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Journal articles on the topic 'Phenol(alkyl-2 methoxy-4)|fin'

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Published: 4 June 2021
Last updated: 11 February 2022

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1

Jirovetz, Leopold, Gerhard Buchbauer, Andrea Wobus, Mohamed P. Shafi, and Beena Jose. "Medicinal used plants from lndia: analysis of the essential oil of air-dried Biophvtum sensitivum (L.) DC." Scientia Pharmaceutica 72, no. 1 (2004): 87–96. http://dx.doi.org/10.3797/scipharm.aut-04-08.

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The essential oil of the air-dried plant Biophytum sensitivum (L.) DC. (Oxalidaceae) from Southern lndia was investigated by gas chromatographic-spectroscopic (GC-FID and GC-MS) and olfactoric methods to identify compounds responsible for the characteristic odor as well as partly for the folk medicinal use of this plant. Especially benzene derivatives, such as 1,4-dimethoxy benzene (24.9%), 1,2-dimethoxy benzene (10.6%) and 2-methoxy-4-methyl phenol (3.5%), the monoterpenes (Z)-linalool oxide (8.1%), (E)-linalool oxide (5.2%) and linalyl acetate (3.4%) as well as l-octen-3-ol (9.5%) and isopho
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2

Joshi, Rajesh K. "Chemical Composition of the Essential oil ofChromolaena odorata(L.) R. M. King & H. Rob. Roots from India." Journal of Chemistry 2013 (2013): 1–4. http://dx.doi.org/10.1155/2013/195057.

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The hydrodistilled essential oil of the roots ofChromolaena odorata(L.) R. M. King & H. Rob. was analysed by gas chromatography equipped with flame ionization detector (GC-FID) and gas chromatography coupled with mass spectrometry (GC/MS). A total of twenty-nine compounds have been identified, accounting 97.6% of the total oil. The main constituents were himachalol (24.2%), 7-isopropyl-1,4-dimethyl-2-azulenol (17.6%), androencecalinol (14.1%), and 2-methoxy-6-(1-methoxy-2-propenyl) naphthalene (5.6%). The essential oil consists mainly of phenyl derivatives (41.6%), followed by oxygenated s
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3

Pincock, A. L., and J. A. Pincock. "The structure, photochemical reactivity, and photophysical properties of adamantyl X-substituted aryl ethers and a comparison with the alkyl groups, methyl, tert-butyl, and allyl." Canadian Journal of Chemistry 83, no. 9 (2005): 1237–52. http://dx.doi.org/10.1139/v05-117.

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The structure, photophysical properties, and photochemistry of the adamantyl aryl ethers 1 in both methanol and cyclohexane have been examined. UV absorption spectra, 13C NMR chemical shifts, X-ray structures, and Gaussian calculations (B3LYP/6-31G(d)) indicate that these ethers adopt a 90° conformer in the ground state. In contrast, fluorescence spectra, excited singlet state lifetimes, and calculations (TDDFT) indicated a 0° conformer is preferred in the first excited singlet state S1. Irradiation in either solvent results in the formation of adamantane and the corresponding phenol as the ma
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4

Lu, Andy Z., Thomas Q. Hu, David A. Osmond, Brian O. Patrick, and Brian R. James. "Tetrazole ethers from lignin model phenols: synthesis, crystal structures, and photostability." Canadian Journal of Chemistry 79, no. 8 (2001): 1201–6. http://dx.doi.org/10.1139/v01-110.

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The phenolic OH moiety in lignin is one of the key functional groups responsible for the photo-induced yellowing of mechanical wood pulps and papers. To evaluate new protective groups for the stabilization of lignin phenols, the model compounds, 2-methoxy-4-propylphenol (1) and 4-hydroxy-3-methoxyacetophenone (2) were reacted with 5-chloro-1-phenyl-1H-tetrazole to give the corresponding tetrazole ethers 1' and 2', respectively, that were then studied for their photostability. The synthesis of these ethers was more efficient than that of alkyl ethers because of less hydrolysis of the alkylating
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5

Journal, Baghdad Science. "Synthesis of some Schiff's bases derivatives from aminoazo compounds." Baghdad Science Journal 4, no. 3 (2007): 416–19. http://dx.doi.org/10.21123/bsj.4.3.416-419.

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Reaction of,2- [( 4- amio phenyl ) diazenyl] 1,3,4- thiadiazole -5- thiol (S1) with p- chlorobenzeldehyde,3,4 – dimethoxy benzaldehyde and pyrrol-2- carbonxaldehyde gave -5- [{4-(4-chlorobenzylidene amino) phenyl} diezenyl]-1,3,4- thiadiazole-2- thiol (S2),5-[{ 4-[(3,4- dimethoxybenzyldene )amino phenyl ] diazenyl)-1,3,4- thiadiazole-2-thiol,(S3) and -5- [4-(1,H – pyrrol -2- yl- methylene)amino phenyl] diazenyl)-1,3,4- thiadiazole-2- thiol (S4) respectively as schiff's bases compounds. On the same route-2-[(4-amino-1- naphthyl ) diazenyl] -1,3,4- thiadiazole -5- thiol (S5) reacts with –p- chlo
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6

Ceesay, Abdoulie, Mariana Nor Shamsudin, Mohammed Aliyu-Paiko, Intan Safinar Ismail, Muhammad Farhan Nazarudin, and Norfarrah Mohamed Alipiah. "Extraction and Characterization of Organ Components of the Malaysian Sea Cucumber Holothuria leucospilota Yielded Bioactives Exhibiting Diverse Properties." BioMed Research International 2019 (April 15, 2019): 1–16. http://dx.doi.org/10.1155/2019/2640684.

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The aim of the present study was to extract and characterize bioactive components from separate body organs of Holothuria leucospilota. Preliminary qualitative assessment of the crude extracts was positive for phenols, terpenoids, carbohydrates, flavonoids, saponins, glycosides, cardiac glycosides, steroids, phlobatannins, and tannins in all body organs evaluated. Phenolics were the most abundant group of bioactives accounting for approximately 80%. The extraction solvent mixtures that yielded most compounds evaluated were methanol/acetone (3:1, v:v) and methanol/distilled water (3:1, v:v). In
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7

Dinda Putri, Karina, Ni Luh Ari Yusasrini, and Komang Ayu Nocianitri. "Pengaruh Metode Pengolahan Terhadap Aktivitas Antioksidan Dan Karakteristik Teh Herbal Bubuk Daun Afrika (Vernonia amygdalina Delile)." Jurnal Ilmu dan Teknologi Pangan (ITEPA) 10, no. 1 (2021): 77. http://dx.doi.org/10.24843/itepa.2021.v10.i01.p08.

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This study aims to determine the effect of processing methods on antioxidant activity and characteristics of African leaf herbal tea and find out the right processing method to get the highest antioxidant activity and the best characteristics. The Completely Randomized Design was used in this study with treatment methods which consisted of 4 levels, namely Method A (steam blanching and drying), Method B (withering and pan firing) Method C (withering and Drying) and Method D (steam blanching and pan firing). This study was repeated 4 times to obtain 16 experimental units. The data obtained were
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8

Ouahrouch, Abdelaaziz, Moha Taourirte, Hassan Bihi Lazrek, Mohamed El Azhari, Joachim Engels та Jan Bats. "Synthesis and structural characterization of four related α-phosphonates". Acta Crystallographica Section A Foundations and Advances 70, a1 (2014): C1019. http://dx.doi.org/10.1107/s2053273314089803.

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α-Aminophosphonates are structural analogues of natural amino acids. They have been the subject of considerable attention due to their potential biological activities. They may be applied as enzyme inhibitors , antibacterial agents , antitumour agents or antiviral agents [4]. α -Aminophosphonates can be synthesized via the Kabachnik–Fields reaction [5] by the coupling of a carbonyl, an amine and a dialkyl phosphite unit. We report here the synthesis and crystal structures of four diethyl [(arylamino)(4-ethynylphenyl) methyl] phosphonate derivatives, namely diethyl [(4-bromoanilino) (4-ethynyl-
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9

Yodsomnuk, Panadda, Kanya Junjeam, and Mutsee Termtanun. "Photoactivity of Fe and Zn-doped TiO2 in phenol degradation under visible light." MATEC Web of Conferences 192 (2018): 03047. http://dx.doi.org/10.1051/matecconf/201819203047.

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This study developed bandgap energy of TiO2 into the visible region for the photo-activation. The photocatalytic performance of TiO2 was improved when Fe-doping at 2% and 4% by weight, Zn-doping at 2% and 4% by weight, and doping Fe/Zn 1+1% and 2+2% by weight using flame spray pyrolysis as a synthesis method. Brunauer-Emmett-Teller (BET), ultraviolet-visible spectroscopy (UV-Vis), and x-ray diffraction (XRD) were used to characterize the properties of synthesized and all doped TiO2 photocatalysts. To prove the effectiveness, all the modified TiO2 were also compared with the pure synthesized Ti
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10

Drapak, Iryna, Borys Zimenkovsky, Lina Perekhoda, et al. "Search for angiotensin II receptor antagonists among 4-aryl-n-(aryl)-3-(prop-2-en-1-yl)-2,3-dihydro-1,3-thiazol-2-imine derivatives." Pharmacia 66, no. 4 (2019): 181–86. http://dx.doi.org/10.3897/pharmacia.66.e36808.

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The aim of study was to find potential antihypertensive and cardiotropic drugs among new 4-aryl-N-(aryl)-3-(prop-2-en-1-yl)-2,3-dihydro-1,3-thiazol-2-imines. Materials and methods: The target compounds were synthesized by condensation asymmetrical substituted thioureas with α-bromo-4-R1-acetophenones in ethanol medium. The structure and purity of the compounds synthesized were confirmed by 1H, 13C NMR-spectroscopy and elemental analysis. Docking studies of synthesized compounds to the active site of angiotensin receptor ІІ (PDB ID: 3R8A) were performed in order to find its potential inhibitors
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11

Holík, Miroslav, Zdeněk Friedl, Karel Waisser, and Jiří Gregor. "Multivariate Regression with Substituent Shift Increments. IV. 2-(4-X-Phenyl)-1,3-dihydro-2H-isoindole-1,3-diones and 3-(4-X-Phenyl)-3,4-dihydro-2H-1,3-benzoxazine-2,4-diones." Collection of Czechoslovak Chemical Communications 64, no. 10 (1999): 1709–26. http://dx.doi.org/10.1135/cccc19991709.

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Two series of para disubstituted benzenes were studied: 2-(4-X-phenyl)-1,3-dihydro- 2H-isoindole-1,3-diones (1) and 3-(4-X-phenyl)-3,4-dihydro-2H-1,3-benzoxazine-2,4-diones (2). Their 1H and 13C chemical shifts were correlated with substituent shift increments (SSI) aj and zj, respectively. For 13C chemical shifts, all four zj values, zi, zo, zm, and zp, were used to check the assignment and to find out possible variables for improvement of regression equations. Significant deviations from plain additivity were observed in the case of δH3 and δC3 chemical shifts. This can be explained by chang
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12

Jain, Nimisha, and Pradeep Kumar Singour. "Novel 3-{4-[2-Amino-4-(Substitutedphenyl)-2H-[1, 3] Oxazin/Thiazin-6-Yl} -2-Phenyl-3H-Quinazolin-4-One Derivatives as Enhancer of GABA Mediated Inhibition: Synthesis, Molecular Modeling and Pharmacological Studies." Letters in Drug Design & Discovery 17, no. 2 (2020): 199–213. http://dx.doi.org/10.2174/1570180816666190222155404.

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Background: According to WHO, the 50 million people worldwide are suffering from epilepsy, making it one of the most common neurological diseases globally. Epilepsy is often characterized by neurobiological, cognitive, psychological and behavioral changes and that may enhance the susceptibility to seizures and affect the quality of life. Objective: The aim of the present work was to develop 2, 3 disubstituted 4-(3H)-quinazolinone derivatives in order to find an effective and highly lipophilic compound with lesser side effects and to evaluate them for anticonvulsant and neurotoxic activity. Met
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13

Kishimoto, T., J. F. Kadla, H. m. Chang, and H. Jameel. "The Reactions of Lignin Model Compounds with Hydrogen Peroxide at Low pH." Holzforschung 57, no. 1 (2003): 52–88. http://dx.doi.org/10.1515/hf.2003.008.

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Summary In peroxymonosulfuric acid bleaching, the presence of hydrogen peroxide is dependent on the reaction conditions and the conversion ratios used to generate the peroxy acid. Substantial amounts of hydrogen peroxide may be present in the reaction system under certain conditions. An understanding of the reactions of hydrogen peroxide under these conditions would be beneficial. Therefore, several simple lignin model compounds were reacted with acidic hydrogen peroxide, pH 1-3, at 70°C. In all cases the phenolic lignin model compounds reacted much faster than their non-phenolic counterparts.
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14

Kausar, Samia, Ataf Ali Altaf, Muhammad Hamayun, et al. "i-Propylammonium Lead Chloride Based Perovskite Photocatalysts for Depolymerization of Lignin Under UV Light." Molecules 25, no. 15 (2020): 3520. http://dx.doi.org/10.3390/molecules25153520.

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Lignin depolymerization for the purpose of synthesizing aromatic molecules is a growing focus of research to find alternative energy sources. In current studies, the photocatalytic depolymerization of lignin has been investigated by two new iso-propylamine-based lead chloride perovskite nanomaterials (SK9 and SK10), synthesized by the facile hydrothermal method. Characterization was done by Powder X-Ray Diffraction (PXRD), Scanning Electron Microscopy (SEM), UV-Visible (UV-Vis), Photoluminescence (PL), and Fourier-Transform Infrared (FTIR) Spectroscopy and was used for the photocatalytic depol
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15

Hambley, TW, IA Newsom, and S. Sternhell. "The Structure of (1'RS, 2SR,3RS,4'SR)-2,3-(Cyclohex-2′-en-1′, 4′-ylene)-N-(4″-methyl-phenyl)succinimide." Australian Journal of Chemistry 38, no. 3 (1985): 513. http://dx.doi.org/10.1071/ch9850513.

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A single-crystal X-ray structure determination gave the crystal and molecular parameters of\ (1′RS,2SR,3RS,4′SR)-2,3-(cyclohex-2′-en-1′,4′- ylene )-N-(4′-methylphenyl) succinimide , including the positions of all hydrogen atoms and the conformation of the 4′-methylphenyi group. The latter is possibly controlled by steric interactions between the ortho hydrogen atoms on the 4″-methylphenyl ring and the carbonyl oxygen atoms of the imide moiety. The six atoms of the imide moiety [O(10), C(9), N(8), C(13), O(14) and C(5) on the ORTEP plot in Fig. 1] are planar within 0.04 Ǻ.
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16

Mannan, Sultana Juhara, Refaya Rezwan, Md Shajidur Rahman, and Kohinur Begum. "Isolation and Biochemical Characterization of Lactobacillus species from Yogurt and Cheese samples in Dhaka Metropolitan Area." Bangladesh Pharmaceutical Journal 20, no. 1 (2017): 27–33. http://dx.doi.org/10.3329/bpj.v20i1.32090.

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The purpose of this study was to explore Lactobacillus species from yogurt and cheese that can be used as potential probiotics. In this study, a total of twenty five samples, fifteen from cheese and ten from yogurt were collected from local markets, Dhaka city during May-July, 2016. Single colonies were isolated by enriching in MRS broth and subsequent streaking on MRS agar plate. Total twenty five isolated bacteria were identified as Lactobacillus species by morphological, gram staining and short biochemical tests. All isolated strains were characterized for probiotic properties including aci
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17

Cannon, Kevin C., Alaa Alkurdi, Humayra Himel, et al. "Selective Synthesis of Ortho-Substituted 2-Aryl-3-phenyl-1,3-thiazolidin-4-one Sulfoxides and Sulfones by S-Oxidation with Oxone®." International Journal of Chemistry 9, no. 4 (2017): 87. http://dx.doi.org/10.5539/ijc.v9n4p87.

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S-oxidation of 2-aryl-3-phenyl-1,3-thiazolidin-4-ones with Oxone® was investigated. For all compounds evaluated, selective oxidation to the sulfoxide was realized using 3 equivalents of Oxone® at room temperature. Attempts to selectively prepare the sulfones of ortho-substituted 2-aryl-3-phenyl-1,3-thiazolidin-4-ones at high temperature by increasing the equivalents of Oxone® used were typically unsuccessful. These results contrast significantly with ortho-substituted 2-aryl-3-cyclohexyl-1,3-thiazolidin-4-ones evaluated previously. The extent of this selectivity was affected by the substituent
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18

Boukthir, Mouna, Zribi Fethi, Iman Halloum, Laurent Kremer, and Fakher Chabchoub. "Synthesis and Antitubercular Evaluation of Some Novel 1,2,3,6-tetrahydropyrimidine-5-carbonitrile." JOURNAL OF ADVANCES IN CHEMISTRY 9, no. 3 (2013): 2072–77. http://dx.doi.org/10.24297/jac.v9i3.1014.

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In an attempt to find a new class of antitubercular agents, a series of 1,2,3,6-tetrahydropyrimidine-5-carbonitrile were prepared via the reaction of ethyl N-ethoxycarbonylbenzimidate 2a-b with cyanoacetanilide derivatives 1a-c. These compounds were screened for their antitubercular activity against M. tuberculosis. Several analogues, such as 2,6-dioxo-1-phenyl-4-p-tolyl-1,2,3,6-tetrahydropyrimidine-5-carbonitrile 3a, 1-benzyl-2, 6-dioxo-4-p-tolyl-1,2,3,6-tetrahydropyrimidine-5-carbonitrile 3c and 1-benzyl-2, 6-dioxo-4-phenyl-1,2,3,6-tetrahydropyrimidine-5-carbonitrile 3d exhibited a potent an
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19

Cherkasov, Vasiliy, Yuiy Yurkin, Valeriy Avdonin, and Dmitriy Suntsov. "Self-adhesion X-ray Shielding Composite Material of EPDM Rubber with Barite: Mechanical Properties." Materiale Plastice 57, no. 1 (2020): 28–36. http://dx.doi.org/10.37358/mp.20.1.5309.

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It is actual now to work out new radiation protecting sheeting on the basis of non-curing polymeric composition which possess self-adhesion properties, are easily mounted and dismantled and provide high tightness and low permeability. Mechanical properties of non-curing composites consisting of ethylene propylene diene monomer (EPDM), industrial oil (IO), alkyl phenol-formaldehyde resin (PF) with addition of barite (52 %) to the total material volume were investigated in this article. The aim of investigation is to find optimal content of the above mentioned components at which it would be pos
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20

Yudiyanti, Iqna, and Sabirin Matsjeh. "Aplikasi Edible Coating Pati Kulit Singkong (Manihot utilisima Pohl.) pada Tomat (Solanum Lycopersicum L.) serta Uji Kadar Total Fenol dan Kadar Vitamin C sebagai Sumber Belajar." BIODIK 6, no. 2 (2020): 53–61. http://dx.doi.org/10.22437/bio.v6i2.9260.

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Cassava skin is underutilized by the community, so it becomes waste. Cassava skin contains starch has the potential as an edible coating. Tomatoes are prone to post-harvest damage so that the total phenol and vitamin C content decrease. Therefore, needs to be an alternative to maintain the total phenol and vitamin C contents of tomatoes in a way application of edible coating of cassava skin starch. This study aims to find out the effect of edible coating application of cassava skin starch with concentrations of 1%, 2%, 4%. on total phenol and Vitamin C content of tomatoes on day 3, 6, 12 and t
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21

jain, Nimisha, and Pradeep Kumar Singour. "Novel 3-Substituted-2, 3-Dihydro-2-Thioxoquinazolin-4-(1H)-one derivative as Anticonvulsants: Synthesis, Molecular Docking and Pharmacological Screening." Letters in Drug Design & Discovery 17, no. 6 (2020): 757–71. http://dx.doi.org/10.2174/1570180816666191024090857.

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Background: According to the World Health Organization, 50 million people worldwide are suffering from epilepsy, making it one of the most common neurological diseases globally. 2,3 disubstituted quinazolinone-4-one derivatives endowed with various pharmacological activity, particularly having anticonvulsant action. Objectives: The aim of this study was to synthesize 3-Substituted-2,3-Dihydro-2-thioxoquinazolin- 4-(1H)-one derivative and evaluate for anticonvulsant activity and neurotoxicity in order to find an efficient, compound with lesser side effects. Methods: A novel series of 3-[4-(2-am
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22

Shi, Da-Hua, Xiao-Dong Ma, Yu-Wei Liu, et al. "Synthesis, Crystal Structure and Biological Evaluation of Novel 2-Phenylthiazole Derivatives as Butyrylcholinesterase Inhibitors." Journal of Chemical Research 42, no. 7 (2018): 366–70. http://dx.doi.org/10.3184/174751918x15314837408346.

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To find novel butyrylcholinesterase inhibitors, three novel 2-phenylthiazole derivatives were synthesised. The synthesised compounds were characterised by NMR and single-crystal X-ray diffraction analysis. Hirshfeld surface analysis and two-dimensional fingerprint plots of the compounds were used as a theoretical approach to assess the driving force for crystal structure formation via the intermolecular interactions in the crystal lattices of the synthesised compounds. Among the three compounds, N-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro- 1H-pyrazol-4-yl)-2-(4-methoxyphenyl)thiazole-4-carboxam
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23

Smallheer, J. M., M. J. Otto, C. A. Amaral-Ly, et al. "Synthesis and anti-HIV Activity of a Series of 2-Indolinones and Related Analogues." Antiviral Chemistry and Chemotherapy 4, no. 1 (1993): 27–39. http://dx.doi.org/10.1177/095632029300400104.

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A novel series of 2-indolinones with in vitro anti-HIV (human immunodeficiency virus) activity is described. Two structurally related compounds, 1, 3,3-(4- N-methyl-1,2,5,6-tetrahydropyridylmethyl)-1- phenyl-2-indolinone, and 2, its 4- N-methylpiperidinylmethyl analogue (Fig. 1), formed the basis of a structure-activity study. The synthesis of approximately 50 analogues and their respective activities vs. HIV are presented. Both 1 and 2 were effective inhibitors of HIV(IIIb) in cell protection assays with IC90 values of 4.4 and 14.9μM (2.2 and 7.9μg ml−1), respectively. In the same concentrati
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Adamiec, J., K. Cejpek, J. Rössner, and J. Velíšek. "Novel Strecker degradation products of tyrosine and dihydroxyphenylalanine." Czech Journal of Food Sciences 19, No. 1 (2013): 13–18. http://dx.doi.org/10.17221/6568-cjfs.

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Tyrosine was oxidised with either potassium peroxodisulphate or glyoxal. Volatile reaction products were isolated and analysed by GC/FID and GC/MS, derivatised with diazomethane and analysed by the same methods. Eight reaction products were identified. The major products were the expected Strecker aldehyde (4-hydroxyphenylacetaldehyde) and its lower homologue 4-hydroxybenzaldehyde. They were followed by 1-(4-hydroxyphenyl)-3-propionaldehyde, phenylacetaldehyde, benzaldehyde, phenol, 4-hydroxybenzoic, and benzoic acid. Analogously, the oxidation of 3,4-dihydroxyphenylalanine yielded the corresp
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25

D’Agostino, Rossana, Laura Barberio, MariaCarmela Gatto, Innocenzo Muzzalupo, and Maurizio Mandalà. "Extra Virgin Olive Oil Phenols Dilate the Rat Mesenteric Artery by Activation of BKCa2+ Channels in Smooth Muscle Cells." Molecules 25, no. 11 (2020): 2601. http://dx.doi.org/10.3390/molecules25112601.

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Accumulating evidence has shown the beneficial health effects of extra virgin olive oil (EVOO) consumption in reducing blood pressure and preventing the risk of developing hypertension. Some studies associate the hypotensive activity of EVOO to a minor component—the phenols. This study was designed to investigate the effects of EVOO phenols on the rat resistance mesenteric artery (MA) and to find out the possible vascular pathways involved. The experiments were carried out using a pressurized myograph, which allowed the effects of phenols on isolated MA to be tested under different conditions:
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GLAVCHEVA, ZORNITZA, HIROHITO UMEZAWA, SHUJI OKADA, and HACHIRO NAKANISHI. "NEW TRIMETHYLAMMONIUM DERIVATIVES TOWARD SECOND-ORDER NONLINEAR OPTICS." Journal of Nonlinear Optical Physics & Materials 14, no. 03 (2005): 357–65. http://dx.doi.org/10.1142/s0218863505002797.

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In order to find new ionic compounds with good characteristics for second harmonic generation (SHG), the relationship between first hyperpolarizabilities (β) and the position of the cationic center with respect to the benzene ring was investigated. The β values of a series of trimethylammonium cations: X–C 6 H 4–( CH 2)n N +( CH 3)3, where X = H , CH 3, OCH 3, NH 2, and N ( CH 3)2; n = 0–2, were calculated by using the MOPAC PM3 method. Relatively large calculated β values were obtained when X = N ( CH 3)2 and X = NH 2. Series of [4-(dimethylamino)phenyl]trimethylammonium ( X = N ( CH 3)2; n =
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27

Saini, Minaxi, Dinesh Kumar Mehta, and Rina Das. "Biological Evaluation and Molecular Docking Studies of Synthesized 5-Substituted-2-chlorophenyl-4-chloro Derivatives Bearing Pyridazinone Moiety." Letters in Organic Chemistry 17, no. 3 (2020): 170–83. http://dx.doi.org/10.2174/1570178616666190705152605.

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Chemical modification of pyridazinone may lead to a potent therapeutic agent. In this study, biological properties of pyridazinone derivatives were evaluated by assessing their antimicrobial and in-vitro antioxidant activities. The reaction of a mucochloric acid and 3-chloro-phenylhydrazine hydrochloride led to the formation of 5-aryl-4-chloro-2-(3-chloro-phenyl)-2H-pyridazin-3-one derivatives 2(a-j). The target compounds were synthesized using nucleophilic substitution reaction. In-silico molecular docking studies of the synthesized compounds were carried out with the help of V-Life Science M
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28

Akbal, Tufan, Erbil Agˇar, Sümeyye Gümüş, and Ahmet Erdönmez. "Experimental and DFT studies of Mtpnm." Acta Crystallographica Section A Foundations and Advances 70, a1 (2014): C1694. http://dx.doi.org/10.1107/s2053273314083053.

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Experimental and DFT studies of (Z)-N-[3- Methoxy -5-(trifluormethyl) phenyl]-1-(5- nitrothiophene -2- yl)methanamine Tufan Akbala, , Erbil Agˇarb, Sümeyye Gümüşb and Ahmet Erdönmeza aDepartment of Physics, Ondokuz Mayıs University, Samsun, Turkey . b Department of Chemistry Ondokuz Mayıs University, Samsun, Turkey E-mail: erdonmez@omu.edu.tr The title molecule, C13H12N2O3F3S, is nonplanar with an interplanar angle of 23.94(23)0 between the benzene and thiophene rings. In the crystal there exist only weak intermolecular C–H...O interactions and π...π interactions between the benzene rings and
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Iyappan, Mathivanan, Ezhumalai Dhineshkumar, and Chinnadurai Anbuselvan. "Novel Schiff Base of E-2-(((4-Aminophenyl)imino)methyl)-5-(difluoromethoxy)phenol Fluorescence Chemosensor for Detection of Al3+, Fe2+, Cu2+ Ions and its Application towards Live Cell Imaging." Asian Journal of Chemistry 32, no. 4 (2020): 739–45. http://dx.doi.org/10.14233/ajchem.2020.22394.

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A Schiff base compound E-2-(((4-aminophenyl)imino)methyl)-5-(difluoromethoxy)phenol was synthesized and characterized by FT-IR, 1H and 13C NMR, ESI-mass spectroscopy. The synthesized compound also selectively detects Al3+, Fe2+ and Cu2+ without any interference of other metal ions. Fluorescence titrations carried out to find the selectivity of Al3+, Fe2+ and Cu2+ in turn-on system, with binding modes of 2:1 complex, confirmed by Job′s plot. The presence of metal ions Al3+, Fe2+ and Cu2+ with receptor conformed by ESI-MS spectrum, which changed the base value at 298.00 m/z. Moreover, among the
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30

GOZLEKCI, Sadiye, Ebru KAFKAS, and Sezai ERCISLI. "Volatile Compounds Determined by HS/GC-MS Technique in Peel and Pulp of Fig (Ficus carica L.) Cultivars Grown in Mediterranean Region of Turkey." Notulae Botanicae Horti Agrobotanici Cluj-Napoca 39, no. 2 (2011): 105. http://dx.doi.org/10.15835/nbha3926261.

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Aromatic profile of peels and pulps of four commercial fig cultivars (‘Bursa Siyahi’, ‘Karabakunya’, ‘Sari Lop’ and ‘Sultan Selim’) from Turkey were determined first time by using Headspace Gas Chromatogropy-Mass Spectrophotometer (HS/GC-MS) technigue. In general, aldehydes and therpenes were the major volatile group responsible aroma for peels and pulps in fig fruits. Total aldehydes were higher in pulps than peel in all cultivars. However total therpenes were higher in peel rather than in pulp. Among therpenes, β-caryophyllene were the major volatile compounds found in both
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31

K, Reshma, Baluprakash T, Abdul Kaffoor H, Venkatachalapathi A, and Arumugasamy K. "GC-MS ANALYSIS OF BIO-ACTIVE COMPOUNDS FROM THE ETHANOLIC EXTRACT OF BALIOSPERMUM MONTANUM (WILD.) MUELL. ARG." Kongunadu Research Journal 5, no. 1 (2018): 42–45. http://dx.doi.org/10.26524/krj251.

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Baliospermum montanum (Wild.) Muell. Arg., (Euphorbiaceae) is a well known medicinal plant which is used in treatment of various diseases. The present study was focussed on the separation and investigation of the phytochemical compounds from ethanolic extract by GC-MS technique. The mass spectra of thecompounds found in the extract were matched with the National Institute of Standards and Technology (NIST) library. The ethanolic extract revealed the presence of 30 bioactive compounds. The major and minor phytochemical compounds are 2,15-Dithia[3](9,10)anthracenol[3](2,6)pyridinophane,1,2,3,4-t
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32

Al-Swaidan, Ibrahim A., Adel S. El-Azab, Amer M. Alanazi, and Alaa A. M. Abdel-Aziz. "Synthesis and Conformational Analysis of Sterically Congested (4R)-(−)-1-(2,4,6-Trimethylbenzenesulfonyl)-3-n-butyryl-4-tert-butyl-2-imidazolidinone: X-Ray Crystallography and Semiempirical Calculations." Journal of Chemistry 2014 (2014): 1–15. http://dx.doi.org/10.1155/2014/173902.

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The crystal structure of (4R)-(−)-1-(2,4,6-trimethylbenzenesulfonyl)-3-n-butyryl-4-tert-butyl-2-imidazolidinone(3)was determined by single-crystal X-ray diffraction. Compound3crystallizes in triclinic system in space groupP1 (≠1). The crystal data area=10.62165 Å,b=16.5321 Å,c=8.95729 Å,∝=91.1936∘,β=93.8496∘,γ=88.0974∘,V=1568.22 Å3,Z=3,Dcalc=1.253 g/cm3,μCuKα=15.98 cm−1,F000=636.00,T=20.0°C, andR=0.037. The crystal structure confirmed the occurrence of three molecules of3A,3B, and3Cin which then-butyryl moiety adopted thes-transoidconformation. Crystal structure also revealed that the conforma
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33

Mohamed, Fatma A., A. A. Mousa, R. Farouk, Y. A. Youssef, Y. A. Youssef, and Y. A. Youssef. "Union Dyeing of Wool/Polyester Blend Fabric Using Sulphatoethylsulphone Dye Derivative of C.I. Disperse Yellow 23." Research Journal of Textile and Apparel 19, no. 2 (2015): 26–33. http://dx.doi.org/10.1108/rjta-19-02-2015-b004.

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This paper aims to synthesise, characterise and find out the properties of a model dye for convenient union dyeing of wool, polyester and wool/polyester blend fabric compared with C.I. Disperse Yellow 23. The reactive disperse dye was prepared containing sulphatoethylsulphone (SES) as a reactive group. The dye was synthesised by diazotization and coupling reaction. Firstly, we synthesized azo dye intermediate I using 1-aminobenzene-4-sulphatoethylsulphone diazotized and then coupled it with aniline. The synthesized azo dye intermediate I was diazotized and coupled with phenol to give dye 2. Di
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Purbowati, I. S. M., Karseno Karseno, and A. Maksum. "Acidity level control formulation of roselle tea functional drinks based on variations in the addition of flower petals and sugar type." Food Research 4, no. 3 (2020): 772–79. http://dx.doi.org/10.26656/fr.2017.4(3).343.

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Roselle (Hibiscus sabdariffa) tea was a phenolic acid and anthocyanin enriched-functional drink. The high antioxidant content of roselle tea benefits to prevent degenerative diseases, such as diabetes. The acidity flavor was due to the high content of phenolic compounds and anthocyanins. This led to the addition of low glycemic index sugar. Therefore, it is necessary to understand the formulation between the variation of flower petals and sugar type’s addition. The purpose of this study was to find out the best effect of petal flowers and sugar type addition towards physical, chemical and sens
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35

Zhang, Chuanwei, Kai Li, Zichao Yang, Yuliang Wang, and Haipeng Si. "The Effect of the Aqueous Extract of Bidens Pilosa L. on Androgen Deficiency Dry Eye in Rats." Cellular Physiology and Biochemistry 39, no. 1 (2016): 266–77. http://dx.doi.org/10.1159/000445622.

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Background/Aims: Bidens pilosa L. (Bp) is widely distributed in China and has been widely used as a traditional Chinese medicine. The aim of this study was to examine the effect of the extract of Bp on androgen deficiency dry eye and determine its possible mechanisms. Methods: Twenty-four rats were randomly divided into four groups: Group Con (control), Group Sal (physiological saline), Group Fin (oral finasteride), and Group Bp (oral finasteride and Bp). The dry eye model was established in group Fin and group Bp. Aqueous tear quantity was measured with phenol red-impregnated cotton threads w
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36

Xie, Cheng Ping, Kai Fu Li, Wan Xi Peng, Qi Mei Liu, and Dai Wei Gao. "TD-GC-MS Analysis on Volatile Organic Compounds of Chinese Fir Biomass in Simulated Hot Drying Environment." Materials Science Forum 704-705 (December 2011): 337–42. http://dx.doi.org/10.4028/www.scientific.net/msf.704-705.337.

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a necessary process, there are many volatile organic compounds of Chinese fir biomass during hot drying to pollute environment and affect the health of the people. Therefore, the chemical components from Chinese fir biomass in simulated hot drying environment were identified by TD-GC/MS to find the possible utilization of the resources and reduce environmental pollution. The main constituents at 90°С were cedrol (25.2%), 1,2-benzenedicarboxylic acid, buty l 2-methylpropyl ester (4.62%), 4-imidazolidinone, 5-(phenylmethyl)- 2-thioxo-(3.87%), acetic acid (3.85%), 1-naphthalenepropanol, .alpha.-e
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37

Lin, Geng-Min, Chen-Yu Yeh, Gene-Hsiang Lee, and Shie-Ming Peng. "Modified Phenyl Groups on Pyrazin Groups to Synthesized Cobalt String Complexes." Acta Crystallographica Section A Foundations and Advances 70, a1 (2014): C1011. http://dx.doi.org/10.1107/s2053273314089888.

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In the literature, ligand such as oligo-α-pyridylamines and oligo-naphthyridylamine are usually used in the linear metal string complex. In addition to all of the above, another series of ligand is synthesized by mixing two types of ligands. In other words, the type of ligand contains pyridyl and naphthyridyl groups. Permuting the possible permutation, we can find that symmetrical and the shortest ligand is 2,7-bis(α-pyridylamino)-1,8-naphthyridine (H2bpyany). Complexes contain bpyany2-, hexa-nickel or hexa-cobalt, axial ligands such as chloride and thiocyanate, and anions such as hexafluoroph
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38

Allam, Heba Abdelrasheed, Amr A. Kamel, Mahmoud El-Daly, and Riham F. George. "Synthesis and vasodilator activity of some pyridazin-3(2H)-one based compounds." Future Medicinal Chemistry 12, no. 1 (2020): 37–50. http://dx.doi.org/10.4155/fmc-2019-0160.

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Aim: Hypertension is a major health problem worldwide resulting in high death rates due to its consequences and complications. Therefore, searching for new vasorelaxants is a must to find new vasodilators efficient for the treatment of different cardiovascular diseases. Methodology: Different 6-phenyl-3-pyridazinone based derivatives were synthesized and screened for their vasorelaxant activity according to the reported method using hydralazine as a standard. Results: The tested compounds revealed potent to mild activity with EC50 values 0.339–114.300 μM compared with hydralazine EC50 = 18.210
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39

Bang, EunJin, Sang-Gyun Noh, Sugyeong Ha, et al. "Evaluation of the Novel Synthetic Tyrosinase Inhibitor (Z)-3-(3-bromo-4-hydroxybenzylidene)thiochroman-4-one (MHY1498) In Vitro and In Silico." Molecules 23, no. 12 (2018): 3307. http://dx.doi.org/10.3390/molecules23123307.

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Tyrosinase is a key enzyme in melanin synthesis, catalyzing the initial rate-limiting steps of melanin synthesis. Abnormal and excessive melanin synthesis is the primary cause of serious skin disorders including melasma, senile lentigo, freckles, and age spots. In attempts to find potent and safe tyrosinase inhibitors, we designed and synthesized a novel compound, (Z)-3-(3-bromo-4-hydroxybenzylidene)thiochroman-4-one (MHY1498), and evaluated its tyrosinase inhibitory activity in vitro and in silico. The chemical structures of (Z)-3-benzylidenethiochroman-4-one analogues, including the novel co
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40

Steffen, V., M. Santiago, CP de la Cruz, E. Revilla, A. Machado, and J. Cano. "Effect of intraventricular injection of 1-methyl-4-phenylpyridinium: protection by acetyl-L-carnitine." Human & Experimental Toxicology 14, no. 11 (1995): 865–71. http://dx.doi.org/10.1177/096032719501401102.

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1-methyl-4-phenylpyridinium (MPP+) is the bioactivated product of 1-methyl-4-phenyl- 1, 2, 3, 6-tetrahydropyri dine (MPTP). The neurotoxic action of MPP+ injected intracerebroventricularly (ICV) in the rat has been stud ied, using dopaminergic systems in the substantia nigra, striatum, olfactory bulb, median eminence and hypoph ysis. The following results were obtained: (1) Rats with ICV administration of 1 μl MPP+ solution (62.5 μg of MPP+ rat) showed 50% mortality; (2) The ICV administration of MPP+ produced a decrease in dopamine (DA) concentra tion in different areas of rat CNS studied: st
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41

Derouiche, Lyes, Florian Pierre, Stéphane Doridot, Stéphane Ory, and Dominique Massotte. "Heteromerization of Endogenous Mu and Delta Opioid Receptors Induces Ligand-Selective Co-Targeting to Lysosomes." Molecules 25, no. 19 (2020): 4493. http://dx.doi.org/10.3390/molecules25194493.

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Increasing evidence indicates that native mu and delta opioid receptors can associate to form heteromers in discrete brain neuronal circuits. However, little is known about their signaling and trafficking. Using double-fluorescent knock-in mice, we investigated the impact of neuronal co-expression on the internalization profile of mu and delta opioid receptors in primary hippocampal cultures. We established ligand selective mu–delta co-internalization upon activation by 1-[[4-(acetylamino)phenyl]methyl]-4-(2-phenylethyl)-4-piperidinecarboxylic acid, ethyl ester (CYM51010), [d-Ala2, NMe-Phe4, G
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42

Bertolasi, V., P. Gilli, V. Ferretti, and G. Gilli. "Intermolecular N-H...O Hydrogen Bonding Assisted by Resonance. II. Self Assembly of Hydrogen-Bonded Secondary Enaminones in Supramolecular Catemers." Acta Crystallographica Section B Structural Science 54, no. 1 (1998): 50–65. http://dx.doi.org/10.1107/s0108768197008677.

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The crystal structures of 15 compounds containing the 2-en-3-amino-1-one heterodienic system and forming intermolecular N—H...O hydrogen bonds assisted by resonance (RAHB) are reported: (1) 3-phenylamino-2-cyclohexen-1-one; (2) 3-(4-methoxyphenylamino)-2-cyclohexen-1-one; (3) 3-(4-chlorophenylamino)-2-cyclohexen-1-one; (4) 3-(4-methoxyphenylamino)-2-methyl-2-cyclohexen-1-one; (5) 3-(4-methoxyphenylamino)-5-methyl-2-cyclohexen-1-one; (6) 3-isopropylamino-5,5-dimethyl-2-cyclohexen-1-one; (7) 3-phenylamino-5,5-dimethyl-2-cyclohexen-1-one; (8) 3-(3-methoxyphenylamino)-5,5-dimethyl-2-cyclohexen-1-o
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43

Zampieri, Daniele, Francesca Cateni, Mariarosa Moneghini, et al. "Imidazole and 1,2,4-Triazole-based Derivatives Gifted with Antitubercular Activity: Cytotoxicity and Computational Assessment." Current Topics in Medicinal Chemistry 19, no. 8 (2019): 620–32. http://dx.doi.org/10.2174/1568026619666190227183826.

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Background:Mycobacterium Tuberculosis (Mtb) is the causative pathogen of Tuberculosis (TB) and outbreaks are more common among immunosuppressed persons infected with HIV. The current treatment regimens are lengthy and toxic, yet the therapy has remained unchanged for many decades, so there is a need to find new structures with selective mechanism of action. Moreover, the increased incidence of severe disseminated infections produced by undiagnosed Multidrug-resistant (MDR), worsen clinical treatment and contribute the spread of the disease.Objective:The aim of our study was to evaluate the pot
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44

Abdolmohammad-Zadeh, Hossein, and Elnaz Ebrahimzadeh. "Determination of cobalt in water samples by atomic absorption spectrometry after pre-concentration with a simple ionic liquid-based dispersive liquid-liquid micro-extraction methodology." Open Chemistry 8, no. 3 (2010): 617–25. http://dx.doi.org/10.2478/s11532-010-0030-2.

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AbstractA rapid dispersive liquid-liquid micro-extraction (DLLME) methodology based on the application of 1-hexylpyridinium hexafluorophosphate [C6py][PF6] ionic liquid (IL) as an extractant solvent was applied for the pre-concentration of trace levels of cobalt prior to determination by flame atomic absorption spectrometry (FAAS). 1-Phenyl-3-methyl-4-benzoyl-5-pyrazolone (PMBP) was employed as a chelator forming a Co-PMBP complex to extract cobalt ions from aqueous solution into the fine droplets of [C6py][PF6]. Some effective factors that influence the micro-extraction efficiency include the
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45

Pino, Jorge Antonio, and Clara Elizabeth Quijano. "Study of the volatile compounds from plum (Prunus domestica L. cv. Horvin) and estimation of their contribution to the fruit aroma." Food Science and Technology 32, no. 1 (2012): 76–83. http://dx.doi.org/10.1590/s0101-20612012005000006.

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Simultaneous Distillation-Extraction (SDE) and headspace-solid phase microextraction (HS-SPME) combined with GC-FID and GC-MS were used to analyze volatile compounds from plum (Prunus domestica L. cv. Horvin) and to estimate the most odor-active compounds by application of the Odor Activity Values (OAV). The analyses led to the identification of 148 components, including 58 esters, 23 terpenoids, 14 aldehydes, 11 alcohols, 10 ketones, 9 alkanes, 7 acids, 4 lactones, 3 phenols, and other 9 compounds of different structures. According to the results of SDE-GC-MS, SPME-GC-MS and OAV, ethyl 2-meth
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46

Xu, Hai-Tang, Hua-Zhen Liao, Meng-Jun Zou, et al. "Bioactive Compounds: Antioxidant, Antibacterial and Antiproliferative Activities in Chloranthus henryi." Science of Advanced Materials 12, no. 1 (2020): 144–51. http://dx.doi.org/10.1166/sam.2020.3684.

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This study investigates the antioxidant, antibacterial and antiproliferative properties of the ethyl acetate, chloroform, ethanol and n-butanol extracts from Chloranthus henryi. Total flavonoid content (TFC) and total phenol content (TPC) values for the extracts could be investigated. The TPC value for extracts changed from 4.36 to 19.64 milligram gallic acid equivalents per gram of dry material, and the TFC of extracts changed from 3.13 to 9.99 milligram rutin equivalents per gram of dry material. The antioxidant properties were evaluated and their antimicrobial activity was tested against ba
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47

Kitagawa, Hakuba, Hiroyoshi Ohtsu, and Masaki Kawano. "Kinetic Assembly of a Thermally Stable Porous Coordination Network." Acta Crystallographica Section A Foundations and Advances 70, a1 (2014): C1246. http://dx.doi.org/10.1107/s2053273314087531.

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The advantage of porous coordination network synthesis is designability by changing metal sources and ligands.[1] Therefore, not only many commercially available ligands but also newly synthesized ones were used for networking. On the other hand, most of metal sources are common reagents or stable metal moieties because they can be more predictable as a metal connector. So far, there is no report focusing on usage of labile metal sources for selective network formation. One of the promising methods to produce unique networks with such labile metal sources is kinetic control[2] because labile m
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48

Sitienei, Wilson Lelei, Lodrick Makokha Wangatia, Ting Zeng, Bin Sun, and Mei Fang Zhu. "Synthesis and Solution Self-Assembly Behavior of Porphyrin Tethered by Fullerene C60." Advanced Materials Research 668 (March 2013): 696–700. http://dx.doi.org/10.4028/www.scientific.net/amr.668.696.

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This paper focuses on the synthesis, spectroscopic studies and self-assembly behavior of porphyrin phenyl linked fullerene C60 dyad, which included COOH groups in its fullerene unit so as to promote its adsorption onto TiO2. UV-Vis spectrum and steady-state fluorescence spectrum measurement, showed that the self-assembly of this compound in different solvents with different polarities. The results show that the soret absorption peak slightly blue shifted by 5 nm in acetonitrile and 2 nm in tetrahydrofuran, while the soret peaks in toluene solution was the same as in chloroform. Increasing conc
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49

Kim, Hye-Ran, Hwan-Young Kim, Trang Nguyen Thi Dai, et al. "Development Of Novel Alkylating Chemotherapeutics, Phenyl-Chloroethyl Urea Family, Targeting Mitochondrial Prohibitin For Selective Killing Of Leukemic Cells." Blood 122, no. 21 (2013): 1325. http://dx.doi.org/10.1182/blood.v122.21.1325.1325.

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Abstract Background Mitochondrial aberrations have been associated with chronic degenerative diseases, aging and cancer. Mitochondrial proteins are interesting targets for the development of selective anticancer drugs in leukemia and other malignancies. We analyzed mitochondrial proteins to develop novel anti-cancer agents targeting selective leukemic cell, especially acute myelocytic leukemia (AML) cells. Materials and Methods Mitochondria were isolated from primary AML cells and AML cell lines (THP-1 and KG-1) by density-gradient ultracentrifugation using swelling buffer and sucrose buffer.
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50

Khabiyev, A. T., and B. S. Selenova. "Palladium(II)-catalyzed Suzuki–Miyaura Reactions of Arylboronic Acid with Aryl Halide in the Presence of Aryl-Ferrocenyl-Phosphines." Eurasian Chemico-Technological Journal 16, no. 1 (2013): 79. http://dx.doi.org/10.18321/ectj172.

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<p>This study examined investigation of catalytic activity of aryl-ferrocenyl-phosphine (2-methoxyphenyl diferrocenyl phosphine (cat. 1), 2-tert-butyloxyphenyl diferrocenyl phosphine (cat. 2), 2-methoxynaphtyl diferrocenyl phosphine (cat. 3), 1,1’-bis(diphenylphosphino) ferrocene (cat. 4), phenyl diferrocenyl phosphine (cat. 5)) ligands with palladium salts as precursors in Suzuki–Miyaura reaction. Suzuki–Miyaura reaction is one of the important cross-coupling reactions and extremely powerful in forming C–C bonds. Aryl-ferrocenyl-phosphine ligands confer unprecedented activity for these
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