نتایج جستجو برای: acetyl acetone bis thiosemicarbazonate

تعداد نتایج: 82813  

Journal: :Acta Crystallographica Section E Structure Reports Online 2008

Journal: :Jurnal Teknologi & Industri Hasil Pertanian (edisi elektronik) 2021

Cinnamon is a type of plant that contains bioactive components and useful as functional food used in the prevention diabetes mellitus. The aim this study was to identify content aquadest extract cinnamon (Cinnamomum burmanii B.) using GC-MS. results GC-MS analysis showed there were eight different compounds contained extract, namely cinnamaldehyde, coumarin, ethalic acid, phthalazinone, acetyl ...

2016
Seyhan Oran Saliha Sahin Pinar Sahinturk Sule Ozturk Cevdet Demir

In this study, antioxidant and antimicrobial potentials of Usnea intermedia, U. filipendula, and U. fulvoreagens and their stictic and usnic acid contents were investigated. Antioxidant activity and total phenolic contents were evaluated in acetone, ethanol, and methanol extracts of these three species. Antioxidant activity was measured by ABTS [2,2'-azino-bis(3-ethylbenzothiazoline-6-sulphonic...

2010
Yang Li Wentao Gao

A simple and efficient synthesis of novel 3-(quinolin-2-yl)- and 3,6-bis(quinolin-2-yl)-9H-carbazoles, utilizing sodium ethoxide as a catalyst via a Friedländer condensation reaction between 3-acetyl-9-ethyl-9H-carbazole or 3,6-diacetyl-9-ethyl-9H-carbazole and β-aminoaldehydes or β-aminoketones is described. All of the title compounds were obtained in good yields of 52-72% and their structures...

2014
Prasenjit Mondal Shyamtanu Chattoraj Rajdeep Chowdhury Debmalya Bhunia Surajit Ghosh Kankan Bhattacharyya

1.1 Materials: Diamino-polyethylene glycol with MW 2000 Da (PEG2000) was purchased from Rapp Polymer. (3-Glycidoxypropyl)trimethoxysilane (GOPTS) was purchased from Fluka. EZ-Link NHSBiotin was purchased from Thermo Scientific. Hydrogen peroxide (30% solution), Acetone, Dichloromethane and N, N-Dimethylformamide were purchased from Merck. Imidazole and 2-[4-(2hydroxyethyl) piperazin-1-yl]ethane...

Journal: :Environmental Health Perspectives 1994
S Scheer T Steinbrecher G Boche

A selective synthesis of N2-deoxyguanosine adducts derived from 4-aminobiphenyl (ABP) is described. The reactions of O2-trifluoromethylsulfonyl-O6-allyl-3',5'-O-bis(tert-butyldimethyl silyl)-2'- deoxyxanthosine with 3-amino-4-acetaminobiphenyl and 4-hydrazinobiphenyl, respectively, are the key steps. Successive removal of the protecting groups from the protected adducts leads to the free adduct...

2008
David J. Fox Daniel Sejer Pedersen Stuart Warren

The title compound, C(27)H(30)O(6), was prepared by monodihydroxy-lation of the bis-olefin (E,E)-tert-butyl 2-acetyl-2-cinnamyl-5-phenyl-pent-4-enoate using standard Sharpless asymmetric dihydroxy-lation conditions, followed by treatment with 1,1'-carbonyl diimidazole. In the crystal structure, the phenyl rings form an intra-molecular edge-to-face C-H⋯π contact with an inter-planar angle of 56....

Journal: :The Journal of antibiotics 1966
S Umezawa S Koto

Paromamine1>2) is a common and antibacterial moiety of paromomycin I and II, and kanamycin C, and was recently isolated3) from a crude kanamycin-complex. The synthesis4) had already been achieved in our laboratory through the condensation of bis-N,N/-(2,4-dinitrophenyl)-2-deoxystreptamine with 3,4,6-tri-O-acetyl-2-deoxy-2-(2,4dinitroanilino)-^-D-glucopyranosyl bromide. This paper describes an i...

Journal: :Fitoterapia 2009
Yu Mei Zhang Ning Hua Tan Guang Zhi Zeng Abiodun Humphrey Adebayo Chang Jiu Ji

A new norlignan, (2R,3R,4S,5S)-2,4-bis(4-hydroxyphenyl)-3,5-dihydroxy-tetrahydropyran (1), together with 9 known compounds were isolated from the branches and leaves of Taxodium ascendens. Their structures were mainly determined on the basis of MS, IR, 1D and 2D NMR spectral evidences. Methanol extract showed inhibitory activity on carbonic anhydrase II with an IC(50) value of 4.27 microg/ml, a...

2008
Wen-Juan Shi

In the crystal structure of the title compound, [Cu(3)Br(3)(C(26)H(24)P(2))(3)]·0.5CH(3)COCH(3), two of the Cu centers are bridged by two bromide anions forming a Cu(μ-Br)(2)Cu core, which is further bridged by a 1,2-bis-(diphenyl-phosphino)-ethane (dppe) ligand. The third Cu center is terminally bound to another bromide ligand and is connected to the other two Cu atoms by bridging dppe ligands...

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