Molecules 2013, 18(5), 4868-4875; doi:10.3390/molecules18054868
Article

Two New Oleanane-Type Triterpenes Isolated from Japanese Post-Fermented Tea Produced by Anaerobic Microbial Fermentation

1 Department of Natural Product Chemistry, Graduate School of Biomedical Sciences,Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan 2 Guangxi Key Laboratory of Functional Phytochemicals Research and Utilization,Guangxi Institute of Botany, Guilin 541006, China
* Author to whom correspondence should be addressed.
Received: 25 February 2013; in revised form: 18 April 2013 / Accepted: 22 April 2013 / Published: 24 April 2013
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Abstract: Four triterpenes were isolated from a traditional Japanese tea product produced by anaerobic microbial fermentation of heated green tea leaves (Camellia sinensis). Two of the compounds were novel and characterized by spectroscopic investigation to be 13,26-epoxy-3β,11α-dihydroxyolean-12-one and 3β,11α,13β-trihydroxyolean-12-one. Two known triterpenes were identified as taraxastane-3β,20β-diol and taraxastane-3β,20α-diol. These triterpenes were not detected in the original green tea leaves.
Keywords: post-fermented tea; anaerobic fermentation; triterpene; oleanane; Awa-bancha

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MDPI and ACS Style

Huang, Y.-L.; Nagai, S.; Tanaka, T.; Matsuo, Y.; Saito, Y.; Kouno, I. Two New Oleanane-Type Triterpenes Isolated from Japanese Post-Fermented Tea Produced by Anaerobic Microbial Fermentation. Molecules 2013, 18, 4868-4875.

AMA Style

Huang Y-L, Nagai S, Tanaka T, Matsuo Y, Saito Y, Kouno I. Two New Oleanane-Type Triterpenes Isolated from Japanese Post-Fermented Tea Produced by Anaerobic Microbial Fermentation. Molecules. 2013; 18(5):4868-4875.

Chicago/Turabian Style

Huang, Yong-Lin; Nagai, Sachi; Tanaka, Takashi; Matsuo, Yosuke; Saito, Yoshinori; Kouno, Isao. 2013. "Two New Oleanane-Type Triterpenes Isolated from Japanese Post-Fermented Tea Produced by Anaerobic Microbial Fermentation." Molecules 18, no. 5: 4868-4875.

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