title: Structures of four new isoprenylated xanthones, cudraxanthones h,i,j, and k1,2.
abstract: Four new isoprenylated xanthones, cudraxanthone H,I,J, and K were isolated from the ethanol extract of the root bark of CUDRANIA TRICUSPIDATA (Carr.) Bur. (Moraceae), collected in China. The structures of cudraxanthones H,I,J, and K were shown to be 1- 4, respectively, on the basis of chemical and spectral evidence.
authors.affiliation: Faculty of Pharmaceutical Sciences, Toho University, 2-2-1, Miyama, Funabashi, Chiba 274, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Hano
authors.forename: Y
authors.initials: Y
authors.lastname: Matsumoto
authors.forename: J Y
authors.initials: JY
authors.lastname: Sun
authors.forename: T
authors.initials: T
authors.lastname: Nomura