نتایج جستجو برای: phenacyl derivatives

تعداد نتایج: 105025  

2005
Fadi Dornaika Angel Domingo Sappa

Traditionally, the Structure From Motion (SFM) problem has been solved using feature correspondences. This approach requires reliably detected and tracked features between images taken from widespread locations. In this paper, we present a new paradigm to the SFM problem for planar scenes. The novelty of the paradigm lies in the fact that instead of image feature correspondences, only image der...

Journal: :Molecules 2016
Dongmei Yang Hui Wang Haijian Yuan Shujun Li

Cinnamaldehyde, of the genius Cinnamomum, is a major constituent of the bark of the cinnamon tree and possesses broad-spectrum antimicrobial activity. In this study, we used best multiple linear regression (BMLR) to develop quantitative structure activity relationship (QSAR) models for cinnamaldehyde derivatives against wood-decaying fungi Trametes versicolor and Gloeophyllun trabeum. Based on ...

2011
Sylvie Chambon Alain Crouzil

In the context of dense stereo matching of pixels, we study the combination of different correlation measures. Considering the previous work about correlation measures, we use some measures that are the most significant in five kinds of measures based on: cross-correlation, classic statistics, image derivatives, nonparametric statistics and robust statistics. More precisely, this study validate...

2015
Juan J Torres-Vega Alejandro Vásquez-Espinal Lina Ruiz María A Fernández-Herrera Luis Alvarez-Thon Gabriel Merino William Tiznado

The electron delocalization of benzene (C6H6) and hexafluorobenzene (C6F6) was analyzed in terms of the induced magnetic field, nucleus-independent chemical shift (NICS), and ring current strength (RCS). The computed out-of-plane component of the induced magnetic field at a distance (r) greater than or equal to 1.0 Å above the ring center correlates well (R (2)>0.99) with the RCS value. Accordi...

Journal: :Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan 2004
Tatsushi Imahori

A novel type of deprotonative functionalization of aromatics was accomplished with a phosphazene base (t-Bu-P4 base). For various nitrogen heteroaromatics and benzene derivatives, deprotonative 1,2-additions proceeded with the t-Bu-P4 base and ZnI(2) as an additive in the presence of carbonyl compounds. The t-Bu-P4 base has both extremely strong Brønsted basicity and less nucleophilicity due to...

2000
Yoon-Chang Kim Satoshi Sasaki Kazuyoshi Yano Kazunori Ikebukuro Kazuhito Hashimoto Isao Karube

The oxidation behavior of twenty organic chemicals from four different classes (sugars, benzene derivatives, alcohols and carboxyl acids) were investigated using the official chemical oxygen demand (COD) methods (i.e., permanganate and dichromate methods) and their oxidation levels compared with the theoretical oxygen demand (ThOD) values. In addition, the correlation between the official COD a...

Journal: :Physical chemistry chemical physics : PCCP 2015
Pan-Pan Zhou Rui-Qin Zhang

A series of benzene derivatives with different substituents adsorbed on graphene was investigated using a density-functional tight-binding method with a dispersion correction. Compared to benzene, the derivative with either an electron-withdrawing or -donating substituent exhibits stronger physisorption. Moreover, the steric size of the substituent is important in determining the adsorption str...

Journal: :iranian journal of pharmaceutical research 0
kamaleddin haj mohammad ebrahim tehrani department of medicinal chemistry, school of pharmacy, shahid beheshti university of medical sciences, tehran p.o. box 14155–6153, iran. vida mashayekhi department of medicinal chemistry, school of pharmacy, shahid beheshti university of medical sciences, tehran p.o. box 14155–6153, iran. parisa azerang drug design and bioinformatics unit, department of medical biotechnology, biotechnology research center, pasteur institute; tehran 13164, iran. somayeh minaei department of medicinal chemistry, school of pharmacy, shahid beheshti university of medical sciences, tehran p.o. box 14155–6153, iran. soroush sardari drug design and bioinformatics unit, department of medical biotechnology, biotechnology research center, pasteur institute; tehran 13164, iran. farzad kobarfard department of medicinal chemistry, school of pharmacy, shahid beheshti university of medical sciences, tehran, iran

a series of cyclic analogues of bioactive thiosemicarbazide derivatives have been synthesized as potential antimycobacterial agents. the 4-amino-1,2,4-triazole-5-thione analogues (ia-f) were prepared by heating a mixture of thiocarbohydrzide and appropriate carboxylic acids. reaction of thiocarbohydrazide with γ-ketoesters in the presence of sodium methoxide furnished triazolopyridazine derivat...

Journal: :The Biochemical journal 1990
D P Abriola A D MacKerell R Pietruszko

Bromoacetophenone (2-bromo-1-phenylethanone) has been characterized as an affinity reagent for human aldehyde dehydrogenase (EC 1.2.1.3) [MacKerell, MacWright & Pietruszko (1986) Biochemistry 25, 5182-5189], and has been shown to react specifically with the Glu-268 residue [Abriola, Fields, Stein, MacKerell & Pietruszko (1987) Biochemistry 26, 5679-5684] with an apparent inactivation stoichiome...

2012
Poonam Yadav Nalini V Purohit

In an attempt to find a new class of antimicrobial agents, a series of oxygen heterocyclic isocoumarins, dihydroisocoumarins, aromatic / aliphatic amino methyl isocoumarin derivatives having benzoyl group at 3 position in isocoumarin moiety was synthesized using simple appropriate starting material o-acyl benzoic acid and bromoacetophenone derivatives in presence of anhy. K2CO3 in ethyl methyl ...

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