Components of Root Bark of<i>Cudrania tricuspidata</i>l.^1,2Structures of Four New Isoprenylated Xanthones, Cudraxanthones A, B, C and D

Abstract

Four new isoprenylated xanthones, cudraxanthones A, B and C were isolated from the N-hexane extract of the root bark of CUDRANIA TRICUSPIDATA (Carr.) Bur. (Japanese name "Hariguwa"; Moraceae), and cudraxanthone D from the benzene extract. The structures of cudraxanthones A, B, C and D were shown to be 1-4, respectively, on the basis of spectral and chemical evidence.