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Paper | Regular issue | Vol 31, No. 4, 1990, pp.643-650
Published online, 1st January, 1970
DOI: 10.3987/COM-89-5304
Structures of Prenylated Dihydrochalcone, Gancaonin J and Homoisoflavonone, Gancaonin K from Glycyrrhiza pallidiflora

Toshio Fukai, Qing-Hua Wang, Ryouhei Inami, and Taro Nomura*

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

Abstract

A new prenylated dihydrochalcone, gancaonin J and a homoisoflavanone, gancaonin K, along with fourteen known compounds were isolated from the root of Glycyrrhiza pallidiflora MAXIM. Structures of gancaonins J and K were shown to be 1 and 2, respectively, on the basis of spectral evidence. Gancaonin K (2) and 2’-O-methyllicodione (17) being isolated from the same material, thelatterseems to be a biogenetical precursor of 2. From the aerial parts of G. pallidiflora MAXIM., two known phenolic compounds were isolated.