Neovibsanines A and B, unprecedented diterpenes from Viburnum awabuki
โ 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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โฆ 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.
๐ SIMILAR VOLUMES
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
Spirovibsanin A, isolated from Viburnum awabuki, has been demonstrated to be an unprecedented vibsane-type 18-norditerpene consisting of a unique bicyclo[3.3.1] nonanespiro-g-lactone framework by a combination of 2D NMR data and conformational analysis using MacroModel.