Structures and Antioxidative Activity of retro Carotenoids from the Berries of the Japanese Yew, Taxus cuspidata

Takashi MAOKA; Yoshihiro ITO; Yasuhiro FUJIWARA; Keiji HASHIMOTO

doi:10.5650/jos1996.45.641

Structures and Antioxidative Activity of retro Carotenoids from the Berries of the Japanese Yew, Taxus cuspidata

Takashi MAOKA, Yoshihiro ITO, Yasuhiro FUJIWARA, Keiji HASHIMOTO

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Keywords: retro carotenoid, Taxus cuspidata, rhodoxanthin, eschscholtzxanthone, eschscholtzxanthin, antioxidative activity

JOURNAL FREE ACCESS

1996 Volume 45 Issue 7 Pages 641-646

DOI https://doi.org/10.5650/jos1996.45.641

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Abstract

The structures and antioxidative activity of retro carotenoids from the berries of the Japanese yew, Taxus cuspidata were studied. Three retro carotenoids, rhodoxanthin (1), eschscholtzxanthone (2) and eschscholtzxanthin (3) were identified by spectroscopy. The stereo-structure of (2) was fully determined based on ¹H-NMR and CD spectral data. These retro carotenoids showed stronger antioxidative activity for lipid peroxidation induced by free radical and singlet oxygen than that of β-carotene.

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