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Приказ резултата 61-70 од 72
Oak acorn, polyphenols and antioxidant activity in functional food
(Elsevier Sci Ltd, Oxford, 2006)
In this paper, are presented the results of physical and chemical investigations of differently treated samples of oak acorn. The aim of this investigation is to estimate the influence of thermal treatment on physical and ...
Influence of Coal Ash and Slag Dumping on the Quality of Dump Waste Waters of the Kostolac Power Plants (Serbia)
(Taylor & Francis Group LLC, 2006)
The content of selected trace and major elements in the river water used for transport,
as well as in the subcategories of the waste waters (overflow and drainage)
were analyzed in order to establish the influence of ...
Transition metal complexes with thiosemicarbazide-based ligands. LIII. [4-(2-diphenylphosphino-alpha-ethoxybenzyl-kappa P)-S-methyl-1-(4-oxidopent-3-en-4-ylidene-kappa O)-thiosemicarbazido-kappa(2) N-1, N-4]nickel (II)
(Int Union Crystallography, Chester, 2006)
The title compound, [Ni(C28H30N3O2PS)], crystallizes with two independent molecules in the asymmetric unit. The Ni-II atoms are in significantly deformed square-planar environments formed by an ONNP donor set from a ...
Electron delocalization mediates the metal-dependent capacity for CH/pi interactions of acetylacetonato chelates
(Amer Chemical Soc, Washington, 2006)
CH/pi interactions between the coordinated acetylacetonato ligand and phenyl rings were analyzed in the crystal structures from the Cambridge Structural Database and by quantum chemical calculations. The acetylacetonato ...
CH/pi interactions of pi-system of acetylacetonato chelate ring: Comparison of CH/pi interactions of Ni(II)-acetylacetonato chelate and benzene rings
(Elsevier Science Sa, Lausanne, 2006)
The calculations have been done for CH/pi interaction with pi-system of Ni(II)-acetylacetonato chelate ring. The results show that there is an attractive electrostatic interaction, while dispersion component is a major ...
Ring closing metathesis/fragmentation route to (Z)-configured medium ring cycloalkenes. Total synthesis of (+/-)-periplanone C
(Amer Chemical Soc, Washington, 2006)
The combination of ring closing metathesis and beta-fragmentation offers an efficient entry into (Z)-configured medium ring cycloalkenes. The fragmentation step can be effected under anionic or radical conditions. The ...
Reactions of alpha-4(20)-epoxy-5-O-mesyltriacetyltaxicine I induced by BF3 center dot Et2O/Bu4NBr
(Serbian Chemical Soc, Belgrade, 2006)
The reaction of alpha-4(20)-epoxy-5-O-mesyltriacetyltaxicin I (2) with (BF3Et2O)-Et-./Bu4NBr can give rise to 4 different products. Each of these products can be obtained selectively, under the appropriate reaction conditions.
Synthesis, biology, and modeling of a C-4 carbonyl C,D-seco-taxoid
(Pergamon-Elsevier Science Ltd, Oxford, 2006)
A C,D-seco-paclitaxel derivative 26 was prepared from taxine and tested for biological activity. Chemical reactivity of the seco-compounds proved to be substantially modified, with respects to taxoids. The corresponding ...
Orientations of axially coordinated imidazoles and pyridines in crystal structures of model systems of cytochromes
(Elsevier Science Inc, New York, 2006)
Many properties of cytochromes and model systems depend on orientations of axial ligands. In this work, we elucidated the role of porphyrin substituents on orientation of axial ligands in model systems of cytochromes. The ...
Comparative examination of the essential oils of Anthemis ruthenica and A-arvensis wild-growing in Serbia
(John Wiley & Sons Ltd, Chichester, 2006)
The essential oils from the aerial parts of Anthemis ruthenica and Anthemis arvensis, wild-growing in Serbia, obtained by hydrodistillation were analyzed using GC and GC/MS. A total of 75 and 81 components were identified ...