Triazeno
Mostrando 13-22 de 22 artigos, teses e dissertações.
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13. SÍNTESE E CRISTALOQUÍMICA DE COMPLEXOS DE Hg(II) E Ni(II) COM O LIGANTE 3-(2-FLUOROFENIL)-1-(4-ACETILFENIL)TRIAZENIDO E ATIVIDADE BIOLÓGICA DE TRIAZENOS LIVRES / SYNTHESIS AND CRYSTALCHEMISTRY OF Hg(II) AND Ni(II) COMPLEXES WITH 3-(2-FLUOROPHENIL)-1-(4-ACETILPHENIL)TRIAZENIDE LIGAND AND BIOLOGICAL ACTIVITY OF FREE TRIAZENES
Sintetizou-se o ligante 1-(2-fluorfenil)-3-(4-acetilfenil)triazeno (1) e a partir deste os complexos [HgII(C14H11N3OF)2] (5) e cis-NiII(C14H11N3OF)2(py)2 (6), com o propósito de observar a geometria de coordenação, interações intermoleculares e o arranjo cristalino destes compostos. Sintetizou-se também os ligantes 1-(fenil)-3-(4-acetilfenil)triazeno (
Publicado em: 2006
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14. SÍNTESE E CRISTALOQUÍMICA DE COMPLEXOS DE MERCÚRIO(II) COM O LIGANTE 1-(3-TRIFLUOROMETILFENIL)-3-(3-NITROFENIL)TRIAZENO / SYNTHESIS AND CRYSTALLOCHEMISTRY OF MERCURY(II) COMPLEXES WITH LIGAND 1-(3-TRIFLUOROMETHYLPHENIL)-3- (3-NITROPHENIL)TRIAZENE
Este trabalho apresenta a determinação da estrutura cristalina/molecular de dois complexos de mercúrio(II) com um mesmo ligante triazeno monocatenado previamente desprotonado. A reação entre acetato de mercúrio(II) e o ligante 1-(3-nitrofenil)-3-(3-trifluorometilfenil)triazeno e trifenilfosfina em metanol forma o complexo Hg(CF3C6H4NNNC6H4NO2)2(C18H15P
Publicado em: 2005
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15. SÍNTESE, ESTRUTURAS DE TRIAZENO 1-ÓXIDO E COMPLEXO DE K+, E AVALIAÇÃO DA ATIVIDADE BIOLÓGICA DE 1-METILTRIAZENOS 1-ÓXIDO E 1,3-BIS(ARIL)TRIAZENOS / SYNTHESIS, STRUCTURE OF TRIAZENE 1-OXIDE AND COMPLEX OF K+, AND EVALUTION OF BIOLOGICAL ACTIVITY OF 1-METILTRIAZENES 1-OXIDE AND 1,3-BIS(ARIL)TRIAZENES
This work is associated with the crystal and molecular structure analysis of two free triazene 1-oxide molecules and a complex with K+ involving a p-carboxyfenil-substituted single protonated triazene 1-oxide ligand. 1-metil-3-(p-carboxyphenyl)triazene 1-oxide (1) crystallizes in the monoclinic system, space group C2/c, with cell parameters a = 27.2046(8) Å
Publicado em: 2005
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16. Espectroscopia vibracional, Raman ressonante e eletrônica de nitroderivados em sistemas conjugados / Vibrational, resonance Raman and electronic spectroscopies of nitroderivatives in conjugated systems
No presente trabalho foram investigados vários sistemas moleculares contemplando um ou mais grupos NO2 com características fortemente elétron atraentes, e por outro lado um grupo fortemente elétron doador (NH2, OH ou N3H) conectados através de um anel benzênico ou piridínico. A caracterização das propriedades de transferência de carga intramolecula
Publicado em: 2005
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17. Synthesis, properties and evaluations of intermolecular interactions in the solid state of triazenes and complexes with cadmium (II) / Síntese, propriedades e avaliações de interações intermoleculares no estado sólido de triazenos e complexos com cádmio(II)
Este trabalho apresenta a determinação da estrutura cristalina/molecular de três complexos de cádmio(II) com ligantes triazenos monocatenados previamente desprotonados e as estruturas cristalinas/moleculares de dois compostos triazenos livres. O complexo Cd[FC6H4NNNC6H4F]2(C5H5N)2 (1) cristaliza no sistema ortorrômbico, grupo espacial Iba2 com parâmetr
Publicado em: 2004
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18. Broad-Spectrum Antimicrobial Activity of a New Triazenoimidazole
Methyl-5(or 4)-(3,3-dimethyl-1-triazeno)-imidazole-4(or 5)-carboxylate was shown to have in vitro antimicrobial activity against gram-positive and gram-negative bacteria, yeasts, filamentous fungi, and algae. Preliminary studies with mice, experimentally infected with Staphylococcus aureus, have shown that this new antimicrobial agent has in vivo chemotherap
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19. IMMUNOLOGICAL ALTERNATION OF LEUKEMIC CELLS In Vivo AFTER TREATMENT WITH AN ANTITUMOR DRUG*
L1210 leukemia was transplanted serially in CDF1 mice treated with 5-(3,3-dimethyl-1-triazeno)imidazole-4-carboxamide (DIC, NSC 45388). After four different lines (C lines) had been treated for several generations, a marked increase in survival time of untreated mice was observed. In contrast, mice treated with DIC or immunosuppressed with cyclophosphamide s
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20. Potentiation of the Toxicity of Mithramycin by Bacterial Lipopolysaccharide
The lethality for BALB/c mice of 1,3-bis(2-chloroethyl)-1-nitrosourea, cytosine arabinoside, 1-(2-chloroethyl)-3-cyclohexyl-1-nitrosourea, hydroxyurea, mithramycin, a polymyxin-like antibiotic (SQ 21,286), polyadenylic polyuridylic acid, procarbazine, 5-[3,3-bis(2-chloroethyl)-1-triazeno]-imidazole-4-carboxamide (TIC-mustard) or uracil arabinoside administer
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21. Sodium ascorbate potentiates the growth inhibitory effect of certain agents on neuroblastoma cells in culture.
Mouse neuroblastoma (NB) cells in culture were more sensitive to sodium L-ascorbate than were rat glioma cells by the criterion of growth inhibition (due to cell death and reduction in cell division). Sodium L-ascorbate at nonlethal concentrations potentiated the effect of 5-fluorouracil (FUra), x-irradiation, bleomycin, RO20-1724, prostaglandin E1, and sodi
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22. Effect of chemotherapy and immunotherapy on tumor-specific immunity in melanoma.
The effects of chemotherapy, with nitrosoureas or dimethyl-triazeno-imidazole-carboxamide (DTIC), or immunotherapy with Bacillus Calmette-Guérin (BCG), on cell-mediated immunity (CMI), and serum blocking factor (BF) to melanoma cells were studied in 23 patients. Studies were performed with autologous or allogenic melanoma target cells obtained from recent b