ya. K. Shtaiz, M. I. Savchuk, O. S. Tanya, G. V. Zyryanov, V. L. Rusinov, O. N. Chupakhin   +10 more
doaj   +1 more source

Styrylpyridinium Derivatives for Fluorescent Cell Imaging

Pharmaceuticals, 2023
A set of styrylpyridinium (SP) compounds was synthesised in order to study their spectroscopic and cell labelling properties. The compounds comprised different electron donating parts (julolidine, p-dimethylaminophenyl, p-methoxyphenyl, 3,4,5 ...
Reinis Putralis, Ksenija Korotkaja, Martins Kaukulis, Zhanna Rudevica, Juris Jansons, Olga Nilova, Martins Rucins, Laura Krasnova, Ilona Domracheva, Mara Plotniece, Karlis Pajuste, Arkadij Sobolev, Felikss Rumnieks, Laura Bekere, Anna Zajakina, Aiva Plotniece, Gunars Duburs   +16 more
doaj   +1 more source

Decreases in Circulating Concentrations of Long-Chain Acylcarnitines and Free Fatty Acids During the Glucose Tolerance Test Represent Tissue-Specific Insulin Sensitivity

Frontiers in Endocrinology, 2019
Background: Insulin plays a pivotal role in the regulation of both carbohydrate and lipid intermediate turnover and metabolism. In the transition from a fasted to fed state, insulin action inhibits lipolysis in adipocytes, and acylcarnitine synthesis in ...
Elina Makarova, Elina Makarova, Marina Makrecka-Kuka, Marina Makrecka-Kuka, Karlis Vilks, Karlis Vilks, Kristine Volska, Kristine Volska, Eduards Sevostjanovs, Solveiga Grinberga, Olga Zarkova-Malkova, Maija Dambrova, Maija Dambrova, Edgars Liepinsh   +13 more
doaj   +1 more source

Keratin/Hydrotalcites Hybrid Sponges as Promising Adsorbents for Cationic and Anionic Dyes

Frontiers in Bioengineering and Biotechnology, 2020
In this work, keratin sponges were prepared by freeze-drying method and tested for adsorption of Azure A and Methyl Orange dyes. The obtained materials showed a porosity of 99.92% and a mean pore size dimension of about 91 μm. The use of oxidized sucrose
Tamara Posati, Arthur Listwan, Giovanna Sotgiu, Armida Torreggiani, Roberto Zamboni, Annalisa Aluigi   +5 more
doaj   +1 more source

Copper(II) complexes with fluorinated 5-aryl-2,2’-bipyridine-6(6’)-carboxylic acid tridentate ligands

Chimica Techno Acta
Three Cu(II) complexes containing (poly)fluorine ligands based on 5-aryl-2,2’-bipyridine-6(6’)-carboxylic acids have been synthesized for the first time. These complexes belong to either triclinic (P-1) or orthorhombic (Iba2) crystal systems. The packing
Timofey D. Moseev, Mikhail V. Varaksin, Alexey P. Krinochkin, Maria A. Valieva, Ekaterina A. Kudryashova, Yulia M. Sayfutdinova, Anastasiya V. Rybakova, Dmitry S. Kopchuk, Grigory V. Zyryanov, Youcef Ballou, Pavel A. Slepukhin, Vasiliy S. Gaviko, Valery N. Charushin, Oleg N. Chupakhin   +13 more
doaj   +1 more source

Stability and Phase Transitions of Nontoxic γ-Cyclodextrin-K⁺ Metal-Organic Framework in Various Solvents

Crystals, 2020
Cyclodextrin (CD) has been used to prepare biocompatible and nontoxic metal-organic frameworks (MOFs) suitable for biomedical applications as drug carriers.
Kristīne Krūkle-Bērziņa, Sergey Belyakov, Anatoly Mishnev, Kirill Shubin   +3 more
doaj   +1 more source

Entry to 2-aminoprolines via electrochemical decarboxylative amidation of N‑acetylamino malonic acid monoesters

Beilstein Journal of Organic Chemistry
The electrochemical synthesis of 2-aminoprolines based on anodic decarboxylation–intramolecular amidation of readily available N-acetylamino malonic acid monoesters is reported. The decarboxylative amidation under Hofer–Moest reaction conditions proceeds
Olesja Koleda, Janis Sadauskis, Darja Antonenko, Edvards Janis Treijs, Raivis Davis Steberis, Edgars Suna   +5 more
doaj   +1 more source