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Neovibsanines A and B, unprecedented diterpenes from Viburnum awabuki

โœ Scribed by Yoshiyasu Fukuyama; Hiroyuki Minami; Kumiko Takeuchi; Mitsuaki Kodama; Kazuyoshi Kawazu


Book ID
104255754
Publisher
Elsevier Science
Year
1996
Tongue
French
Weight
229 KB
Volume
37
Category
Article
ISSN
0040-4039

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โœฆ Synopsis


Neovibsanines A and B, isolated from the leaves of Viburnum awabuki, are unprecedented tricyclic diterpenoids, which are presumably biosynthesized via consecutive ring cleavage and cyclization from vibsanine B. Their relative structures have been established by extensive analysis of spectroscopic data and photochemical reaction of vibsanine B.


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Neovibsanin C, a macrocyclic peroxide-co
โœ Miwa Kubo; Hiroyuki Minami; Eriko Hayashi; Mitsuaki Kodama; Kazuyoshi Kawazu; Yo ๐Ÿ“‚ Article ๐Ÿ“… 1999 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 237 KB

A unique neovibsane-type diterpene, neovibsanin C (1), isolated from the leaves of Viburnum awabuki, has been demonstrated to have an unprecedented structure macrocyclized via an endo-peroxide by extensive analyses of spectral data and chemical degradation as well as synthesis of I from neovibsanin

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