• Bulletin of the Korean Chemical Society
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• 제31권1호
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• pp.23-24
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• 2010

• Journal of Applied Biological Chemistry
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• 제50권2호
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• pp.85-87
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• 2007

To establish the synthetic method for dihydrochalcones as an important bioactive compounds, 2'-hydroxydihydrochalcone has been synthesized from the reduction of flavone in 20% yield. Flavone with five equivalents of ammonium formate in the presence of Pd/C in methanol under $N_2$ atmosphere produced the C-ring opened product. It was characterized by UV-VIS, ESI-MS and $^1H-NMR$ spectroscopy, and identified as 2'-hydroxydihydrochalcone.

• Journal of Applied Biological Chemistry
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• 제49권3호
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• pp.90-94
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• 2006

Bactericidal activity of grapefruit seed extract (GSE)-based disinfectant, as a safe disinfectant, was measured against five bacteria by Korean Food & Drug Administration (KFDA) dilution-neutralization method. GSE-based disinfectant showed a 99.9999% bactericidal activity against Escherichia coli ATCC 10536, Salmonella typhi ATCC 29629, Staphylococcus aureus ATCC 6538, Bacillus cereus ATCC 11778, and Listeria monocytogenes ATCC 1911 at the concentration of 2.15% GSE. It showed better bactericidal activity against Gram-negative bacteria of E. coli ATCC 10536 and S. typhi ATCC 29629 at lower concentration of GSE (0.43%). Based on the results, it was suggested that a possible bactericidal mechanism of GSE active ingredients was due to the abrupt osmotic shift during the bactericidal activity test by KFDA method.

• Journal of Applied Biological Chemistry
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• 제49권1호
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• pp.8-10
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• 2006

Compositions of methionine-metal chelates have been investigated by FT-IR and XRD studies to elucidate their molecular structures. It was concluded that Copamin and Zincamin contain a high percentage of crystalline products, presumably 2:1 Methionine-Cu or Zn complexes. On the contrary, FT-IR and XRD spectra of Ferramin didn't show any characteristics of the chelate and it was concluded to contain major components of starting $FeSO_4$ and methionine without chelation.

• Bulletin of the Korean Chemical Society
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• 제35권6호
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• pp.1883-1886
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• 2014

• Bulletin of the Korean Chemical Society
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• 제29권11호
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• pp.2299-2302
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• 2008

• 한국결정학회지
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• 제16권2호
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• pp.66-74
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• 2005

다양한 생리활성을 가지는 marine natural products는 일반적인 secondary metabolites와 유사한 구조를 가지는데, 염소, 브롬, 요오드의 할로겐 원소에 의해 수식이 되어있는 것이 일반적이다. Vanadium haloperoxidase는 이러한 marine natural products의 생산에 중요한 효소로 vanadate를 조효소로 하는 금속효소이다. 본 리뷰에서는 vanadium haloperoxidase의 분리와 단백질 구조를 살펴보고, 이 금속효소의 작용기작에 대해서 설명할 것이다. 마지막으로, vanadium haloperoxidase의 반응성과 secondary metabolites 중 indole, terpenoids, acetogenins의 생합성 예를 살펴볼 것이다.

• Journal of Applied Biological Chemistry
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• 제51권1호
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• pp.17-19
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• 2008

Isoflavanone has been synthesized from the reduction of isoflavone in nearly quantitative yield. Isoflavone with seven equivalents of ammonium formate in the presence of Pd/C in ethanol under $N_2$ atmosphere exclusively produced the two-electron reduced product in two hours. It was characterized by various spectroscopic methods, including UV-VIS, EI-MS, $^1H$-NMR, $^{13}C$-NMR and $^1H$, $^1H$-COSY. The racemic mixture was separated by Sumi-Chiral column chromatography and the absolute configurations of the enantiomers were characterized by circular dichroism spectroscopy.

• Bulletin of the Korean Chemical Society
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• 제28권3호
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• pp.417-420
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• 2007

Mononuclear mixed-anions Mn complex of TPAMn(η2-NO3)(η-ClO4), where TPA is tris(2-pyridylmethyl)-amine, has been synthesized and characterized. The neutral TPAMn(η2-NO3)(η-ClO4) was obtained from the reaction between Mn(NO3)2·4H2O and [H3TPA](ClO4)3 in MeOH. X-ray crystallographic structure of mononuclear TPAMn(η2-NO3)(η-ClO4) complex showed a seven-coordinated geometry with a tripodal tetradentate TPA, a terminal perchlorate and an η2-bound nitrate.

• Bulletin of the Korean Chemical Society
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• 제29권8호
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• pp.1572-1574
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• 2008