Isolation and Structure of a Novel Isoflavone Derivative in Red Clover |
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| Authors: | Saburo Tamura Ching-Fun Chang Akinori Suzuki Sumio Kumai |
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| Affiliation: | 1. Department of Agricultural Chemistry, The University of Tokyo Bunkyo-ku, Tokyo;2. National Institute of Animal Industry, Nishinasuno, Tochigi-ken |
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| Abstract: | Absolute configurations of C–2 and C–3 in “Acid III” (IIa), a degradation product of piericidin A diacetate, was determined as R and S, respectively. Consequently both C–9 and C–10 in piericidin A were confirmed to have S configurations. On the basis of UV and NMR specta, configurations of the double bonds in piericidin A were assigned as shown in Ia. |
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