Results 231 to 240 of about 22,032 (252)

Solvatochromic hydrazone anions derived from chalcones

Dyes and Pigments, 2008
Abstract The preparation and solvatochromism of anions derived from the 2,4-dinitrophenylhydrazones of 1,3-diphenylpropenone, 1-phenyl-3-(4-nitrophenyl)propenone and 1-phenyl-3-(2-thienyl)propenone are described and their behaviour was interpreted in terms of theoretical calculations of their internal charge-transfer transitions.
Daniela Millán, Moisés Domínguez, Marcos Caroli Rezende   +2 more
openaire   +1 more source

Novel diphenysulphapyrimidine acetates derived from chalcones

Journal of Heterocyclic Chemistry, 1989
AbstractCyclocondensation of sulphaguanidine acetate with chalcones in dimethylsulphoxide at 110° gave 4,6‐diphenylsulphapyrimidine acetates.
C. O. Usifoh, T. A. Olugbade, G. O. Onawumi, J. O. Oluwadiya, J. Reisch   +4 more
openaire   +1 more source

Dimeric chalcone derivatives from Mallotus philippensis

Phytochemistry, 1998
Two new chalcone derivatives with a unique ring system caused by dimerization between a dimethylchromene ring and a phenoxyl group, were isolated from kamala (Mallotus philippensis). The structures were determined by spectral analysis.
Toshiyuki Tanaka, Tetsuro Ito, Munekazu Iinuma, Yoshikazu Takahashi, Hiroshi Naganawa   +4 more
openaire   +1 more source

Synthesis and antimalarial activity of sulfonamide chalcone derivatives

Il Farmaco, 2005
A series of sulfonamide chalcone derivatives were synthesized and investigated for their abilities to inhibit beta-hematin formation in vitro and their activity against cultured Plasmodium falciparum parasites. Inhibition of beta-hematin formation was minimal in the aromatic ring of the chalcone moiety as it appeared for compounds 4b, 4d-f, and ...
José N, Domínguez, Caritza, León, Juan, Rodrigues, Neira, Gamboa de Domínguez, Jiri, Gut, Philip J, Rosenthal   +5 more
openaire   +2 more sources

Synthesis and biological activities of fluorinated chalcone derivatives

Bioorganic & Medicinal Chemistry, 2002
We have designed and synthesized new 5-lipoxygenase inhibitors, fluorinated 3,4-dihydroxychalcones, and evaluated their biological activities with respect to antiperoxidation activity and in vitro antitumor activities. All fluorinated chalcones tested showed 5-lipoxygenase inhibition on rat basophilic leukemia-1 (RBL-1) cells and inhibitory action on ...
Chika, Nakamura, Nobuhide, Kawasaki, Hideki, Miyataka, Ezhuthachan, Jayachandran, In Ho, Kim, Kenneth L, Kirk, Takeo, Taguchi, Yoshio, Takeuchi, Hitoshi, Hori, Toshio, Satoh   +9 more
openaire   +2 more sources

Chalcone derivatives and their antibacterial activities: Current development

Bioorganic Chemistry, 2019
The increase in antibiotic resistance due to various factors has encouraged the look for novel compounds which are active against multidrug-resistant pathogens. In this framework, chalcone-based compounds showed a diversity of pharmacological properties, and its derivatives possess a high degree of structural diversity, and it is helpful for the ...
Man, Xu, Piye, Wu, Fan, Shen, Jiayou, Ji, K P, Rakesh   +4 more
openaire   +2 more sources

Development of chalcone-based derivatives for sensing applications

Analytical Methods, 2020
In this review, design strategies, sensing mechanism, and sensing performance of ion chemosensors based on various chalcone derivatives are described using extensive examples. We believe that this review provides valuable information for researchers of related areas.
Ankush Gupta, Shelly Garg, Harminder Singh   +2 more
openaire   +2 more sources

β-Ionone derived chalcones as potent antiproliferative agents

European Journal of Medicinal Chemistry, 2013
A series of β-ionone derived chalcones were evaluated for cytotoxic activity against various human cancer cell lines using SRB dye assay. All the compounds displayed moderate to high cytotoxic effect against almost all the cancer cell lines. The results also revealed the effect of substituents of the aromatic ring on their inhibitory potential.
Vishal, Sharma, Ashun, Chaudhary, Saroj, Arora, Ajit K, Saxena, Mohan Paul S, Ishar   +4 more
openaire   +2 more sources

Anti-inflammatory cyclohexenyl chalcone derivatives in Boesenbergia pandurata

Phytochemistry, 2002
The cyclohexenyl chalcone derivative [(-)-hydroxypanduratin A], together with the previously known panduratin A, sakuranetin, pinostrobin, pinocembrin, and dihydro-5,6-dehydrokawain were isolated from the chloroform extract of the red rhizome variety of Boesenbergia pandurata (Robx.) Schltr.
Patoomratana, Tuchinda, Vichai, Reutrakul, Per, Claeson, Ubonwan, Pongprayoon, Tuanta, Sematong, Thawatchai, Santisuk, Walter C, Taylor   +6 more
openaire   +2 more sources

Novel Resveratrol-chalcone Derivatives: Synthesis and Biological Evaluation

Mini-Reviews in Medicinal Chemistry, 2019
Introduction: Resveratrol and chalcones are lead compounds with good biological activities. </P><P> Method: In this study, a series of novel derivatives (6-38) between resveratrol and chalcone possessing piperazine moiety have been synthesized, and in vitro anti-inflammatory activity in lipopolysaccharide (LPS)-stimulated RAW-264.7 ...
Yulu, Ma, Xi, Zheng, Ping, Zhu, Bei, Liu, Hui, Gao, Zewei, Mao, Lijun, Zhang, Chunping, Wan   +7 more
openaire   +2 more sources