| Budget Amount *help |
¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 1998: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1997: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1996: ¥1,500,000 (Direct Cost: ¥1,500,000)
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| Research Abstract |
Absolute configuration of Carthamin which is the red coloring component of safflower petals, was determined to be S, S.Furthermore, absolute configurations of the other yellow coloring components in which carthamin precursor, safflower yellow B, safflomin A, Safflomin C, and isosafflomin C bear C-glucosylquinochalcone as a common structural unit, were also determined to be S, S in the same way. Model compound of safflower yellow B which includes a chain-type glucose was first synthesized and its hydrolysis produced a small amount of carthamin-model compounds, as well as carthamin's biosynthetic pathway.
Next, we first synthesized Wasabidienone A which is one of the metabolites of phoma wasabidiae, highly oxidized structure, and a mixture of keto-enol tautomers like carthamin.
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