Structures of Four New Isoprenylated Xanthones, Cudraxanthones L, M, N, and O from Cudrania tricuspidata1,2.
Four new isoprenylated xanthones, cudraxanthones L, M, N, and O were isolated from the ethanol extract of the root bark of CUDRANIA TRICUSPIDATA (Carr.) Bur. (Moraceae), collected in China. The structures of cudraxanthones L, M, N, and O were shown to be 1-4, respectively, on the basis of chemical and spectral evidences.
Hano
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Faculty of Pharmaceutical Sciences, Toho University, 2-2-1, Miyama, Funabashi, Chiba 274, Japan.
Matsumoto
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Y
Shinohara
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K
Sun
J Y
JY
Nomura
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T