• Title/Summary/Keyword: S-47

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Partial Synthesis of Fibrostatins (Fibrostatins의 부분 합성)

  • Kwan Hee Lee;Harold w. Moore
    • Journal of the Korean Chemical Society
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    • v.47 no.1
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    • pp.47-58
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    • 2003
  • Fibrosstatins, which were isolated from the culture broth of Streptomyces catanulae subsp. griseospora, are naphthoquinones which can work as alkylating agents. It is important to synthesize these quinone compounds for the study of their biological activities. In this paper, an efficient method, Hooker oxidation, to control the regiochemistry in the synthesis of fibrostatin B is reported.

Linkage Between Parent-Child Relationships and Children's Peer Relationships: Cognitive Representational Models as Mediator (부모-자녀 관계와 아동의 또래 관계간의 연계 : 인지 표상 모델의 매개 역할)

  • Rah, Yumee
    • Korean Journal of Child Studies
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    • v.22 no.1
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    • pp.83-96
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    • 2001
  • This study examined the links among parents' interaction styles, their children's representational models of parents and peers, and children's peer acceptance and friendship quality. Forty-seven fourth grade children and their parents (47 mothers and 47 fathers) were observed during discussion interaction, and, one year later, 119 children (63 boys, 56 girls), including the original sample, were interviewed to assess representational models and peer competence. Parents' interaction styles predicted children's representations of parents, moderating the effect of each parent's style, children's representations of peers mediated the relations between the representational models of mothers and their peer acceptance.

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Synthesis and Antibacterial Activity of Some Oxazolone Derivatives (옥사졸론 유도체의 합성과 항균성)

  • Aaglawe M. J.;S. S. Dhule;S. S. Bahekar;P. S. Wakte;D. B. Shinde
    • Journal of the Korean Chemical Society
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    • v.47 no.2
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    • pp.133-136
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    • 2003
  • A series of oxazolone derivatives (4a-n) have been synthesized as a potential antibacterial agent. Titled compounds have been prepared by the condensation of aryloxy acetyl-amino-acetic acid with aldehyde in presence of ethanol, acetic anhydride and sodium acetate. The structures of the new compounds were established on the basis of $^1H$ NMR and IR spectral data.