Results 41 to 50 of about 1,361 (163)

Synthesis and Antimicrobial Activity of 1-[2-(10-p-Chlorobenzyl) phenothiazinyl]-3-(substituted aryl)-2-propen-1-ones

E-Journal of Chemistry, 2009
Aiming at the development of antimicrobial agents, we have synthesized nine chlorobenzyl substituted phenothiazinyl chalcones by condensing 2-acetyl phenothiazine with aldehyde derivatives in dilute ethanolic sodium hydroxide solution at room temperature
R. K. Upadhyay, Megha S. Upadhyay, S. Jain   +2 more
doaj   +1 more source

SYNTHESIS, CHARACTERIZATION AND ANTIOXIDANT ACTIVITY OF 7-HYDROXY-3',4'-DIMETHOXYFLAVONE

Indonesian Journal of Chemistry, 2012
Synthesis of flavones and their derivatives has attracted considerable attention due to their significant pharmaceutical effects. 7-hydroxy-3',4'-dimethoxyflavone has been synthesized and its antioxidant activity has been investigated.
Elfi Susanti VH, Sabirin Matsjeh, Tutik Dwi Wahyuningsih, Mustofa Mustofa, Tri Redjeki   +4 more
doaj   +1 more source

CHALKONES. STUDIES IN THE CLAISEN-SCHMIDT CONDENSATION

, 1960
CHALKONES.
openaire   +1 more source

Synthesis and Biological Evaluation of Some New Chalcones Containing 2,5-Dimethylfuran Moiety

E-Journal of Chemistry, 2011
A series of new chalcones (3a-g) were prepared by Claisen-Schmidt condensation of 3-acetyl-2,5-dimethylfuran with various substituted aromatic aldehydes in presence of aqueous solution of potassium hydroxide and ethanol at room temperature.
S. Sridhar, S. C. Dinda, Y. Rajendra Prasad   +2 more
doaj   +1 more source

Synthesis and Antimicrobial Activity of Some Novel Chalcones of 2-Hydroxy -1-Acetonapthone and 3-Acetyl Coumarin

E-Journal of Chemistry, 2006
Five novel chalcones were synthesised by condensing 2-hydroxy-1-acetonaphthone with aldehyde derivatives in dilute ethanolic potassium hydroxide solution at room temperature according to Claisen-Schmidt condensation and another five novel chalcones were ...
Y. Rajendra Prasad, P. Ravi Kumar, Ch. Asha Deepti, M. Venkata Ramana   +3 more
doaj   +1 more source

Original enzyme-catalyzed synthesis of chalcones: Utilization of hydrolase promiscuity [PDF]

Journal of the Serbian Chemical Society, 2016
E-chalcone was obtained with very high stereoselectivity for the first time by an enzyme-catalyzed Claisen-Schmidt condensation between benzaldehyde and acetophenone.
Mitrev Yavor N., Mehandzhiyski Aleksander Y., Batovska Daniela I., Liese Andreas, Galunsky Boris   +4 more
doaj   +1 more source

Evaluation of the radical scavenging activity of a series of synthetic hydroxychalcones towards the DPPH radical [PDF]

Journal of the Serbian Chemical Society, 2011
Sixteen hydroxychalcones were synthesized in sufficient purity by the Claisen–Schmidt condensation between appropriate acetophenones and aromatic aldehydes.
STOYAN P. PARUSHEV, BISTRA A. STAMBOLIYSKA, DANIELA I. BATOVSKA, IVA T. TODOROVA   +3 more
doaj  

Optimized Synthesis of Dinitrochalcones via Ultrasonic Bath in a Cyclohexane–Methanol Solvent System

Organics
This study describes the efficient synthesis of five dinitrochalcones (DNCHs) using an ultrasonic bath as an unconventional method to improve reaction yields and reduce reaction times.
Alam Yair Hidalgo, Quirino Torres-Sauret, Carlos Ernesto Lobato-García, Erika Madeleyne Ramos-Rivera, Luis Fernando Roa de la Fuente, Abraham Gómez-Rivera, Miguel Ángel Vilchis-Reyes, Erika Alarcón-Matus, Oswaldo Hernández-Abreu, Nancy Romero-Ceronio   +9 more
doaj   +1 more source

Design and Synthesis of New Chacones Substituted with Azide/Triazole Groups and Analysis of Their Cytotoxicity Towards HeLa Cells

Molecules, 2012
A series of new chalcones substituted with azide/triazole groups were designed and synthesized, and their cytotoxic activity was evaluated <em>in vitro</em> against the HeLa cell line.
José A. F. P. Villar, Gustavo H. R. Viana, Leandro A. Barbosa, Fernando P. Varotti, Sarah C. Simões, Andersson Barison, Estrela M. P. V. E. Souza, Marina G. da Silva, Graziele D. da Silva   +8 more
doaj   +1 more source

Molecular structure, DFT studies and UV–Vis absorption of two new linear fused ring chalcones: (E)-1-(anthracen-9-yl)-3-(2-methoxyphenyl)prop-2-en-1-one and (E)-1-(anthracen-9-yl)-3-(3-fluoro-4-methoxyphenyl)prop-2-en-1-one

Acta Crystallographica Section E: Crystallographic Communications, 2018
The title compounds, C24H18O2 and C24H17FO2, were synthesized using the Claisen–Schmidt condensation method and characterized by UV–Vis spectroscopy. Weak intermolecular C—H...O, C—H...π and π–π hydrogen-bonding interactions help to stabilize the crystal
Dian Alwani Zainuri, Ibrahim Abdul Razak, Suhana Arshad   +2 more
doaj   +1 more source