• 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.

• Journal of the East Asian Society of Dietary Life
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• v.21 no.2
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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.