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Paper | Regular issue | Vol 36, No. 6, 1993, pp.1359-1366
Published online, 1st January, 1970
DOI: 10.3987/COM-92-6320
Components of the Root Bark of Morus insignis Bur. 3. Structures of Three New Isoprenylated Xanthones Morusignins I, J, and K and an Isoprenylated Flavone Morusignin L.

Yoshio Hano, Tsuyoshi Okamoto, Katsue Suzuki, Masami Negishi, and Taro Nomura*

*Faculty of Pharmaceutical Sciences, Toho University, 2-2-1, Miyama, Funabashi, Chiba 274-8510, Japan

Abstract

Three new isoprenylated xanthones, morusignins I (1), J (2), and K (3) as well as a new isoprenylated flavone, morusignin L (4) were isolated from the root bark of Morus insignis Bur. (Moraceae), collected in Paraguay. The structures of morusignins I -L were shown to be 1 - 4, respectively, on the basis of spectroscopic data.