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Letters in Organic Chemistry

Author(s): Yoshiyasu Fukuyama, Mai Morisaki, Yuka Minoshima, Hiroyuki Minami, Hironobu Takahashi and Yoshinori Asakawa

DOI: 10.2174/1570178043488473

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Cyclovibsanins, Unprecedented Seven-Membered Vibsane-Type Diterpenes from Viburnum awabuki

Page: [189 - 193] Pages: 5

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Abstract

Four unprecedented vibsane-type diterpenes, named cyclovibsanin A, 15-Omethylcyclovibsanin A, 15-O-methylcyclovibsanin B, and 3-hydroxy-15-O-methylcyclovibsanin A, were isolated from the leaves of Viburnum awabuki. Their unique tricyclo[6.3.2.00,0]tridecane structures and plausible biosynthesis of cyclovibsanins are discussed here.

Keywords: vibsane-type diterpene, cyclovibsanin, seven-membered vibsane, viburnum awabuki