Results 31 to 40 of about 330,072 (330)

Observation of micropores in hard-carbon using Xe-129 NMR porosimetry [PDF]

, 2008
The existence of micropores and the change of surface structure in pitch-based hard-carbon in xenon atmosphere were demonstrated using Xe-129 NMR. For high-pressure (4.0 MPa) Xe-129 NMR measurements, the hard-carbon samples in Xe gas showed three peaks ...
Ago, Aisaku Nagai, Azuma, Barrie, Conard, Dahn, De Dios, Demarquay, Franklin, Gotoh, Guerin, Hironori Omi, Hiroyuki Ishida, Ito, Jenkins, Kato, Kazuma Gotoh, Kentgens, Kneller, Mariko Maeda, Michihisa Miyahara, Mitani, Moudrakovski, Nagao, Nagasaka, Nossov, Omi, Omi, Ripmeester, Ripmeester, Romanenko, Romanenko, Saito, Springuel-Huet, Springuel-Huet, Suh, Syamala, Takahiro Ueda, Tanjo, Taro Eguchi, Tatsumi, Tatsumi, Tokumitsu, Tomaselli, Ueda, Yamazaki   +45 more
core   +1 more source

Probing Hepatic Glucose Metabolism via ¹³C NMR Spectroscopy in Perfused Livers—Applications to Drug Development

Metabolites, 2021
Despite being first published over 40 years ago, the combination of 13C nuclear magnetic resonance spectroscopy (NMR) and the isolated perfused liver preparation remains a unique and relevant approach in investigating the effects of pharmacological ...
Corin O. Miller, Jin Cao
doaj   +1 more source

Synthesis, Spectroscopic Studies and Keto-Enol Tautomerism of Novel 1,3,4-Thiadiazole Derivative Containing 3-Mercaptobutan-2-one and Quinazolin-4-one Moieties

Molecules, 2020
In this study, a novel 1,3,4-thiadiazole derivative containing 3-mercaptobutan-2-one and quinazolin-4-one moieties (Compound 3) is synthesized by the coupling of 2-amino-1,3,4-thiadiazole-5-(3-mercaptobutan-2-one) (Compound 1) with 2-Phenyl-4H-3,1 ...
Sewara J. Mohammed, Akam K. Salih, Mohammad Amin M. Rashid, Khalid M. Omer, Karzan A. Abdalkarim   +4 more
doaj   +1 more source

4-(4-(((1H-Benzo[d][1,2,3]triazol-1-yl)oxy)methyl)-1H-1,2,3-triazol-1-yl)-7-chloroquinoline

Molbank, 2022
The 1,2,3-triazole ring system can be easily obtained by widely used copper-catalyzed click reaction of azides with alkynes. 1,2,3-triazole exhibits myriad of biological activities, including antibacterial antimalarial, and antiviral activities.
Leong Ka Fai, Margrate Anyanwu, Jiang Ai, Yuhan Xie, Alessandra Gianoncelli, Giovanni Ribaudo, Paolo Coghi   +6 more
doaj   +1 more source

Structural changes in lipid-free humic acids during composting of sewage sludge [PDF]

, 2005
Structural changes in humic acids (HAs), extracted after lipid removal from sewage sludge during composting, were investigated using various chemical methods (elemental analysis, Fourier transform infrared spectroscopy and 13C-nuclear magnetic resonance
Amir, Soumia, Hafidi, Mohamed, Merlina, Georges, Revel, Jean-Claude   +3 more
core   +3 more sources

Protonation and ring closure of stereoisomeric alpha-substituted cinnamic acids in superacidic media studied by 13C NMR spectroscopy and computations [PDF]

, 1998
Five alpha-substituted cinnamic acids [(E)- and (Z)-2,3-diphenyl-, (E)- and (Z)-3-(2-methoxyphenyl)-2-phenyl- and (E)-2-(2-methoxyphenyl)-3-phenyl-propenoic acids] have been protonated in fluorosulfonic acid at -78 degrees C, Protonation of the ...
Burrichter, Arwed, Olah, George A., Prakash, Surya G.K, Pálinkó, István, Rasul, Golam, Török, Béla   +5 more
core   +1 more source

Design and Synthesis of a Novel Banana-Shaped Functional Molecule via Double Cross-Coupling

Molecules, 2019
A novel banana-shaped molecule using 2,8-Dimethyl-6H,12H-5,11-methanodibenzo [b,f] [1,5]diazocine (Tröger’s base) as bent-core was synthesized via double Carbon-Carbon cross-coupling reaction. The double Sonogashira cross-coupling reaction was
Bingchuan Yang, Guodong Shen, Xianqiang Huang, Rutao Liu   +3 more
doaj   +1 more source

(2R,4aS,6aS,12bR,14aS,14bR)10-Hydroxy-N-(4-((6-methoxyquinolin-8-yl)amino)pentyl)-2,4a,6a,9,12b,14a-hexamethyl-11-oxo-1,2,3,4,4a,5,6,6a,11,12b,13,14,14a,14b-tetradecahydropicene-2-carboxamide

Molbank, 2023
We herein report the synthesis of a derivative of the natural compound celastrol linked to the antimalarial drug primaquine through an amide obtained by the activation of the carboxylic acid with HOBt/EDC.
Yuhan Xie, Houin Kuan, Qin Wei, Alessandra Gianoncelli, Giovanni Ribaudo, Paolo Coghi   +5 more
doaj   +1 more source

Asymmetric Meerwein-Ponndorf-Verley reduction of long chain keto alkanoic acid methyl esters [PDF]

Journal of the Serbian Chemical Society, 2007
3-, 7- and 13-Monoketo tetradecanoic acid methyl esters carrying a keto group at the ends and at the middle of the chain with 14 carbon atoms were reduced by a Meerwein-Ponndorf-Verley reaction in the presence of R-(+)-1,1'-binaphthalene- 2,2'-diol, 1,2 ...
Onar Çelik Hülya, Hasdemir Belma, Yusufoğlu Ayse   +2 more
doaj   +3 more sources

Uprolides N, O and P from the Panamanian Octocoral Eunicea succinea. [PDF]

, 2016
Three new diterpenes, uprolide N (1), uprolide O (2), uprolide P (3) and a known one, dolabellane (4), were isolated from the CH₂Cl₂-MeOH extract of the gorgonian octocoral Eunicea succinea, collected from Bocas del Toro, on the Caribbean coast of Panama.
Fernandez, Patricia L, Gerwick, William H, González, Yisett, Gutiérrez, Marcelino, Guzmán, Héctor M, Gómez-Reyes, José Félix, López-Perez, José Luis, Torres-Mendoza, Daniel   +7 more
core   +2 more sources