Woodfordin D and Oenothein A, Trimeric Hydrolyzable Tannins of Macro-Ring Structure with Anti-tumor Activity

Takashi YOSHIDA; Tong CHOU; Muneto MATSUDA; Taeko YASUHARA; Kazufumi YAZAKI; Tsutomu HATANO; Aya NITTA; Takuo OKUDA

doi:10.1248/cpb.39.1157

Takashi YOSHIDA, Tong CHOU, Muneto MATSUDA, Taeko YASUHARA, Kazufumi YAZAKI, Tsutomu HATANO, Aya NITTA, Takuo OKUDA

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Keywords: Woodfordia fruticosa, Lythraceae, Oenothera biennis, Onagraceae, woodfordin D, oenothein A, tannin, trimeric ellagitannin, woodfordinoyl group

JOURNAL FREE ACCESS

1991 Volume 39 Issue 5 Pages 1157-1162

DOI https://doi.org/10.1248/cpb.39.1157

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Abstract

Two new antitumor trimeric hydrolyzable tannins, woodfordin D (5) and oenothein A (13), were isolated from the dried flowers of Woodfordia fruticosa, and their macrocyclic structures, which have a novel constituent unit (woodfordinoyl group) connecting the monomers, have been elucidated on the basis of spectral and chemical evidence, Oenothein A (13) was also isolated from the leaves of Oenothera biennis.

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