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Flavonoids from the Rhizomes of Belamcanda chinensis

  • Chung, Ha-Sook;Woo, Won-Sick
    • Archives of Pharmacal Research
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    • v.14 no.4
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    • pp.357-358
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    • 1991
  • Two flavonoids were isolated from the rhizomes of Belamcanda chinensis and identified as kanzakiflavove-2 and 2R:3R-dihydrokaempferol-7-methylether, respectively.

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Novel Bromolactonization Using N-bromophthalimide

  • Cook, Chae-Ho;Kang, Eung-Ku
    • Archives of Pharmacal Research
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    • v.4 no.2
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    • pp.137-139
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    • 1981
  • Reaction of olefinic acids with N-bromophthalimide in dry N, N-dimethylf-ormamide at room temperature gives bromolactones in good yields.

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A Convergent Synthetic Study of Biologically Active Benzofuran Derivatives

  • Hu, Kun;Jeong, Jin-Hyun
    • Archives of Pharmacal Research
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    • v.29 no.6
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    • pp.476-478
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    • 2006
  • In order to construct a benzofuran library, we developed a model study of benzbromarone. Synthesis has been achieved in 53% overall yield, starting from phenol via the key intermediate 2-ethylbenzofuran which was afforded by intramolecular Wittig reaction.

Effect of Papaverine on Acetylcholinesterase in Rat Brain

  • Park, Eun-Hee;Eun, Chung
    • Archives of Pharmacal Research
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    • v.12 no.1
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    • pp.34-38
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    • 1989
  • Papaverine administration produced significant increases in acetylcholinesterase activity in cerebral cortex and striatum of rat brain. Two related compounds, tetrahydropapaverine and tetrahydropapaveroline, also gave similar effects. However, their actions seem to be indirect because papaverine has no in vitro effect on the enzymatic activity.

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Sapogenins from albizzia julibrissin

  • Kang, Sam-Sik;Woo, Won-Sick
    • Archives of Pharmacal Research
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    • v.6 no.1
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    • pp.25-28
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    • 1983
  • From the stem bark of Albizzia julibrissin (Leguminosae) two known sapogenins, acacigenin B, and machaerinic acid lactone, were isolated and identified by chemical and spectral data. It is the second time that the former was isolate dform the plant sources.

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Phytochemical study on melandrium firmum

  • Woo, Won-Sicka;Choi, Jae-Sue;Chang, Hye-Soon
    • Archives of Pharmacal Research
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    • v.8 no.3
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    • pp.133-137
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    • 1985
  • The aglycones of saponins isolated from Melandrium firmum were identified as gypsogenin, gypsogenic acid and quillaic acid.

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Hofmann Rearrangement by Using N-bromophthalimide-Silveracetate in DMF

  • Park, Min-Soo;Choi, Chang-Uk
    • Archives of Pharmacal Research
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    • v.16 no.2
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    • pp.152-154
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    • 1993
  • By using N-bromophthalimide (NBP) as halonium ion source for the Hofmann rearrangement, a series of primary amide could be ocnverted to the corresponding cabamate in excellent yields. So NBP was throught to be very effective and practical halonium ion source for the Hofmann rearrangement.

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