Tannins and related polyphenols of melastomataceous plants. III. Nobotanins G, H and I, dimeric hydrolyzable tannins from Heterocentron roseum

DOI: 10.1248/cpb.40.66

Source and publish data:

Chemical and Pharmaceutical Bulletin p. 66 - 71 (1992)

Update date:2022-08-03

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Authors:

Yoshida Yoshida

Haba Haba

Nakata Nakata

Okano Okano

Shingu Shingu

Okuda Okuda

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Article abstract of DOI:10.1248/cpb.40.66

Three new hydrolyzable tannin dimers, nobotanins G (6), H (12) and I (13), have been isolated from the leaves of Heterocentron roseum (Melastomataceae), and their structures were elucidated on the basis of chemical degradations and nuclear magnetic resonance spectral analyses. Nobotanin I (13) is a novel dimer possessing a depsidone-forming valoneoyl group in the molecule. Five known tannins, casuarictin (1), strictinin (2), geraniin (3), and nobotanins B (4) and F (5), were also isolated.

Full text of DOI:10.1248/cpb.40.66

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