Structures of three new isoprenylated xanthones, cudraxanthones e, f, and g 1,2.
Three new isoprenylated xanthones, cudraxanthones E, F, and G along with a known xanthone, 6-deoxyisojacareubin, were isolated from the ethanol extract of the root bark of CUDRANIA TRICUSPIDATA (Moraceae), collected in China. The structures of cudraxanthones E, F, and G were shown to be 1-3, respectively, on the basis of spectral evidence.
Hano
Y
Y
Faculty of Pharmaceutical Sciences, Toho University, 2-2-1, Miyama, Funabashi, Chiba 274, Japan.
Matsumoto
Y
Y
Sun
J Y
JY
Nomura
T
T