Antioxidative Flavan-3-ol Glycosides from Stems of Rhizophora stylosa

Kensaku TAKARA; Ayako KUNIYOSHI; Koji WADA; Kazuhiko KINJYO; Hironori IWASAKI

doi:10.1271/bbb.80065

This article has now been updated. Please use the final version.

Antioxidative Flavan-3-ol Glycosides from Stems of Rhizophora stylosa

Kensaku TAKARA, Ayako KUNIYOSHI, Koji WADA, Kazuhiko KINJYO, Hironori IWASAKI

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Keywords: Rhizophora stylosa, mangrove, flavan-3-ol glycoside, antioxidant, radical scavenging activity

JOURNAL FREE ACCESS Advance online publication

Article ID: 80065

DOI https://doi.org/10.1271/bbb.80065

The final version of this article is now available: Vol. 72 (2008) , No. 8 p.2191

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Abstract

Two flavan-3-ol glycosides together with seven flavan-3-ols were isolated from stems of the mangrove plant, Rhizophora stylosa. Their structures were established as glabraoside A (7) and glabraoside B (8) by spectroscopic and chemical methods. The antioxidative activity of these isolated compounds evaluated by the diphenylpicrylhydrazyl (DPPH) radical scavenging reaction was higher than that of L-ascorbic acid.

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