Four Eremophil-9-en-8-one Derivatives from Cremanthodium stenactinium Samples Collected in China

doi:10.3390/molecules161210645

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Molecules 2011, 16(12), 10645-10652; doi:10.3390/molecules161210645

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Four Eremophil-9-en-8-one Derivatives from Cremanthodium stenactinium Samples Collected in China

Yoshinori Saito¹, Mayu Ichihara¹, Yasuko Okamoto¹, Xun Gong², Chiaki Kuroda³ and Motoo Tori^1,*

¹ Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Yamashiro-cho, Tokushima, 770-8514, Japan ² Kunming Institute of Botany, Chinese Academy of Science, Kunming 650204, China ³ Department of Chemistry, Rikkyo University, Nishi-Ikebukuro, Toshima-ku, Tokyo 171-8501, Japan

* Author to whom correspondence should be addressed.

Received: 22 November 2011; in revised form: 9 December 2011 / Accepted: 16 December 2011 / Published: 19 December 2011

(This article belongs to the Special Issue Terpenoids)

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Abstract: Two samples of Cremanthodium stenactinium (Asteraceae) were collected in Sichuan Province, China. From the ethyl acetate extracts of the roots, three new eremophilane-type sesquiterpenoids and one new trinoreremophilane compound were isolated, together with other known eremophilanes. Their structures were determined based on the spectroscopic data. This is the first report of isolation of eremophilane-type compounds from the genus Cremanthodium.

Keywords: Asteraceae; Cremanthodium stenactinium; eremophilanes; sesquiterpenes

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MDPI and ACS Style

Saito, Y.; Ichihara, M.; Okamoto, Y.; Gong, X.; Kuroda, C.; Tori, M. Four Eremophil-9-en-8-one Derivatives from Cremanthodium stenactinium Samples Collected in China. Molecules 2011, 16, 10645-10652.

AMA Style

Saito Y, Ichihara M, Okamoto Y, Gong X, Kuroda C, Tori M. Four Eremophil-9-en-8-one Derivatives from Cremanthodium stenactinium Samples Collected in China. Molecules. 2011; 16(12):10645-10652.

Chicago/Turabian Style

Saito, Yoshinori; Ichihara, Mayu; Okamoto, Yasuko; Gong, Xun; Kuroda, Chiaki; Tori, Motoo. 2011. "Four Eremophil-9-en-8-one Derivatives from Cremanthodium stenactinium Samples Collected in China." Molecules 16, no. 12: 10645-10652.

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