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Paper | Special issue | Vol 79, No. 1, 2009, pp.617-626
Published online, 6th November, 2008
DOI: 10.3987/COM-08-S(D)26
A New Trimeric Hydrolyzable Tannin, Oenotherin T2, Isolated from Aerial Parts of Oenothera tetraptera Cav.

Shoko Taniguchi, Yoko Imayoshi, Takashi Yoshida, and Tsutomu Hatano*

*Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-naka, Okayama 700-8530, Japan


A new hydrolyzable tannin, oenotherin T2, was isolated from the aerial parts of Oenothera tetraptera Cav., together with 15 known polyphenolic compounds. The trimeric structure of oenotherin T2 was elucidated based on spectroscopic data and chemical correlation with oenotherin T1.