Results 21 to 30 of about 3,844 (181)

6-tert-Butyl-4-[(4-hydroxymethyl-2H-1,2,3-triazol-2-yl)methyl]-2H-chromen-2-one

IUCrData, 2016
In the title compound, C17H19N3O3, the triazole ring and the chromene ring system [maximum deviation = 0.018 (2) Å for the O atom] bridged via a methylene C atom, are inclined to one another by 73.2 (1)°.
Nasseem El-Khatatneh, Chandra, D. Shamala, K. Shivashankar, M. Mahendra   +4 more
doaj   +1 more source

New insights in the discovery of novel h-MAO-B inhibitors: structural characterization of a series of N-phenyl-4-oxo-4H-chromene-3-carboxamide derivatives

Acta Crystallographica Section E: Crystallographic Communications, 2015
Six N-substituted-phenyl 4-oxo-4H-chromene-3-carboxamides, namely N-(2-nitrophenyl)-4-oxo-4H-chromene-3-carboxamide, C16H10N2O5 (2b), N-(3-methoxyphenyl)-4-oxo-4H-chromene-3-carboxamide, C17H13NO4, (3a), N-(3-bromophenyl)-4-oxo-4H-chromene-3-carboxamide,
Ligia R. Gomes, John Nicolson Low, Fernando Cagide, Daniel Chavarria, Fernanda Borges   +4 more
doaj   +1 more source

Agarwood—The Fragrant Molecules of a Wounded Tree

Molecules, 2022
Agarwood, popularly known as oudh or gaharu, is a fragrant resinous wood of high commercial value, traded worldwide and primarily used for its distinctive fragrance in incense, perfumes, and medicine.
Pooja Shivanand, Nurul Fadhila Arbie, Sarayu Krishnamoorthy, Norhayati Ahmad   +3 more
doaj   +1 more source

The crystal structures of four N-(4-halophenyl)-4-oxo-4H-chromene-3-carboxamides

Acta Crystallographica Section E: Crystallographic Communications, 2015
Four N-(4-halophenyl)-4-oxo-4H-chromene-3-carboxamides (halo = F, Cl, Br and I), N-(4-fluorophenyl)-4-oxo-4H-chromene-3-carboxamide, C16H10FNO3, N-(4-chlorophenyl)-4-oxo-4H-chromene-3-carboxamide, C16H10ClNO3, N-(4-bromophenyl)-4-oxo-4H-chromene-3 ...
Ligia R. Gomes, John Nicolson Low, Fernando Cagide, Fernanda Borges   +3 more
doaj   +1 more source

Determination of Chromones in by HPLC: Method Development, Validation and Comparison of Different Extraction Methods

Natural Product Communications, 2010
An HPLC method with reflux as an efficient extraction method has been developed for quantification of chromones in Dysophylla stellata Benth. Separation was achieved on a C 18 column with a mobile phase of 0.5% (v/v) acetic acid in water (A), and ACN (B)
Raju Gautam, Amit Srivastava, Sanjay M. Jachak   +2 more
doaj   +1 more source

Analysis of Antioxidant Capacity of Chromones in Saposhnikoviae Radix Obtained by Ultrasonic-Assisted Deep Eutectic Solvents Extraction

Journal of Analytical Methods in Chemistry, 2020
In this paper, ultrasonic-assisted deep eutectic solvent (DES) extraction was applied to the acquisition of chromones (cimicifugin, prim-o-glucosylcimifugin, and 5-o-methylvisamminoside) from Saposhnikoviae radix (SR).
Xianwen Yue, Fangfei Xu, Peng Lv, Huailei Yang, Huiwei Bao, Yang Xu   +5 more
doaj   +1 more source

New Chromones from Bouvardia ternifolia (Cav.) Schltdl with Anti-Inflammatory and Immunomodulatory Activity

Plants, 2022
The extract, fractions, and compounds of the Bouvardia ternifolia root were evaluated as an antiarthritic using a complete Freund’s adjuvant (CFA) model in mice and NF-κB inhibition in RAW 264.7 macrophages.
Yury Maritza Zapata Lopera, Enrique Jiménez-Ferrer, Maribel Herrera-Ruiz, Alejandro Zamilpa, Manasés González-Cortazar, Gabriela Rosas-Salgado, Mayra Alejandra Santillán-Urquiza, Gabriela Trejo-Tapia, Antonio Ruperto Jiménez-Aparicio   +8 more
doaj   +1 more source

Epigenetic Manipulation Induced Production of Immunosuppressive Chromones and Cytochalasins from the Mangrove Endophytic Fungus Phomopsis asparagi DHS-48

Marine Drugs, 2022
A mangrove endophytic fungus Phomopsis asparagi DHS-48 was found to be particularly productive with regard to the accumulation of substantial new compounds in our previous study.
Ting Feng, Chengwen Wei, Xiaolin Deng, Dandan Chen, Zhenchang Wen, Jing Xu   +5 more
doaj   +1 more source

Characterization of Potent ABCG2 Inhibitor Derived from Chromone: From the Mechanism of Inhibition to Human Extracellular Vesicles for Drug Delivery

Pharmaceutics, 2023
Inhibition of ABC transporters is a promising approach to overcome multidrug resistance in cancer. Herein, we report the characterization of a potent ABCG2 inhibitor, namely, chromone 4a (C4a).
Glaucio Valdameri, Diogo Henrique Kita, Julia de Paula Dutra, Diego Lima Gomes, Arun Kumar Tonduru, Thales Kronenberger, Bruno Gavinho, Izadora Volpato Rossi, Mariana Mazetto de Carvalho, Basile Pérès, Ingrid Fatima Zattoni, Fabiane Gomes de Moraes Rego, Geraldo Picheth, Rilton Alves de Freitas, Antti Poso, Suresh V. Ambudkar, Marcel I. Ramirez, Ahcène Boumendjel, Vivian Rotuno Moure   +18 more
doaj   +1 more source

One-pot Synthesis of 6-Aza-chromone Derivatives Through Cascade Carbonylation-Sonogashira-Cyclization

Scientific Reports, 2017
We developed an efficient synthesis of aza-chromones from 3-iodo-4-(1H)-pyridones and terminal acetylenes via a cascade carbonylation-Sonogashira-cyclization reaction.
Gang Cheng, Yingbei Qi, Xiaoqian Zhou, Rong Sheng, Yong-Zhou Hu, Youhong Hu   +5 more
doaj   +1 more source