Browsing by Title Artículos de revistas
Now showing items 2468-2487 of 2801
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(Royal Soc Chemistry, 2017)The simple reaction of chitosan with metallic salts yields (chitosan) (MLn)(x), MLn = MnCl2, CoCl2, NiCl2, macromolecular complexes which, after a thermal treatment at 800 degrees C under air, give nanostructured Mn2O3, ...
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(Royal Society of Chemistry, 1998)The UV irradiation of [Re(η5-C5Me5)(CO)3] in the presence of C6F6 effected intermolecular C-F and intramolecular C-H activation generating [Re(η6-C5Me4CH2)(CO) 2(C6F5)] 1a in two isomeric forms. In the major isomer the CH2 ...
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(Elsevier, 2022)American trypanosomiasis or Chagas disease is caused by the protozoan parasite Trypanosoma cruzi, and is considered a neglected disease, being an important problem for public health. Benznidazole (BZN) is the drug used to ...
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(SPRINGER/PLENUM PUBLISHERS, 2006-10)5,6-Dimethoxy-2,3-dihydro-7H-dibenzo[de,h] quinolin-7-one has been synthesized by cyclization of phenylethylaminophtalides with polyphosphoric acid and characterized by X-ray diffraction and NMR assignments. A theoretical ...
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(SPRINGER/PLENUM PUBLISHERS, 2006-10)5,6-Dimethoxy-2,3-dihydro-7H-dibenzo[de,h] quinolin-7-one has been synthesized by cyclization of phenylethylaminophtalides with polyphosphoric acid and characterized by X-ray diffraction and NMR assignments. A theoretical ...
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(2005)The new oxoisoaporphines 7H-dibenzo[de,h]quinolin-7-one, 5-methoxy-7H-dibenzo[de,h]quinolin-7-one, 5-methoxy-6-hydroxy-7H-dibenzo[de,h] quinolin-7-one, 5-hydroxy-7H-dibenzo[de,h]quinolin-7-one and 5-methoxy-6H-dibenzo[de ...
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(Elsevier, 2018-06)We report the synthesis, characterization and thermoelectric properties of lead-free AgSnmSbSe2Tem (m = 2 and 10) systems. Powder X-ray diffraction patterns and Rietveld refinement results were consistent with phases ...
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Synthesis and unusual swelling behavior of combined cationic/non-ionic hydrogels based on chitosan (WILEY-V C H VERLAG GMBH, 2003-10-15)Hydrogel-forming copolymers based on chitosan grafted with different amounts of polyacrylamide were synthesized and its swelling capacity determined in distilled water, sodium chloride solutions, as well as in buffer ...
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(Desalination Publ, 2017)A nanoadsorbent based on delta-MnO2 and Fe3O4 was synthesized and assessed as an adsorbent for removing some heavy metals from acidic aqueous solution. The delta-MnO2 adsorbent was prepared in aqueous alkaline medium using ...
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(MARCEL DEKKER INC, 2000)The synthesis of 6-hydroxy-7-nitro-1-benzazepine-2-one 7 from 5-hydroxy-1 -tetralone 1 and 6-hydroxy-1 -benzazepine-2-one 2 is described. Bromination of 6-hydroxy- 1-benzazepine-2-one 2 with NBS in ethyl acetate afforded ...
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(2011)The synthesis of a series of functionalized 1-Benzyl-3-[4-Aryl-1-piperazingl]carbonyl-1H-Indoles 6(a-f), as a potential new class of bioactive ligands at D4 receptors is reported. The synthetic strategy took place through ...
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(ELSEVIER SCIENCE SA, 2004-12-01)Three lipid-soluble furan derivatives, 2,5-disubstituted with different n-alkyl chains, and a terminal trimethylammonium group were obtained by reaction of a metalated monoalkylfuran with alkyl dihalides under conditions ...
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(2004)Three lipid-soluble furan derivatives, 2,5-disubstituted with different n-alkyl chains, and a terminal trimethylammonium group were obtained by reaction of a metalated monoalkylfuran with alkyl dihalides under conditions ...
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(TAYLOR & FRANCIS INC, 2007)A novel series of 2-benzothienyl carbonyl arylpiperazines (6a-f) was synthesized as potential HIV nonnucleoside reverse transcriptase inhibitors (NNRTIs). Preparation of the derivatives was performed by reacting benzo[b]thiophene ...
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(MARCEL DEKKER INC, 1992)The synthesis of pyranoquinone 6 and its application to the elaboration of pyranonaphthoquinone 1b is described.
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(AMER CHEMICAL SOC, 2003-12-12)3-Amino-delta-valerolactams trans-11a-c were synthesized through conjugate addition and Curtius rearrangement and converted into Fmoc-{Trp-Gly}, Fmoc-{Ile-Gly}, and Fmoc-{Phe-Gly} pseudo-dipeptides. Conformational analyses ...
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(HETERO CORPORATION, 1998-05)Reaction of 5-amino-3-methyl-1-phenylpyrazole (1a) and 5-amino-3-(4-chlorophenyl)-1H-pyrazole (1b) with dimedone (2) and p-susbstituted benzaldehydes 3 in ethanol, afforded in all cases tricyclic linear 4-aryl- ...
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(MARCEL DEKKER INC, 2004-07)We report here the synthesis of substituted 4-chloro-N-[3-oxo-3-(4-aryl-1-piperazinyl)-propyl] benzamides (5-9), as potential new antidepressants, incorporating in a single molecule structural moieties related to a dual ...
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(2010)The synthesis of a series of substituted arylpiperazines linked to a 2-(pyridin-3-yl)-1H-benzo[d]imidazole scaffold through an alkylic linker is reported. The novel 1-(2-(4-arylpiperazin-1-yl)alkyl)-2-(pyridin-3-yl)-1H-b ...