نتایج جستجو برای: 5 diphenyl 2

تعداد نتایج: 3165562  

2010
Liana Orola Mikelis V. Veidis

The crystal structure of the title compound, 2C(19)H(17)N(2) (+)·C(4)H(2)O(4) (2-), consists of centrosymmetric trimers built up of two crystallographically independent N,N'-diphenyl-benzamid-in-ium cations and one fumarate dianion, which is located on a centre of inversion. The components of the trimers are linked by N-H⋯O hydrogen bonding. In the cation, the outer rings make dihedral angles o...

Journal: :Molecules 2015
Anamaria D P Alexiou Carla C Decandio Sabrina da N Almeida Marcelo J P Ferreira Paulete Romoff Reginaldo C Rocha

A new trinuclear oxo-centered chromium(III) complex with formula [Cr3O(CH3CO2)6(L)(H2O)2] (L = 5-hydroxyflavone, known as primuletin) was synthetized and characterized by ESI mass spectrometry, thermogravimetry, and 1H-NMR, UV-Vis, and FTIR spectroscopies. In agreement with the experimental results, DFT calculations indicated that the flavonoid ligand is coordinated to one of the three Cr(III) ...

2008
Anna Kropidłowska Ilona Turowska-Tyrk Barbara Becker

In the crystal structure of the title complex, [Ni(C(5)H(8)NS(2))Cl(C(14)H(15)P)], the Ni atom is coordinated by an S,S'-chelating dithio-carbamate, a chloride and a diphenyl-ethyl-phosphine ligand in a distorted square-planar arrangement.

Journal: :Bioscience, biotechnology, and biochemistry 2004
Marellapudi S Ramachandra Somepalli Venkateswarlu Gottumukkala V Subbaraju

Microfolicoumarin (1), a prenylcoumarin from Cedrelopsis microfoliata, was synthesized from 2,4,5-trimethoxybenzaldehyde in five steps. 1 did not show significant antioxidative activity, but the key intermediates, esculetin (3) and 5-prenylesculetin (6), exhibited strong antioxidative activity in both the superoxide-radical and 1,1-diphenyl-2-picrylhydrazyl radical-scavenging models.

2014
Amit Kesarwani Po-Yuan Chiang Shih-Shiung Chen

The phenolic and antioxidant activity of ethanolic extract of two Japonica rice cultivars, Taikeng no. 16 (medium and slender grain) and Kaohsiung no. 139 (short and round grain), grown under organic and conventional farming were examined. Analyses shows that Kaohsiung no. 139 contains the highest amount of secondary metabolites and continuous farming can increase its production. Results also s...

2017
Shangshang Li Juan Li Jianjun Zhang Wenshuai Wang Xiuxiu Wang Huijuan Jing Zhenzhen Ren Zheng Gao Xinling Song Zhiyuan Gong Le Jia

The aim of this work was designed to investigate the antioxidant, antiaging, and hepatoprotective effects of alkali-extractable polysaccharides (AlAPS) and their three purified fractions (AlAPS-1, AlAPS-2, and AlAPS-3) from Agaricus bisporus in D-galactose induced aging mice. For in vitro antioxidant analysis, both AlAPS and its fractions exhibited moderate reducing power, Fe2+-chelating activi...

Journal: :Bioorganic & medicinal chemistry letters 2016
Qin-Ge Ma Kun Xu Zhi-Pei Sang Rong-Rui Wei Wen-Min Liu Ya-Lun Su Jian-Bo Yang Ai-Guo Wang Teng-Fei Ji Lu-Jun Li

Four new alkenes (1-4), and six known alkenes (5-12) were isolated from Murraya koenigii (L.) Spreng. Their structures were elucidated on the basis of spectroscopic analyses and references. Compounds (1-12) were evaluated for antioxidative activities. Among them, compounds 1, 2, 4, and 7 exhibited significant antioxidative activities using 2,2-diphenyl-1-picrylhydrazyl (DPPH) assay with IC50=21...

2011
IVA T. TODOROVA DANIELA I. BATOVSKA BISTRA A. STAMBOLIYSKA STOYAN P. PARUSHEV

Sixteen hydroxychalcones were synthesized in sufficient purity by the Claisen–Schmidt condensation between appropriate acetophenones and aromatic aldehydes. All the compounds were evaluated for their ability to scavenge the stable free 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical. Important structure–activity relationships were observed that strongly contribute to the knowledge for the design o...

Journal: :Central European journal of public health 2004
J Klecáková V Chobot L Jahodár I Laakso P Víchová

2,2-Diphenyl-1-picrylhydrazyl (DPPH) assay and nitroprusside assay were used for in vitro study of antiradical/scavenger activity of Philadelphus coronarius petal substances. The results obtained can be used as the basis for further studies of this type of the biological effects in the plant.

2014
A Bharathi Selvaraj Mohana Roopan Abdul Abdul Rahuman Govindasamy Rajakumar

Many naturally occurring and synthetic compounds containing dihydrocyanopyridine and cyanopyran moiety show pharmacological properties. The aim of this study is to investigate the larvicidal and antioxidant potential of dihydrophenanthroline-3-carbonitrile derivatives 4a-f. A novel series of 2-amino-10-chloro-4,12-diphenyl-1,4,5,6-tetrahydrobenzo[j][1,7]phenanthroline-3-carbonitrile derivatives...

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