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Chemical and Pharmaceutical Bulletin
Online ISSN : 1347-5223
Print ISSN : 0009-2363
ISSN-L : 0009-2363
Regular Articles
Three New Quassinoids, Ailantinol E, F, and G, from Ailanthus altissima
Sadaaki Tamura, Narihiko Fukamiya, Masayoshi Okano, Junko Koyama, Kazuo Koike, Harukuni Tokuda, Wataru Aoi, Junko Takayasu, Masashi Kuchide, Hoyoku Nishino
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Keywords: quassinoid, Ailanthus altissima, Simaroubaceae, inhibitory effect on Epstein-Barr virus early antigen (EBV-EA) activation
JOURNAL FREE ACCESS

2003 Volume 51 Issue 4 Pages 385-389

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Abstract

Three new quassinoids, ailantinol E (1), ailantinol F (2), and ailantinol G (3), and related compounds were isolated from Ailanthus altissima grown in Taiwan. Their structures were elucidated from spectral evidence. Each new quassinoid was evaluated for its antitumor promoting effects against Epstein-Barr virus early antigen activation introduced by 12-O-tetradecanoylphorbol-13-acetate in Raji cells. The new quassinoids were found to show potent activity without showing any cytotoxicity. The screening for inhibitors against nitric oxide donor action was also conducted using the new quassinoids and some standard samples.

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© 2003 The Pharmaceutical Society of Japan
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