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Paper | Regular issue | Vol 31, No. 2, 1990, pp.373-382
Published online, 1st January, 1970
DOI: 10.3987/COM-89-5260
Structure of Five New Prenylated Flavonoids L, M, N, O, and P from Aerial Parts of Glycyrrhiza uralensis

Toshio Fukai, Qing-Hua Wang, Mitsuo Takayama, and Taro Nomura*

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


Five new prenylated flavonoids were isolated from the aerial parts of Glycyrrhiza uralensis FISCH. et DC. (Leguminosae), and the structures of the new compounds, gancaonins L, M, N, O, and P were elucidated as 8-prenylated 5,7,3’,4’-tetrahydroxyisoflavone, 8-prenylated 5,7-dihydroxy-8’-methoxyisoflavone, 6-prenylated 4’-methoxy-5,7,2’-trihydroxyisoflavone, 6-prenylated 5,7,3’,4’-tetrahydroxyflavone, and 6-prenylated 5,7,3’,4’-tetrahydroxyflavonol, respectively, on the basis of spectral evidence.