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Paper | Regular issue | Vol 45, No. 1, 1997, pp.163-175
Published online, 1st January, 1970
DOI: 10.3987/COM-96-7666
■ Artonols A, B, C, D, and E, Five New Isoprenylated Phenols from the Bark of Artocarpus communis Forst.

Miwa Aida, Norihisa Yamaguchi, Yoshio Hano, and Taro Nomura*

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

Abstract

Five new isoprenylated phenols, artonols A (1), B (2), C (3), D (4), and E (5) were isolated from the bark of Artocarpus communis Forst. (Moraceae), along with four known compounds, artonin E (6), cycloartobiloxanthone (7), artonin K (8), and artobiloxanthone (9). The structures of artonols A, B, C, D, and E were shown to be 1 - 5, respectively, on the basis of spectroscopic data. Artonols A (1) and B (2) have unique structures. These compounds are biogenetically assumed to be derivatives from the flavone derivatives having the dihydrobenzoxanthone skeleton, such as artobiloxanthone (9).