• Title/Summary/Keyword: syntheses

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Synthesis of Some new 2-Azolyl-and Azinylthiopyrimidines

  • Sherif, Laila-Abrahim;Sherif, Sherif-M.;Rasha-A.M. Faty;Fattah, Abdel-Samei-M. Abdel
    • Archives of Pharmacal Research
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    • v.18 no.1
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    • pp.51-55
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    • 1995

  • A facile convenient syntheses of the titled compounds, via reacting the precusor 2-amino-2-(pentane-2, 4-dion-3-yithio)-6-phenylpyrimidine-5-carbonitrile (1) with nitrogen nucleophiles and with the carbanions of some active methylene compounds, is reported. Chemical and spectroscopic evidence of the newly syntheised compounds are described.

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Synthesis and Characterization of a Novel TTF Derivative

  • Wang, Lei;Lee, Myong-Hoon
    • 한국정보디스플레이학회:학술대회논문집
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    • 2007.08a
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    • pp.890-892
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    • 2007

  • We report the syntheses and characterizations of a novel TTF derivative. To extend the mesogenic core, alkoxy naphthalenic group and short alkyl chains were introduced on either side of TTF unit, which results in asymmetric planar structure. TTF molecule is expected to show many interesting properties.

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Dispersion of carbon nanotube in polymer composite and their field emission superiority

  • Park, J.H.;Jeon, S.Y.;Alegonkar, P.S.;Yoo, J.B.
    • 한국정보디스플레이학회:학술대회논문집
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    • 2007.08a
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    • pp.778-781
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    • 2007

  • The dispersion of carbon nanotubes in composite and their field emission superiority have been discussed. Four synthesis methods have been studied. The CNT-composite, synthesized by the combination of the chemical and mechanical dispersion routes shows superior dispersion as well as field emission characteristics as compared to other syntheses methods.

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Syntheses and Central Nervous Depressant Activities of Piperine Derivatives (II) Piperic Acid Amides (Piperine유도체의 합성 및 중추억제작용에 관한 연구(II) Piperic Acid Amide 유도체)

  • 은재순;임중기;김완주;우원식;이은방
    • YAKHAK HOEJI
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    • v.27 no.4
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    • pp.283-287
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    • 1983

  • In order to search more active and less toxic central nervous depressants, piperic acid amides were synthesized by condensation of piperonal with crotonic acid amides. The bioassay results revealed that, among the compounds synthesized, the piperonic acid methylamide and ethylamide exhibited potent protective activity against strychnine-induced convulsion.

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Syntheses and Central Nervous Depressant Activity of Piperine Derivatives(III) N-Piperoyl Amino Acids (Piperine유도체의 합성 및 중추억제작용에 관한 연구(III) N-Piperoylamino Acid 유도체)

  • 이한구;임중기;이은방;우원식
    • YAKHAK HOEJI
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    • v.27 no.4
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    • pp.289-293
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    • 1983

  • Twelve new N-piperoyl amino acids were synthesized by acylation of amino acids with piperoylchloride in order to develop the new central nervous depressants. Silylation of the carboxylic group of amino acids not only precluded side reactions but-also facilitated acylation at room temperature without catalysts. The acute toxicity of all the synthesized compounds were lower than that of piperine itself, whereas they showed strong protective effect against the strychnine-induced mortality.

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Syntheses of Novel 10-Oxodaunomycinone Derivatives (새로운 10-옥소다우노마이시논 유도체의 합성)

  • 노영쇠;김선자;조인호;신홍식
    • YAKHAK HOEJI
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    • v.43 no.1
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    • pp.11-15
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    • 1999

  • A brief route for regiospecific synthesis of novel 10-Oxodaunomycinone Derivatives (10a, b) is described. Dimethoxy-l-tetralone 4 was converted to acetyl tetralone (5a, b) which was oxidized with oxygen to obtain cis-diol compound (8a, b). The construction of (10a, b) was completed by the condensation of phthaloyl dichloride 9 with cis-diol (8a, b)

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