Results 51 to 60 of about 4,409 (215)

Inhibition of mouse liver respiration by Chelidonium majus isoquinoline alkaloids [PDF]

, 2003
Copyright © 2003 Elsevier Ireland Ltd. All rights reserved.The alkaloids from Chelidonium majus L. which had a significant inhibitory effect in mitochondrial respiration were those which contain a positive charge due to a quaternary nitrogen atom, i.e ...
Arrabaça, João Daniel, Barreto, Maria do Carmo, Pavão, Maria Leonor, Pinto, Ruy Eugénio   +3 more
core   +1 more source

Monosubstituted N‐Arylhydroxylamine Chemistry: Integrating Contemporary Synthetic Approaches for the Efficient Construction of Diverse Heterocyclic Scaffolds

Chemistry – A European Journal, EarlyView.
Monosubstituted N‐arylhydroxylamines represent a unique subclass of hydroxylamines that act as pivotal intermediates in redox transformations and as versatile platforms for further synthetic transformations. They serve as key building blocks in the synthesis of architecturally complex heterocycles and other valuable organic compounds.
Michael G. Kallitsakis, Kyriakos D. Nikopoulos, Ioannis N. Lykakis   +2 more
wiley   +1 more source

Gas-phase infrared spectra of cationized nitrogen-substituted polycyclic aromatic hydrocarbons [PDF]

, 2010
Gas-phase infrared spectra of several ionized nitrogen substituted polycyclic aromatic hydrocarbons (PANHs) have been recorded in the 600-1600 cm(-1) region via IR multiple-photon dissociation (IRMPD) spectroscopy.
Allamandola, Andersson, Barker, Bauschlicher, Bauschlicher, Becke, Beegle, Bernstein, Bregman, Charnley, Cook, Dewar, Dolgounitcheva, Don McNaughton, Douberly, Dunbar, Elsila, Felker, Gibb, H. Alvaro Galué, Hony, Hudgins, Hudgins, Hudgins, Hudgins, J. Oomens, Joblin, Joblin, Kim, Knorke, Kurtz, Langhoff, Leger, Lehmann, Lorenz, Mattioda, Mattioda, Mattioda, McLuckey, McNaughton, Munson, O. Pirali, Oepts, Oomens, Oomens, Oomens, Oomens, Oomens, Oomens, Paul, Pauzat, Peeters, Peeters, Piest, Piest, Pino, Pirali, Ricca, Ricks, Sephton, Sloan, Sloan, Szczepanski, Szczepanski, Tielens, Vala, Vala   +66 more
core   +5 more sources

Design, Synthesis, and Photophysical Studies of Functionalized Polyaromatic Isonitriles as Visible Light Photoredox Catalysts

European Journal of Organic Chemistry, EarlyView.
A new series of structurally rich polyaromatic isonitriles is presented as photoredox catalysts. Their photophysical properties are investigated by UV–Vis absorption and fluorescence measurements, combined with experimental and theoretical studies to evaluate both ground‐ and excited‐state redox properties.
Cristina Martini, Camilla Russo, Jussara Amato, Carmine Volpe, Francesca Brunelli, Laurence Grimaud, Maxime R. Vitale, Greta Donati, Andrea Basso, Mariateresa Giustiniano   +9 more
wiley   +1 more source

Chemical Constituents of and their Cytotoxic Activities

Natural Product Communications, 2011
An alcoholic extract of Lycoris albiflora (Amaryllidaceae) showed potent cytotoxic activity against HL-60 cells with an IC 50 value of 1.7 μg/mL.
Maki Jitsuno, Akihito Yokosuka, Ken Hashimoto, Osamu Amano, Hiroshi Sakagami, Yoshihiro Mimaki   +5 more
doaj   +1 more source

In vitro Anti-Inflammatory Potency of Sanguinarine and Chelerythrine via Interaction with Glucocorticoid Receptor

eFood, 2021
As quaternary benzo[c]phenanthridine alkaloids, sanguinarine and chelerythrine possess multiple biological activities including anti-inflammatory effects.
Jie Zhang, Yuan Liang, Li Ren, Tiehua Zhang   +3 more
doaj   +1 more source

In Vitro Activity of Plant Extracts and Alkaloids against Clinical Isolates of Extended-Spectrum b-Lactamase (ESBL)-Producing Strains [PDF]

, 2011
The antibacterial activity of 80% ethanol extracts of 10 medicinal plants collected in Yunnan (Southwest China), was tested against clinical isolates of extended-spectrum b-lactamase (ESBL)-producing strains. Their MIC values ranged between 1.56–12.50 mg/
Fan-Yan Meng, Farmer, Gen-Chun Wang, Guo-Ying Zuo, Jun Han, Pitout, Qing Zhang, Xiao-Yan Hao, Yun-Ling Zhang, Zuo   +9 more
core   +2 more sources

Mo‐Catalyzed Synthesis of N‐Polyheterocycles From Functionalized Nitroarenes and Aldehydes

Asian Journal of Organic Chemistry, Volume 15, Issue 5, May 2026.
Mo(VI)‐catalyzed one‐pot conversion of readily available functionalized nitroarenes and aldehydes yielded fused N‐polyheterocycles by sequential nitro reduction, imine formation, and cyclization. Using pinacol as a benign reductant, this sustainable tandem strategy suppresses side reactions and grants rapid access to diverse pharmacologically relevant ...
Raúl Martínez‐González, Rubén Rubio‐Presa, María R. Pedrosa, Samuel Suárez‐Pantiga, Roberto Sanz   +4 more
wiley   +1 more source

Crystal structure of (E)-4-benzylidene-6-phenyl-1,2,3,4,7,8,9,10-octahydrophenanthridine

Acta Crystallographica Section E: Crystallographic Communications, 2017
The preparation of the title compound, C26H25N, was achieved by the condensation of an ethanolic mixture of benzaldehyde, cyclohexanone and ammonium acetate in a 2:1:1 molar ratio.
Baidaa K. Al-Rubaye, Alice Brink, Gary J. Miller, Herman Potgieter, Mohamad J. Al-Jeboori   +4 more
doaj   +1 more source

A covalently linked phenanthridine-ruthenium(II) complex as a RNA probe [PDF]

, 2009
A phenanthridine derivative covalently linked to a ruthenium complex yields an imaging probe whose fluorescence intensity and lifetime change substantially in the presence of ...
Akins, Daniel L., Dyer, Joanne, Kandel, Eric, Martí, Angel A., O'Connor, Naphtali A., Samaroo, Diana, Solomon, Marissa Rowanda, Stevens, Nathan, Turro, Nicholas J., Vishwasrao, Harshad   +9 more
core   +2 more sources