• Title/Summary/Keyword: University Archives

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Studies on the Synthesis of Naphthoquinoids

  • Park, Oee-Sook;Kim, Ju-Cheun
    • Archives of Pharmacal Research
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    • v.21 no.3
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    • pp.326-329
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    • 1998
  • Four derivatives of 6-oxo-3,4,4a,5-tetrahydro-3-hydroxy-2,2-dimethylnaphtho-1,2-pyran (1), known as bacterial, bacteriostatic, fungicidal, fungistatic agents, were synthesized to investigate the effect of substituents on the aromatic ring.

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Antibacterial Acativity of Camellia sinensis Extracts Against Dental Caries

  • Rasheed, Azmat;Haider, Mujtaba
    • Archives of Pharmacal Research
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    • v.21 no.3
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    • pp.348-352
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    • 1998
  • Different bacteria wwere seperated from saliva and teeth of cariogenic patients and identified by a variety of morphological and biochemical tests. Extracts of green tea strongly inhibited Escherichia coli, Streptococcus salivarius and Streptococcus mutans. The antibacterial effect of green and black tea extracts were compared with those of amoxicillin, cephradine and eugenol.

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Chiral Separation of Salbutamol Enantiomers in Human Plasma

  • Seo, Joung-Min;Kim, Kyeong-Ho
    • Archives of Pharmacal Research
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    • v.17 no.4
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    • pp.244-248
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    • 1994
  • A stereoselective and sensitive high performance liquid chromatography using fluoresecence deterctor was examined for the determination of R(-) and S(+)-salbutamol in human plasma. Solid phase extraction method using silica as sorbent was used to extract salbutamol racemates from the plasma matrices. After fractionation and freeze-drying of the eluates containing salbutamol racemates, they were separated and quantified on a chirla stationary column. The detection limit of each enantiomer was 2 ng/ml in human plasma (S/N=3).

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One-pot Synthesis of Cinnamylamines with Various Protecting Groups from Cinnamyl Ethers

  • Jung, Young-Hoon;Kim, Ji-Duck
    • Archives of Pharmacal Research
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    • v.24 no.5
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    • pp.371-376
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    • 2001
  • The reaction of various alkyl cinnamyl ethers with CSI afforded the corresponding cinnamylamines with various protecting groups, such as -NHMoc, -NHiPoc, -NHCbz, -NHPnz, -NHTroc and -NHAloc. In the case of cinnamyl t-butyl ether and cinnamyl p-methoxybenzyl ether, the corresponding cinnamyl carbamates were formed via a different reaction pathway from the above.

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Antioxidative Effects of Cichorium intybus Root Extract on LDL (Low Density Lipoprotein) Oxidation

  • Kim, Tae-Woong;Yang, Ki-Sook
    • Archives of Pharmacal Research
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    • v.24 no.5
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    • pp.431-436
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    • 2001
  • The water extract of Cichorium intybus (WECI) showed a remarkable antioxidative effect on LDL, and inhibitory effects on the production of thiobarbituric acid reactive substance and the Degradation of fatty acids in LDL. Vitamin 1 and unsaturated fatty acids in LDL were protected by adding WECI from the effects of metal catalyzed LDL oxidation. From the results obtained, we conclude that LDL oxidation is inhibited in vitro by the addition of WECI, and that LDL is protected by WECI from oxidative attack, as shown by agarose gel electrohporesis.

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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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    • v.26 no.11
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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 $\mu M$.

A Facile Synthesis of N,N'-Disubstituted Ureas from Amide and Amine by Using N-Bromophthalimide (NBP) and Silvercetate in One Pot

  • Park, Min-Soo;Choi, Chang-Uk
    • Archives of Pharmacal Research
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    • v.17 no.1
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    • pp.39-41
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    • 1994
  • Various N,N'-disubstituted ureas 5 were easily prepared from the corresponding primary amide 1 by tratment with N-Bromophthalimide $(NBP)-AgOAc-RNH$_{2}$ 4 in dry N,N-dimrthylformamide (DMF). This reaction envolved the intemediate formation of isocyanate 3 from amide 1 via Hofmann rearrangement by treatment with AgOAc and NBP and nucleophilic addition of amine 4 to this isocyante 3. This method is simple enough to be applied to the synthesis of various N,N'-disubstututed ureas scale conviently.

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Reactivity and Suitability of t-Boc-protected Thiophosphotyrosine Intermediate Analogs for the Solid or Solution Phase Peptide Synthesis

  • Kim, Eun-Kyung;Choi, Hee-Sung;Lee, Eung-Seok
    • Archives of Pharmacal Research
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    • v.21 no.3
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    • pp.330-337
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    • 1998
  • N-(tert-Butoxycarbonyl)-O-(dimethythiophosphono)-L-tyrosine (6) and N-(tert-butoxycarbonyl)-O-(dicyanoethylthiophosphono)-L-tyrosine (15) were prepared as intermediates for the synthesis of thiophosphotyrosine-containing peptides. The reactivity and suitability of two compounds for the solid phase or solution phase peptide synthesis utilizing t-Boc chemistry were examined.

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Tumescent Local Anesthesia for Hand Surgery: Improved Results, Cost Effectiveness, and Wide-Awake Patient Satisfaction

  • Lalonde, Donald;Martin, Alison
    • Archives of Plastic Surgery
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    • v.41 no.4
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    • pp.312-316
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    • 2014
  • This is a review article of the wide-awake approach to hand surgery. More than 95% of all hand surgery can now be performed without a tourniquet. Epinephrine is injected with lidocaine for hemostasis and anesthesia instead of a tourniquet and sedation. This is sedation-free surgery, much like a visit to a dental office. The myth of danger of using epinephrine in the finger is reviewed. The wide awake technique is greatly improving results in tendon repair, tenolysis, and tendon transfer. Here, we will explain its advantages.

Overview of Mandibular Condyle Fracture

  • Park, Su-Seong;Lee, Keun-Cheol;Kim, Seok-Kwun
    • Archives of Plastic Surgery
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    • v.39 no.4
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    • pp.281-283
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    • 2012
  • The mandibular condyle is a region that plays a key role in the opening and closing of the mouth, and because fracture causes functional and aesthetic problems such as facial asymmetry, it is very important to perform accurate reduction. Traditionally, there has been disagreement on how to manage fracture of the mandibular condyle. This review explores the misunderstanding of mandibular condyle fracture treatment and modern-day treatment strategies.