• 제목/요약/키워드: ${\mu}$ Synthesis

검색결과 1,510건 처리시간 0.033초

Synthesis and Antiviral Activity of Novel trans-2,2-Dimethyl Cyclopropyl Nucleosides

  • Kook, Min-Chul;Choi, Bo-Gil
    • Archives of Pharmacal Research
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    • 제26권11호
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    • pp.887-891
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    • 2003
  • Novel trans-2,2-dimethylcyclopropyl nucleosides were synthesized as potential antiviral agents. The key intermediate, 3, was synthesized via five steps from ethyl chrysanthemate and condensed with purine bases using the Mitsunobu reaction to give six cyclopropyl nucleosides. These synthesized nucleosides did not show any significant antiviral activity against HSV-1, HSV-2, EMCV, Cox B3, or VSV, at concentrations up to 100 $\mu M$.

N-치환 5-Hydroxyanthranilic acid의 합성 (Synthesis of N-Substituted 5-Hydroxyanthranilic Acid)

  • 문정술;이강노;임중기;우원식;박상우
    • 약학회지
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    • 제37권3호
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    • pp.243-246
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    • 1993
  • Six N-substituted-5-hydroxyanthranilic acids were synthesized by the coupling reaction of 5-tosyloxyanthranilic acid ethyl ester with corresponding acid chlorides. The structure of the obtained compounds was proved by NMR and IR. These compounds did not inhibit the growth of micro-organisms while suppressed HSV-1 replication in vero cell at 100 $\mu\textrm{g}$/ml.

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나노 촉매가 담지 된 탄소소재의 One-Step 합성 (One-Step Synthesis of Catalyst Supported on Carbon Materials)

  • 강준;이명훈;윤용섭;박준무
    • 한국표면공학회:학술대회논문집
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    • 한국표면공학회 2014년도 추계학술대회 논문집
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    • pp.268-269
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    • 2014
  • 나노입자 담지 탄소소재는 촉매재료로써 다양하게 응용되고 있으며, 이들 재료의 공정수를 획기적으로 줄이고자 솔루션 플라즈마라는 새로운 공정을 이용하여 One-Step으로 합성하는데 성공하였다. 합성된 재료의 경우 1~3nm의 미세한 나노입자가 탄소소재위에 균일하게 분산되어 있는 것을 확인 할 수 있었고, 촉매 활성 역시 매우 뛰어남을 확인 할 수 있었다.

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Synthesis and biological activity of 4,5-polymethylenepyrazole-derived HMG-CoA reductase inhibitors

  • Kim, Jin-Il;Choi, Young-Hee;Yurngdong Jahng
    • Archives of Pharmacal Research
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    • 제20권2호
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    • pp.158-170
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    • 1997
  • New HMG-CoA reductase inhibitors, in which 3-substituted 4, 5-polymethylenepyrazoles are employed as a hydrophobic anchor connected to tetrahydro-4-hydroxy-2H-pyran-2-one by a two-carbon bridge, were designed and synthesized to exhibit significant inhibitory activity comparable to mevinolin. The most potent enzyme inhibitor $(11cc, IC_{50}=0.01{\mu}M)$ is 4-fold more potent than lovastatin.

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액상-기상 반응법에 의한 탄산칼슘 미분말의 합성과 형상제어 (Synthesis and Shape Control of Calcium Carbonate Fine Powders by Liquid-Gas Reaction Method)

  • 민경소;최상흘
    • 한국세라믹학회지
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    • 제28권3호
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    • pp.205-214
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    • 1991
  • Calcium carbonate fine powders were synthesized by blowing CO2 gas in CaO or Ca(OH)2 suspension, and the shapes of powders obtained were examined for each synthetic condition. When water was used as a solvent, ultrafine calcite powders with the average size of∼0.03$\mu\textrm{m}$ were obtained. When synthesized using methanol as a solvent, amorphous phase and spherical vaterite phase were obtained by suction filtering and non-filtering, respectively. Reaction did not occured in ethanol medium, but spherical vaterite phase was obtained by adding ethylene glycol in ethanol.

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새로운 코직산 유도체의 합성과 티로시나제 저해활성 (Synthesis of Novel Kojic Acid Derivatives and Their Tyrosinase Inhibitory Activities)

  • 김지연;임세진
    • 약학회지
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    • 제43권1호
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    • pp.28-32
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    • 1999
  • Four derivatives of kojic acid were synthesized and their inhibitory activities against tyrosinase were evaluated. The C-2 hydroxymethyl and C-7 hydroxyl of kojic acid were replaced by carboxylate and amine, respectively. These derivatives were coupled to L-phenylalanine, producing two amide compounds. The carboxylate derivative (3), its amide compound (5), and the amine derivative (7) were weak inhibitors. The amide compound (9) where amine derivative (7) coupled to L-phenylalanine showed strong inhibitory activity ($IC_{50}=24.6{\;}{\mu}M$) comparable to kojic acid.

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Synthesis and In Vitro Cytotoxicity of 1,3-Dioxoindan-2-Carboxylic Acid Arylamides

  • Jung, Jae-Kyung;Ryu, Jin-Hyeong;Yang, Sung-Il;Cho, Jung-Sook;Lee , Hee-Soon
    • Archives of Pharmacal Research
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    • 제27권10호
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    • pp.997-1000
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    • 2004
  • A series of 1,3-dioxoindan-2-carboxylic acid arylamides were synthesized and evaluated for in vitro cytotoxicity against four human cancer cell lines (HOP62, SK-OV-3, MD-MB-468 and T- 47D). The most active was compound 3e (1.2 ${\mu}M$ against SK-OV-3 cell line) bearing a 4- methyl substituent.

Synthesis and Antitubercular Activity of 6-Chloro (Unsubstituted)- 2-Methoxy-9-Substituted Acridine Derivatives

  • Aly, Enayat I.;Abadi, Ashraf H.
    • Archives of Pharmacal Research
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    • 제27권7호
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    • pp.713-719
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    • 2004
  • Several analogues of the general formulae 2-methoxy-9-substituted acridine and 6-chloro-2-methoxy-9-substituted acridine were synthesized and evaluated in vitro at 6.25 $\mu\textrm{g}$/mL against M. tuberculosis $H_{37}Rv$. Compounds 15 and 17 showed potential antitubercular activity with 100% inhibition to the virulent mycobacterium.