• 제목/요약/키워드: Hook Oxidation

검색결과 2건 처리시간 0.015초

Fibrostatins의 부분 합성 (Partial Synthesis of Fibrostatins)

  • 이관희
    • 대한화학회지
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    • 제47권1호
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    • pp.47-58
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    • 2003
  • 알킬화제로 작용할 수 있는 naphthoquinones인 fibrostatin이 Streptomyces catanulae subsp. griseospora 배양액으로부터 추출되었다. 이들 quinone 화합물의 합성은 이 화합물들의 생물학적 반응성 연구에 매우 중요하다. 본 논문에서는 효과적으로 치환체들의 위치를 조절할 수 있는 방법인 Hooker oxidation을 이용하여 fibrostatin B를 합성하였다.

더덕을 첨가한 양갱의 품질 특성에 관한 연구 (A Study of the Quality Characteristics of Yanggaeng Supplemented with Codonopsis lanceolata Traut (Benth et Hook))

  • 김명희;채현석
    • 동아시아식생활학회지
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    • 제21권2호
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    • pp.228-234
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    • 2011
  • This study investigated the anti-oxidation activities of fresh Codonopsis lanceolata Traut (Benth et Hook) and red beans, and also the quality properties of fresh Codonopsis lanceolata Yanggaeng to which raw Codonopsis lanceolata Traut (Benth et Hook) was added. The DPPH free radical scavenging activities of fresh Codonopsis lanceolata Traut (Benth et Hook) and red beans were 31.42% and 37.98%, respectively. Thus, that of red beans was rather the total polyphenol contents of fresh Codonopsis lanceolata Traut (Benth et Hook) and red beans were 5.74 mg/g and 4.14 mg/g respectively, and the total flavonoid contents of fresh Codonopsis lanceolata Traut (Benth et Hook) and red beans were 5.07 mg/g and 1.29 mg/g respectively. As higher amounts of Codonopsis lanceolata Traut (Benth et Hook) were added to Yanggaeng, the water content in the Yanggaeng continued to increase. Preferences were in the following order: 21%>12%>28%>7%>0%, and it was found that the optimal level for addition of fresh Codonopsis lanceolata Traut (Benth et Hook) was between 12% and 21%. It was also shown that adjusting the amount of ingredients or agar would improve the product quality.