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Influence of depyritization on NMR relaxation parameters of Aleksinac oil shale kerogen
(Elsevier Sci Ltd, Oxford, 1998)
Parallel proton and cross-polarization/magic-angle spinning (CP/MAS) nuclear magnetic resonance (NMR) relaxation measurements are reported on Aleksinac oil shale kerogen concentrate and pyrite-free kerogen concentrate. ...
The preparation of an isoxazole derivative of 4-hydroxycoumarin
(Serbian Chemical Soc, Belgrade, 1998)
A method for preparation of an isoxazole derivative of 4-hydroxycoumarin, 3-phenyl-5-(4-hydroxy-3-coumarinyl)-isoxazole has been described. The reaction sequence includes addition of bromine to 3-cinnamoyl-4-hydroxycoumarin, ...
Sesquiterpene lactones from Centaurea species: C-derventana and C-kosaninii
(Georg Thieme Verlag, Stuttgart, 1998)
Theoretical studies of inorganic and organometallic reaction mechanisms. 14. beta-hydrogen transfer and alkene/alkyne insertion at a cationic iridium center
(Amer Chemical Soc, Washington, 1998)
Recent experimental work shows that alkanes can be activated by Cp*Ir(PMe3)(CH3)(+) at room temperature to generate olefin complexes. The reaction begins with alkane activation by oxidative addition (OA) followed by reductive ...
An efficient semisynthesis of 7-deoxypaclitaxel from taxine
(Royal Soc Chemistry, Cambridge, 1998)
Highly cytotoxic 7-deoxypaclitaxel analogues are obtained by a semisynthesis starting from taxine-the most abundant naturally occurring taxane diterpene fraction.
Protection of broiler breeders by an inactivated combined water-in-oil-in-water viral vaccine
(Akademiai Kiado, Budapest, 1998)
A four-component vaccine, prepared by combining the single vaccines, contains subunits of Newcastle disease and infectious bronchitis viruses, as well as whole inactivated infectious bursal disease and egg drop syndrome ...
Synthesis and characterization of uns-cis-(ethylenediamine-N,N '-di-3-propionato)cobalt(III) complexes with symmetrical beta-diketonato ligands
(Serbian Chemical Soc, Belgrade, 1998)
Some uns-cis-(ethylendiamine-N,N'-di-3-propionato)cobalt(III) complexes with symmetrical beta-diketonato ligands, 2,4-pentanedione, 1,3-diphenyl-1,3-propanedione and 2,2,6,6-tetramethyl-3,5-heptanedione, have been prepared ...
Temperature influence on the composition of Ni-ferrite powders obtained from complex compounds with acetylacetonato-ligands
(Transtec Publications Ltd, Zurich-Uetikon, 1998)
The conditions for the synthesis of ultra fine Ni-ferrites powder were investigated. The basic components were Fe(III) and Ni(II) complex compounds with acetylacetonato- (2,4 pentadione) ligands. Nanometrics powders were ...
Copper(II) complexes of usnic acid condensation products and their antibacterial activities
(Marcel Dekker Inc, New York, 1998)
The complexes of Cu(II) and condensation products of usnic acid with the acyl hydrazides of alpha-naphthoic, caprylic and oxamic acid, as well as the-derivative of usnic acid with thiosemicarbazide have been synthesized ...
Sesquiterpene lactones from plant species Centaurea solstitialis L.
(Serbian Chemical Soc, Belgrade, 1998)
The identification of nine known guaianolides, i.e., solstitialin A, its 13-acetate, linichlorin B, cynaropicrin, centaurepensin (chlorohyssopifolin A), 17-epi-centaurepensin, 19-desoxychlorojanerin, 11 beta,13-dihydrode ...